1α,25-Dihydroxyvitamin D3 Regulates microRNA Packaging in Extracellular Matrix Vesicles and Their Release in the Matrix

被引:0
作者
Niels C. Asmussen
Sheikh Alam
Zhao Lin
David J. Cohen
Zvi Schwartz
Barbara D. Boyan
机构
[1] Virginia Commonwealth University,School of Integrative Life Sciences
[2] Virginia Commonwealth University,School of Dentistry
[3] Virginia Commonwealth University,College of Engineering
[4] University of Texas Health Science Center at San Antonio,Department of Periodontics
[5] Georgia Institute of Technology,Wallace H. Coulter Department of Biomedical Engineering
来源
Calcified Tissue International | 2023年 / 112卷
关键词
Matrix vesicles; 1α,25-dihydroxyvitamin D3; microRNA; Growth plate cartilage; Chondrocytes; Endocytosis;
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学科分类号
摘要
Growth plate chondrocytes are regulated by numerous factors and hormones as they mature during endochondral bone formation, including transforming growth factor beta-1 (TGFb1), bone morphogenetic protein 2 (BMP2), insulin-like growth factor-1 (IFG1), parathyroid hormone and parathyroid hormone related peptide (PTH, PTHrP), and Indian hedgehog (IHH). Chondrocytes in the growth plate’s growth zone (GC) produce and export matrix vesicles (MVs) under the regulation of 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3]. 1α,25(OH)2D3 regulates MV enzyme composition genomically and 1α,25(OH)2D3 secreted by the cells acts on the MV membrane nongenomically, destabilizing it and releasing MV enzymes. This study examined the regulatory role 1α,25(OH)2D3 has over production and packaging of microRNA (miRNA) into MVs by GC cells and the release of miRNA by direct action on MVs. Costochondral cartilage GC cells were treated with 1α,25(OH)2D3 and the miRNA in the cells and MVs sequenced. We also treated MVs with 1α,25(OH)2D3 and determined if the miRNA was released. To assess whether MVs can act directly with chondrocytes and if this is regulated by 1α,25(OH)2D3, we stained MVs with a membrane dye and treated GC cells with them. 1α,25(OH)2D3 regulated production and packaging of a unique population of miRNA into MVs compared to the vehicle control population. 1α,25(OH)2D3 treatment of MVs did not release miRNA. Stained MVs were endocytosed by GC cells and this was increased with 1α,25(OH)2D3 treatment. This study adds new regulatory roles for 1α,25(OH)2D3 with respect to packaging and transport of MV miRNAs.
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页码:493 / 511
页数:18
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