32 results on '"Du, Zhenhua"'
Search Results
2. From lab to clinic: The discovery and optimization journey of PI3K inhibitors.
- Author
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Lian S, Du Z, Chen Q, Xia Y, Miao X, Yu W, Sun Q, and Feng C
- Subjects
- Humans, Animals, Antineoplastic Agents chemistry, Antineoplastic Agents pharmacology, Neoplasms drug therapy, Protein Kinase Inhibitors pharmacology, Protein Kinase Inhibitors chemistry, Protein Kinase Inhibitors chemical synthesis, Molecular Structure, Structure-Activity Relationship, Phosphoinositide-3 Kinase Inhibitors pharmacology, Phosphoinositide-3 Kinase Inhibitors chemistry, Phosphoinositide-3 Kinase Inhibitors chemical synthesis, Drug Discovery, Phosphatidylinositol 3-Kinases metabolism
- Abstract
PI3K inhibitors have emerged as promising therapeutic agents due to their critical role in various cellular processes, particularly in cancer, where the PI3K pathway is frequently dysregulated. This review explores the evolutionary path of PI3K inhibitors from laboratory discovery to clinical application. The journey begins with early laboratory investigations into PI3K signaling and inhibitor development, highlighting fundamental discoveries that laid the foundation for subsequent advancements. Optimization strategies, including medicinal chemistry approaches and structural modifications, are scrutinized for their contributions to enhancing inhibitor potency, selectivity, and pharmacokinetic properties. The translation from preclinical studies to clinical trials is examined, emphasizing pivotal trials that evaluated efficacy and safety profiles. Challenges encountered during clinical development are critically assessed. Finally, the review discusses ongoing research directions and prospects for PI3K inhibitors, underscoring these agents' continuous evolution and therapeutic potential., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Masson SAS. All rights reserved.)
- Published
- 2024
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3. Challenges and Limitations of Extracorporeal Membrane Oxygenation Therapy in Severe Paraquat Poisoning: An Analysis of Unsuccessful Cases.
- Author
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Du Z, Zhang YH, and Sun L
- Subjects
- Humans, Male, Female, Adult, Treatment Failure, Middle Aged, Retrospective Studies, Extracorporeal Membrane Oxygenation, Paraquat poisoning, Herbicides poisoning
- Published
- 2024
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4. Clinical efficacy and safety of microwave ablation combined with percutaneous osteoplasty for palliative treatment in pelvic osteolytic metastases.
- Author
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Wang Z, Zuo T, Lin W, Du Z, Zhang X, and Liang Y
- Subjects
- Adult, Humans, Palliative Care, Quality of Life, Neoplasm Recurrence, Local surgery, Microwaves therapeutic use, Retrospective Studies, Treatment Outcome, Pain etiology, Bone Neoplasms secondary, Cementoplasty adverse effects, Catheter Ablation adverse effects
- Abstract
Objectives: To evaluate the impact of microwave ablation (MWA) on pain relief, quality of life, mobility, and local tumour progression in adult patients with pelvic osteolytic bone metastasis and to test the safety of MWA., Methods: This study retrospectively analysed the data from 20 patients with pelvic osteolytic metastases who received MWA combined with percutaneous osteoplasty (POP). The visual analogue scale (VAS), musculoskeletal tumour society system (MSTS), and Quality of Life Questionnaire-Bone Metastases 22 (QLQ-BM22) were used to evaluate the pain, limb function, and quality of life. The intraoperative and postoperative complications were recorded. The tumour recurrence and survival time were analysed during the follow-up period (range 3-26 months)., Results: All (n = 20) MWA and POP operations were completed successfully. Four patients (20%; 95% CI, 6%-44%) had mild bone cement leakage from surrounding tissues, and there were no obvious symptoms or serious complications. There were significant differences in VAS, MSTS, and QLQ-BM22 scores before and after the operation (P < .001). During the postoperative follow-up period, 9 patients died. The median survival time was 8 months (range 3-26 months; IQR: 4.5-13; 95% CI, 4.2-15.3 months), and the 1-year survival rate was 65% (13/20; 95% CI, 41%-85%). Tumour recurrence occurred in 4 cases (20%; 95% CI, 6%-44%) after the operation, and the median time of recurrence was 12 months (range 8-16 months; IQR: 8.25-12.75; 95% CI, 5.5-18.5 months)., Conclusions: MWA combined with POP is an effective and safe treatment for pelvic osteolytic metastases. It can significantly relieve local pain, reconstruct limb function, improve patients' quality of life, and effectively control local tumour progression., Advances in Knowledge: So far, the experience of using microwave in the treatment of pelvic metastases is still limited. MWA combined with POP in the treatment of pelvic osteolytic metastases can provide significant clinical benefits in acceptable low-risk minimally invasive situations and should be provided to patients with appropriate pelvic metastases in a multidisciplinary approach., (© The Author(s) 2023. Published by Oxford University Press on behalf of the British Institute of Radiology. All rights reserved. For permissions, please email: journals.permissions@oup.com.)
- Published
- 2024
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5. Corrigendum to "The optimal dose of arsenic trioxide induced opposite efficacy in autophagy between K562 cells and their initiating cells to eradicate human myelogenous leukemia" [J. Ethnopharmacol. 196 (2017) 29-38].
- Author
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Guo Z, Meng M, Geng S, Du Z, Zheng Y, Yao J, Li Z, Han G, Lin H, and Du G
- Published
- 2024
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6. Immunogenicity and safety of a live attenuated varicella vaccine co-administered with inactive hepatitis A vaccine: A phase 4, single-center, randomized, controlled trial.
- Author
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Sun D, Yu D, Du Z, Jia N, Liu X, Sun J, Xu Q, Sun Z, Luan C, Lv J, Xiong P, Zhang L, Sha X, Gao Y, and Kang D
- Subjects
- Child, Humans, Hepatitis A Vaccines, Hepatitis A Antibodies, Chickenpox Vaccine, Vaccines, Inactivated, Antibodies, Viral, Vaccines, Attenuated, Immunogenicity, Vaccine, Herpes Zoster Vaccine, Viral Vaccines
- Abstract
Co-administration of vaccines can facilitate the introduction of new vaccines in immunization schedules. This study aimed to evaluate the immunogenicity and safety of co-administration with live attenuated varicella vaccine (VarV) and inactivated hepatitis A vaccine (HepA) among children aged 12 ~ 15 months. In this phase 4 clinical trial, 450 children were randomized with a ratio of 1:1 to receive VarV and Hep A simultaneously (Group A) or separately (Group B). The primary endpoints were the seroconversion rate of anti-varicella-zoster virus (VZV) antibodies 42 days after vaccination of VarV and the seroconversion rate of anti-Hepatitis A virus (HAV) antibodies 30 days after two-dose vaccination of HepA. After full immunization, the seroconversion rates of anti-VZV antibodies were 91.79% in Group A and 92.15% in Group B; the geometric mean titers (GMTs) were 11.80 and 12.19, respectively. The seroconversion rates of anti-HAV antibodies were 99.48% in Group A and 100.0% in Group B; the geometric mean concentrations (GMCs) reached 9499.11 and 9528.36 mIU/ml, respectively. The lower limits of the 95% CI for the seroconversion difference of anti-VZV antibodies and anti-HAV antibodies were -5.86% and -2.90%, which greater than the predefined non-inferiority margin (-10%). The incidence rate of adverse reactions in Group A was lower than Group B (9.33% vs 16.22%), and only one serious adverse event was reported in Group B, which was unrelated to the study vaccine. In conclusion, the co-administration of VarV with HepA has non-inferior immunogenicity and safety profiles were quite comparable with the separate administration of both vaccines. Trial registration number : NCT05526820 (ClinicalTrials.gov).
- Published
- 2023
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7. Correction: 6-Gingerol as an arginase inhibitor prevents urethane-induced lung carcinogenesis by reprogramming tumor supporting M2 macrophages to M1 phenotype.
- Author
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Yao J, Du Z, Li Z, Zhang S, Lin Y, Li H, Zhou L, Wang Y, Yan G, Wu X, Duan Y, and Du G
- Abstract
Correction for '6-Gingerol as an arginase inhibitor prevents urethane-induced lung carcinogenesis by reprogramming tumor supporting M2 macrophages to M1 phenotype' by Jingjing Yao et al. , Food Funct. , 2018, 9 , 4611-4620, https://doi.org/10.1039/C8FO01147H.
- Published
- 2023
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8. Case Report: Clinical application of continuous arterial infusion chemotherapy in neoadjuvant therapy for locally advanced gastric cancer.
- Author
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Lin W, Huang Z, Du Z, Wang Y, and Zuo T
- Abstract
Platinum-fluorouracil combination chemotherapy is the standard neoadjuvant treatment for locally advanced gastric cancer in China, but it does not improve the survival benefit of patients. In recent years, the application of immune checkpoint inhibitors and/or targeted drugs in neoadjuvant therapy for gastric cancer has achieved certain efficacy, but the survival benefit of patients is still not obvious. Intra-arterial infusion chemotherapy, as a method of regional therapy, has been widely used in the treatment of many advanced tumors and achieved remarkable curative effect. The role of arterial infusion chemotherapy in neoadjuvant therapy for gastric cancer is not clear. We describe two patients with locally advanced gastric cancer treated with continuous arterial infusion neoadjuvant chemotherapy. Two patients received continuous arterial infusion of chemotherapy drugs for 50 hours, the drugs were pumped into the main feeding artery of the tumor through the arterial catheter. A total of 4 cycles were followed, then undergone surgical resection. The postoperative pathological pCR of two patients was 100%, TRG was 0 grade, and no further anti-tumor therapy was required after operation, achieving clinical cure. During the treatment period, no serious adverse events occurred in either patient. These results suggest that continuous arterial infusion chemotherapy may be a new adjuvant therapy for locally advanced gastric cancer., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Lin, Huang, Du, Wang and Zuo.)
- Published
- 2023
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9. Self-focusing and self-splitting properties of partially coherent temporal pulses propagating in dispersive media.
- Author
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Liu H, Du Z, Li Y, Chen H, and Lü Y
- Abstract
Based on the coherence theory for non-stationary optical fields, we introduce a new class of partially coherent pulse sources with multi-cosine-Gaussian correlated Schell-model (MCGCSM) and derive the analytic expression for the temporally mutual coherence function (TMCF) of an MCGCSM pulse beam when it propagates through dispersive media. The temporally average intensity (TAI) and the temporal degree of coherence (TDOC) of the MCGCSM pulse beams spreading in dispersive media are investigated numerically, respectively. Our results show that over propagation distance, the evolution of pulse beams is from the primary single beam into multiple subpulses or form flat-topped TAI distributions by controlling source parameters. Moreover, when the chirp coefficient s < 0, the MCGCSM pulse beams through dispersive media will show the characteristics of two self-focusing processes. The reason why there are two self-focusing processes is explained from the perspective of physical meaning. The results in this paper can open the applications of pulse beams in multiple pulse shaping and laser micromachining and material processing.
- Published
- 2023
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10. Effectiveness and Safety of Toripalimab Combination Therapies for Patients With Chemo-Resistant Choriocarcinoma.
- Author
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Liu X, Li X, Qu H, Zhang S, Zhang R, and Du Z
- Abstract
Toripalimab as a novel PD-1 inhibitor has presented its promising efficacy in patients who developed chemo-refractory carcinomas, whereas no study has ever investigated the effectiveness of toripalimab in chemo-resistant choriocarcinoma. Here we reported the effectiveness and safety data of 4 patients with chemo-resistant choriocarcinoma who underwent PD-1 antibody therapy by toripalimab and individualized chemotherapies. From January 2019 to August 2020, 4 patients with choriocarcinoma were admitted in Shengjing Hospital of China Medical University. The patients' age ranged from 29 to 52 years with a median of 36 years. All the patients achieved CR after the combined therapy of toripalimab with individualized chemotherapies according to the decreased serum β-hcg level. Two of the four patients were observed with treatment-related adverse events (AEs), including one grade I skin rash and one grade I pruritus. Our cases showed that toripalimab combined with chemotherapy presented a tolerable safety profile and promising effectiveness in patients with chemo-resistant choriocarcinoma, indicating its potential as salvage therapy for this subset of patients., Competing Interests: Author SZ and RZ were employed by Shanghai Junshi Biosciences Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Liu, Li, Qu, Zhang, Zhang and Du.)
- Published
- 2022
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11. Cancer death and potential years of life lost in Feicheng City, China: Trends from 2013 to 2018.
- Author
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Yang J, Zhao L, Zhang N, Du Z, Li Y, Li X, Zhao D, and Wang J
- Subjects
- China, Cost of Illness, Female, Humans, Life Expectancy, Male, Sex Distribution, Mortality, Premature, Neoplasms mortality
- Abstract
Abstract: This study aimed to evaluate the impact of cancer-related mortality on life expectancy in Feicheng City.We extracted the death records and population data of Feicheng City from 2013 to 2018 through the Feicheng Center for Disease Control and Prevention. The mortality, premature mortality, cause-eliminated life expectancy, potential years of life lost (PYLL), average potential years of life lost (APYLL), annual change percentage (APC), and other indicators of cancer were calculated. The age-standardized rates were calculated using the sixth national census (2010).From 2013 to 2018, the mortality rate of cancer in Feicheng City was 221.55/100,000, and the standardized mortality rate was 166.37/100,000. The standardized mortality rate increased from 2013 to 2014 and then decreased annually. The premature mortality of cancer was 8.98% and showed a downward trend (APC = -2.47%, t = -3.10, P = .04). From 2013 to 2018, the average life expectancy of residents in Feicheng City was 78.63 years. Eliminating the impact of cancer, life expectancy could increase by 3.72 years. The rate of life loss caused by cancer in men was higher than that in women. The total life loss caused by cancer deaths was 126,870.50 person-years, the potential life loss rate was 22.51‰, and the average potential life loss was 13.30 years. The standardized potential years of life lost rate showed a downward trend (APC = -2.96%, t = -3.72, P = .02), and APYLL decreased by 1.98% annually (t = -5.44, P = .01). The top 5 malignant tumors in APYLL were leukemia, breast cancer, brain tumor, liver cancer, and ovarian cancer.Lung cancer, esophageal cancer, female breast cancer, and childhood leukemia have a great impact on the life expectancy of residents in Feicheng City. Effective measures need to be taken to reduce the disease burden of malignant tumors., Competing Interests: The authors have no conflicts of interests to disclose., (Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2021
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12. Genome-wide association study identifies 7q11.22 and 7q36.3 associated with noise-induced hearing loss among Chinese population.
- Author
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Niu Y, Xie C, Du Z, Zeng J, Chen H, Jin L, Zhang Q, Yu H, Wang Y, Ping J, Yang C, Liu X, Li Y, and Zhou G
- Subjects
- Adaptor Proteins, Signal Transducing genetics, China, Cytoskeletal Proteins genetics, Genetic Predisposition to Disease genetics, Humans, Male, Receptor-Like Protein Tyrosine Phosphatases, Class 8 genetics, Transcription Factors genetics, Genome-Wide Association Study methods, Hearing Loss, Noise-Induced genetics, Polymorphism, Single Nucleotide genetics
- Abstract
Noise-induced hearing loss (NIHL) seriously affects the life quality of humans and causes huge economic losses to society. To identify novel genetic loci involved in NIHL, we conducted a genome-wide association study (GWAS) for this symptom in Chinese populations. GWAS scan was performed in 89 NIHL subjects (cases) and 209 subjects with normal hearing who have been exposed to a similar noise environment (controls), followed by a replication study consisting of 53 cases and 360 controls. We identified that four candidate pathways were nominally significantly associated with NIHL, including the Erbb, Wnt, hedgehog and intraflagellar transport pathways. In addition, two novel index single-nucleotide polymorphisms, rs35075890 in the intron of AUTS2 gene at 7q11.22 (combined P = 1.3 × 10
-6 ) and rs10081191 in the intron of PTPRN2 gene at 7q36.3 (combined P = 2.1 × 10-6 ), were significantly associated with NIHL. Furthermore, the expression quantitative trait loci analyses revealed that in brain tissues, the genotypes of rs35075890 are significantly associated with the expression levels of AUTS2, and the genotypes of rs10081191 are significantly associated with the expressions of PTPRN2 and WDR60. In conclusion, our findings highlight two novel loci at 7q11.22 and 7q36.3 conferring susceptibility to NIHL., (© 2020 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd.)- Published
- 2021
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13. Circ_0015756 promotes the progression of ovarian cancer by regulating miR-942-5p/CUL4B pathway.
- Author
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Du Z, Wang L, and Xia Y
- Abstract
Background: Ovarian cancer (OC) is the gynecologic cancer with the highest mortality. Circular RNAs (circRNAs) play a vital role in the development and progression of cancer. This study aimed to explore the potential role of circ_0015756 in OC and its molecular mechanism., Methods: The levels of circ_0015756, microRNA-942-5p (miR-942-5p) and Cullin 4B (CUL4B) were determined by quantitative real-time PCR (qRT-PCR) or Western blot assay. Cell proliferation, apoptosis, migration and invasion were assessed by Cell Counting Kit-8 (CCK-8), colony formation assay, flow cytometry and transwell assay. The levels of proliferation-related and metastasis-related proteins were measured by Western blot assay. The relationship between miR-942-5p and circ_0015756 or CUL4B was verified by dual-luciferase reporter assay, RNA immunoprecipitation assay and RNA pull-down assay. Xenograft assay was used to analyze tumor growth in vivo., Results: Circ_0015756 and CUL4B levels were increased, while miR-942-5p level was decreased in OC tissues and cells. Depletion of circ_0015756 suppressed proliferation, migration and invasion and promoted apoptosis in OC cells. Down-regulation of circ_0015756 hindered OC cell progression via modulating miR-942-5p. Also, up-regulation of miR-942-5p impeded OC cell development by targeting CUL4B. Mechanistically, circ_0015756 up-regulated CUL4B via sponging miR-942-5p. Moreover, circ_0015756 silencing inhibited tumor growth in vivo., Conclusion: Knockdown of circ_0015756 suppressed OC progression via regulating miR-942-5p/CUL4B axis, suggesting that circ_0015756 might be a potential therapeutic target for ovarian cancer.
- Published
- 2020
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14. Propagation characteristics of the perfect vortex beam in anisotropic oceanic turbulence.
- Author
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Hu Z, Liu H, Xia J, He A, Li H, Du Z, Chen T, Li Z, and Lü Y
- Abstract
The propagation model of orbital angular momentum (OAM) modes carried by the perfect vortex (pv) beam through anisotropic oceanic turbulence links is established and the factors influencing the OAM propagation are discussed. The findings show that the self-focusing property of pv beams is beneficial to the propagation of OAM modes: a smaller topological charge, a smaller initial radius, and an optimized half-ring width can alleviate degrading effects of turbulence on the pv beam. Additionally, the pv beam with a longer wavelength is more resistant to turbulent interference. The oceanic conditions with a higher dissipation rate of kinetic energy per unit mass of seawater, larger values of anisotropy and inner-scale factor, a smaller temperature-salinity contribution ratio, or a lower mean-squared temperature dissipation rate can improve the signal mode detection probability. The results are expected to further optimize the design of OAM-based underwater wireless communication systems.
- Published
- 2020
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15. Quantitative proteomics identifies a plasma multi-protein model for detection of hepatocellular carcinoma.
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Du Z, Liu X, Wei X, Luo H, Li P, Shi M, Guo B, Cui Y, Su Z, Zeng J, Si A, Cao P, and Zhou G
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- Adult, Aged, Carcinoma, Hepatocellular genetics, Carcinoma, Hepatocellular pathology, Female, Humans, Immunohistochemistry, Liver Neoplasms genetics, Liver Neoplasms pathology, Male, Middle Aged, Neoplasm Proteins genetics, Proteomics, Biomarkers, Tumor blood, Blood Proteins genetics, Carcinoma, Hepatocellular blood, Liver Neoplasms blood
- Abstract
More efficient biomarkers are needed to facilitate the early detection of hepatocellular carcinoma (HCC). We aimed to identify candidate biomarkers for HCC detection by proteomic analysis. First, we performed a global proteomic analysis of 10 paired HCC and non-tumor tissues. Then, we validated the top-ranked proteins by targeted proteomic analyses in another tissue cohort. At last, we used enzyme-linked immunosorbent assays to validate the candidate biomarkers in multiple serum cohorts including HCC cases (HCCs), cirrhosis cases (LCs), and normal controls (NCs). We identified and validated 33 up-regulated proteins in HCC tissues. Among them, eight secretory or membrane proteins were further evaluated in serum, revealing that aldo-keto reductase family 1 member B10 (AKR1B10) and cathepsin A (CTSA) can distinguish HCCs from LCs and NCs. The area under the curves (AUCs) were 0.891 and 0.894 for AKR1B10 and CTSA, respectively, greater than that of alpha-fetoprotein (AFP; 0.831). Notably, combining the three proteins reached an AUC of 0.969, which outperformed AFP alone (P < 0.05). Furthermore, the serum AKR1B10 levels dramatically decreased after surgery. AKR1B10 and CTSA are potential serum biomarkers for HCC detection. The combination of AKR1B10, CTSA, and AFP may improve the HCC diagnostic efficacy.
- Published
- 2020
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16. Propagation of orbital angular momentum modes carried by hollow vortex Gaussian beams in anisotropic atmospheric turbulence.
- Author
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Hu Z, Liu H, Xia J, He A, Du Z, Li Y, Li Z, Chen T, Li H, and Lü Y
- Abstract
We establish the propagation model of orbital angular momentum (OAM) modes carried by hollow vortex Gaussian (hvG) beams propagating in anisotropic atmospheric turbulence. Effects of light source parameters and atmospheric conditions on the OAM mode propagation performance are investigated in detail. The findings indicate the hvG beam with a smaller OAM quantum number, a larger beam order, or a longer source wavelength has more robust resistance to atmospheric turbulence interference. The waist width of the light source has different influences on the OAM mode propagation at different propagation distances. Atmospheric turbulences with larger values of anisotropy, inner-scale factor, non-Kolmogorov power spectrum index, and altitude are favorable for the OAM mode propagation. These research results are conducive to optimizing the design of light sources and space wireless communication systems with hvG beams.
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- 2020
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17. Therapeutic effect of bevacizumab combined with chemotherapy in patients with platinum-resistant ovarian cancer and its effect on vascular cell adhesion molecule 1 and FBXW7.
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Du Z, Liu X, and Pan X
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- 2020
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18. A six-CpG-based methylation markers for the diagnosis of ovarian cancer in blood.
- Author
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Wang L, Ni S, Du Z, and Li X
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- Case-Control Studies, Female, Humans, Ovarian Neoplasms blood, Ovarian Neoplasms genetics, Prognosis, Biomarkers, Tumor blood, Biomarkers, Tumor genetics, CpG Islands, DNA Methylation, Epigenesis, Genetic, Gene Expression Regulation, Neoplastic, Ovarian Neoplasms diagnosis
- Abstract
DNA methylation markers in the peripheral blood are able to be applied to treat epithelial cancer. Nevertheless, the diagnostic potential value of it for ovarian cancer (OV) has not been studied. The study aimed to explore the difference of DNA methylation in peripheral blood between OV patients and healthy women. Firstly, the whole blood of DNA methylation data was provided by the Gene Expression Omnibus (GEO) database. The linear model was applied to the identification of significantly differentially expressed methylated CpG sites (differentially methylation sites [DMP]), and the further screen of co-expression CpG sites (Co-DMP). A total of 2812 DMPs were identified, and weighted gene co-expression network analysis helped to obtain seven co-expression modules. Among them, the yellow module was the most related to OV. Co-DMPs (167) in the yellow module were mainly distributed near the transcription start sites. However, most of them were not in the CpG island. Least absolute shrinkage and selection operator (LASSO) regression analysis was applied to the identification of stable OV-related blood biomarkers that six Co-DMPs (cg00134539, cg00226923, cg25268718, cg25697314, cg25839227, cg26574610) with the highest frequency were found as potential biomarkers. Finally, the diagnostic classifier was established using the support vector machine (SVM) with the accuracy rate of 87.1% and 74.5% in training data set and validation data set, respectively. To sum up, a new feature was provided here for the diagnosis of OV, which is helpful for the diagnosis and individualized treatments of early OV., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2020
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19. Determination of hemolysis index thresholds for biochemical tests on Siemens Advia 2400 chemistry analyzer.
- Author
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Du Z, Liu J, Zhang H, Bao B, Zhao R, and Jin Y
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- Hematologic Tests instrumentation, Hemoglobins analysis, Humans, Blood Chemical Analysis instrumentation, Blood Chemical Analysis methods, Hemolysis
- Abstract
Background: In vitro hemolysis is still the most common source of pre-analytical nonconformities. This study aimed to investigate the hemolytic effects on commonly used biochemical tests as well as to determine the hemolysis index (HI) thresholds on Siemens Advia 2400 chemistry analyzer., Methods: Peripheral blood samples were collected from forty healthy volunteers. Hemolysis was achieved using syringes. Five hemolysis levels were produced including the no hemolysis group, slight hemolysis group, mild hemolysis group, moderate hemolysis group, and heavy hemolysis group. We then used the bias from baseline (no hemolysis) and HI to construct regression functions. The HI corresponding to the bias limits was considered as HI thresholds. We chose the total allowable error (TAE) as the bias limit., Results: Of the twenty-eight analytes, ten analytes had clinical significance. Creatine kinase-MB, creatine kinase, potassium, aspartate aminotransferase, and hydroxybutyrate dehydrogenase were all positively affected; the corresponding HI threshold was 45.2, 99.96, 4.07, 10.16, and 7.94, respectively. Lactate dehydrogenase was also positively interfered, but we failed to calculate the HI threshold. Total bile acid, uric acid, and sodium were all negatively affected, and the HI threshold was 42.23, 500 and 501.8, respectively. Glucose was also negatively interfered, but it failed to achieve the HI threshold., Conclusions: When the HI value was higher than its threshold, the corresponding analyte was considered inappropriate for reporting. The implementation of the assay-specific HI thresholds could provide an accurate method to identify analytes interfered by hemolysis, which would improve clinical interpretations and further boost laboratory quality by reducing errors associated with hemolysis., (© 2019 The Authors Journal of Clinical Laboratory Analysis Published by Wiley Periodicals, Inc.)
- Published
- 2019
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20. Momordicoside G Regulates Macrophage Phenotypes to Stimulate Efficient Repair of Lung Injury and Prevent Urethane-Induced Lung Carcinoma Lesions.
- Author
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Du Z, Zhang S, Lin Y, Zhou L, Wang Y, Yan G, Zhang M, Wang M, Li J, Tong Q, Duan Y, and Du G
- Abstract
Momordicoside G is a bioactive component from Momordica charantia , this study explores the contributions of macrophages to the effects of momordicoside G on lung injury and carcinoma lesion. In vitro , when administered at the dose that has no effect on cell viability in M2-like macrophages, momordicoside G decreased ROS and promoted autophagy and thus induced apoptosis in M1-like macrophages with the morphological changes. In the urethane-induced lung carcinogenic model, prior to lung carcinoma lesions, urethane induced obvious lung injury accompanied by the increased macrophage infiltration. The lung carcinoma lesions were positively correlated with lung tissue injury and macrophage infiltration in alveolar cavities in the control group, these macrophages showed mainly a M1-like (iNOS
+ /CD68+ ) phenotype. ELISA showed that the levels of IL-6 and IL-12 were increased and the levels of IL-10 and TGF-β1 were reduced in the control group. After momordicoside G treatment, lung tissue injury and carcinoma lesions were ameliorated with the decreased M1-like macrophages and the increased M2-like (arginase+ /CD68+ ) macrophages, whereas macrophage depletion by liposome-encapsulated clodronate (LEC) decreased significantly lung tissue injury and carcinoma lesions and also attenuated the protective efficacy of momordicoside G. The M2 macrophage dependent efficacy of momordicoside G was confirmed in a LPS-induced lung injury model in which epithelial closure was promoted by the transfer of M2-like macrophages and delayed by the transfer of M1-like macrophages. To acquire further insight into the underlying molecular mechanisms by which momordicoside G regulates M1 macrophages, we conduct a comprehensive bioinformatics analysis of momordicoside G relevant targets and pathways involved in M1 macrophage phenotype. This study suggests a function of momordicoside G, whereby it selectively suppresses M1 macrophages to stimulate M2-associated lung injury repair and prevent inflammation-associated lung carcinoma lesions.- Published
- 2019
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21. 6-Gingerol as an arginase inhibitor prevents urethane-induced lung carcinogenesis by reprogramming tumor supporting M2 macrophages to M1 phenotype.
- Author
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Yao J, Du Z, Li Z, Zhang S, Lin Y, Li H, Zhou L, Wang Y, Yan G, Wu X, Duan Y, and Du G
- Subjects
- Animals, Arginase genetics, Arginase immunology, Female, Humans, Interleukin-10 genetics, Interleukin-10 immunology, Interleukin-12 genetics, Interleukin-12 immunology, Lung drug effects, Lung immunology, Lung pathology, Lung Neoplasms chemically induced, Lung Neoplasms enzymology, Lung Neoplasms immunology, Macrophages immunology, Mice, Mice, Inbred ICR, Nitric Oxide Synthase Type II genetics, Nitric Oxide Synthase Type II immunology, Reactive Oxygen Species immunology, Arginase antagonists & inhibitors, Catechols administration & dosage, Enzyme Inhibitors administration & dosage, Fatty Alcohols administration & dosage, Lung Neoplasms prevention & control, Macrophages drug effects, Urethane adverse effects
- Abstract
6-Gingerol (6-G) is the main bioactive component in Ginger (Zingiber officinale Roscoe). The aim of this study was to explore the contribution of macrophage polarization in 6-G-associated anti-cancer effects. In a urethane-induced lung carcinogenic model, lung carcinogenesis was positively correlated with macrophage (F4/80+) infiltration in lung interstitial in the control group. Furthermore, higher numbers of arginase+/F4/80+ M2 cells than iNOS+/F4/80+ M1 cells were observed in interstitial macrophages. Moreover, macrophage depletion by liposome-encapsulated clodronate (LEC) could significantly prevent lung carcinogenesis, whereas pexidartinib promoted lung carcinogenesis. After 6-G treatment, lung carcinogenesis was ameliorated with increased M1 macrophages and decreased M2 macrophages in the lung interstitial. ELISA showed that the levels of IFN-γ and IL-12 increased and the levels of IL-10 and TGF-β1 decreased in the alveolar cavity compared to those in the control group. Unexpectedly, the carcinogenesis-preventing efficacy of 6-G was promoted in LEC-treated mice, but completely aborted in pexidartinib-treated mice. In the in vitro experiment, 6-G reset the IL-4-induced arginase+ M2 cells toward iNOS+ M1 cells and exhibited reduced levels of arginase 1 and ROS and elevated levels of L-arginine and NO. LEC and nor-NOHA selectively suppressed M2 macrophages but had a negligible effect on M1 macrophages, whereas pexidartinib decreased both M2 and M1 macrophages. The iNOS+ macrophage-promoting efficacy of 6-G was increased by LEC, but was completely eliminated by pretreatment with pexidartinib or nor-NOHA. M2 macrophage-resetting efficacy of 6-G was confirmed in a Lewis lung cancer allograft model. This study indicated a reprogramming effect of 6-G as an arginase inhibitor on tumor supporting macrophages.
- Published
- 2018
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22. m 6 A demethylase FTO facilitates tumor progression in lung squamous cell carcinoma by regulating MZF1 expression.
- Author
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Liu J, Ren D, Du Z, Wang H, Zhang H, and Jin Y
- Subjects
- Adenosine metabolism, Alpha-Ketoglutarate-Dependent Dioxygenase FTO antagonists & inhibitors, Alpha-Ketoglutarate-Dependent Dioxygenase FTO genetics, Carcinoma, Squamous Cell etiology, Carcinoma, Squamous Cell genetics, Cell Line, Tumor, Disease Progression, Gene Expression Regulation, Neoplastic, Gene Knockdown Techniques, Humans, Kruppel-Like Transcription Factors genetics, Lung Neoplasms etiology, Lung Neoplasms genetics, Oncogenes, Prognosis, RNA Stability, RNA, Messenger genetics, RNA, Messenger metabolism, RNA, Neoplasm genetics, RNA, Neoplasm metabolism, Adenosine analogs & derivatives, Alpha-Ketoglutarate-Dependent Dioxygenase FTO metabolism, Carcinoma, Squamous Cell metabolism, Kruppel-Like Transcription Factors metabolism, Lung Neoplasms metabolism
- Abstract
N
6 -Methyladenosine (m6 A) represents the most prevalent internal modification in mammalian mRNAs. Emerging evidences suggest that m6 A modification is profoundly implicated in many biological processes, including cancer development. However, limited knowledge is available about the functional importance of m6 A in lung cancer. In this study, by data mining The Cancer Genome Atlas (TCGA) database, we first identified fat mass- and obesity-associated protein (FTO) as a prognostic factor for lung squamous cell carcinoma (LUSC). Then we showed that FTO, but not other m6 A modification genes including METTL3, METTL14 and ALKBH5, was the major dysregulated factor responsible for aberrant m6 A modification in LUSC. Loss-of-function studies suggested that FTO knockdown effectively inhibited cell proliferation and invasion, while promoted cell apoptosis of L78 and NCI-H520 cells. Furthermore, overexpression of FTO, but not its mutant form, facilitated the malignant phenotypes of CHLH-1 cells. Mechanistically, FTO enhanced MZF1 expression by reducing m6 A levels and mRNA stability in MZF1 mRNA transcript, leading to oncogenic functions. Taken together, our study demonstrates the functional importance of FTO in the tumor progression of LUSC and provides a potential therapeutic target for LUSC treatment., (Copyright © 2018 Elsevier Inc. All rights reserved.)- Published
- 2018
- Full Text
- View/download PDF
23. Expression of factors and key components associated with the PI3K signaling pathway in colon cancer.
- Author
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Chen H, Gao J, Du Z, Zhang X, Yang F, and Gao W
- Abstract
The pathophysiology of colorectal cancer (CRC) has not been fully elucidated. The dysregulation of the phosphatidylinositol 3-kinase (PI3K) signaling pathway frequently contributes to the tumorigenesis and progression of human cancer. The aim of the present study was to explore the expression and clinical significance of a number of associated factors and key components of the PI3K signaling pathway, including phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit α (p110α), phosphorylated protein kinase B (p-Akt) Ser473, p-mammalian target of rapamycin (mTOR) Ser2448, cyclin D1, cyclin dependent kinase (CDK)4, RELA proto-oncogene, nuclear factor-κβ subunit (p65), Ras and extracellular signal-regulated kinase (ERK)1/2 in human CRC. The expression of target proteins was detected using immunohistochemistry (IHC) in 65 CRC cases and 15 colonic adenoma cases. The association between the expression of target proteins and clinical pathological parameters was analyzed using a χ
2 test. IHC results revealed that the expression of all target proteins was significantly increased in CRC tissues compared with in colonic adenoma tissues (P<0.05). No significant associations were observed between the expression of p110α, p-Akt Ser473, p-mTOR Ser2448 and sex, age, differentiation, lymph node metastasis or Tumor-Node-Metastasis staging (P>0.05). Cyclin D1, CDK4 and Ras were revealed to be expressed significantly higher in poorly differentiated CRC compared with moderately differentiated CRC (P<0.05). Expression of p65 and ERK1/2 were significantly increased in cancer tissues with lymph node metastasis compared with cancer tissues without lymph node metastasis (P<0.05). These results suggest that the target proteins may all participate in the tumorigenesis of CRC. Furthermore, cyclin D1, CDK4, Ras, p65 and ERK1/2 may be important in the progression of CRC. The results of the present study may provide novel predictive factors and therapeutic targets for CRC.- Published
- 2018
- Full Text
- View/download PDF
24. Treatment of Uterine Sarcoma with rAd-p53 (Gendicine) Followed by Chemotherapy: Clinical Study of TP53 Gene Therapy.
- Author
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Xia Y, Du Z, Wang X, and Li X
- Subjects
- Adenoviridae genetics, Adult, Bleomycin administration & dosage, Cisplatin administration & dosage, Combined Modality Therapy, Epirubicin administration & dosage, Female, Genetic Therapy, Humans, Liver Neoplasms genetics, Liver Neoplasms pathology, Liver Neoplasms secondary, Middle Aged, Progression-Free Survival, Recombinant Proteins genetics, Sarcoma genetics, Sarcoma pathology, Tumor Suppressor Protein p53 genetics, Uterine Neoplasms genetics, Uterine Neoplasms pathology, Liver Neoplasms therapy, Recombinant Proteins therapeutic use, Sarcoma therapy, Tumor Suppressor Protein p53 therapeutic use, Uterine Neoplasms therapy
- Abstract
This study evaluated the efficacy of rAd-p53 (Gendicine
® ) followed by chemotherapy for the treatment of uterine sarcoma. Twelve cases of uterine sarcoma treated at Shengjing Hospital were retrospectively analyzed. Among the 12 patients, one had primary cancer, and 11 had recurrent cancer. For the recurrent cases, the interval between the first operation and diagnosis of recurrence, or progression-free survival time 1 (PFS1), was 1-18 months (median 3 months). All patients were treated with local application of rAd-p53 followed by chemotherapy (local injection of bleomycin and i.v. infusion of cisplatin, epirubicin, and isocyclophosphamide). Efficacy was evaluated, and the rates of complete remission (CR) and partial remission (PR) were calculated. During follow-up, PFS time 2 (PFS2) after the baseline period and overall survival (OS) time after the baseline period of rAd-p53 treatment data were obtained. The treatment resulted in one CR, seven PR, three with stable disease (SD), and one with progressive disease (PD). The remission rate (CR + PR) was 66.7%, and the responsive (CR + PR + SD) rate was 91.7%. PFS2 ranged from 2 to 62 months, with a median of 13 months, which is 10 months longer than that of PFS1; this difference was statistically significant (p = 0.0038). The OS time ranged from 6 to 62 months, with a median of 24 months. Following the combined treatment, four of the patients underwent a second debulking surgery. Of the two patients with liver metastases, one had CR of liver foci, and one had PR. Up to the follow-up date of the two patients who survived, one was tumor-free for 60 months. The PFS2 for the other patient was 39 months. This patient survived with tumor for 53 months with slow disease progression. The remaining 10 patients died. Local application of rAd-p53 combined with local injection of bleomycin and intravenous infusion of cisplatin, epirubicin and isocyclophosphamide was effective for treatment of uterine sarcoma, especially for patients with liver metastases. For patients with uterine sarcoma who do not have the opportunity for surgery, this regimen can be used as a new adjuvant therapy to obtain a surgical opportunity that allows further debulking of the tumor mass.- Published
- 2018
- Full Text
- View/download PDF
25. Berberine and cinnamaldehyde together prevent lung carcinogenesis.
- Author
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Meng M, Geng S, Du Z, Yao J, Zheng Y, Li Z, Zhang Z, Li J, Duan Y, and Du G
- Abstract
Starving tumor cells by restricting nutrient sources is a promising strategy for combating cancer. Because both berberine and cinnamaldehyde can activate AMP-activated protein kinase (AMPK, a sensor of cellular energy status), we investigated whether the combination of berberine and cinnamaldehyde could synergistically prevent lung carcinogenesis through tumor cell starvation. Urethane treatment induced lung carcinogenesis in mice, downregulated AMPK and mammalian target of rapamycin (mTOR) while upregulating aquaporin-1 (AQP-1) and nuclear factor kappa B (NF-κB). Together, berberine and cinnamaldehyde reduced mouse susceptibility to urethane-induced lung carcinogenesis, and reversed the urethane-induced AMPK, mTOR, AQP-1, and NF-κB expression patterns. In vitro , berberine and cinnamaldehyde together induced A549 cell apoptosis, prevented cell proliferation, autophagy, and wound healing, upregulated AMPK, and downregulated AQP-1. The effects of the combined treatment were reduced by rapamycin (a mTOR inhibitor) or HgCL
2 (an AQP inhibitor), but not Z-VAD-FMK (a caspase inhibitor). The berberine/cinnamaldehyde combination also prevented A549 cell substance permeability and decreased intracellular ATP concentrations. These results suggest the combination of berberine and cinnamaldehyde limited both primary and adaptive nutrient acquisition by lung tumors via AMPK-reduced AQP-1 expression, which ultimately starved the tumor cells., Competing Interests: CONFLICTS OF INTEREST The authors declare that they have no conflicts of interest.- Published
- 2017
- Full Text
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26. The relationship between ovarian function and ovarian limited dose in radiotherapy postoperation of ovarian transposition in young patients with cervical cancer.
- Author
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Du Z and Qu H
- Subjects
- Adult, Female, Follow-Up Studies, Humans, Hysterectomy, Male, Organs at Risk physiology, Ovary metabolism, Ovary radiation effects, ROC Curve, Radiotherapy Dosage, Radiotherapy, Adjuvant adverse effects, Radiotherapy, Intensity-Modulated adverse effects, Uterine Cervical Neoplasms metabolism, Uterine Cervical Neoplasms surgery, Follicle Stimulating Hormone metabolism, Luteinizing Hormone metabolism, Ovary physiology, Uterine Cervical Neoplasms radiotherapy
- Abstract
In this study, the relationship between ovarian function and ovarian limited dose in radiotherapy was evaluated in young patients with cervical cancer who underwent ovarian transposition (Fig1B). Moreover, the novel ovarian dose limit for a better preservation of ovarian function in intensity-modulated radiation therapy (IMRT) was determined. We retrospectively analyzed data from 86 patients with cervical cancer who received radical hysterectomy and ovarian transposition from January 2013 to June 2015. In agreement with the National Comprehensive Cancer Network Guidelines (NCCN) for Cervical Cancer Version 2.2015, 65 patients with pathological high-risk factors were administered adjuvant radiotherapy-20 of them received three-dimensional conformal radiotherapy (Observation Group A), 24 patients received IMRT with no limitation on radiation dose to ovaries (Observation Group B), and 21 patients underwent IMRT with limited radiation dose(V
10 <20%) to ovaries (Observation Group C). Twenty-one patients without any predetermined high-risk factors did not received radiation therapy (Control Group D). Patients from all four groups were followed up, and sex hormone levels (E2 , P, follicle-stimulating hormone [FSH], LH) before radiation, postradiation, 3 month, and 6 month after the radiation therapy were measured by electrochemiluminescence immunoassay. Subsequently, changes in sex hormone levels in all four groups of patients at various time points were analyzed. The levels of sexual hormones (E2 , P, FSH, LH) before radiation, postradiation, 3 month, and 6 month after the radiation therapy in patients from all three observation groups were significantly lower than those in patients of the control group (P < 0.05). There was no statistically significant difference in the levels of sex hormones in patients of the control group at different time points (P > 0.05). Within each observation group, there was a statistically significant difference in the sex hormone levels in patients before the radiation and after the radiation (P < 0.05); however, when data from all three observation groups were compared, only the difference in the levels of FSH and LH between the patients from Group A and Group C was statistically significant (P < 0.05). The results of receiver-operating characteristic (ROC) curve analysis suggested that limiting ovarian radiation dose to V7.5 < 26% in IMRT prevents the disruption of ovarian function (area under ROC curve was 0.740, confidence interval [CI] = 0.606-0.874). In young patients with cervical cancer who underwent radical hysterectomy and ovarian transposition without receiving adjuvant radiotherapy, ovarian endocrine function was well preserved. In patients who received any type of postoperative radiotherapy, ovarian function was affected, suggesting that the standard ovarian limited dose used in IMRT disrupted ovarian function. The results of the ROC curve analysis suggested that the new optimal dose limit of V7.5 < 26% should be used in IMRT to preserve ovarian function (P = 0.003)., (© 2017 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)- Published
- 2017
- Full Text
- View/download PDF
27. Demethoxycurcumin inhibited human epithelia ovarian cancer cells' growth via up-regulating miR-551a.
- Author
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Du Z and Sha X
- Subjects
- Adult, Apoptosis genetics, Binding Sites genetics, Carcinoma, Ovarian Epithelial, Cell Line, Tumor, Cell Proliferation genetics, Curcumin pharmacology, Diarylheptanoids, Female, Gene Expression Regulation, Neoplastic, HEK293 Cells, Humans, Insulin Receptor Substrate Proteins metabolism, MicroRNAs genetics, Middle Aged, Neoplasms, Glandular and Epithelial drug therapy, Ovarian Neoplasms drug therapy, Phosphatidylinositol 3-Kinases metabolism, Proto-Oncogene Proteins c-akt metabolism, Apoptosis drug effects, Cell Proliferation drug effects, Curcumin analogs & derivatives, Insulin Receptor Substrate Proteins antagonists & inhibitors, MicroRNAs biosynthesis, Neoplasms, Glandular and Epithelial pathology, Ovarian Neoplasms pathology
- Abstract
Curcumin is a natural agent that has ability to dampen tumor cells' growth. However, the natural form of curcumin is prone to degrade and unstable in vitro. Here, we demonstrated that demethoxycurcumin (a curcumin-related demethoxy compound) could inhibit cell proliferation and induce apoptosis of ovarian cancer cells. Moreover, IRS2/PI3K/Akt axis was inactivated in cells treated with demethoxycurcumin. Quantitative real-time reverse transcription polymerase chain reaction demonstrated that miR-551a was down-regulated in ovarian cancer tissues and ovarian cancer cell lines. Over-expression of miR-551a inhibited cell proliferation and induced apoptosis of ovarian cancer cells, whereas down-regulation of miR-551a exerted the opposite function. Luciferase assays confirmed that there was a binding site of miR-551a in IRS2, and we found that miR-551a exerted tumor-suppressive function by targeting IRS2 in ovarian cancer cells. Remarkably, miR-551a was up-regulated in the cells treated with demethoxycurcumin, and demethoxycurcumin suppressed IRS2 by restoration of miR-551a. In conclusion, demethoxycurcumin hindered ovarian cancer cells' malignant progress via up-regulating miR-551a.
- Published
- 2017
- Full Text
- View/download PDF
28. The optimal dose of arsenic trioxide induced opposite efficacy in autophagy between K562 cells and their initiating cells to eradicate human myelogenous leukemia.
- Author
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Guo Z, Meng M, Geng S, Du Z, Zheng Y, Yao J, Li Z, Han G, Lin H, and Du G
- Subjects
- Adenosine Triphosphate metabolism, Animals, Antineoplastic Agents pharmacology, Antineoplastic Agents therapeutic use, Apoptosis drug effects, Arsenic Trioxide, Arsenicals pharmacology, Arsenicals therapeutic use, Autophagy drug effects, Cell Differentiation drug effects, Cell Proliferation drug effects, Cellular Senescence drug effects, Female, Humans, K562 Cells, Leukemia, Myeloid pathology, Mice, Mice, Inbred BALB C, Mice, Nude, Oxides pharmacology, Oxides therapeutic use, Reactive Oxygen Species metabolism, Tumor Burden drug effects, Antineoplastic Agents administration & dosage, Arsenicals administration & dosage, Leukemia, Myeloid drug therapy, Oxides administration & dosage
- Abstract
Ethnopharmacological Relevance: Arsenic trioxide (As2O3), a main component of arsenolite which is a common traditional Chinese medicine (TCM) wildly used as a therapeutic agent for more than 2400 years in china, has been accepted as a standard treatment for the patients with acute promyelocytic leukemia (APL) based on the principle in TCM of "using a poison to fight against other poisons or malignancy illnesses". However, it remains unknown that which mechanism is actually responsible for the therapeutic effects against these blood malignancies., Aim of the Study: The purpose of this study was to explore the actual mechanism that ATO exerts its effects in K562 cells and their initiating cells (K562s)., Materials and Methods: K562s cells were separated and enriched for CD34+/CD38- cells using magnetic microbeads. Cell proliferation was determined by incorporation of BrdU. Cell apoptosis was evaluated by Annexin-V binding and PI uptake. Autophagy was estimated by acridine orange and immunofluorescence staining of LC3-B and p62. MC colonic formation was used to examine cell self-renew. ROS generation inside living cells was measured by DCFH-DA. Cell differentiation was assessed by the benzidine staining. The SA-β-gal assay was used to detect cell senescence. Protein expression was examined by western blotting and immunohistochemical staining., Results: K562s cells were stronger in self-renew and resistance to ATO cytotoxicity and starvation-induced apoptosis than K562 cells. Unexpectedly, we found that ATO at a dose of 0.5μM which had no effect on cell proliferation resulted in maximum suppression on self-renew in both cells and maximum starvation-induced apoptosis in K562s cells but minimum starvation-induced apoptosis in K562 cells. Next, we found that ATO no more than 0.5μM selectively induced K562s cell differentiation indicated by benzidine staining, γ-globin and CD235a expression. More importantly, we found that ATO no more than 0.5μM led to opposite efficacy in autophagy between K562 and K562s cells, and the opposite autophagy could induced late-phase senescence in both cells. Finally, we used the optimal dose of ATO to eradicate leukemia cells and obtained a satisfied therapeutic outcomes in vivo., Conclusions: Our results suggest that the used dose of ATO may determine the fate of cell differentiation senescence or malignant transformation, and the optimal dose of ATO induced opposite efficacy in autophagy between K562 cells and their initiating cells and ultimately leads both cells to late-phase senescence., (Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
29. Oral kanglaite injection (KLTI) attenuates the lung cancer-promoting effect of high-fat diet (HFD)-induced obesity.
- Author
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Cao N, Ma X, Guo Z, Zheng Y, Geng S, Meng M, Du Z, Lin H, Duan Y, and Du G
- Subjects
- 3T3 Cells, 3T3-L1 Cells, Adipocytes cytology, Administration, Oral, Animals, Apoptosis, Cell Line, Tumor, Cell Proliferation, Disease Models, Animal, Disease Progression, Epithelial-Mesenchymal Transition, Female, Glucose Tolerance Test, Human Umbilical Vein Endothelial Cells, Humans, Lung Neoplasms complications, Mice, Mice, Inbred C57BL, Neoplasm Transplantation, Overweight, Oxidative Stress, Risk Factors, Signal Transduction, Diet, High-Fat adverse effects, Drugs, Chinese Herbal administration & dosage, Lung Neoplasms drug therapy, Obesity complications
- Abstract
Obesity is a risk factor for cancer and cancer-related mortality, however, its role in lung cancer progression remains controversial. This study aimed to assess whether high-fat diet (HFD)-induced obesity promotes lung cancer progression and whether the promotion can be decreased by Kanglaite injection (KLTI). In vivo, HFD-induced overweight or obesity increases the lung carcinoma incidence and multiplicity in a urethane-induced lung carcinogenic model and cancer-related mortality in a LLC allograft model by increasing oxidative stress and cellular signaling molecules including JAK, STAT3, Akt, mTOR, NF-κB and cyclin D1. These changes resulted in increases in vascular disruption and the lung water content, thereby promoting lung epithelial proliferation and the epithelial-mesenchymal transition (EMT) during carcinogenesis. Chronic KLTI treatment substantially prevented the weight gain resulting from HFD consumption, thereby reversing the metabolic dysfunction-related physiological changes and reducing susceptibility to lung carcinogenesis. In vitro, KLTI significantly suppressed the proliferation and induced apoptosis and differentiation in 3T3-L1 preadipocyte cells and attenuated endothelial cell permeability in HUVECs. Our study indicates that there is a potential relationship between obesity and lung cancer. This is the first study to show that obesity can directly accelerate carcinogen-induced lung cancer progression and that KLTI can decrease the lung cancer-promoting effect of HFD-induced obesity., Competing Interests: The authors have declared that there are no conflicts of interest.
- Published
- 2016
- Full Text
- View/download PDF
30. Gingerol Reverses the Cancer-Promoting Effect of Capsaicin by Increased TRPV1 Level in a Urethane-Induced Lung Carcinogenic Model.
- Author
-
Geng S, Zheng Y, Meng M, Guo Z, Cao N, Ma X, Du Z, Li J, Duan Y, and Du G
- Subjects
- Animals, Capsaicin administration & dosage, Carcinogenesis drug effects, Carcinogenesis genetics, Carcinogenesis metabolism, Disease Models, Animal, ErbB Receptors genetics, ErbB Receptors metabolism, Female, Humans, Lung Neoplasms etiology, Lung Neoplasms genetics, Lung Neoplasms metabolism, Mice, Mice, Inbred ICR, NF-kappa B genetics, NF-kappa B metabolism, TRPV Cation Channels genetics, Capsaicin adverse effects, Catechols administration & dosage, Fatty Alcohols administration & dosage, TRPV Cation Channels metabolism, Urethane toxicity
- Abstract
Both gingerol and capsaicin are agonists of TRPV1, which can negatively control tumor progression. This study observed the long-term effects of oral administration of 6-gingerol alone or in combination with capsaicin for 20 weeks in a urethane-induced lung carcinogenic model. We showed that lung carcinoma incidence and multiplicity were 70% and 21.2 ± 3.6, respectively, in the control versus 100% and 35.6 ± 5.2 in the capsaicin group (P < 0.01) and 50% and 10.8 ± 3.1 in the 6-gingerol group (P < 0.01). The combination of 6-gingerol and capsaicin reversed the cancer-promoting effect of capsaicin (carcinoma incidence of 100% versus 20% and multiplicity of 35.6 ± 5.2 versus 4.7 ± 2.3; P < 0.001). The cancer-promoting effect of capsaicin was due to increased epidermal growth-factor receptor (EGFR) level by decreased transient receptor potential vanilloid type-1 (TRPV1) level (P < 0.01) . The capsaicin-decreased EGFR level subsequently reduced levels of nuclear factor-κB (NF-κB) and cyclin D1 that favored enhanced lung epithelial proliferation and epithelial-mesenchymal transition (EMT) during lung carcinogenesis (P < 0.01). In contrast, 6-gingerol promoted TRPV1 level and drastically decreased the levels of EGFR, NF-κB, and cyclin D1 that favored reduced lung epithelial proliferation and EMT (P < 0.01). This study provides valuable information for the long-term consumption of chili-pepper-rich diets to decrease the risk of cancer development.
- Published
- 2016
- Full Text
- View/download PDF
31. USF-1 inhibition protects against oxygen-and-glucose-deprivation-induced apoptosis via the downregulation of miR-132 in HepG2 cells.
- Author
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Wang R, Liang H, Li H, Dou H, Zhang M, Baobuhe, Du Z, Gao M, and Wang R
- Subjects
- Down-Regulation, Hep G2 Cells, Humans, Promoter Regions, Genetic, RNA, Small Interfering genetics, Apoptosis, Glucose metabolism, MicroRNAs genetics, Oxygen metabolism, RNA Interference, Upstream Stimulatory Factors genetics
- Abstract
Upstream stimulatory factor 1 (USF-1) is an important transcription factor that participates in glucose metabolism and tumorigenesis. The aim of the current study was to explore the regulatory mechanism of USF-1 in HepG2 cells exposed to oxygen and glucose deprivation (OGD). After the establishment of the OGD model in HepG2 cells, we determined that the cells treated with OGD exhibited a high apoptotic rate and that the introduction of siRNA against USF-1 protected the cells from OGD-induced apoptosis. The miRNA microarray results demonstrated that a set of miRNAs were deregulated in the cells transfected with USF-1 siRNA, and the set of downregulated miRNAs included a novel miRNA, miR-132. Further analyses indicated that miR-132 overexpression inhibits the protective roles of USF-1 siRNA in OGD-induced apoptosis. We also identified several binding sites for USF-1 in the miR-132 promoter. The silencing of USF-1 resulted in a reduction in miR-132 expression, and USF-1 overexpression increased the expression of this miRNA. Our study indicated that the silencing of USF-1 plays protective roles in OGD-induced apoptosis through the downregulation of miR-132, which indicates that the silencing of USF-1 may be a therapeutic strategy for the promotion of cancer cell survival under OGD conditions., (Copyright © 2014 Elsevier Inc. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
32. [Application of liquid chromatography-mass spectrometry in the study of metabolic profiling of cirrhosis in different grades].
- Author
-
Du Z, Zhang L, and Liu S
- Subjects
- Adult, Biomarkers blood, Case-Control Studies, Cysteine blood, Female, Glycine blood, Humans, Liver Cirrhosis blood, Liver Cirrhosis virology, Lysophosphatidylcholines blood, Male, Middle Aged, Chromatography, High Pressure Liquid methods, Hepatitis B metabolism, Liver Cirrhosis metabolism, Mass Spectrometry methods, Metabolomics methods
- Abstract
The metabolic profiles were obtained by high performance liquid chromatography combined with a LTQ Orbitrap XL mass spectrometer (HPLC-LTQ Orbitrap XL MS) platform to analyze serum specimens from the people of healthy control group and patients of hepatitis B virus (HBV)-induced cirrhosis. Then the data were analyzed with the pattern recognition methods and nonparametric test. The orthogonal partial least squares-discriminant analysis (OPLS-DA) mode (R2(Y) = 90.1%, Q2 = 66.7%) was constructed by the serum metabolic profiles of Child-Pugh grades A, B, C groups and a healthy control group in the training set and the good discrimination ability of this mode for the testing set was demonstrated with the accuracy of 93.8%. The corresponding specific metabolic biomarkers used to distinguish different cirrhosis grades were discovered, such as lysophosphatidylcholine (LPC), glycolchenodeoxycholic acid (GCDCA), cysteine, glycine, aminoadipic acid, pipecolic acid. The results suggest that the metabolic profiling of serum can be used to construct the discrimination mode and discover the metabolic biomarkers for the HBV-induced cirrhosis, which will support the diagnosis and evaluation of the HBV-induced cirrhosis.
- Published
- 2011
- Full Text
- View/download PDF
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