PMID- 32887644 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20220531 IS - 1478-6362 (Electronic) IS - 1478-6354 (Print) IS - 1478-6354 (Linking) VI - 22 IP - 1 DP - 2020 Sep 4 TI - PRMT5 inhibition attenuates cartilage degradation by reducing MAPK and NF-kappaB signaling. PG - 201 LID - 10.1186/s13075-020-02304-x [doi] LID - 201 AB - OBJECTIVES: A role for the type II arginine methyltransferase PRMT5 in various human diseases has been identified. In this study, the potential mechanism underlying the involvement of PRMT5 in the pathological process leading to osteoarthritis (OA) was investigated. METHODS: PRMT5 expression in cartilage tissues from patients with OA and control individuals was assessed by immunohistochemical staining. The regulatory and functional roles of PRMT5 in the chondrocytes of patients with OA and control individuals were determined by western blotting and reverse transcription polymerase chain reaction. The effects of the PRMT5 inhibitor EPZ on interleukin-1beta-induced inflammation were examined in the chondrocytes of patients with OA and in the destabilized medial meniscus (DMM) of a mouse model of OA. RESULTS: PRMT5 was specifically upregulated in the cartilage of patients with OA. Moreover, adenovirus-mediated overexpression of PRMT5 in human chondrocytes caused cartilage degeneration. This degeneration was induced by elevated expression levels of matrix-degrading enzymes (matrix metalloproteinase-3 (MMP-3) and matrix metalloproteinase-13 (MMP-13)) in chondrocytes. The activation of the MAPK and nuclear factor kappaB signaling pathways was evidenced by elevated levels of p-p65, p-p38, and p-JNK. These effects were attenuated by inhibiting the expression of PRMT5. In the mouse model, EPZ inhibited PRMT5 expression, thus protecting mouse cartilage from DMM-induced OA. CONCLUSIONS: Our results demonstrate that PRMT5 is a crucial regulator of OA pathogenesis, implying that EPZ has therapeutic value in the treatment of this cartilage-destroying disease. FAU - Dong, Yonghui AU - Dong Y AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Wang, Ping AU - Wang P AD - Department of pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China. AD - Department of Molecular Pathology, The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, China. FAU - Yang, Yongguang AU - Yang Y AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Huang, Jincheng AU - Huang J AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Dai, Zhipeng AU - Dai Z AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Zheng, Wendi AU - Zheng W AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Li, Zhen AU - Li Z AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Yao, Zheng AU - Yao Z AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Zhang, Hongjun AU - Zhang H AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. FAU - Zheng, Jia AU - Zheng J AUID- ORCID: 0000-0002-0248-4307 AD - Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Henan University People's Hospital, No.7, Weiwu Road, Zhengzhou, 450003, Henan Province, China. zhengjia90180@sina.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200904 PL - England TA - Arthritis Res Ther JT - Arthritis research & therapy JID - 101154438 RN - 0 (Interleukin-1beta) RN - 0 (NF-kappa B) RN - EC 2.1.1.319 (PRMT5 protein, human) RN - EC 2.1.1.319 (Protein-Arginine N-Methyltransferases) SB - IM MH - *Cartilage, Articular/metabolism MH - Cells, Cultured MH - Chondrocytes/metabolism MH - Humans MH - Inflammation MH - Interleukin-1beta MH - NF-kappa B/metabolism MH - *Osteoarthritis/genetics MH - Protein-Arginine N-Methyltransferases/genetics MH - Signal Transduction PMC - PMC7650297 OTO - NOTNLM OT - Chondrocytes OT - DMM model OT - Kinases OT - Osteoarthritis OT - PRMT5 COIS- The authors have no competing interests to declare. EDAT- 2020/09/06 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/09/04 CRDT- 2020/09/05 05:15 PHST- 2020/02/29 00:00 [received] PHST- 2020/08/25 00:00 [accepted] PHST- 2020/09/05 05:15 [entrez] PHST- 2020/09/06 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/09/04 00:00 [pmc-release] AID - 10.1186/s13075-020-02304-x [pii] AID - 2304 [pii] AID - 10.1186/s13075-020-02304-x [doi] PST - epublish SO - Arthritis Res Ther. 2020 Sep 4;22(1):201. doi: 10.1186/s13075-020-02304-x.