PMID- 32410875 OWN - NLM STAT- MEDLINE DCOM- 20210709 LR - 20210730 IS - 1466-1861 (Electronic) IS - 0962-9351 (Print) IS - 0962-9351 (Linking) VI - 2020 DP - 2020 TI - lncRNA IGHCgamma1 Acts as a ceRNA to Regulate Macrophage Inflammation via the miR-6891-3p/TLR4 Axis in Osteoarthritis. PG - 9743037 LID - 10.1155/2020/9743037 [doi] LID - 9743037 AB - Accumulating data have implicated that long noncoding RNA (lncRNA) plays an important role in osteoarthritis (OA), which may function as a competitive endogenous RNA (ceRNA) of microRNAs (miRNAs). lncRNA IGHCgamma1 has been demonstrated to regulate inflammation and autoimmunity. Nonetheless, the altering effect of IGHCgamma1 in OA remains unclear. This study is aimed at investigating the mechanism and function of lncRNA IGHCgamma1 in OA. CCK-8, EdU, and transwell assays were used to estimate macrophage proliferation and migration. Fluorescence in situ hybridization (FISH) was performed to estimate the local expression of lncRNA IGHCgamma1 in macrophages. Luciferase reporter assay was adopted to validate the ceRNA role of IGHCgamma1 as miRNA sponge. lncRNA IGHCgamma1 was primarily localized in macrophage cytoplasm and upregulated in OA. miR-6891-3p inhibited macrophage proliferation, migration, and inflammatory response by targeting TLR4, while lncRNA IGHCgamma1 promoted TLR4 expression by functioning as a ceRNA for miR-6891-3p through the NF-kappaB signal in macrophages. This study strongly supports that lncRNA IGHCgamma1 regulates inflammatory response via regulating the miR-6891-3p/TLR4/NF-kappaB axis in macrophages. CI - Copyright (c) 2020 Pengjun Zhang et al. FAU - Zhang, Pengjun AU - Zhang P AD - Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266100, China. AD - Department of Emergency Surgery, People's Hospital of Rizhao, Rizhao 276800, China. FAU - Sun, Jianmei AU - Sun J AD - Department of Chemistry, School of Applied Chemistry, Food and Drug, Weifang Engineering Vocational College, Qingzhou 262500, China. FAU - Liang, Caihong AU - Liang C AD - Department of Cardiovasology, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing 210000, China. FAU - Gu, Bingjie AU - Gu B AD - Department of Rheumatology and Immunology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China. FAU - Xu, Yang AU - Xu Y AD - National Center for Occupational Safety and Health, NHC, Beijing 100023, China. FAU - Lu, Hongying AU - Lu H AD - Functional Laboratory, Weifang Medical University, Weifang 261000, China. FAU - Cao, Bo AU - Cao B AUID- ORCID: 0000-0003-4621-9924 AD - Department of Emergency Medicine, Affiliated Hospital of Weifang Medical University, Weifang 261000, China. FAU - Xu, Hao AU - Xu H AUID- ORCID: 0000-0003-2809-5243 AD - Department of Joint Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266100, China. LA - eng PT - Journal Article DEP - 20200117 PL - United States TA - Mediators Inflamm JT - Mediators of inflammation JID - 9209001 RN - 0 (MIRN6891 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (NF-kappa B) RN - 0 (RNA, Long Noncoding) RN - 0 (TLR4 protein, human) RN - 0 (Toll-Like Receptor 4) SB - IM MH - Adult MH - Aged MH - Apoptosis/drug effects MH - Autoimmunity MH - Case-Control Studies MH - Cell Movement MH - Cell Proliferation MH - Female MH - Gene Expression Regulation, Neoplastic MH - Humans MH - In Situ Hybridization, Fluorescence MH - Inflammation MH - Macrophages/*metabolism MH - Male MH - MicroRNAs/*metabolism MH - Middle Aged MH - NF-kappa B/metabolism MH - Osteoarthritis/*metabolism MH - RNA, Long Noncoding/*metabolism MH - Signal Transduction/genetics MH - Toll-Like Receptor 4/*metabolism PMC - PMC7201504 COIS- All authors have no conflicts of interest to disclose. EDAT- 2020/05/16 06:00 MHDA- 2021/07/10 06:00 PMCR- 2020/01/17 CRDT- 2020/05/16 06:00 PHST- 2019/11/08 00:00 [received] PHST- 2020/01/04 00:00 [accepted] PHST- 2020/05/16 06:00 [entrez] PHST- 2020/05/16 06:00 [pubmed] PHST- 2021/07/10 06:00 [medline] PHST- 2020/01/17 00:00 [pmc-release] AID - 10.1155/2020/9743037 [doi] PST - epublish SO - Mediators Inflamm. 2020 Jan 17;2020:9743037. doi: 10.1155/2020/9743037. eCollection 2020.