404 results on '"Zhiqing Wang"'
Search Results
2. Potential adverse events associated with sphingosine-1-phosphate (S1P) receptor modulators in patients with multiple sclerosis: an analysis of the FDA adverse event reporting system (FAERS) database
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Xiping Yang, Yan Yan, Suyao Liu, Zhiqing Wang, and Xia Feng
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S1PR modulators ,multiple sclerosis ,FAERS ,adverse event ,important medical event ,drug safety ,Therapeutics. Pharmacology ,RM1-950 - Abstract
ObjectiveSphingosine-1-phosphate receptor (S1PR) modulators have recently attracted increasing attention for the treatment of multiple sclerosis (MS). Despite their preference in the clinic, multiple adverse events (AEs) continue to be reported every year. This study aimed to investigate the potential AEs as well as related important medical events (IMEs) signal associated with S1PR modulators, including fingolimod, siponimod and ozanimod in a real-world study using the FDA Adverse Event Reporting System (FAERS) database.MethodsAll data were collected from the FAERS database, spanning from the fourth quarter of 2010(2010Q4) to the second quarter of 2023 (2023Q2). Potential AE and IME signals of S1PR modulators were identified based on a disproportionality analysis using the reporting odds ratio (ROR), proportional reporting ratio (PRR), and the bayesian confidence propagation neural network of information components (IC).ResultsOverall, 276,436 reports of fingolimod, 20,972 reports of siponimod and 10,742 reports of ozanimod were analyzed from the FAERS database. Among reports, females were more prone to develop AEs (73.71% for females vs. 23.21% for males), and more than 50% of patients suffered from AEs were between 18 and 64 years. Subsequently, we investigated the top 20 AEs associated with the signal strength of S1PR modulators at the preferred term (PT) level, and identified 31 (8 vs. 11 vs. 12, respectively) unlabeled risk signals such as thrombosis, uterine disorder and reproductive system and breast disorders. Furthermore, we discovered that the S1PR modulator reported variations in the possible IMEs, and that the IMEs associated with ocular events were reported frequently. It’s interesting to note that infection and malignancy are prominent signals with both fingolimod and siponimod in the top 20 PTs related to mortality reports.ConclusionThe present investigation highlights the possible safety risks associated with S1PR modulators. The majority of AEs are generally consistent with previous studies and are mentioned in the prescribing instructions, however, several unexpected AE signals have also been observed. Ozanimod showed the lowest signal intensity and a better safety profile than the other S1PR modulators. Due to the short marketing time of drugs and the limitations of spontaneous reporting database, further research is required to identify potential AEs related to S1PR modulators.
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- 2024
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3. Performance Characterization and Composition Design Using Machine Learning and Optimal Technology for Slag–Desulfurization Gypsum-Based Alkali-Activated Materials
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Xinyi Liu, Hao Liu, Zhiqing Wang, Xiaoyu Zang, Jiaolong Ren, and Hongbo Zhao
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alkali-activated materials ,performance characterization ,composition design ,machine learning ,simplicial homology global optimization ,Technology ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Microscopy ,QH201-278.5 ,Descriptive and experimental mechanics ,QC120-168.85 - Abstract
Fly ash–slag-based alkali-activated materials have excellent mechanical performance and a low carbon footprint, and they have emerged as a promising alternative to Portland cement. Therefore, replacing traditional Portland cement with slag–desulfurization gypsum-based alkali-activated materials will help to make better use of the waste, protect the environment, and improve the materials’ performance. In order to better understand it and thus better use it in engineering, it needs to be characterized for performance and compositional design. This study developed a novel framework for performance characterization and composition design by combining Categorical Gradient Boosting (CatBoost), simplicial homology global optimization (SHGO), and laboratory tests. The CatBoost characterization model was evaluated and discussed based on SHapley Additive exPlanations (SHAPs) and a partial dependence plot (PDP). Through the proposed framework, the optimal composition of the slag–desulfurization gypsum-based alkali-activated materials with the maximum flexural strength and compressive strength at 1, 3, and 7 days is Ca(OH)2: 3.1%, fly ash: 2.6%, DG: 0.53%, alkali: 4.3%, modulus: 1.18, and W/G: 0.49. Compared with the material composition obtained from the traditional experiment, the actual flexural strength and compressive strength at 1, 3, and 7 days increased by 26.67%, 6.45%, 9.64%, 41.89%, 9.77%, and 7.18%, respectively. In addition, the results of the optimal composition obtained by laboratory tests are very close to the predictions of the developed framework, which shows that CatBoost characterizes the performance well based on test data. The developed framework provides a reasonable, scientific, and helpful way to characterize the performance and determine the optimal composition for civil materials.
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- 2024
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4. Polyethylene glycol-stabilized cationic liposome encapsulating glucosamine sulfate: A promising nanoformulation for osteoarthritis therapy
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Xiaodong Liu, Hongbin Dai, Zhiqing Wang, Chunyan Huang, and Kai Huang
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Physics ,QC1-999 - Abstract
Osteoarthritis (OA) is a common orthopedic chronic disease, and the use of nanomaterials as carriers is an effective way to realize slow and controlled release therapy for OA drugs. In this study, we synthesized a polyethylene glycol-stabilized bilayer-decorated cationic liposome (CLis) as a drug delivery system for delivering glucosamine sulfate (GS) drug to achieve the treatment of OA in rats. The CLis encapsulated with GS drug (GS-CLis) was prepared by a reverse evaporation method, and its physical properties, encapsulation rate, and drug release performance were evaluated. The biological properties of GS-CLis were evaluated in vitro. The therapeutic effect of GS-CLis on osteoarthritis was evaluated in vivo, and the in vivo biosafety of the drug was assessed by hematology, blood biochemistry, and hematoxylin-eosin staining. GS-CLis had a particle size of (236.28 ± 4.76) nm, a potential of (27.35 ± 4.86) mv, and a spherical shape. The encapsulation rate was (96.18 ± 5.77)% and the drug-loading capacity was (9.61 ± 0.28)%, which provided a good slow drug release. GS-CLis has low cytotoxicity, low hemolysis rate, and good biocompatibility. GS-CLis can more effectively alleviate joint surface damage and inhibit the expression of inflammatory factors, and has no significant effect on the body weight of rats, with good biological safety. In this study, we successfully synthesized novel GS-CLis for the treatment of OA, which improved the retention time and therapeutic effect of GS in OA and provided a research basis for its development as an OA nanoformulation.
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- 2024
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5. Effect of Different Light Qualities on Essential Oil and Asarinin in Asarum heterotropoides Fr. Schmidt var. mandshuricum (Maxim.) Kitag
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Zhiqing Wang, Guanghui Wang, Xingzhou Quan, Min Zhang, Yanhong Wang, Lili Cui, Huiling Li, Ze Zhang, and Wei Hou
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asarinin ,essential oil ,phenylpropanoids ,colored filter films ,light quality ,selective wavelength transmittance ,Plant culture ,SB1-1110 - Abstract
Asarum heterotropoides Fr. var. mandshuricum (Maxim.) is a perennial herb native to China. Its essential oil components and asarinin are health-promoting compounds. However, cultivation under natural light can affect the growth and secondary metabolite yield of this sciophyte. Adjustment of light irradiance may be beneficial in this respect. Here, we applied six types of filtered solar irradiance by using filter films of red (I), yellow (II), blue (III), green (IV), purple (V) and 50% sunlight (VI). We measured net photosynthetic rate (APn), activity of phenylpropanoid biosynthetic enzymes, asarinin content, and essential oil content and composition. Light quality treatments V and VI resulted in increased APn, enzyme activities, asarinin content and essential oil content. Samples harvested in September 2020 had relatively higher contents and enzyme activities compared to those harvested in July 2020. Elemicin, 2,5-dimethoxytoluene and methyleugenol accumulated at higher levels in response to light quality V. Light qualities III and IV showed promising results for several compounds. Overall, we conclude that controlling the light conditions in growing environments promotes the amount of asarinin and essential oil by regulating photosynthesis and the activities of phenylpropanoid biosynthetic enzymes.
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- 2024
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6. Clinicopathological significance of Obg-like ATPase 1 and its association with Snail in gastric cancer
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Juan Wang, Qinghua Cao, and Zhiqing Wang
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ola1 ,gastric cancer ,prognosis ,immunohistochemistry ,snail ,Medicine - Abstract
Obg-like ATPase 1 (OLA1) is a member of the Obg family of P-loop NTPases and has recently been detected in several human cancer cells. However, its expression type and clinical relevance in gastric cancer remains unclear. In the present study, mRNA level of OLA1 in gastric cancer (GC) was detected in 2 datasets downloaded from the open Gene Expression Omnibus database and 30 cancer tissues. Immunohistochemistry was performed on GC and its association with Snail in 334 GC patients. The results showed that OLA1 mRNA and protein were elevated in GC tissues. High expression of OLA1 was significantly associated with aggressive features, such as tumour size, lymph-node-metastasis and tumour-nodus-metastases stage ( p = 0.0146, p = 0.0037, p < 0.001, respectively). Moreover, high levels of OLA1 predicted worse overall survival. Multivariate Cox regression analysis indicated that high expression of OLA1 was an independent prognostic factor for poor overall survival ( p = 0.009). Additionally, OLA1 expression was positively correlated with Snail, and a combination of them revealed improved prognostic accuracy for GC patients. High expression of OLA1 predicts poor prognosis in GC patients and may be serviced as a novel target for GC.
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- 2023
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7. Photocatalytic CO2 reduction using La-Ni bimetallic sites within a covalent organic framework
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Min Zhou, Zhiqing Wang, Aohan Mei, Zifan Yang, Wen Chen, Siyong Ou, Shengyao Wang, Keqiang Chen, Peter Reiss, Kun Qi, Jingyuan Ma, and Yueli Liu
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Science - Abstract
Abstract The precise construction of photocatalysts with diatomic sites that simultaneously foster light absorption and catalytic activity is a formidable challenge, as both processes follow distinct pathways. Herein, an electrostatically driven self-assembly approach is used, where phenanthroline is used to synthesize bifunctional LaNi sites within covalent organic framework. The La and Ni site acts as optically and catalytically active center for photocarriers generation and highly selective CO2-to-CO reduction, respectively. Theory calculations and in-situ characterization reveal the directional charge transfer between La-Ni double-atomic sites, leading to decreased reaction energy barriers of *COOH intermediate and enhanced CO2-to-CO conversion. As a result, without any additional photosensitizers, a 15.2 times enhancement of the CO2 reduction rate (605.8 μmol·g−1·h−1) over that of a benchmark covalent organic framework colloid (39.9 μmol·g−1·h−1) and improved CO selectivity (98.2%) are achieved. This work presents a potential strategy for integrating optically and catalytically active centers to enhance photocatalytic CO2 reduction.
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- 2023
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8. Characterization of a novel chitinolytic Serratia marcescens strain TC-1 with broad insecticidal spectrum
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Aili Tao, Tan Wang, Fahu Pang, Xueling Zheng, Camilo Ayra-Pardo, Siliang Huang, Ruxin Xu, Fengqin Liu, Jiakang Li, Yibin Wei, Zhiqing Wang, Qiuhong Niu, and Dandan Li
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Serratia marcesecens ,Insect pathogen ,Anomala corpulenta ,White grub ,Biological control ,Chitinase ,Biotechnology ,TP248.13-248.65 ,Microbiology ,QR1-502 - Abstract
Abstract The Gram-negative rod-shaped bacterium Serratia marcescens is an opportunistic pathogen of many organisms, including insects. We report the identification and optimal in vitro chitinase production conditions of a novel chitinolytic S. marcescens strain TC-1 isolated from a naturally infected white grub (Anomala corpulenta) collected from a peanut field at Nanyang city, Henan province, China. Strain identification was conducted by morphological, physiological, biochemical and molecular analyses. The amplified 16S rRNA gene of TC-1 showed a similarity greater than 99% with multiple strains of S. marcescens. Based on Neighbor-joining phylogenetic tree analysis of bacterial 16S rRNA gene sequences, TC-1 formed a clade with S. marcescens, clearly separated from other Serratia spp. The strain TC-1 showed larvicidal activities against five insect species (A. corpulenta, Plutella xylostella, Spodoptera exigua, Helicoverpa armigera, Bombyx mori) and the nematode Caenorhabditis elegans, but not against S. litura. The operating parameters of chitinase production by TC-1 were optimized by response surface methodology using a three-factor, three-level Box-Behnken experimental design. The effects of three independent variables i.e. colloidal chitin concentration (7–13 g l−1), incubation time (24–72 h) and incubation temperature (24–32 °C) on chitinase production by TC-1 were investigated. A regression model was proposed to correlate the independent variables for an optimal chitinase activity predicted as 20.946 U ml−1, using a combination of colloidal chitin concentration, incubation time and incubation temperature of 9.06 g l−1, 63.83 h and 28.12 °C, respectively. The latter agreed well with a mean chitinase activity of 20.761 ± 0.102 U ml−1 measured in the culture supernatants of TC-1 grown under similar conditions with a colloidal chitin concentration, incubation time and incubation temperature of 9 g l−1, 64 h and 28 °C, respectively. Our study revealed the S. marcescens strain TC-1 with potential as a biocontrol agent of insect pests and nematodes and demonstrated the proposed regression model's potential to guide chitinase production by this strain.
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- 2022
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9. Identification and characterization of a heme exporter from the MRP family in Drosophila melanogaster
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Zhiqing Wang, Peng Zeng, and Bing Zhou
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ZnMP ,MRP ,Heme transport ,Drosophila ,Insects ,Biology (General) ,QH301-705.5 - Abstract
Abstract Background The heme group constitutes a major functional form of iron, which plays vital roles in various biological processes including oxygen transport and mitochondrial respiration. Heme is an essential nutrient, but its pro-oxidant nature may have toxic cellular effects if present at high levels, and its synthesis is therefore tightly regulated. Deficiency and excess of heme both lead to pathological processes; however, our current understanding of metazoan heme transport is largely limited to work in mammals and the worm Caenorhabditis elegans, while functional analyses of heme transport in the genetically amenable Drosophila melanogaster and other arthropods have not been explored. Results We implemented a functional screening in Schneider 2 (S2) cells to identify putative heme transporters of D. melanogaster. A few multidrug resistance-associated protein (MRP) members were found to be induced by hemin and/or involved in heme export. Between the two plasma membrane-resident heme exporters CG4562 and CG7627, the former is responsible for heme transit across the intestinal epithelium. CG4562 knockdown resulted in heme accumulation in the intestine and lethality that could be alleviated by heme synthesis inhibition, human MRP5 (hMRP5) expression, heme oxygenase (HO) expression, or zinc supplement. CG4562 is mainly expressed in the gastric caeca and the anterior part of the midgut, suggesting this is the major site of heme absorption. It thus appears that CG4562 is the functional counterpart of mammalian MRP5. Mutation analyses in the transmembrane and nucleotide binding domains of CG4562 characterized some potential binding sites and conservative ATP binding pockets for the heme transport process. Furthermore, some homologs in Aedes aegypti, including that of CG4562, have also been characterized as heme exporters. Conclusions Together, our findings suggest a conserved heme homeostasis mechanism within insects, and between insects and mammals. We propose the fly model may be a good complement to the existing platforms of heme studies.
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- 2022
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10. Catalytic Gasification of Petroleum Coke with Different Ratios of K2CO3 and Evolution of the Residual Coke Structure
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Man Zhang, Hongyu Ban, Zhiqing Wang, Xinning Xiang, Xiaolei Wang, and Qian Zhang
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petroleum coke ,catalytic gasification ,K2CO3 ,char structure ,evolution ,Organic chemistry ,QD241-441 - Abstract
The catalytic gasification of petroleum coke with different ratios of K2CO3 was investigated by a thermogravimetric analyzer (TGA) using the non-isothermal method. The initial, peak, and final gasification temperatures of the petroleum coke decreased greatly as the amount of K2CO3 increased, and the catalytic reaction became saturated at a concentration of K+ higher than 5 mmol/g; with the further increase in catalyst; the gasification rate varied slightly, but no inhibition effect was observed. The vaporization of the catalyst was confirmed during the gasification at high temperatures. The structural evolution of the residual coke with different carbon conversions was examined by X-ray diffraction (XRD), Raman spectroscopy, and N2 adsorption analyses during gasification with and without the catalyst. The results showed that the carbon crystallite structure of the residual coke varied in the presence of the catalyst. As the carbon conversion increased, the structure of the residual coke without the catalyst became more ordered, and the number of aromatic rings decreased, while the graphitization degree of the residual coke in the presence of the catalyst decreased. Meanwhile, the surface area and pore volume of petroleum coke increased in the gasification process of the residual coke, irrespective of the presence of the catalyst. However, the reactivity of the residual coke did not change much with the variation in the carbon and pore structure during the reaction.
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- 2023
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11. Structure of Vibrio Phage XM1, a Simple Contractile DNA Injection Machine
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Zhiqing Wang, Andrei Fokine, Xinwu Guo, Wen Jiang, Michael G. Rossmann, Richard J. Kuhn, Zhu-Hua Luo, and Thomas Klose
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virus assembly ,contractile injection system ,Myoviridae tail ,phage infection mechanism ,baseplate ,contractile sheath ,Microbiology ,QR1-502 - Abstract
Antibiotic resistance poses a growing risk to public health, requiring new tools to combat pathogenic bacteria. Contractile injection systems, including bacteriophage tails, pyocins, and bacterial type VI secretion systems, can efficiently penetrate cell envelopes and become potential antibacterial agents. Bacteriophage XM1 is a dsDNA virus belonging to the Myoviridae family and infecting Vibrio bacteria. The XM1 virion, made of 18 different proteins, consists of an icosahedral head and a contractile tail, terminated with a baseplate. Here, we report cryo-EM reconstructions of all components of the XM1 virion and describe the atomic structures of 14 XM1 proteins. The XM1 baseplate is composed of a central hub surrounded by six wedge modules to which twelve spikes are attached. The XM1 tail contains a fewer number of smaller proteins compared to other reported phage baseplates, depicting the minimum requirements for building an effective cell-envelope-penetrating machine. We describe the tail sheath structure in the pre-infection and post-infection states and its conformational changes during infection. In addition, we report, for the first time, the in situ structure of the phage neck region to near-atomic resolution. Based on these structures, we propose mechanisms of virus assembly and infection.
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- 2023
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12. Identification of Structural and Morphogenesis Genes of Sulfitobacter Phage ΦGT1 and Placement within the Evolutionary History of the Podoviruses
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Stephen C. Hardies, Byung Cheol Cho, Gwang Il Jang, Zhiqing Wang, and Chung Yeon Hwang
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marine virus ,podovirus ,tubular tail A protein ,timetree ,bacteriophage evolution ,Microbiology ,QR1-502 - Abstract
ΦGT1 is a lytic podovirus of an alphaproteobacterial Sulfitobacter species, with few closely matching sequences among characterized phages, thus defying a useful description by simple sequence clustering methods. The history of the ΦGT1 core structure module was reconstructed using timetrees, including numerous related prospective prophages, to flesh out the evolutionary lineages spanning from the origin of the ejectosomal podovirus >3.2 Gya to the present genes of ΦGT1 and its closest relatives. A peculiarity of the ΦGT1 structural proteome is that it contains two paralogous tubular tail A (tubeA) proteins. The origin of the dual tubeA arrangement was traced to a recombination between two more ancient podoviral lineages occurring ~0.7 Gya in the alphaproteobacterial order Rhizobiales. Descendants of the ancestral dual A recombinant were tracked forward forming both temperate and lytic phage clusters and exhibiting both vertical transmission with patchy persistence and horizontal transfer with respect to host taxonomy. The two ancestral lineages were traced backward, making junctions with a major metagenomic podoviral family, the LUZ24-like gammaproteobacterial phages, and Myxococcal phage Mx8, and finally joining near the origin of podoviruses with P22. With these most conservative among phage genes, deviations from uncomplicated vertical and nonrecombinant descent are numerous but countable. The use of timetrees allowed conceptualization of the phage’s evolution in the context of a sequence of ancestors spanning the time of life on Earth.
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- 2023
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13. Targeting SARS-CoV-2 receptor-binding domain to cells expressing CD40 improves protection to infection in convalescent macaques
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Romain Marlin, Veronique Godot, Sylvain Cardinaud, Mathilde Galhaut, Severin Coleon, Sandra Zurawski, Nathalie Dereuddre-Bosquet, Mariangela Cavarelli, Anne-Sophie Gallouët, Pauline Maisonnasse, Léa Dupaty, Craig Fenwick, Thibaut Naninck, Julien Lemaitre, Mario Gomez-Pacheco, Nidhal Kahlaoui, Vanessa Contreras, Francis Relouzat, Raphaël Ho Tsong Fang, Zhiqing Wang, Jerome Ellis, Catherine Chapon, Mireille Centlivre, Aurelie Wiedemann, Christine Lacabaratz, Mathieu Surenaud, Inga Szurgot, Peter Liljeström, Delphine Planas, Timothée Bruel, Olivier Schwartz, Sylvie van der Werf, Giuseppe Pantaleo, Mélanie Prague, Rodolphe Thiébaut, Gerard Zurawski, Yves Lévy, and Roger Le Grand
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Science - Abstract
In this study, Marlin et al. provide insights into the potential use of subunit vaccines that induce a high level of protection against SARS-CoV-2 in animal models.
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- 2021
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14. Aerobic exercise improves LPS-induced sepsis via regulating the Warburg effect in mice
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Xishuai Wang, Zhiqing Wang, and Donghui Tang
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Medicine ,Science - Abstract
Abstract We investigated the impact of aerobic exercise (AE) on multiple organ dysfunction syndrome (MODS), aortic injury, pathoglycemia, and death during sepsis. ICR mice were randomized into four groups: Control (Con), Lipopolysaccharide (LPS), Exercise (Ex), and Exercise + LPS (Ex + LPS) groups. Mice were trained with low-intensity for 4 weeks. LPS and Ex + LPS mice received 5 mg/kg LPS intraperitoneally for induction of sepsis. Histopathological micrographs showed the organ morphology and damage. This study examined the effects of AE on LPS-induced changes in systemic inflammation, pulmonary inflammation, lung permeability, and bronchoalveolar lavage fluid (BALF) cell count, oxidative stress-related indicators in the lung, blood glucose levels, plasma lactate levels, serum insulin levels, plasma high-mobility group box 1 (HMGB1) levels, glucose transporter 1 (Glut1) and HMGB1, silent information regulator 1 (Sirt-1), and nuclear factor erythroid 2-related factor 2 (Nrf-2) mRNA expression levels in lung tissue. AE improved sepsis-associated multiple organ dysfunction syndrome (MODS), aortic injury, hypoglycemia, and death. AE prominently decreased pulmonary inflammation, pulmonary edema, and modulated redox balance during sepsis. AE prominently decreased neutrophil content in organ. AE prominently downregulated CXCL-1, CXCL-8, IL-6, TNF-α, Glu1, and HMGB1 mRNA expression but activated IL-1RN, IL-10, Sirt-1, and Nrf-2 mRNA expression in the lung during sepsis. AE decreased the serum levels of lactate and HMGB1 but increased blood glucose levels and serum insulin levels during sepsis. A 4-week AE improves sepsis-associated MODS, aortic injury, pathoglycemia, and death. AE impairs LPS-induced lactate and HMGB1 release partly because AE increases serum insulin levels and decreases the levels of Glut1. AE is a novel therapeutic strategy for sepsis targeting aerobic glycolysis.
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- 2021
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15. Antagonistic potential of Trichoderma as a biocontrol agent against Sclerotinia asari
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Zhiqing Wang, Ziqing Wang, Baohui Lu, Xingzhou Quan, Guangyuan Zhao, Ze Zhang, Wanliang Liu, and Yixin Tian
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Trichoderma ,Sclerotinia asari ,biocontrol agent ,antioxidant activity ,metabolites ,antifungal activity ,Microbiology ,QR1-502 - Abstract
In the present study, the inhibitory potential of 14 Trichoderma strains (isolated from Asarum rhizosphere) was investigated against Sclerotinia asari using the plate dilution method. The activity of antioxidant enzymes viz; catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and malondialdehyde (MDA) in S. asari treated with the two Trichoderma strains was also evaluated. Untargeted metabolomic analysis by using LC/MS analysis was carried out to determine differential metabolites in T. hamatum (A26) and T. koningiopsis (B30) groups. Moreover, transcriptome analysis of S. asari during the inhibition of S. asari by B30, and A26 compared with the control (CK) was performed. Results indicated that inhibition rates of T. koningiopsis B30, and T. hamatum A26 were highest compared to other strains. Similarly, non-volatile metabolites extracted from the B30 strain showed a 100% inhibition of S. asari. The activity of CAT, SOD, and POD decreased after treatment with A26 and B30 strains while increasing MDA content of S. asari. Antifungal activity of differential metabolites like abamectin, eplerenone, behenic acid, lauric acid, josamycin, erythromycin, and minocycline exhibited the highest inhibition of S. asari. Transcriptome analysis showed that differentially expressed genes were involved in many metabolic pathways which subsequently contributed toward antifungal activity of Trichoderma. These findings suggested that both Trichoderma strains (B30 and A26) could be effectively used as biocontrol agents against Sclerotinia disease of Asarum.
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- 2022
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16. Anti-DFS70 antibodies in systemic lupus erythematosus: Prevalence in a large Chinese cohort and an unexpected association with anti-dsDNA antibodies by a long-term follow-up
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Yingxin Dai, Enling Li, Dandan Chen, Xiangyu Niu, Zhiqing Wang, Liangjing Lu, and Bing Zheng
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autoantibodies ,anti-DFS70 ,anti-dsDNA ,follow-up ,systemic lupus erythematosus ,Immunologic diseases. Allergy ,RC581-607 - Abstract
ObjectiveMonospecific autoantibodies to dense fine speckles 70 (DFS70) antigen are purported to aid in excluding systemic autoimmune rheumatic diseases (SARD) such as systemic lupus erythematosus (SLE). However, the non-isolated anti-DFS70 still has a certain prevalence in SLE patients, and the clinical significance remains unclear. We aimed to investigate the prevalence, clinical relevance, and value of long-term monitoring of anti-DFS70 antibodies in SLE patients.MethodsAnti-DFS70 antibodies were measured by enzyme-linked immunosorbent assay (ELISA) in 851 SLE patients, 211 healthy individuals, and 194 patients with other SARD (except SLE). Demographic, serological, and clinical associations of anti-DFS70 antibodies were analyzed by a stepwise multivariable logistic regression model. The correlation of anti-DFS70 with anti-dsDNA, anti-C1q, and SLE Disease Activity Index 2000 (SLEDAI-2K) was analyzed. Sixty-one SLE patients with follow-up time ranging from 2 to 57 months were measured anti-DFS70 antibodies using both ELISA and line immunoassay. The dynamic variations of anti-DFS70 antibodies were evaluated with anti-dsDNA, anti-C1q, and SLEDAI-2K during the follow-up.ResultsThe prevalence of anti-DFS70 was significantly higher in SLE (20.7% (176/851)) than in healthy individuals (9.5% (20/211), p = 0.0002) and other SARD (10.8% (21/194), p = 0.002). Multivariable analysis revealed that anti-DFS70-positive SLE patients were associated with younger age (odds ratio (OR) = 0.982; 95% confidence interval (CI) = 0.969, 0.995), higher frequencies of anti-dsDNA (OR 1.598; 95% CI 1.107, 2.306) and anti-PCNA (OR 6.101; 95% CI 2.534, 14.688), and higher levels of serum IgG (OR 1.097; 95% CI 1.067, 1.129) and were more likely to be accompanied by mucosal ulcers (OR 5.921; 95% CI 1.652, 21.215). The O.D. value of anti-DFS70 positively correlated with levels of anti-dsDNA (r = 0.183, p < 0.0001) and anti-C1q (r = 0.181, p < 0.0001), respectively, but not with SLEDAI-2K (p = 0.920). During the follow-up, 49 (42 negative and 7 positive) patients remained stable with anti-DFS70 levels. The other 12 patients experienced significant changes in anti-DFS70, and 83.3% (10/12) of them showed similar trends between anti-DFS70 and anti-dsDNA by evaluation of dynamic variations.ConclusionAnti-DFS70 antibodies seem to be prevalent in Chinese SLE patients. The positive association of anti-DFS70 with anti-dsDNA and consistent dynamic variation between anti-DFS70 and anti-dsDNA during the follow-up suggested a potential relationship between anti-DFS70 and anti-dsDNA in patients with SLE.
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- 2022
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17. High risk and early onset of cancer in Chinese patients with Peutz-Jeghers syndrome
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Zhiqing Wang, Zhi Wang, Ying Wang, Jianhua Wu, Zonglin Yu, Chudi Chen, Junsheng Chen, Baoping Wu, and Ye Chen
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cancer risk ,cancer spectrum ,Peutz-Jeghers syndrome ,rare disease ,STK11 variants ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Peutz-Jeghers syndrome (PJS) is an autosomal dominant inherited disorder associated with a predisposition to a variety of cancers. Previous studies that have evaluated the cancer spectrum and risk of this rare disease have primarily been based on small data sets or heterogeneous cohorts from different countries. Here, we report the results of a large homogeneous cohort of Chinese PJS patients who were followed prospectively from 2006 to July 2021, and clinical data before 2006 were retrospectively collected. A total of 412 PJS patients (56.55% males) from 208 families were enrolled, contributing 12,798 person-years of follow-up. A total of 113 cancers were diagnosed in 109 patients (26.46%). The median age at the first cancer diagnosis was 40 years. In particular, patients born after the 1980s were diagnosed with cancer at an earlier median age of 30.5 years. The cumulative cancer risk was sharply increased to 30.9% at age 40 years; this high cancer risk age was 10 years earlier than that reported in previous Western studies, and increased to 76.2% at an age of 60 years. The most common cancer was gastrointestinal (GI) cancer (64.6%), in which colorectal cancer constituted a significantly larger proportional distribution (32.74%), when compared with previous investigations (11.1%−20.83%). There was some evidence that overrepresentation point variants in domain XI of STK11 may be associated with GI cancers. Furthermore, the incidences of gynecological and lung cancers were second only to that of GI cancer in this cohort. These results may provide novel insight for justifying surveillance to detect cancers at an earlier phase to improve clinical outcomes. Furthermore, the potential STK11 genotype-phenotype association could be the basis for future genetic counseling.
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- 2022
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18. Design, immunogenicity, and efficacy of a pan-sarbecovirus dendritic-cell targeting vaccine
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Séverin Coléon, Aurélie Wiedemann, Mathieu Surénaud, Christine Lacabaratz, Sophie Hue, Mélanie Prague, Minerva Cervantes-Gonzalez, Zhiqing Wang, Jerome Ellis, Amandine Sansoni, Camille Pierini, Quentin Bardin, Manon Fabregue, Sarah Sharkaoui, Philippe Hoest, Léa Dupaty, Florence Picard, Marwa El Hajj, Mireille Centlivre, Jade Ghosn, Rodolphe Thiébaut, Sylvain Cardinaud, Bernard Malissen, Gérard Zurawski, Ana Zarubica, Sandra M. Zurawski, Véronique Godot, and Yves Lévy
- Subjects
COVID-19 ,SARS-CoV-2 ,Vaccine ,Pre-clinical model ,Sarbecoviruses ,Medicine ,Medicine (General) ,R5-920 - Abstract
Summary: Background: There is an urgent need of a new generation of vaccine that are able to enhance protection against SARS-CoV-2 and related variants of concern (VOC) and emerging coronaviruses. Methods: We identified conserved T- and B-cell epitopes from Spike (S) and Nucleocapsid (N) highly homologous to 38 sarbecoviruses, including SARS-CoV-2 VOCs, to design a protein subunit vaccine targeting antigens to Dendritic Cells (DC) via CD40 surface receptor (CD40.CoV2). Findings: CD40.CoV2 immunization elicited high levels of cross-neutralizing antibodies against SARS-CoV-2, VOCs, and SARS-CoV-1 in K18-hACE2 transgenic mice, associated with viral control and survival after SARS-CoV-2 challenge. A direct comparison of CD40.CoV2 with the mRNA BNT162b2 vaccine showed that the two vaccines were equally immunogenic in mice. We demonstrated the potency of CD40.CoV2 to recall in vitro human multi-epitope, functional, and cytotoxic SARS-CoV-2 S- and N-specific T-cell responses that are unaffected by VOC mutations and cross-reactive with SARS-CoV-1 and, to a lesser extent, MERS epitopes. Interpretation: We report the immunogenicity and antiviral efficacy of the CD40.CoV2 vaccine in a preclinical model providing a framework for a pan-sarbecovirus vaccine. Fundings: This work was supported by INSERM and the Investissements d'Avenir program, Vaccine Research Institute (VRI), managed by the ANR and the CARE project funded from the Innovative Medicines Initiative 2 Joint Undertaking (JU).
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- 2022
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19. SOX2 promotes chemoresistance, cancer stem cells properties, and epithelial–mesenchymal transition by β-catenin and Beclin1/autophagy signaling in colorectal cancer
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Yin Zhu, Shimiao Huang, Shengyuan Chen, Jiaxuan Chen, Zhiqing Wang, Yadong Wang, and Haoxuan Zheng
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Cytology ,QH573-671 - Abstract
Abstract Sex-determining region Y-box2 (SOX2), a master regulator of embryonic and induced pluripotent stem cells, drives cancer stem cells (CSCs) properties, fuels tumor initiation, and contributes to tumor aggressiveness. Our previous study has demonstrated the oncogenic role of SOX2 in colorectal cancer (CRC). In this study, we sought to elucidate the underlying mechanisms. Cell function experiments were performed to detect chemoresistance, proliferation, stemness, migration, and invasion in vitro. Chromatin immunoprecipitation, co-immunoprecipitation, luciferase reporter assay, and immunofluorescence were performed to explore the regulation of ABCC2, β-catenin, and Beclin1 by SOX2. The carcinogenic role of SOX2-β-catenin/Beclin1-ABCC2 axis in vivo was analyzed by CRC tissues and xenograft models. Here, we reported that SOX2 sustained chemoresistance by transcriptional activation of ABCC2 expression. Suppressing either β-catenin or autophagy signaling curbed SOX2-driven chemoresistance, stemness, and epithelial–mesenchymal transition (EMT). Mechanistically, SOX2 combined with β-catenin and increased its nuclear expression and transcriptional activity. Transcriptional activation of Beclin1 expression by SOX2 consequently activating autophagy and inducing malignant phenotype. Furthermore, overexpression of β-catenin or Beclin1 facilitated ABCC2 expression. The clinical analyses showed that high expression of ABCC2 and Beclin1 were positively correlated with SOX2 and were associated with poor prognosis in CRC patients. Finally, xenograft models revealed that inhibition of SOX2 expression and autophagy restrained tumor growth and chemoresistance in vivo. Conclusively, we demonstrated a novel mechanism by which the SOX2-β-catenin/Beclin1/autophagy signaling axis regulates chemoresistance, stemness, and EMT in CRC. Our findings provide novel insights into CRC carcinogenesis and may help develop potential therapeutic candidates for CRC.
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- 2021
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20. Case Report: Successful Management of a 29-Day-Old Infant With Severe Hyperlipidemia From a Novel Homozygous Variant of GPIHBP1 Gene
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Shu Liu, Zhiqing Wang, Xianhua Zheng, Ye Zhang, Sisi Wei, Haimei OuYang, Jinqun Liang, Nuan Chen, Weihong Zeng, and Jianhui Jiang
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severe hyperlipidemia ,whole exome sequencing ,GPIHBP1 gene ,novel variant ,therapy ,Pediatrics ,RJ1-570 - Abstract
BackgroundSevere hyperlipidemia is characterized by markedly elevated blood triglyceride levels and severe early-onset cardiovascular diseases, pancreatitis, pancreatic necrosis or persistent multiple organ failure if left untreated. It is a rare autosomal recessive metabolic disorder originated from the variants of lipoprotein lipase gene, and previous studies have demonstrated that most cases with severe hyperlipidemia are closely related to the variants of some key genes for lipolysis, such as LPL, APOC2, APOA5, LMF1, and GPIHBP1. Meanwhile, other unidentified causes also exist and are equally worthy of attention.MethodsThe 29-day-old infant was diagnosed with severe hyperlipidemia, registering a plasma triglyceride level as high as 25.46 mmol/L. Whole exome sequencing was conducted to explore the possible pathogenic gene variants for this patient.ResultsThe infant was put on a low-fat diet combined with pharmacological therapy, which was successful in restraining the level of serum triglyceride and total cholesterol to a low to medium range during the follow-ups. The patient was found to be a rare novel homozygous duplication variant-c.45_48dupGCGG (Pro17Alafs*22) in GPIHBP1 gene-leading to a frameshift which failed to form the canonical termination codon TGA. The mutant messenger RNA should presumably produce a peptide consisting of 16 amino acids at the N-terminus, with 21 novel amino acids on the heels of the wild-type protein.ConclusionsOur study expands on the spectrum of GPIHBP1 variants and contributes to a more comprehensive understanding of the genetic diagnosis, genetic counseling, and multimodality therapy of families with severe hyperlipidemia. Our experience gained in this study is also contributory to a deeper insight into severe hyperlipidemia and highlights the importance of molecular genetic tests.
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- 2022
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21. Transcriptional response of Asarum heterotropoides Fr. Schmidt var. mandshuricum (Maxim.) Kitag. leaves grown under full and partial daylight conditions
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Zhiqing Wang, Haiqin Ma, Min Zhang, Ziqing Wang, Yixin Tian, Wei Li, and Yingping Wang
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Hormone signaling ,Herbal plant ,Photosynthesis ,Sciophyte ,Transcriptome ,Volatile oil ,Biotechnology ,TP248.13-248.65 ,Genetics ,QH426-470 - Abstract
Abstract Background Asarum heterotropides Fr. Schmidt var. mandshuricum (Maxim.) Kitag. is an important medicinal and industrial plant, which is used in the treatment of various diseases. The main bioactive ingredient is the volatile oil having more than 82 identified components of which methyleugenol, safrole, myristicin, and toluene account for about 70% of the total volume. As a sciophyte plant, the amount of light it absorbs through leaves is an important factor for growth and metabolism. Results We grew Asarum plants under full, 50, 28, and 12% sunlight conditions to investigate the effect of different light irradiances on the four major volatile oil components. We employed de novo transcriptome sequencing to understand the transcriptional behavior of Asarum leaves regarding the biosynthetic pathways of the four volatile oil components, photosynthesis and biomass accumulation, and hormone signaling. Our results demonstrated that the increasing light conditions promoted higher percent of the four components. Under full sunlight conditions, cinnamyl alcohol dehydrogenase and cytochrome p450719As were upregulated and led the increased methyleugenol, safrole, and myristicin. The transcriptomic data also showed that Asarum leaves, under full sunlight conditions, adjust their photosynthesis-antenna proteins as a photoprotective response with the help of carotenoids. Plant hormone-signaling related genes were also differentially expressed between full sunlight and low light conditions. Conclusions High light induces accumulation of major bioactive ingredients A. heterotropides volatile oil and this is ascribed to upregulation of key genes such as cinnamyl alcohol dehydrogenase and cytochrome p450719As. The transcriptome data presented here lays the foundation of further understanding of light responses in sciophytes and provides guidance for increasing bioactive molecules in Asarum.
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- 2021
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22. MATLAB GUI Based Steady State Open-Loop and Closed-Loop Simulation Tools for Different LLC Converters With all Operation Modes
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Yuqi Wei, Zhiqing Wang, Quanming Luo, and H. Alan Mantooth
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LLC resonant converter ,MATLAB GUI ,simulation tool ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
LLC resonant converters have been widely adopted in many different industrial applications due to their characteristics of high efficiency and high power density. Simulation tools are of great importance for the analysis and design of LLC resonant converters. For example, many LLC design methods require massive simulations to finalize the circuit parameters, iterations are necessary, which can be tedious and time-consuming. Therefore, in this work, accurate and complete steady state simulation tools based on MATLAB graphical user interface (GUI) are designed for LLC resonant converters. All common and possible operation modes and LLC converter topologies are included in the designed simulation tools, which makes them practical for different applications and operation conditions. An improved mode judgement method and guidelines for initial point setting are proposed to ensure fast simulation speed. More than that, the key circuit voltage and current values are summarized for the user to evaluate the converter performance, which is more convenient than commercial simulation software. Moreover, the designed simulation tools are suitable and convenient for automatic converter parameter design.
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- 2021
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23. Anti-DFS70 Antibodies Are Associated With Proliferative Lupus Nephritis and Renal Pathological Activity
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Dandan Chen, Li Zhao, Yingxin Dai, Fang Du, Enling Li, Xiangyu Niu, Zhiqing Wang, Bing Zheng, and Liangjing Lu
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activity Index (AI) ,anti-DFS70 antibodies ,anti-dsDNA antibodies ,antinuclear antibodies (ANA) ,lupus nephritis (LN) ,Immunologic diseases. Allergy ,RC581-607 - Abstract
ObjectiveThe significance of anti-dense fine speckles 70 (DFS70) antibodies in systemic lupus erythematosus (SLE) is still unclear, especially in lupus nephritis (LN) patients. We investigated the prevalence, clinical and pathological relevance of anti-DFS70 antibodies in LN patients.MethodsAnti-DFS70 antibodies were measured using enzyme-linked immunosorbent assays in 377 biopsy-proven LN patients, 268 non-LN SLE patients, 232 chronic kidney disease (CKD) patients, and 78 healthy individuals (HI). Demographic, clinical, and pathological parameters were compared between LN patients with and without anti-DFS70 antibodies. Stepwise multivariable logistic regression was performed to identify covariates associated with anti-DFS70 antibodies.ResultsThe prevalence of anti-DFS70 antibodies in LN (19.6%) was comparable to non-LN SLE patients (19.8%, P=0.9630), but was significantly higher than CKD patients (13.4%, P=0.0468) and HI (9.0%, P=0.0252). Using multivariable logistic regression analysis, the titer of anti-double-stranded DNA (dsDNA) antibodies (adjusted odds ratio=1.002, 95% confidence interval 1.001-1.003, P=0.004) was associated with positive anti-DFS70 antibodies in LN patients. In addition, anti-DFS70 antibodies were more prevalent in proliferative LN (22.0%, 68/309) compared to membrane LN patients (10.2%, 6/59, P=0.0376). Furthermore, LN patients with positive anti-DFS70 antibodies had significantly higher activity index (AI) compared to patients who were negative (8.0 vs 6.0, P=0.0131). However, the chronicity index was similar between the groups (3.0 vs 3.0, P=0.8412).ConclusionAnti-DFS70 antibodies were not associated with LN development in SLE patients but were associated with anti-dsDNA antibodies, proliferative LN, and renal AI. This suggests their potential to serve as a non-histological biomarker for LN subclass and activity status.
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- 2022
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24. Anti-CD40 Antibody Fused to CD40 Ligand Is a Superagonist Platform for Adjuvant Intrinsic DC-Targeting Vaccines
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Valentina Ceglia, Sandra Zurawski, Monica Montes, Mitchell Kroll, Aurélie Bouteau, Zhiqing Wang, Jerome Ellis, Botond Z. Igyártó, Yves Lévy, and Gerard Zurawski
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dendritic cells ,monoclonal antibodies ,superagonist ,adjuvant-intrinsic ,vaccine ,Immunologic diseases. Allergy ,RC581-607 - Abstract
CD40 is a potent activating receptor expressed on antigen-presenting cells (APCs) of the immune system. CD40 regulates many aspects of B and T cell immunity via interaction with CD40L expressed on activated T cells. Targeting antigens to CD40 via agonistic anti-CD40 antibody fusions promotes both humoral and cellular immunity, but current anti-CD40 antibody-antigen vaccine prototypes require co-adjuvant administration for significant in vivo efficacy. This may be a consequence of dulling of anti-CD40 agonist activity via antigen fusion. We previously demonstrated that direct fusion of CD40L to anti-CD40 antibodies confers superagonist properties. Here we show that anti-CD40-CD40L-antigen fusion constructs retain strong agonist activity, particularly for activation of dendritic cells (DCs). Therefore, we tested anti-CD40-CD40L antibody fused to antigens for eliciting immune responses in vitro and in vivo. In PBMC cultures from HIV-1-infected donors, anti-CD40-CD40L fused to HIV-1 antigens preferentially expanded HIV-1-specific CD8+ T cells versus CD4+ T cells compared to analogous anti-CD40-antigen constructs. In normal donors, anti-CD40-CD40L-mediated delivery of Influenza M1 protein elicited M1-specific T cell expansion at lower doses compared to anti-CD40-mediated delivery. Also, on human myeloid-derived dendritic cells, anti-CD40-CD40L-melanoma gp100 peptide induced more sustained Class I antigen presentation compared to anti-CD40-gp100 peptide. In human CD40 transgenic mice, anti-CD40-CD40L-HIV-1 gp140 administered without adjuvant elicited superior antibody responses compared to anti-CD40-gp140 antigen without fused CD40L. In human CD40 mice, compared to the anti-CD40 vehicle, anti-CD40-CD40L delivery of Eα 52-68 peptide elicited proliferating of TCR I-Eα 52-68 CD4+ T cells producing cytokine IFNγ. Also, compared to controls, only anti-CD40-CD40L-Cyclin D1 vaccination of human CD40 mice reduced implanted EO771.LMB breast tumor cell growth. These data demonstrate that human CD40-CD40L antibody fused to antigens maintains highly agonistic activity and generates immune responses distinct from existing low agonist anti-CD40 targeting formats. These advantages were in vitro skewing responses towards CD8+ T cells, increased efficacy at low doses, and longevity of MHC Class I peptide display; and in mouse models, a more robust humoral response, more activated CD4+ T cells, and control of tumor growth. Thus, the anti-CD40-CD40L format offers an alternate DC-targeting platform with unique properties, including intrinsic adjuvant activity.
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- 2022
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25. Association of Cytomegalovirus Infection With Anti-MDA5 Antibody-Positive Dermatomyositis: A Prospective Cohort Study
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Linlin Huang, Wenbo Zhu, Yan Ye, Xiaoping Wu, Qingran Yan, Zhiqing Wang, Yanwei Lin, and Sheng Chen
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cytomegalovirus ,anti-melanoma differentiation-associated gene 5 antibody ,dermatomyositis ,idiopathic inflammatory myopathy ,prognosis ,lymphocytes subset ,Medicine (General) ,R5-920 - Abstract
Objectives: To investigate whether cytomegalovirus (CMV) infection plays a role in the pathogenesis and prognosis of idiopathic inflammatory myopathy (IIM), particularly in anti-MDA5 antibody-positive (anti-MDA5+) dermatomyositis (DM).Methods: A prospective cohort of 204 newly diagnosed IIM patients and 50 healthy individuals were enrolled in the study. CMV-IgM and CMV-IgG antibody concentrations and lymphocyte counts were analyzed. Differences in categorical data were compared using Fisher's exact test and the chi-square test. One-year survival rates were analyzed in MDA5+ DM patients with and without CMV infection.Results: In IIM patients, the median CMV-IgM level was significantly higher than in healthy controls (6 U/mL vs. 0 U/mL, p < 0.05) as was the median CMV-IgG level (114 U/mL vs. 105 U/mL, p < 0.05). The percentage of recent CMV infections in the MDA5+ DM group was much higher than it was in the MDA5− IIM group (19.1% vs. 7.0%, p = 0.009). MDA5+ DM patients with CMV DNA-emia had poorer 1 year survival than the CMV-DNA− group (33.3% vs. 86.3%, p = 0.010). CMV-IgM-positive (CMV-IgM+) MDA5+ DM patients had lower CD4+ T cell counts (245.7 cells/μL vs. 420.5 cells/μL, p < 0.05) and CD19+ B cell counts (97.3 cells/μL vs. 240.6 cells/μL, p < 0.05).Conclusion: The number of CMV infections was significantly higher in IIM patients, particularly in MDA5+ DM patients. Lower CD4+ T cells and CD19+ B cells were observed in CMV-IgM+ MDA5+ DM patients. CMV infection may have an important role in the pathogenesis and prognosis of MDA5+ DM by disrupting immunity.
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- 2021
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26. Author Correction: Aerobic exercise improves LPS-induced sepsis via regulating the Warburg effect in mice
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Xishuai Wang, Zhiqing Wang, and Donghui Tang
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Medicine ,Science - Published
- 2022
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27. Anomalous Dense Liquid Condensates Host the Nucleation of Tumor Suppressor p53 Fibrils
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Mohammad S. Safari, Zhiqing Wang, Kunaal Tailor, Anatoly B. Kolomeisky, Jacinta C. Conrad, and Peter G. Vekilov
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Science - Abstract
Summary: About half of human cancers are associated with mutations of the tumor suppressor p53. Gained oncogenic functions of the mutants have been related to aggregation behaviors of wild-type and mutant p53. The thermodynamic and kinetic mechanisms of p53 aggregation are poorly understood. Here we find that wild-type p53 forms an anomalous liquid phase. The liquid condensates exhibit several behaviors beyond the scope of classical phase transition theories: their size, ca. 100 nm, is independent of the p53 concentration and decoupled from the protein mass held in the liquid phase. Furthermore, the liquid phase lacks constant solubility. The nucleation of p53 fibrils deviates from the accepted mechanism of sequential association of single solute molecules. We find that the liquid condensates serve as pre-assembled precursors of high p53 concentration that facilitate fibril assembly. Fibril nucleation hosted by precursors represents a novel biological pathway, which opens avenues to suppress protein fibrillation in aggregation diseases. : Chemistry; Biological Sciences; Biophysics Subject Areas: Chemistry, Biological Sciences, Biophysics
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- 2019
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28. Anti-DFS70 Antibodies Among Patient and Healthy Population Cohorts in China: Results From a Multicenter Training Program Showing Spontaneous Abortion and Pediatric Systemic Autoimmune Rheumatic Diseases Are Common in Anti-DFS70 Positive Patients
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Bing Zheng, Zhiqing Wang, Rodrigo A. Mora, Aiping Liu, Chihui Li, Dengtao Liu, Fuying Zhai, Huiyuan Liu, Huiyun Gong, Jiaye Zhou, Jing Liu, Li Chen, Lijun Wu, Lin Yuan, Lina Ying, Loujian Jie, Meifang He, Meng Hao, Ping Xu, Qiuwei Lu, Shanshan Han, Shishi Chen, Shuimian Chen, Shunfei Zhu, Weihua Sun, Xiaoying Guo, Yajuan Chen, Yan Wang, Yemin Qu, Zhen Li, Zhenzhen Niu, Zhongyan Han, and Edward K. L. Chan
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antinuclear antibodies ,DFS70 ,pediatric rheumatic disease ,spontaneous abortion ,systemic autoimmune rheumatic disease ,Immunologic diseases. Allergy ,RC581-607 - Abstract
ObjectiveAnti-DFS70 antibodies correlating with the nuclear dense fine speckled (DFS) pattern in the HEp-2 indirect immunofluorescence assay (IFA) are less common in patients with systemic autoimmune rheumatic disease (SARD) than in healthy subjects and their clinical associations remain elusive. We hosted a multi-center HEp-2 IFA training program to improve the ability of clinical laboratories to recognize the DFS pattern and to investigate the prevalence and relevance of anti-DFS70 antibodies.MethodsDFS pattern sera identified by HEp-2 IFA in 29 centers in China were redirected to a central laboratory for anti-DFS70 testing by line immunoblot assay (LIA), enzyme-linked immunosorbent assay (ELISA), and IFA with HEp-2 ELITE/DFS70-KO substrate. Anti-extractable nuclear antigen antibodies were measured by LIA and the clinical relevance was examined in adult and pediatric patients.ResultsHEp-2 IFA positive rate and DFS pattern in positive sera were 36.2% (34,417/95,131) and 1.7% (582/34,417) in the patient cohort, and 10.0% (423/4,234) and 7.8% (33/423) in a healthy population, respectively. Anti-DFS70 prevalence among sera presenting the DFS pattern was 96.0, 93.7, and 49.6% by ELISA, LIA, and HEp-2 ELITE, respectively. 15.5% (52/336) of adult and 50.0% (20/40) of pediatric anti-DFS70 positive patients were diagnosed with SARD. Diseases most common in anti-DFS70 positive patients were spontaneous abortion (28.0%) in adults and juvenile idiopathic arthritis (22.5%) in pediatric patients.ConclusionAccurate DFS pattern identification increased the detection rate of anti-DFS70 antibodies by ELISA and LIA. Anti-DFS70 antibodies are remarkably high in cases of spontaneous abortion and in pediatric SARD patients, but not prevalent in adult SARD patients.
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- 2020
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29. Effects of light irradiation on essential oil biosynthesis in the medicinal plant Asarum heterotropoides Fr. Schmidt var. mandshuricum (Maxim) Kitag.
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Zhiqing Wang, Shengyuan Xiao, Yufang Wang, Jiyong Liu, Haiqin Ma, Yingping Wang, Yixin Tian, and Wei Hou
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Medicine ,Science - Abstract
Asarum heterotropoides Fr. var. mandshuricum (Maxim) Kitag (Chinese wild ginger) is an important medicinal herb. Essential oil extracted from its roots is the key ingredient and is mainly composed of phenylpropanoid compounds. As a skiophyte plant, light is a crucial factor for A. heterotropoides var. mandshuricum growth and metabolism. To investigate the effects of light irradiation on the essential oil biosynthesis in A. heterotropoides var. mandshuricum, the plants were cultivated in four light irradiation treatments (100, 50, 24 and 12% full sunlight). The photosynthetic capacity, essential oil content and composition, activities of several enzymes and levels of some secondary metabolites involved in the shikimic acid and cinnamic acid pathways were analyzed. The leaf mass per area, average diurnal net photosynthetic rate, and the essential oil content increased significantly with increasing light intensity. Phenylalanine, cinnamic acid, and p-coumaric acid in the cinnamic acid pathway were at their highest levels in plants cultivated in 100% full sunlight. The highest content of shikimic acid in the shikimic acid pathway was obtained in plants grown in 50% sunlight transmittance. The activity of the enzymes 3-Deoxy-D-arabino-heptulosonate-7-phosphate synthase, phenylalanine ammonia lyase, cinnamate-4-hydroxylase and 4-coumarate:CoA ligase increased proportionally with light intensity. Overall, we conclude that high light irradiation promotes high net photosynthetic rate, high activity of enzymes and high amounts of phenylpropanoid precursor metabolites leading to significant biosynthesis of essential oil in A. heterotropoides var. mandshuricum.
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- 2020
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30. Prenatal diagnosis in a hereditary Peutz-Jeghers syndrome family with high cancer risk
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Zhiqing Wang, Shu Liu, Siping Liu, Yadong Wang, Junsheng Chen, and Baoping Wu
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STK11 gene ,MLPA ,Genetic counseling ,Family planning ,Internal medicine ,RC31-1245 ,Genetics ,QH426-470 - Abstract
Abstract Background Peutz-Jeghers Syndrome (PJS) is a hereditary cancer predisposing syndrome caused by autosomal dominant mutations in the serine/threonine kinase 11 (STK11) gene and is associated with decreased life expectancy. Many families experience a poorer quality of life due to the psychological burden associated with the carrier status of their child. Therefore early genetic testing and confirmation of the diagnosis is important for patients’ psychological status, as well as for clinical management, genetic counseling and possible prenatal family planning. Methods In this study, peripheral blood genomic DNA samples from a Chinese PJS family with a high cancer risk were examined for STK11 mutations using Sanger sequencing and MLPA analysis. Furthermore, prenatal PJS testing from transabdominal chorionic villi sample was performed in one female member of the family. This family was followed up for three years. Results In this family, the STK11 exon 1 deletion (c.-1114-?_290 +?del) was predicted to affect the kinase domain of the protein and co-segregated with the disease phenotype. The same mutation was detected in the fetus and genetic sequencing and MLPA of the infant’s DNA and the pigmentation on his lips confirmed the result of prenatal testing. To the best of our knowledge, this is the first report on PJS prenatal diagnosis of a PJS family in China. Conclusions An accurate and convenient PJS prenatal testing provides an opportunity for affected families to focus on polyp-related symptoms and cancer prevention and may be helpful for couples in family planning decision-making.
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- 2018
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31. Snail/FOXK1/Cyr61 Signaling Axis Regulates the Epithelial–Mesenchymal Transition and Metastasis in Colorectal Cancer
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Xiaoting Huang, Li Xiang, Yueqiao Li, Yingying Zhao, Huiqiong Zhu, Yizhi Xiao, Mengwei Liu, Xiaosheng Wu, Zhiqing Wang, Ping Jiang, Haitao Qing, Qiang Zhang, Guangnan Liu, Wenjing Zhang, Aimin Li, Ye Chen, Side Liu, and Jide Wang
- Subjects
Snail ,FOXK1 ,Cyr61 ,Colorectal cancer ,Metastasis ,Physiology ,QP1-981 ,Biochemistry ,QD415-436 - Abstract
Background/Aims: Metastasis is the primary cause of colorectal cancer (CRC)-related death. However, the molecular mechanisms underlying metastasis in CRC remain unclear. Methods: We evaluated mRNA and protein expression levels by quantitative real-time reverse transcription PCR, western blotting, immunofluorescence, tissue microarrays, and immunohistochemistry assays. We also assessed the migration and invasion abilities of CRC cells in vitro by wound healing assays, invasion and migration assays, western blot analysis, and immunofluorescence. Tumor metastasis was evaluated in nude mice in vivo. Results: A positive correlation was observed between the expression patterns of Forkhead box k1 (FOXK1) and Snail in CRC. Luciferase reporter and chromatin immunoprecipitation assays demonstrated that Snail directly bound to and activated the human FOXK1 gene promoter. Moreover, the Snail-FOXK1 axis promote epithelial mesenchymal transition (EMT)-mediated CRC cell invasion and metastasis. FOXK1 and Snail expression levels were correlated with tumor progression and served as significant predictors of overall survival in patients with CRC. Furthermore, overexpression of FOXK1 induced the EMT by upregulating the expression of cysteine-rich angiogenic inducer 61 (Cyr61). Luciferase assays showed that Cyr61 was a direct transcriptional target of FOXK1. Down regulation of Cyr61 decreased FOXK1-enhanced “CRC cell” migration, invasion, and metastasis. Additionally, FOXK1 expression was positively correlated with Cyr61 expression and was associated with poor prognosis. Conclusions: The Snail/FOXK1/Cyr61 signaling axis regulates the EMT and metastasis of CRC.
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- 2018
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32. Co-expression analysis reveals dysregulated miRNAs and miRNA-mRNA interactions in the development of contrast-induced acute kidney injury.
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Zhiqing Wang, Weiwei Bao, Xiaobiao Zou, Ping Tan, Hao Chen, Cancan Lai, Donglin Liu, Zhurong Luo, and Mingfang Huang
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Medicine ,Science - Abstract
The pathogenesis of contrast-induced acute kidney injury (CI-AKI) is incompletely understood. MicroRNAs (miRNAs) are important mediators that normally function via post-transcriptional degradation of target mRNAs. Emerging evidence indicates the appearance of differentially expressed (DE) miRNAs in CI-AKI following the injection of intravenous contrast medium. However, there are differences in the pathological mechanism and incidence of CI-AKI between intravenous and intra-arterial contrast administration. The present study aimed to investigate the critical roles of dysregulated miRNAs and their associated mRNAs in kidney injury following intra-arterial contrast medium exposure. Based on a reliable CI-AKI rat model, we conducted genome-wide miRNA and mRNA expression profiling analysis using deep sequencing. In the study, 36 DE mature miRNAs were identified (fold change > 1.5 and p value < 0.05) in the kidneys of CI-AKI rats (n = 3) compared with that in the controls (n = 3), consisting of 23 up-regulated and 13 down-regulated DE miRNAs. Bioinformatic analysis revealed that wingnut (Wnt), transforming growth factor beta (TGF-β), and 5'-AMP-activated protein kinase (AMPK) signaling pathways were most likely to be modulated by these dysregulated miRNAs. Around 453 dysregulated genes (fold change > 2.0 and p value < 0.05) were identified. Integrated analysis revealed 2037 putative miRNA-mRNA pairs with negative correlations. Among them, 6 DE miRNAs and 13 genes were selected for further quantitative real-time reverse transcription polymerase chain reaction validation (n = 6 for each group), and a good correspondence between the two techniques was observed. In conclusion, the present study provided evidence of miRNA-mRNA interactions in the development of kidney injury following an intra-arterial contrast injection. These findings provide insights into the underlying mechanisms of CI-AKI.
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- 2019
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33. Functional Specialty of CD40 and Dendritic Cell Surface Lectins for Exogenous Antigen Presentation to CD8+ and CD4+ T Cells
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Wenjie Yin, Laurent Gorvel, Sandra Zurawski, Dapeng Li, Ling Ni, Dorothée Duluc, Katherine Upchurch, JongRok Kim, Chao Gu, Richard Ouedraogo, Zhiqing Wang, Yaming Xue, HyeMee Joo, Jean-Pierre Gorvel, Gerard Zurawski, and SangKon Oh
- Subjects
Dendritic cell ,Cross-presentation ,CD40 ,Lectins ,Vaccine ,Medicine ,Medicine (General) ,R5-920 - Abstract
Dendritic cells (DCs) are major antigen-presenting cells that can efficiently prime and cross-prime antigen-specific T cells. Delivering antigen to DCs via surface receptors is thus an appealing strategy to evoke cellular immunity. Nonetheless, which DC surface receptor to target to yield the optimal CD8+ and CD4+ T cell responses remains elusive. Herein, we report the superiority of CD40 over 9 different lectins and scavenger receptors at evoking antigen-specific CD8+ T cell responses. However, lectins (e.g., LOX-1 and Dectin-1) were more efficient than CD40 at eliciting CD4+ T cell responses. Common and distinct patterns of subcellular and intracellular localization of receptor-bound αCD40, αLOX-1 and αDectin-1 further support their functional specialization at enhancing antigen presentation to either CD8+ or CD4+ T cells. Lastly, we demonstrate that antigen targeting to CD40 can evoke potent antigen-specific CD8+ T cell responses in human CD40 transgenic mice. This study provides fundamental information for the rational design of vaccines against cancers and viral infections.
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- 2016
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34. Targeting HIV-1 Env gp140 to LOX-1 Elicits Immune Responses in Rhesus Macaques.
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Gerard Zurawski, Sandra Zurawski, Anne-Laure Flamar, Laura Richert, Ralf Wagner, Georgia D Tomaras, David C Montefiori, Mario Roederer, Guido Ferrari, Christine Lacabaratz, Henri Bonnabau, Peter Klucar, Zhiqing Wang, Kathryn E Foulds, Shing-Fen Kao, Nicole L Yates, Celia LaBranche, Bertram L Jacobs, Karen Kibler, Benedikt Asbach, Alexander Kliche, Andres Salazar, Steve Reed, Steve Self, Raphael Gottardo, Lindsey Galmin, Deborah Weiss, Anthony Cristillo, Rodolphe Thiebaut, Giuseppe Pantaleo, and Yves Levy
- Subjects
Medicine ,Science - Abstract
Improved antigenicity against HIV-1 envelope (Env) protein is needed to elicit vaccine-induced protective immunity in humans. Here we describe the first tests in non-human primates (NHPs) of Env gp140 protein fused to a humanized anti-LOX-1 recombinant antibody for delivering Env directly to LOX-1-bearing antigen presenting cells, especially dendritic cells (DC). LOX-1, or 1ectin-like oxidized low-density lipoprotein (LDL) receptor-1, is expressed on various antigen presenting cells and endothelial cells, and is involved in promoting humoral immune responses. The anti-LOX-1 Env gp140 fusion protein was tested for priming immune responses and boosting responses in animals primed with replication competent NYVAC-KC Env gp140 vaccinia virus. Anti-LOX-1 Env gp140 vaccination elicited robust cellular and humoral responses when used for either priming or boosting immunity. Co-administration with Poly ICLC, a TLR3 agonist, was superior to GLA, a TLR4 agonist. Both CD4+ and CD8+ Env-specific T cell responses were elicited by anti-LOX-1 Env gp140, but in particular the CD4+ T cells were multifunctional and directed to multiple epitopes. Serum IgG and IgA antibody responses induced by anti-LOX-1 Env gp140 against various gp140 domains were cross-reactive across HIV-1 clades; however, the sera neutralized only HIV-1 bearing sequences most similar to the clade C 96ZM651 Env gp140 carried by the anti-LOX-1 vehicle. These data, as well as the safety of this protein vaccine, justify further exploration of this DC-targeting vaccine approach for protective immunity against HIV-1.
- Published
- 2016
- Full Text
- View/download PDF
35. Lgr5 Methylation in Cancer Stem Cell Differentiation and Prognosis-Prediction in Colorectal Cancer.
- Author
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Shasha Su, Feng Hong, Yanling Liang, Jieqiong Zhou, Yan Liang, Kequan Chen, Xinying Wang, Zhongqiu Wang, Zhiqing Wang, Cassie Chang, Weihua Han, Wei Gong, Haitao Qin, Bo Jiang, Huabao Xiong, and Liang Peng
- Subjects
Medicine ,Science - Abstract
Leucine-rich-repeat-containing G-protein-coupled receptor 5 (lgr5) is a candidate marker for colorectal cancer stem cells (CSC). In the current study, we investigated the methylation status within thelgr5 promoter and evaluated its relationship with CSC differentiation, prognosis for colorectal cancer, and its clinicopathological features.The methylation status within Lgr5 promoter was detected with a methylation-specific PCR in six colorectal cancer cell lines as well as 169 primary colorectal tumor tissues. Differentiation of CSC was examined with immunofluorescence and immunocytochemistry. Down-regulation of lgr5 was achieved with gene-specific siRNA. The associations between lgr5 methylation and the clinicopathological features as well as survival of patients were analyzed with statistical methods.The lgr5 promoter was methylated to different degrees for the six colorectal cell lines examined, with complete methylation observed in HCT116 cells in which the lgr5 expression was partially recovered following DAC treatment. The stem-cell sphere formation from HCT116 cells was accompanied by increasing methylation within the lgr5 promoter and decreasing expression of lgr5. Knocking down lgr5 by siRNA also led to stem-cell spheres formation. Among primary colorectal tumors, 40% (67/169) were positive for lgr5 methylation, while none of the normal colon tissues were positive for lgr5 methylation. Furthermore, lgr5 methylation significantly associated with higher tumor grade, and negative distant metastasis (p < 0.05), as well as better prognosis (p = 0.001) in patients with colorectal cancer.Our data suggests that lgr5 methylation, through the regulation of lgr5 expression and colorectal CSC differentiation, may constitute a novel prognostic marker for colorectal cancer patients.
- Published
- 2015
- Full Text
- View/download PDF
36. Equivalent Circulation Density Analysis of Geothermal Well by Coupling Temperature
- Author
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Xiuhua Zheng, Chenyang Duan, Zheng Yan, Hongyu Ye, Zhiqing Wang, and Bairu Xia
- Subjects
wellbore pressure analysis ,equivalent circulating density ,geothermal well ,wellbore temperature distribution ,mathematical modeling ,Technology - Abstract
The accurate control of the wellbore pressure not only prevents lost circulation/blowout and fracturing formation by managing the density of the drilling fluid, but also improves productivity by mitigating reservoir damage. Calculating the geothermal pressure of a geothermal well by constant parameters would easily bring big errors, as the changes of physical, rheological and thermal properties of drilling fluids with temperature are neglected. This paper researched the wellbore pressure coupling by calculating the temperature distribution with the existing model, fitting the rule of density of the drilling fluid with the temperature and establishing mathematical models to simulate the wellbore pressures, which are expressed as the variation of Equivalent Circulating Density (ECD) under different conditions. With this method, the temperature and ECDs in the wellbore of the first medium-deep geothermal well, ZK212 Yangyi Geothermal Field in Tibet, were determined, and the sensitivity analysis was simulated by assumed parameters, i.e., the circulating time, flow rate, geothermal gradient, diameters of the wellbore, rheological models and regimes. The results indicated that the geothermal gradient and flow rate were the most influential parameters on the temperature and ECD distribution, and additives added in the drilling fluid should be added carefully as they change the properties of the drilling fluid and induce the redistribution of temperature. To ensure the safe drilling and velocity of pipes tripping into the hole, the depth and diameter of the wellbore are considered to control the surge pressure.
- Published
- 2017
- Full Text
- View/download PDF
37. Dual Mean-Teacher: An Unbiased Semi-Supervised Framework for Audio-Visual Source Localization.
- Author
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Yuxin Guo, Shijie Ma, Hu Su, Zhiqing Wang, Yuhao Zhao, Wei Zou, Siyang Sun, and Yun Zheng
- Published
- 2024
- Full Text
- View/download PDF
38. Multiple Sound Source Localization Exploiting Robot Motion and Approaching Control.
- Author
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Zhiqing Wang, Wei Zou, Hu Su, Yuxin Guo, and Donghui Li
- Published
- 2023
- Full Text
- View/download PDF
39. Enhanced CoCoSo method for picture 2-tuple linguistic MAGDM and applications to classroom teaching quality evaluation of college physical education.
- Author
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Xinggang Lei and Zhiqing Wang
- Published
- 2023
- Full Text
- View/download PDF
40. Dual Mean-Teacher: An Unbiased Semi-Supervised Framework for Audio-Visual Source Localization.
- Author
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Yuxin Guo, Shijie Ma, Hu Su, Zhiqing Wang, Yuhao Zhao, Wei Zou, Siyang Sun, and Yun Zheng
- Published
- 2023
41. 5G Wireless Network Digital Twin System Based on High Precision Simulation.
- Author
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Zhongqiu Xiang, Zhiqing Wang, Kai Fu, Xuemin Huang, Fan Chen, Pei Zhao, Shumin Jiang, Yantao Han, Wenzhi Li, and Feng Gao
- Published
- 2022
- Full Text
- View/download PDF
42. A Fast Sparse Hyperbolic Radon Transform Based on Convolutional Neural Network and Its Demultiple Application.
- Author
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Yaru Xue, Hewei Shen, Ming Jiang 0021, Luyu Feng, Mengjun Guo, and Zhiqing Wang
- Published
- 2022
- Full Text
- View/download PDF
43. Dancing and recrystallizing of Na2CO3 particles during catalytic gasification: Instructing the industrial catalysts loading procedures
- Author
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Yangang, Mei, Qian, Zhang, Zhiqing, Wang, Songping, Gao, and Yitian, Fang
- Published
- 2022
- Full Text
- View/download PDF
44. Efficient 3D Path Planning for Underwater Vehicle Based on Non-Uniformly Modeling.
- Author
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Kaihui Wang, Hu Su, Wei Zou, Hongxuan Ma, Chi Zhang 0032, and Zhiqing Wang
- Published
- 2021
- Full Text
- View/download PDF
45. A Simple But Effective Method for the Enrichment of Al in Red Mud Waste
- Author
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Feng, Haiwei, primary, Zhiqing, Wang, additional, Feng, Sihang, additional, Sun, Haochen, additional, Huang, Jiejie, additional, Guo, Zhenxing, additional, Liu, Zheyu, additional, Hao, Zhenhua, additional, and Yitian, Fang, additional
- Published
- 2024
- Full Text
- View/download PDF
46. Transformer Secondary Voltage Based Resonant Frequency Tracking for LLC Converter.
- Author
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Yuqi Wei, Quanming Luo, Zhiqing Wang, and H. Alan Mantooth
- Published
- 2021
- Full Text
- View/download PDF
47. Visual Road Boundary Detection based Local Path Planner.
- Author
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Ning Li, Xijun Zhao, Bo Su, and Zhiqing Wang
- Published
- 2019
- Full Text
- View/download PDF
48. Object Guided Beam Steering Algorithm for Optical Phased Array (OPA) LIDAR.
- Author
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Zhiqing Wang, Zhiyu Xiang, and Eryun Liu
- Published
- 2019
- Full Text
- View/download PDF
49. Optimal Power Allocations for Relay-assisted NOMA-based 5G V2X Broadcast/Multicast Communications.
- Author
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Zhiqing Wang, Jiewen Hu, Gang Liu 0007, and Zheng Ma 0001
- Published
- 2018
- Full Text
- View/download PDF
50. The Association Between Angiographically Derived Radial Wall Strain and the Risk of Acute Myocardial Infarction
- Author
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Chenguang Li, Zhiqing Wang, Hao Yang, Huihong Hong, Chunming Li, Rende Xu, Yizhe Wu, Feng Zhang, Juying Qian, Lianglong Chen, Shengxian Tu, and Junbo Ge
- Subjects
Cardiology and Cardiovascular Medicine - Published
- 2023
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