"FRNKly, smooth muscle, I don't give a CArG!": a novel mechanism for smooth muscle cell differentiation.

"FRNKly, smooth muscle, I don't give a CArG!": a novel mechanism for smooth muscle cell differentiation.
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“FRNKly,平滑肌,我不给出 CArG!”:平滑肌细胞分化的新机制。

DOI:
10.1161/atvbaha.108.176875
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发表时间:
2008
期刊:
Arteriosclerosis, thrombosis, and vascular biology
影响因子:
--
通讯作者:
Wamhoff,BrianR
Wamhoff,BrianR
中科院分区:
--
文献类型:
--
作者:
Lemmon,JuliaA;Wamhoff,BrianR

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过去二十年的研究已经开始揭示平滑肌细胞(SMC)分化的分子机制,特别是普遍表达的血清反应因子(SRF)转录因子的关键作用。SRF选择性地结合到许多平滑肌选择性基因的启动子或第一内含子中的保守的顺式调节“CArG盒”元件CC(A/T)6 GG共有序列。SMC收缩标记基因平滑肌α肌动蛋白(SMαA)、平滑肌肌球蛋白重链(SM-MHC)和平滑肌22 α(SM 22 α)都需要多个CArG盒才能正确转录激活。在SRF结合时,辅激活因子myocardin通过与SRF的直接相互作用被募集到启动子,并且是表达含有SMC选择性基因的CArG所需的。1,2在这个问题上,
Studies spanning the last two decades have begun to uncover the molecular mechanisms underlying smooth muscle cell (SMC) differentiation, specifically the critical role of the ubiquitously expressed serum response factor (SRF) transcription factor. SRF selectively binds to conserved cis-regulatory “CArG box” elements, CC (A/T) 6GG consensus sequence, in the promoters or first introns of numerous smooth muscle-selective genes. The SMC contractile marker genes smooth muscle alpha actin (SMαA), smooth muscle myosin heavy chain (SM-MHC), and smooth muscle 22 alpha (SM22α) all require multiple CArG boxes for proper transcriptional activation. On SRF binding, the coactivator myocardin is recruited to the promoter through direct interaction with SRF and is required for expression of CArG containing SMC-selective genes. 1, 2 In this issue of
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