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Increased Autophagy Enhances the Resistance to Tumor Necrosis Factor-Alpha Treatment in Rheumatoid Arthritis Human Fibroblast-Like Synovial Cell

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单位: [1]Huazhong Univ Sci & Technol, Puai Hosp, Tongji Med Coll, Dept Nephrol & Rheumatol, Wuhan, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Dept Rheumatol & Immunol, Wuhan, Hubei, Peoples R China
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Tumor Necrosis Factor-alpha (TNF-alpha) was reported to increase autophagy in rheumatoid arthritis human fibroblast-like synovial cell (RA-HFLS). We investigated different levels of TNF-alpha exposed to RA-HFLS by focusing on the relationship of autophagy and apoptosis. RA-HFLS and normal human fibroblast-like synovial cell (HFLS) were stimulated by TNF-alpha in the presence or the absence of 3-methyladenine (3-MA) or chloroquine (CQ). Cell apoptosis was detected by flow cytometry. Autophagy was determined through the expression levels of LC3, Beclin1, and P62 measured by Western Blot analysis as well as Confocal Laser Scanning Microscopy. The basal autophagy level was significantly higher in RA-HFLS than in HFLS. Autophagy was enhanced both in RA-HFLS and HFLS when they were treated with TNF-alpha. With the treatment of TNF-alpha, a slightly higher autophagy level was found in RA-HFLS than in HFLS, without a dose dependent effect. When autophagy was inhibited by 3-MA or CQ, apoptosis increased in both groups. With the stimulation of different doses TNF-alpha, apoptosis was much higher in HFLS group than in RAHFLS. Autophagy is a protection mechanism when treated by TNF-alpha in RA-HFLS.

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出版当年[2017]版:
大类 | 3 区 生物
小类 | 3 区 生物工程与应用微生物 4 区 医学:研究与实验
最新[2025]版:
大类 | 4 区 医学
小类 | 4 区 生物工程与应用微生物 4 区 医学:研究与实验
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出版当年[2016]版:
Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Q3 MEDICINE, RESEARCH & EXPERIMENTAL
最新[2024]版:
Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Q3 MEDICINE, RESEARCH & EXPERIMENTAL

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第一作者单位: [1]Huazhong Univ Sci & Technol, Puai Hosp, Tongji Med Coll, Dept Nephrol & Rheumatol, Wuhan, Hubei, Peoples R China
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