24 results on '"Lan, Shi"'
Search Results
2. Urine-derived mesenchymal stem cells-derived exosomes enhances survival and proliferation of aging retinal ganglion cells
- Author
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Qi-Qin Dan, Li Chen, Lan-Lan shi, Xiu Zhou, Ting-Hua Wang, and Hua Liu
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Cell Biology ,Molecular Biology - Abstract
Objectives This study was designed to investigate to test the effect of exosomes from urine-derived mesenchymal stem cells (USCs) on the survival and viability of aging retinal ganglion cells (RGCs), and explored the preliminary related mechanisms. Methods Primary USCs were cultured and identified by immunofluorescence staining. Aging RGCs models were established by D-galactose treatment and identified by β-Galactosidase staining. After treatment with USCs conditioned medium (with USCs removal), flow cytometry was performed to examine the apoptosis and cell cycle of RGCs. Cell viability of RGCs was detected by Cell-counting Kit 8 (CCK8) assay. Moreover, gene sequencing and bioinformatics analysis were applied to analyze the genetic variation after medium treatment in RGCs along with the biological functions of differentially expressed genes (DEGs). Results The number of apoptotic aging RGCs was significantly reduced in USCs medium-treated RGCs. Besides, USCs-derived exosomes exert significant promotion on the cell viability and proliferation of aging RGCs. Further, sequencing data analyzed and identified DEGs expressed in aging RGCs and aging RGCs treated with USCs conditioned medium. The sequencing outcomes demonstrated 117 upregulated genes and 186 downregulated genes in normal RGCs group vs aging RGCs group, 137 upregulated ones and 517 downregulated ones in aging RGCs group vs aging RGCs + USCs medium group. These DEGs involves in numerous positive molecular activities to promote the recovery of RGCs function. Conclusions Collectively, the therapeutic potentials of USCs-derived exosomes include suppression on cell apoptosis, enhancement on cell viability and proliferation of aging RGCs. The underlying mechanism involves multiple genetic variation and changes of transduction signaling pathways.
- Published
- 2023
3. Interfacial Design of Graphene Nanoplate Reinforced Copper Matrix Composites for High Mechanical Performance
- Author
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Lan Shi, Mabao Liu, Wei Zhang, Weijia Ren, Shiqi Zhou, Qihang Zhou, Yanjie Yang, and Zijun Ren
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General Engineering ,General Materials Science - Published
- 2022
4. Synthesis of MoS2/CoSe2-x hybrids as electrocatalysts for hydrogen evolution reaction
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Lan Shi, Chuanqi Feng, Huimin Wu, and Yu Ding
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Tafel equation ,Materials science ,General Chemical Engineering ,General Engineering ,General Physics and Astronomy ,Overpotential ,Kinetic energy ,Electrochemistry ,Energy storage ,Catalysis ,Chemical engineering ,Water splitting ,General Materials Science ,Current density - Abstract
For the first time, novel electrocatalysts MoS2/CoSe2-x (x are the weight ratio of MoS2/CoSe2, x = 15%, 25%, 35%) have been synthesized by solvothermal method, which are facile, low-cost, and easy to realize scalable production. While the results of electrochemical testings show that composition can improve the properties, the ratio of hybrids can effect the catalytic performances. And when the x is 25% (MoS2/CoSe2-25), the hybrid shows the best catalytic performances towards hydrogen evolution reaction (HER), with a low overpotential of 113 mV at 10 mA/cm2, the smaller Tafel slope (45 mV/dec), and kinetic resistance (23 Ω), and the current density can be maintained for at least 24 h. Thus, MoS2/CoSe2-25 shows potential application in water splitting.
- Published
- 2021
5. Synthesis of 3,4-dihydropyrimidin-2(1H)-ones catalyzed by poly(ferric 2-acrylamido-2-methylpropanesulfonate)
- Author
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Zhihao Zhao, Hongguang Dai, and Lan Shi
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chemistry.chemical_classification ,General Chemical Engineering ,Biginelli reaction ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Heterogeneous catalysis ,01 natural sciences ,Biochemistry ,Aldehyde ,Industrial and Manufacturing Engineering ,0104 chemical sciences ,Catalysis ,chemistry.chemical_compound ,Sulfonate ,chemistry ,Ethyl acetoacetate ,Materials Chemistry ,medicine ,Ferric ,0210 nano-technology ,Ion-exchange resin ,medicine.drug ,Nuclear chemistry - Abstract
Poly(ferric 2-acrylamido-2-methylpropanesulfonate) (PFAMPS) was prepared via the reaction of poly(2-acrylamido-2-methylpropanesulfonic acid) and Fe(OH)3. PFAMPS was used as a heterogeneous catalyst for the Biginelli reaction of aldehyde, ethyl acetoacetate, and urea to synthesize 3,4-dihydropyrimidin-2(1H)-ones with yields of 70–87%. PFAMPS can be recycled six times without significant loss in catalytic activity. For comparison, ferric lignosulfonate (FLSA), ferric cellulose sulfonate (FCSA), ferric starch sulfonate (FSSA), and ferric 732 cation exchange resin (FACER) were used as catalysts of the Biginelli reaction. It was shown that the catalytic activities of recycled FLSA, FCSA, FSSA, and FACER significantly decreased after two reactions. Fe3+ in the polymer sulfonates acted as the catalyst for the Biginelli reaction. PFAMPS was the chelate, where the action between Fe3+ and the poly(2-acrylamido-2-methylpropanesulfonate) matrix was strong, and Fe3+ lost little from the PFAMPS. However, significant Fe3+ loss was observed in the FLSA, FCSA, FSSA and FACER polymer matrices after reuse.
- Published
- 2020
6. Evolution of diagenetic fluid of ultra-deep Cretaceous Bashijiqike Formation in Kuqa depression
- Author
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Hongming Tang, Jijia Liao, Li Ling, Feng Wei, Feng Zhao, Bai-long Qi, Lan Shi, Xi Wang, Liehui Zhang, and Haoxuan Tang
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Anhydrite ,Chemistry ,020209 energy ,Dolomite ,Metals and Alloys ,General Engineering ,Geochemistry ,02 engineering and technology ,010502 geochemistry & geophysics ,01 natural sciences ,Isotopes of oxygen ,Methane ,Diagenesis ,Petrography ,chemistry.chemical_compound ,Isotopes of carbon ,0202 electrical engineering, electronic engineering, information engineering ,Carbonate ,0105 earth and related environmental sciences - Abstract
Diagenetic fluid types of the Cretaceous Bashijiqike formation are restored based on the analysis of petrographic, electron microprobe composition, inclusions homogenization temperature, salinity and vapor composition and laser carbon and oxygen isotope of diagenetic mineral, and regional geological background. Diagenetic fluid evolution sequence is analyzed on this basis. The crystalline dolomite cement has a low concerntration of Sr, high concerntration of Mn and higher carbon isotope, showing that the crystalline dolomite is affected by meteoric fresh water, associated with the tectonic uplift of late Cretaceous. Similar δ13CPDB, negative transfer of δ18OPDB and the differentiation of the concerntration of Fe and Mn indicate that the diagenetic fluid of the vein dolomite cement is homologous with the diagenetic fluid of the crystalline dolomite cement, temperature and depth are the dominant factors of differential precipitation between these two carbonate cements. Anhydrite cements have high concerntration of Na, extremely low concerntration of Fe and Mn contents. Based on these data, anhydrite cements can be thought to be related to the alkaline fluid overlying gypsum-salt layer produced by dehydration. The barite vein has abnormally high concerntration of Sr, ultra-high homogenization temperature and high-density gas hydrocarbon inclusions, which is speculated to be the forward fluid by intrusion of late natural gas. Coexistence of methane inclusions with CO2 gas proves existence of acid water during the accumulation of natural gas in the late stages. Therefore, the alkaline environment and associated diagenesis between the meteoric fresh water in epidiagentic stage and carbonic acid in the late diagenesis have dominated the process of diagenesis and reservoir, the secondary porosity and fracture zone formed by gas accumulation is a favorable play for the exploration of ultra-deep reservoirs.
- Published
- 2018
7. Analysis of the lithospheric magnetic anomalies and tectonics in continental China and the adjacent regions using CHAMP satellite data
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Chunhua Bai, Jing Hou, Yingyan Wu, Lan Shi, Guofa Kang, Guoming Gao, and Limin Wen
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geography ,Plateau ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Anomaly (natural sciences) ,010502 geochemistry & geophysics ,01 natural sciences ,Magnetic field ,Paleontology ,Tectonics ,Geophysics ,Amplitude ,Geochemistry and Petrology ,Lithosphere ,Magnetic anomaly ,Structural geology ,Geology ,0105 earth and related environmental sciences - Abstract
In this paper, the CHAMP satellite data from the last decade are used to map the lithospheric magnetic field in continental China at altitudes of 300 and 400 km using the spline function model technique. The results show that our model has higher amplitude than the spherical harmonic magnetic field model MF7. The resulting lithospheric anomaly distribution of continental China agrees with the geotectonic structure and crustal thermal structure. The magnetic anomaly distribution clearly indicates extrusion of the Tibetan Plateau towards the northeast and northwest directions. Northward movement is impeded by the relative rigid Tarim Basin featured with positive magnetic anomalies. The positive magnetic anomalies in Tarim basin extend to the northern Tibetan Plateau, suggesting that the southern part of Tarim Basin underthrusted the northern Tibetan Plateau.
- Published
- 2017
8. Pituitary adenoma with posterior area invasion of cavernous sinus: surgical anatomy, approach, and outcomes
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Wu, Xiao, primary, Xie, Shen Hao, additional, Tang, Bin, additional, Yang, You Qing, additional, Yang, Le, additional, Ding, Han, additional, Bao, You Yuan, additional, Lan, Shi Hai, additional, Zhou, Lin, additional, and Hong, Tao, additional
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- 2020
- Full Text
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9. Anatomical study of a surgical approach through the neck to the jugular foramen under endoscopy
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Lai, Peng Fei, primary, Wu, Xiao, additional, Lan, Shi Hai, additional, Tang, Bin, additional, Huang, Hui Yan, additional, and Hong, Tao, additional
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- 2020
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10. Degradation enhancement of rice straw by co-culture of Phanerochaete chrysosporium and Trichoderma viride
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Chen, Kai-Jian, primary, Tang, Ji-Chao, additional, Xu, Bao-Hong, additional, Lan, Shi-Le, additional, and Cao, Yankun, additional
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- 2019
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11. A flexible mixed-signal image processing pipeline using 3D chip stacks
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Lan Shi, Robert Weigel, Juergen Seiler, Benjamin Pfundt, Christopher Soell, Marc Reichenbach, Thomas Ussmueller, and Andreas Baenisch
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Computer science ,020208 electrical & electronic engineering ,010401 analytical chemistry ,Real-time computing ,Image processing ,Mixed-signal integrated circuit ,02 engineering and technology ,Analog image processing ,Filter (signal processing) ,Analog signal processing ,01 natural sciences ,0104 chemical sciences ,Digital image processing ,0202 electrical engineering, electronic engineering, information engineering ,Smart camera ,Image sensor ,Information Systems - Abstract
This work presents a highly flexible mixed-signal CMOS image sensor suitable for smart camera applications. These systems need to fit different constraints regarding power consumption, speed and quality, and the optimal compromise may differ depending on the application. Moreover, the best implementation of a desired image processing task may be in the analog or the digital domain, or even a combined computation. Different aspects starting from the image sensor and signal acquisition up to the pre-processing in analog and digital domain are investigated in this paper to optimize not just one part of the system, but the whole system altogether. Moreover, it is shown that analog processing algorithms can improve signal quality, processing speed and latency while being able to save power, which is important for real-time systems. In order to be able to carry out spatial operations, the state-of-the-art sensor is modified to be able to read out multiple pixels at the same time. This allows analog spatial filter operations which consume significantly less power. As an example, an averaging filter is described which needs less than 5.3 % of the power–time product of a digital implementation for one computation. To enhance data throughput and flexibility, 3D chip stacking is proposed to partition the sensor in smaller units and enable massively parallel processing.
- Published
- 2016
12. Random Conformal Welding for Finitely Connected Regions
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Lan, Shi-Yi, primary and Zhou, Wang, additional
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- 2018
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13. Investigation of the hazardous substance causing crayfish-induced rhabdomyolysis via a mouse model, a hemolysis assay, and a cytotoxicity assay
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Qiu‑Feng Cai, Guang-Ming Liu, Chen Xiaofeng, Tzu-Ming Pan, Chao‑Lan Shi, Jiang‑Wei Lin, and Min‑Jie Cao
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Procambarus clarkii ,biology ,Chemistry ,Anatomy ,Aquatic Science ,Pharmacology ,medicine.disease ,Crayfish ,biology.organism_classification ,Ouabain ,Hemolysis ,Hazardous substance ,chemistry.chemical_compound ,Palytoxin ,medicine ,Cytotoxicity ,Rhabdomyolysis ,medicine.drug - Abstract
The hazardous substance from Procambarus clarkii could cause rhabdomyolysis. Mice were administered mashed muscles and gills, intestines, and glands (GIG) obtained from cooked crayfish by gavage . Three of seventy-two mice administered with GIG (with an incidence rate of 4.17 %) appeared to have rhabdomyolysis symptoms with the serum creatine kinase (CK) content increased by more than 5 times, as well as the pathological changes in livers, spleens, kidneys, and skeletal muscles. Furthermore, the cytotoxicity and hemolysis analysis of the palytoxin revealed that the methanol/water extracts from GIG of crayfish were not inhibited by ouabain effectively, which pointed out the hazardous substance causing rhabdomyolysis was not allergen or palytoxin. These research results could be valuable in further comprehensive experiments and lay a foundation for basic rhabdomyolysis research.
- Published
- 2015
14. The Impact of Reversing Regulatory Arbitrage on Loan Originations: Evidence from Bank Holding Companies
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David H. Downs and Lan Shi
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Economics and Econometrics ,business.industry ,Subsidiary ,Loan origination ,Financial system ,Mortgage insurance ,Shared appreciation mortgage ,Urban Studies ,Loan ,Accounting ,Mortgage underwriting ,Business ,Arbitrage ,Finance ,Financial services - Abstract
Mortgage banking subsidiaries of bank holding companies (BHCs) became increasingly active players in the mortgage origination market during the last decade. At the time, the Federal Reserve Board (FRB) had supervisory power over BHCs, and under the Bank Holding Company Act was authorized to monitor and examine the subsidiaries of BHCs under certain circumstances. However, this authority did not clearly extend to routine examinations of nonbank subsidiaries of BHCs. This changed between 2007 and 2009 due to FRB policy on consumer compliance supervision for nonbank subsidiaries of BHCs. Our empirical analysis tests for the impact of the new policy on the quantity and quality of loan originations by mortgage banking subsidiaries of BHCs. We use a difference-in-differences estimator with the control group being other types of lenders. We show that loan production moved from mortgage banking subsidiaries to their affiliated depository institutions after the policy change. The quality of loans originated by mortgage banking subsidiaries of BHCs increased after the policy change: The denial rates for mortgage applications increased, loan-to-income ratios decreased, and the proportion of owner occupied houses increased in mortgage banking subsidiaries more than they did in other types of lenders.
- Published
- 2014
15. Using Petrel II Glider to Analyze Underwater Noise Spectrogram in the South China Sea
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Liu, Lu, primary, Xiao, Ling, additional, Lan, Shi-Quan, additional, Liu, Ting-Ting, additional, and Song, Guo-Li, additional
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- 2018
- Full Text
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16. SIRT7 is a histone desuccinylase that functionally links to chromatin compaction and genome stability
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Wanjin Li, Di Zhang, Yongfeng Shang, Lei Li, Wenhua Yu, Lan Shi, Shangda Yang, Lin He, Zhongyi Cheng, Luyang Sun, Xia Yi, Jianguo Yang, Jing Liang, Lei Shi, and Ruorong Yan
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0301 basic medicine ,DNA Repair ,Cell Survival ,Science ,General Physics and Astronomy ,Article ,Genomic Instability ,General Biochemistry, Genetics and Molecular Biology ,Chromatin remodeling ,Cell Line ,Histones ,03 medical and health sciences ,Histone H1 ,Histone H2A ,Humans ,Sirtuins ,Histone code ,Histone octamer ,Multidisciplinary ,biology ,Lysine ,Succinates ,General Chemistry ,Chromatin ,030104 developmental biology ,Biochemistry ,Histone methyltransferase ,Sirtuin ,Biocatalysis ,biology.protein ,Poly(ADP-ribose) Polymerases ,DNA Damage - Abstract
Although SIRT7 is a member of sirtuin family proteins that are described as NAD+-dependent class III histone deacetylases, the intrinsic enzymatic activity of this sirtuin protein remains to be investigated and the cellular function of SIRT7 remains to be explored. Here we report that SIRT7 is an NAD+-dependent histone desuccinylase. We show that SIRT7 is recruited to DNA double-strand breaks (DSBs) in a PARP1-dependent manner and catalyses desuccinylation of H3K122 therein, thereby promoting chromatin condensation and DSB repair. We demonstrate that depletion of SIRT7 impairs chromatin compaction during DNA-damage response and sensitizes cells to genotoxic stresses. Our study indicates SIRT7 is a histone desuccinylase, providing a molecular basis for the understanding of epigenetic regulation by this sirtuin protein. Our experiments reveal that SIRT7-catalysed H3K122 desuccinylation is critically implemented in DNA-damage response and cell survival, providing a mechanistic insight into the cellular function of SIRT7., SIRT7 is a member of sirtuin family proteins that are described as NAD+-dependent class III histone deacetylases. Here, the authors show that SIRT7 is histone desuccinylase catalysing H3K122 desuccinylation, thereby promoting chromatin condensation and repair of DNA double strand breaks.
- Published
- 2016
17. Expression of PC-cell-derived growth factor in breast cancer
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Lan Shi, Haiping Song, Chunping Liu, and Tao Huang
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Oncology ,CA15-3 ,medicine.medical_specialty ,business.industry ,Growth factor ,medicine.medical_treatment ,Estrogen receptor ,General Medicine ,medicine.disease ,Breast cancer ,Internal medicine ,Progesterone receptor ,medicine ,Immunohistochemistry ,skin and connective tissue diseases ,business ,Adenofibroma ,Pathological - Abstract
This study is mainly aimed at evaluating the expression of PC-cell-derived growth factor (PCDGF) in breast cancer and breast adenofibroma, and to compare with other commonly used clinical pathological indices, then to investigate the diagnostic and targeted therapeutic purpose of PCDGF in breast cancer tissue. In this study, we detected the expression of PCDGF, p53 and CerbB-2 in breast cancer tissue and the expression of PCDGF in breast adenofibroma tissue by immunohistochemical method, and analyzed the relationship between them. We found that PCDGF was expressed in most breast cancer tissue, but was not in breast adenofibroma tissue, and the expression of PCDGF was related with the tumor’s pathological category and the expression of estrogen receptor (ER) and progesterone receptor (PR) and p53, but there was no statistical dependability between PCDGF and cerbB-2. From this study, we predict that PCDGF may serve as a marker in the secondary diagnosis of breast cancer, and may participate in the generation and differentiation of breast cancer cells, and become an effective target of therapy for breast cancer.
- Published
- 2009
18. Overexpression of PIP5KL1 suppresses cell proliferation and migration in human gastric cancer cells
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Yiming Ma, Mei Zhao, Xinghua Yuan, Changzhi Huang, Jialing Zhong, Lan Shi, and Qing Luo
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Serum ,AKT1 ,Biology ,Immunofluorescence ,Cell Movement ,Stomach Neoplasms ,Cell Line, Tumor ,Genetics ,medicine ,Humans ,RNA, Messenger ,Phosphorylation ,Molecular Biology ,Cell Proliferation ,Wound Healing ,Tissue microarray ,medicine.diagnostic_test ,Cell growth ,Cancer ,Cell migration ,General Medicine ,medicine.disease ,Immunohistochemistry ,Molecular biology ,Gene Expression Regulation, Neoplastic ,Phosphotransferases (Alcohol Group Acceptor) ,Protein Transport ,Gastric Mucosa ,Tissue Array Analysis ,Cancer cell ,Proto-Oncogene Proteins c-akt ,Immunostaining ,Subcellular Fractions - Abstract
Phosphatidylinositol-4-phosphate 5-kinase-like 1 (PIP5KL1), the forth member of phosphatidylinositol-4-phosphate 5-kinases (PIPKs) type I, acts as a scaffold for localization and activation of PIPKs, which mediates numerous cellular processes. However, the role of PIP5KL1 in the development of human cancer is still lacking. We therefore examined the expression of PIP5KL1 in human normal and cancer tissues by tissue microarrays (TMAs). Reverse transcription-polymerase chain reaction (RT-PCR) and immunofluorescence imaging analysis were used to testify the mRNA and protein levels of PIP5KL1 in human gastric cancer cell line (BGC823). The cell proliferation was investigated with 3-(4,5)-dimethylthiahiazo (-z-y1)-3,5-di-phenytetrazoliumromide (MTT) assay. Both wound healing and transwell migration assay were performed to study the cell migration. The phosphorylation of v-akt murine thymoma viral oncogene homolog 1 (AKT1) was determined by western immunoblot analysis. Immunostaining of gastric cancer tissue microarrays revealed a negative correlation between PIP5KL1 overexpression and gastric cancer in situ. Transient transfection PIP5KL1 induced a significant increase expression at both transcriptional and translational levels and consequent robust inhibition of proliferation (P
- Published
- 2009
19. Lentivirus-mediated Inhibition of Tumour Necrosis Factor-α improves motor function associated with PRDX6 in spinal cord contusion rats
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Qingjie Xia, Di Jiang, Ting-hua Wang, Zhan-qiong Zhong, Xia Gao, Lan-lan Shi, Xi Zeng, Xi Hu, Xiao Zhang, Ying Rao, Lei Li, Xiu-juan Li, Jian-min Chen, and Tian-zhi Li
- Subjects
Pathology ,medicine.medical_specialty ,Necrosis ,Genetic Vectors ,Gene Expression ,Motor Activity ,Biology ,Immunofluorescence ,Blood–brain barrier ,Article ,Transduction, Genetic ,Gene expression ,medicine ,Animals ,Spinal cord injury ,Spinal Cord Injuries ,Multidisciplinary ,medicine.diagnostic_test ,Tumor Necrosis Factor-alpha ,Lentivirus ,medicine.disease ,Spinal cord ,Rats ,Disease Models, Animal ,Protein Transport ,medicine.anatomical_structure ,Blood-Brain Barrier ,Immunohistochemistry ,Female ,RNA Interference ,Tumor necrosis factor alpha ,medicine.symptom ,Peroxiredoxin VI - Abstract
The recovery of motor function in rats is inhibited following contusion spinal cord injury (cSCI). However, the mechanism of tumour necrosis factor α (TNF-α) in motor function after cSCI associated with peroxiredoxin 6 (PRDX6) remains unknown. We randomly divided rats into four groups: sham, cSCI, vector and lentivirus mediating TNF-α RNA interference (TNF-α-RNAi-LV) group. The Basso, Beattie, Bresnahan (BBB) scale was used to evaluate motor function. Real-time quantitative PCR (qRT-PCR) and western blotting were used to detect the expression of TNF-α and PRDX6, which were located in neurons using immunohistochemistry (IHC) and immunofluorescence. Subsequently, lentiviral-mediated TNF-α was used to determine the role of TNF-αand the relationship of PRDX6 and TNF-α in cSCI. After cSCI, the motor capability of hind limbs disappeared and was followed by recovery of function. IHC analysis indicated that TNF-α and PRDX6 were primarily located in spinal cord neurons. TNF-α interference significantly improved neural behaviour and increased expression of PRDX6. Our study suggests that inhibition of TNF-α can promote the recovery of motor function. The underlying mechanism of TNF-α-promoted motor function may be connected with the up-regulation of PRDX6. This provides a new strategy or target for the clinical treatment of SCI in future.
- Published
- 2015
20. CHAC2, downregulated in gastric and colorectal cancers, acted as a tumor suppressor inducing apoptosis and autophagy through unfolded protein response
- Author
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Yeye Kuang, Chao He, Chan Wang, Qiang Li, Shuiping Liu, Qing-Lan Shi, Xiaotong Hu, and Weiqiang Fei
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Male ,0301 basic medicine ,Cancer Research ,Colorectal cancer ,Immunology ,Down-Regulation ,Mice, Nude ,Apoptosis ,Tumor M2-PK ,Biology ,Transfection ,Mice ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Western blot ,Stomach Neoplasms ,Autophagy ,medicine ,Animals ,Humans ,Genes, Tumor Suppressor ,Mice, Inbred BALB C ,medicine.diagnostic_test ,Cell Biology ,HCT116 Cells ,medicine.disease ,Gene expression profiling ,030104 developmental biology ,030220 oncology & carcinogenesis ,Unfolded Protein Response ,Unfolded protein response ,Cancer research ,Heterografts ,Immunohistochemistry ,Original Article ,Female ,Colorectal Neoplasms ,HT29 Cells ,gamma-Glutamylcyclotransferase - Abstract
Tumor suppressor genes play a key role in cancer pathogenesis. Through massive expression profiling we identified CHAC2 as a frequently downregulated gene in gastric and colorectal cancers. Immunohistochemistry and western blot revealed that CHAC2 was downregulated in most tumor tissues, and 3-year survival rate of patients with high CHAC2 expression was significantly higher than that of patients with low CHAC2 expression (PP=0.001, respectively). The data of univariate analysis and multivariate analysis suggested that CHAC2 could serve as an independent prognostic marker. Our results showed for the first time that CHAC2 was degraded by the ubiquitin-proteasome pathway and CHAC2 expression inhibited tumor cell growth, proliferation, migration in vitro and in vivo. Mechanistic study showed that CHAC2 induced mitochondrial apoptosis and autophagy through unfolded protein response. So in gastric and colorectal cancer CHAC2 acted as a tumor suppressor and might have therapeutic implication for patients.
- Published
- 2017
21. Histopathological features of invasion of breast invasive ductal carcinoma and safety of breast-conserving surgery
- Author
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Zhi Li, Lan Shi, Huaxiong Pan, Chunping Liu, and Tao Huang
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Adult ,Pathology ,medicine.medical_specialty ,Adolescent ,Axillary lymph nodes ,Receptor, ErbB-2 ,Breast surgery ,medicine.medical_treatment ,Biomedical Engineering ,Breast Neoplasms ,Modified Radical Mastectomy ,Biochemistry ,Metastasis ,Biomaterials ,Young Adult ,Breast cancer ,Genetics ,medicine ,Carcinoma ,Breast-conserving surgery ,Humans ,Neoplasm Invasiveness ,Grading (tumors) ,Mastectomy ,Aged ,Earth-Surface Processes ,business.industry ,Carcinoma, Ductal, Breast ,Middle Aged ,medicine.disease ,medicine.anatomical_structure ,Lymphatic Metastasis ,Axilla ,Female ,Lymph Nodes ,business - Abstract
In order to investigate the relationship between the extent of tumor invasion and the tumor size, axillary lymph nodes metastasis, Her-2 gene overexpression, and histologic grading in breast invasive ductal carcinoma as well as the optimal extent of excision during the breast-serving surgery, the clinical data of 104 patients with breast invasive ductal carcinoma who had received modified radical mastectomy were analyzed. The correlation analysis on invasive extent, which was evaluated by serial sections at an interval of 0.5 cm from 4 different directions taking the focus as the centre, and the tumor size, axillary lymph nodes metastasis, Her-2 gene overexpression, and histologic grading was processed. There was a significant correlation between invasive extent and tumor size (r=0.766, P0.01), and lymph nodes metastases (r=0.574, P0.01), but there was no significant correlation between invasive extent and Her-2 expression (r=0.106, P0.05), and histologic grading (r=0.228, P0.05). The 100% negative rate of infiltration in patients without nipple discharge with tumor size2, 2-3 and3 cm was obtained at 1.5, 2.0 and 2.5 cm away from the tumor respectively. It is concluded that the performance of breast-serving surgery in patients with breast invasive ductal carcinoma should be evaluated by tumor size in combination with axillary lymph nodes involvement to decide the possibility of breast-serving and the secure excision extent.
- Published
- 2009
22. Professor HE Jin-sen’s experience in treating difficult and complicated diseases by acupuncture-moxibustion
- Author
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Xiao-lan Shi
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medicine.medical_specialty ,Complementary and alternative medicine ,business.industry ,Acupuncture moxibustion ,Alternative medicine ,medicine ,Physical therapy ,Acupuncture ,business - Published
- 2007
23. Effect of prepared rhubarb on insulin resistance in patients with pregnancy induced hypertension
- Author
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Zi-fen, Wang, primary, Shao-lan, Shi, additional, and Hai-xiang, Song, additional
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- 2003
- Full Text
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24. Study of Okinawa Trough sedimentation rates and paleoenvironment based on uranium series isotope
- Author
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Feng-ye, Li, primary and Yu-lan, Shi, additional
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- 1996
- Full Text
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