RRC ID 52111
著者 Tsukune N, Naito M, Kubota T, Ozawa Y, Nagao M, Ohashi A, Sato S, Takahashi T.
タイトル Lamin A overexpression promotes osteoblast differentiation and calcification in the MC3T3-E1 preosteoblastic cell line.
ジャーナル Biochem Biophys Res Commun
Abstract Lamin A/C is a component of the nuclear lamina, which is involved in cellular proliferation and differentiation. However, the mechanism by which lamin A regulates osteoblast differentiation is not well understood. In this study, we investigated lamin A/C expression during osteoblast differentiation in a preosteoblastic cell line, MC3T3-E1. Real-time PCR analysis showed that lamin A/C mRNA expression was upregulated during BMP-2 induced osteoblast differentiation. Treatment with the estrogen receptor antagonist, fulvestrant, inhibited osteoblast differentiation and the upregulation of lamin A/C mRNA and protein expressions in the presence of BMP-2. These results clearly demonstrated that lamin A/C expression correlates with osteoblast differentiation. To determine the roles of lamin A expression in osteoblast differentiation, MC3T3-E1 cells were transfected with a vector overexpressing lamin A. Results showed that lamin A overexpression promoted osteoblast differentiation and calcification by inducing the expression of alkaline phosphatase, type 1 collagen, BSP, osteocalcin, and DMP-1 in the presence of BMP-2. Furthermore, lamin A overexpression partially restored osteoblastic capacity in the presence of fulvestrant by increasing the expression of BSP, osteocalcin, and DMP-1. These results suggest that lamin A plays important roles in maintaining the osteoblast differentiation and function.
巻・号 488(4)
ページ 664-670
公開日 2017-7-8
DOI 10.1016/j.bbrc.2017.02.110
PII S0006-291X(17)30401-1
PMID 28237702
MeSH Animals Calcification, Physiologic* Cell Differentiation* Cells, Cultured Lamin Type A / genetics* Lamin Type A / metabolism Mice Mice, Inbred C57BL Osteoblasts / cytology* Osteoblasts / metabolism*
IF 2.985
引用数 13
リソース情報
ヒト・動物細胞 MC3T3-E1(RCB1126)