Gremlin enhances the determined path to cardiomyogenesis.

Gremlin enhances the determined path to cardiomyogenesis.
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DOI:
10.1371/journal.pone.0002407
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发表时间:
2008-06-11
期刊:
影响因子:
3.7
通讯作者:
Umezawa A
Umezawa A
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Kami D;Shiojima I;Makino H;Matsumoto K;Takahashi Y;Ishii R;Naito AT;Toyoda M;Saito H;Watanabe M;Komuro I;Umezawa A

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心脏形成的关键事件是中胚层细胞向心肌发生命运的转变,而心脏命运的决定受到一系列细胞因子的调节。骨形态发生蛋白(BMP)和成纤维细胞生长因子已被证明参与这一过程,但是需要确定其他因素来确定命运,特别是在心肌发生发育的早期阶段。使用一系列具有心肌生成潜力的人类细胞进行的全局基因表达分析表明,Gremlin (Grem1) 是负责体外心肌生成分化的候选基因。 Grem1 是一种已知的 BMP 拮抗剂,可将 DMSO 诱导的 P19CL6 胚胎癌细胞(CL6 细胞)在跳动的分化心肌细胞区域中的心肌生成增强 10-35 倍。 Grem1 的作用在 CL6 细胞注定要心肌形成的早期分化阶段最有效,并且是通过抑制 BMP2 介导的。此外,BMP2 抑制促进 CL6 心肌生成的 Wnt/β-catenin 信号传导。 Grem1 以特定阶段的方式增强心肌发生的确定路径,并且 BMP 信号通路的抑制参与了 Grem1 促进的心肌发生的初步确定。我们的结果为利用 Grem1 在人体中更新心血管系统提供了新的线索。
The critical event in heart formation is commitment of mesodermal cells to a cardiomyogenic fate, and cardiac fate determination is regulated by a series of cytokines. Bone morphogenetic proteins (BMPs) and fibroblast growth factors have been shown to be involved in this process, however additional factors needs to be identified for the fate determination, especially at the early stage of cardiomyogenic development. Global gene expression analysis using a series of human cells with a cardiomyogenic potential suggested Gremlin (Grem1) is a candidate gene responsible for in vitro cardiomyogenic differentiation. Grem1, a known BMP antagonist, enhanced DMSO-induced cardiomyogenesis of P19CL6 embryonal carcinoma cells (CL6 cells) 10–35 fold in an area of beating differentiated cardiomyocytes. The Grem1 action was most effective at the early differentiation stage when CL6 cells were destined to cardiomyogenesis, and was mediated through inhibition of BMP2. Furthermore, BMP2 inhibited Wnt/β-catenin signaling that promoted CL6 cardiomyogenesis. Grem1 enhances the determined path to cardiomyogenesis in a stage-specific manner, and inhibition of the BMP signaling pathway is involved in initial determination of Grem1-promoted cardiomyogenesis. Our results shed new light on renewal of the cardiovascular system using Grem1 in human.
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