{"title":"mmu-miR-185 regulates osteoclasts differentiation and migration by targeting Btk","authors":"Dan He, Yueying Jiao, Jian Xu, Junjie Luo, Yaqi Cui, Xiabing Han, Hongshan Zhao","doi":"10.1002/jgm.3687","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Bones undergo a constant remodeling, a process involving osteoclast-mediated bone resorption and osteoblast-mediated bone formation, crucial for maintaining healthy bone mass. We previously observed that <i>miR-185</i> depletion may promote bone formation by regulating <i>Bgn</i> expression and the BMP/Smad signaling pathway. However, the effects of <i>miR-185-5p</i> on the osteoclasts and bone remodeling have not been elucidated, warranting further exploration.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Tartrate-resistant acid phosphatase staining was utilized to assess the differentiation ability of bone marrow mononuclear macrophages (BMMs) from <i>mmu-miR-185</i> gene knockout (KO) mice and wild-type (WT) mice. A reverse transcriptase-quantitative PCR was conducted to compare differences in <i>miR-185-5p</i> and osteoclast marker molecules, including <i>Trap</i>, <i>Dcstamp</i>, <i>Ctsk</i> and <i>Nfatc1</i>, between the KO group and WT group BMMs. Western blot analysis was employed to observe the expression of osteoclast marker molecules. A cell-counting kit-8 was used to analyze cell proliferation ability. Transwell experiments were conducted to detect cell migration. Dual-luciferase reporter assays were employed to confirm whether <i>Btk</i> is a downstream target gene of <i>miR-185-5p</i>.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p><i>miR-185</i> depletion promoted osteoclast differentiation in bone marrow-derived monocytes/macrophages. Overexpression of <i>miR-185-5p</i> in RAW264.7 cells inhibited differentiation and migration of osteoclasts. Furthermore, <i>Btk</i> was identified as a downstream target gene of <i>miR-185-5p</i>, suggesting that <i>miR-185-5p</i> may inhibit osteoclast differentiation and migration by targeting <i>Btk</i>.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p><i>miR-185</i> regulates osteoclasts differentiation, with overexpression of <i>miR-185-5p</i> inhibiting osteoclast differentiation and migration in vitro. Additionally, <i>miR-185-5p</i> may modulate osteoclastic differentiation and migration by regulating <i>Btk</i> expression.</p>\n </section>\n </div>","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jgm.3687","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
Background
Bones undergo a constant remodeling, a process involving osteoclast-mediated bone resorption and osteoblast-mediated bone formation, crucial for maintaining healthy bone mass. We previously observed that miR-185 depletion may promote bone formation by regulating Bgn expression and the BMP/Smad signaling pathway. However, the effects of miR-185-5p on the osteoclasts and bone remodeling have not been elucidated, warranting further exploration.
Methods
Tartrate-resistant acid phosphatase staining was utilized to assess the differentiation ability of bone marrow mononuclear macrophages (BMMs) from mmu-miR-185 gene knockout (KO) mice and wild-type (WT) mice. A reverse transcriptase-quantitative PCR was conducted to compare differences in miR-185-5p and osteoclast marker molecules, including Trap, Dcstamp, Ctsk and Nfatc1, between the KO group and WT group BMMs. Western blot analysis was employed to observe the expression of osteoclast marker molecules. A cell-counting kit-8 was used to analyze cell proliferation ability. Transwell experiments were conducted to detect cell migration. Dual-luciferase reporter assays were employed to confirm whether Btk is a downstream target gene of miR-185-5p.
Results
miR-185 depletion promoted osteoclast differentiation in bone marrow-derived monocytes/macrophages. Overexpression of miR-185-5p in RAW264.7 cells inhibited differentiation and migration of osteoclasts. Furthermore, Btk was identified as a downstream target gene of miR-185-5p, suggesting that miR-185-5p may inhibit osteoclast differentiation and migration by targeting Btk.
Conclusions
miR-185 regulates osteoclasts differentiation, with overexpression of miR-185-5p inhibiting osteoclast differentiation and migration in vitro. Additionally, miR-185-5p may modulate osteoclastic differentiation and migration by regulating Btk expression.