Feb 10, 2018

miR-212-3p reduced proliferation, and promoted apoptosis of fibroblast-like synoviocytes via down-regulating SOX5 in rheumatoid arthritis

European Review for Medical and Pharmacological Sciences
Y LiuX Zhao


Several microRNAs have been reported to contribute the progression of rheumatoid arthritis (RA) due to the ectopic expression of miRNAs in fibroblast-like synoviocytes (FLS). However, the function of miR-212-3p in RA still has not been mentioned before. We obtained serum, synovial tissues, and FLS samples from RA patients and normal donors. Quantitative Real-time polymerase chain reaction (qRT-PCR) was used to analysis the expression level of miR-212-3p. By using miR-212-3p mimics and inhibitors, we detected the effects of miR-212-3p on cell proliferation, cell cycle, and apoptosis in RA-FLS. Dual-luciferase and Western-blot were employed to verify the target of miR-212-3p. In addition, we over-expressed the SOX5 in miR-212-3p mimics treatment FLS to emphasize our results. The level of miR-212-3p in serum, synovial tissues, and FLS from RA patients was lower than these in relative normal group. Up-regulation of miR-212-3p inhibited cell proliferation, promoted cell apoptosis; however, knockdown of miR-212-3p promoted cell growth but reduced cell apoptotic rate. Furthermore, we found SOX5 as a direct target of miR-212-3p in RA-FLS and up-regulation of SOX5 reversed the effects of miR-212-3p over-expression. miR-212-3p could redu...Continue Reading

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Mentioned in this Paper

Apoptosis, Intrinsic Pathway
Gene Knockdown Techniques
Western Blotting
Receptor Down-Regulation
RNA, Small Temporal
MIRN212 microRNA, human
Synovial Membrane
G1-S Phase Cell Cycle Checkpoint

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Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis