MiR-361-5p promotes proliferation and inhibits apoptosis of fibroblast-like synoviocytes via targeting ZBTB10 in rheumatoid arthritis

• Published in: Autoimmunity (Chur, Switzerland) Vol. 55; no. 5; pp. 310 - 317
• Main Authors: Zhang, Aixian, Lu, Rong, Lang, Huifang, Wu, Min
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis 04.07.2022; Taylor & Francis Group
• Subjects: fibroblast-like synovial cells; miR-361-5p; Rheumatoid arthritis; ZBTB10; ZBTB10; fibroblast-like synovial cells; Rheumatoid arthritis; miR-361-5p
• ISSN: 0891-6934; 1607-842X
• DOI: 10.1080/08916934.2022.2073588

This study is aimed to explore the key role of miR-361-5p in fibroblast-like synovial (FLS) cells of rheumatoid arthritis (RA) and explore the underlying mechanism. First, we performed RT-qPCR to evaluate the expression of miR-361-5p in both synovial tissues of RA patients and cultured RA-FLS cells. Then CCK-8 assay, EdU staining, Western blot, flow cytometry, and ELISA were conducted to estimate the influence of inhibiting miR-361-5p on RA-FLS cells. Moreover, we used bioinformatics analysis to predict the potential targets of miR-361-5p and perform a dual luciferase report assay for verification. Finally, rescue experiments were performed to prove the role of miR-361-5p/Zinc Finger And BTB Domain Containing 10 (ZBTB10) in the proliferation, cell cycle, and apoptosis of RA-FLS. We find that the expression of miR-361-5p is increased in both RA tissues and cultured RA-FLS cells. The inhibition of miR-361-5p can not only inhibit proliferation, arrest the cell cycle in G1/G0 phase, and increase apoptosis, but also reduce the inflammatory factors secreted by RA-FLS cells. In addition, ZBTB10 is a direct target for miR-361-5p, over-expression of ZBTB10 reverses the effect of miR-361-5p in RA-FLS. MiR-361-5p promotes the progression of rheumatoid arthritis by targeting ZBTB10. Key points The influences of miR-361-5p on RA-FLS cells.