國家衛生研究院 NHRI:Item 3990099045/7055
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    题名: Activation of PPAR-alpha induces cell cycle arrest and inhibits transforming growth factor-beta1 induction of smooth muscle cell phenotype in 10T1/2 mesenchymal cells
    其它题名: Activation of PPAR-α induces cell cycle arrest and inhibits transforming growth factor-β1 induction of smooth muscle cell phenotype in 10T1/2 mesenchymal cells
    作者: Lien, SC;Wei, SY;Chang, SF;Chang, MDT;Chang, JY;Chiu, JJ
    贡献者: Institute of Cellular and Systems Medicine;National Institute of Cancer Research
    摘要: Transforming growth factor-β1 (TGF-β1) regulates the cell cycle and the differentiation of mesenchymal cells into smooth muscle cells (SMCs). However, the precise intracellular signaling pathways involved in these processes have not been fully clarified. It has also been shown that there is an increase in TGF-β1 expression in human atherosclerotic plaques. Furthermore, peroxisome proliferator-activated receptors (PPARs) and their agonists have recently gained more attention in the study of the pathogenesis of atherosclerosis. In this study, we examined the role of PPARs in the TGF-β1-mediated cell cycle control and SMC phenotypic modulation of C3H10T1/2 (10T1/2) mesenchymal cells. The results showed the following: (1) the PI3K/Akt/p70S6K signaling cascade is involved in TGF-β1-induced differentiation of 10T1/2 cells into cells with a SMC phenotype. (2) PPAR-α agonists (i.e., WY14,643 and clofibrate), but not a PPAR-δ/β agonist (GW501516) or PPAR-γ agonist (troglitazone), inhibit TGF-β1-induced SMC markers and the DNA binding activity of serum response factor (SRF) in 10T1/2 cells. (3) WY14,643 and clofibrate inhibit the TGF-β1 activation of the Smad3/Akt/P70S6K signaling cascade. (4) TGF-β1-induced cell cycle arrest at the G0/G1 phases is mediated by Smad3 in 10T1/2 cells. (5) The PPAR-α-mediated 10T1/2 cell cycle arrest at the G0/G1 phases is TGF-β receptor independent. These results suggest that PPAR-α mediates cell cycle control and TGF-β1-induced SMC phenotypic changes in 10T1/2 cells.
    日期: 2013-05
    關聯: Cellular Signalling. 2013 May;25(5):1252-1263.
    Link to: http://dx.doi.org/10.1016/j.cellsig.2013.01.021
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0898-6568&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000318377300024
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84875090022
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