Antifibrotic effects of roscovitine in normal and scleroderma fibroblasts.

Antifibrotic effects of roscovitine in normal and scleroderma fibroblasts.
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DOI:
10.1371/journal.pone.0048560
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Feghali-Bostwick CA
Feghali-Bostwick CA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Steinman RA;Robinson AR;Feghali-Bostwick CA

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胶原和其他基质蛋白的产生增加是系统性硬化症(SSc)纤维化表型的基础。Roscovitine是一种细胞周期蛋白依赖性激酶抑制剂,可促进细胞周期(CDK 1,2)、神经元发育(CDK 5)和控制转录(CDK 7,9)。在体内肾小球肾炎模型中,roscovitine治疗降低了系膜细胞增殖和基质蛋白。我们研究了roscovitine是否可以直接调节纤维化蛋白的产生,而不是通过细胞周期。我们的研究表明,roscovitine协调抑制胶原蛋白,纤连蛋白和结缔组织生长因子(CTGF)在正常和SSc成纤维细胞的表达。这种作用发生在转录的基础上,并没有从roscovitine介导的细胞周期抑制。Roscovitine介导的基质蛋白抑制不能被外源性促纤维化细胞因子TGF-β或IL-6逆转。据我们所知,我们是第一个报告roscovitine调节基质蛋白转录。因此,Roscovitine可能是SSc和其他纤维化疾病的可行治疗选择。
Heightened production of collagen and other matrix proteins underlies the fibrotic phenotype of systemic sclerosis (SSc). Roscovitine is an inhibitor of cyclin-dependent kinases that promote cell cycling (CDK1, 2), neuronal development (CDK5) and control transcription (CDK7,9). In an in vivo glomerulonephritis model, roscovitine treatment decreased mesangial cell proliferation and matrix proteins. We investigated whether roscovitine could regulate fibrotic protein production directly rather than through cell cycling. Our investigations revealed that roscovitine coordinately inhibited the expression of collagen, fibronectin, and connective tissue growth factor (CTGF) in normal and SSc fibroblasts. This effect occurred on a transcriptional basis and did not result from roscovitine-mediated cell cycle inhibition. Roscovitine-mediated suppression of matrix proteins could not be reversed by the exogenous profibrotic cytokines TGF-β or IL-6. To our knowledge, we are the first to report that roscovitine modulates matrix protein transcription. Roscovitine may thus be a viable treatment option for SSc and other fibrosing diseases.
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