PMID- 35559382 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220516 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 14 IP - 4 DP - 2022 TI - Circ_MTM1 knockdown inhibits the progression of HBV-related liver fibrosis via regulating IL7R expression through targeting miR-122-5p. PG - 2199-2211 AB - BACKGROUND AND OBJECTIVE: Hepatitis B virus (HBV) infection is the main reason for liver cirrhosis. The purpose of this research was to probe into the role and underlying mechanism of circ_myotubularin 1 (circ_MTM1) in HBV-related liver fibrosis (LF). METHODS: HBV surface antigen (HBsAg) and e antigen (HBeAg), as well as the levels of HBV DNA and HBV covalently closed circular DNA were measured by HBsAg and HBeAg ELISA kits or RT-qPCR. Western blot or immunohistochemistry assays were conducted to measure protein levels. The expression of circ_MTM1, microRNA-122-5p (miR-122-5p) and interleukin 7 receptor (IL7R) were measured using RT-qPCR. MTT and cell colony formation assays were performed to detect cell proliferation. In vivo assays were carried out to reveal the effect of circ_MTM1 silencing on the tumor growth in HBV-related hepatocellular carcinoma (HCC). RESULTS: Circ_MTM1 and IL7R were highly expressed, whereas miR-122-5p was lowly expressed in HBV-infected LX-2 cells. Circ_MTM1 knockdown inhibited the progression of HBV-related LF. Circ_MTM1 could target miR-122-5p to regulate the expression of IL7R by adsorbing miR-122-5p, thus mediating the progression of HBV-related LF. Circ_MTM1 silencing repressed cell proliferation of HepG2.2.15 cells and growth of HCC. CONCLUSION: Circ_MTM1 could serve as a promoter in HBV-related LF through miR-122-5p/IL7R axis. CI - AJTR Copyright (c) 2022. FAU - Li, Bin AU - Li B AD - Department of Pathogenic Biology, School of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. FAU - Li, Yonggang AU - Li Y AD - Department of Pathogenic Biology, School of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. FAU - Li, Shuhua AU - Li S AD - Laboratory of Immunology and Pathogenic Biology, Experimental Teaching Center of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. FAU - Li, Hongwei AU - Li H AD - Laboratory of Immunology and Pathogenic Biology, Experimental Teaching Center of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. FAU - Liu, Ling AU - Liu L AD - Laboratory of Immunology and Pathogenic Biology, Experimental Teaching Center of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. FAU - Yu, Haiying AU - Yu H AD - Laboratory of Ergology, Experimental Teaching Center of Basic Medicine, Jinzhou Medical University Jinzhou 121001, Liaoning, China. LA - eng PT - Journal Article DEP - 20220415 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC9091097 OTO - NOTNLM OT - Hepatitis B virus OT - IL7R OT - circ_MTM1 OT - miR-122-5p COIS- None. EDAT- 2022/05/14 06:00 MHDA- 2022/05/14 06:01 PMCR- 2022/04/15 CRDT- 2022/05/13 18:26 PHST- 2021/07/19 00:00 [received] PHST- 2022/03/17 00:00 [accepted] PHST- 2022/05/13 18:26 [entrez] PHST- 2022/05/14 06:00 [pubmed] PHST- 2022/05/14 06:01 [medline] PHST- 2022/04/15 00:00 [pmc-release] PST - epublish SO - Am J Transl Res. 2022 Apr 15;14(4):2199-2211. eCollection 2022.