PMID- 30154485 OWN - NLM STAT- MEDLINE DCOM- 20190517 LR - 20210302 IS - 2092-6413 (Electronic) IS - 1226-3613 (Print) IS - 1226-3613 (Linking) VI - 50 IP - 8 DP - 2018 Aug 28 TI - PRMT1 mediates RANKL-induced osteoclastogenesis and contributes to bone loss in ovariectomized mice. PG - 1-15 LID - 10.1038/s12276-018-0134-x [doi] LID - 111 AB - Protein arginine methylation is a novel form of posttranslational modification mediated by protein arginine methyltransferase (PRMTs). PRMT1, a major isoform of the PRMT family, is responsible for various biological functions, including cellular differentiation. Although the important function that PRMT1 plays in various tissues is being increasingly recognized, its role in receptor activation of NF-kappaB ligand (RANKL)-induced osteoclastogenesis or osteoporosis has not yet been described. Here, we show that PRMT1 is essential for RANKL-induced osteoclastogenesis in vitro and for bone loss in vivo. RANKL treatment increased the expression of PRMT1 and its nuclear localization in bone marrow-derived macrophages (BMDMs) in a c-Jun N-terminal kinase (JNK)-dependent manner. Silencing PRMT1 attenuated RANKL-induced osteoclastogenesis by decreasing tartrate-resistant acid phosphatase (TRAP)-positive cells and inhibiting F-actin ring formation and bone resorption, which was confirmed in a separate experiment using haploinsufficient cells from PRMT1(+/-) mice. Our results also revealed that PRMT1 regulates the transcription activity of NF-kappaB by directly interacting with it in RANKL-treated BMDMs. An in vivo study showed that the haploinsufficiency of PRMT1 reduced the enzyme activity of TRAP and increased the bone mineral density in the metaphysis of ovariectomized (OVX) mice. Finally, treatment with estrogen (E2) downregulated the RANKL-induced expression of PRMT1, suggesting that estrogen may exert an inhibitory effect on osteoclastogenesis by suppressing PRMT1 expression. Our results suggest that PRMT1 plays an important role in the progression of osteoporosis and that it might be a good therapeutic target for postmenopausal osteoporosis. FAU - Choi, Joo-Hee AU - Choi JH AD - Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea. FAU - Jang, Ah-Ra AU - Jang AR AD - Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea. FAU - Kim, Dong-Il AU - Kim DI AD - Department of Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea. FAU - Park, Min-Jung AU - Park MJ AD - Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, 48109, USA. FAU - Lim, Seul-Ki AU - Lim SK AD - Microbiology and Functionality Research Group, World Institute of Kimchi, Gwangju, 61755, Republic of Korea. FAU - Kim, Myung-Sun AU - Kim MS AD - Department of Orthopaedic Surgery, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea. FAU - Park, Jong-Hwan AU - Park JH AD - Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, Republic of Korea. jonpark@jnu.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180828 PL - United States TA - Exp Mol Med JT - Experimental & molecular medicine JID - 9607880 RN - 0 (Estrogens) RN - 0 (RANK Ligand) RN - 0 (Transcription Factor RelA) RN - EC 2.1.1.319 (Prmt1 protein, mouse) RN - EC 2.1.1.319 (Protein-Arginine N-Methyltransferases) RN - EC 2.7.11.24 (JNK Mitogen-Activated Protein Kinases) SB - IM MH - Animals MH - Bone Resorption/*enzymology/*pathology MH - Cell Differentiation/drug effects MH - Down-Regulation/drug effects MH - Estrogens/pharmacology MH - Female MH - Haploinsufficiency MH - JNK Mitogen-Activated Protein Kinases/metabolism MH - Macrophages/drug effects/metabolism MH - Mice, Inbred C57BL MH - Osteoclasts/drug effects/metabolism/pathology MH - Osteogenesis/*drug effects MH - *Ovariectomy MH - Phenotype MH - Protein Binding/drug effects MH - Protein-Arginine N-Methyltransferases/*metabolism MH - RANK Ligand/*pharmacology MH - Transcription Factor RelA/metabolism MH - Up-Regulation/drug effects PMC - PMC6113271 COIS- The authors declare that they have no conflict of interest. EDAT- 2018/08/30 06:00 MHDA- 2019/05/18 06:00 PMCR- 2018/08/28 CRDT- 2018/08/30 06:00 PHST- 2018/01/03 00:00 [received] PHST- 2018/05/29 00:00 [accepted] PHST- 2018/05/14 00:00 [revised] PHST- 2018/08/30 06:00 [entrez] PHST- 2018/08/30 06:00 [pubmed] PHST- 2019/05/18 06:00 [medline] PHST- 2018/08/28 00:00 [pmc-release] AID - 10.1038/s12276-018-0134-x [pii] AID - 134 [pii] AID - 10.1038/s12276-018-0134-x [doi] PST - epublish SO - Exp Mol Med. 2018 Aug 28;50(8):1-15. doi: 10.1038/s12276-018-0134-x.