Generation of functional ventricular heart muscle from mouse ventricular progenitor cells.

Generation of functional ventricular heart muscle from mouse ventricular progenitor cells.
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DOI:
10.1126/science.1177350
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发表时间:
2009-10-16
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Chien KR
Chien KR
中科院分区:
其他
文献类型:
--
作者:
Domian IJ;Chiravuri M;van der Meer P;Feinberg AW;Shi X;Shao Y;Wu SM;Parker KK;Chien KR

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哺乳动物的心脏由第一生心区(FHF)和第二生心区(SHF)祖细胞的不同细胞群形成。尽管此前已表明多能祖细胞可产生心肌细胞、平滑肌细胞和内皮细胞,但调控大量分化后代产生的机制仍知之甚少。在此,我们采用双色荧光报告系统从发育中的小鼠胚胎和胚胎干细胞中分离出FHF和SHF祖细胞。对编码和非编码转录本进行全基因组分析揭示了这些祖细胞群的独特分子特征。我们进一步在胰岛1(Islet 1)谱系中鉴定出一种定向的心室祖细胞,它能够在体外扩增、分化并组装成功能性心室肌组织。这些结果代表了一种将组织工程与干细胞生物学相结合以生成功能性心室组织的新方法。
The mammalian heart is formed from distinct sets of first (FHF) and second (SHF) heart field progenitors. Although multipotent progenitors have been previously shown to give rise to cardiomyocytes, smooth muscle, and endothelial cells, the mechanism governing the generation of large numbers of differentiated progeny remains poorly understood. Herein, we have employed a two-colored fluorescent reporter system to isolate FHF and SHF progenitors from developing mouse embryos and embryonic stem cells. Genome wide profiling of coding and non-coding transcripts revealed distinct molecular signatures of these progenitor populations. We further identify a committed ventricular progenitor cell in the Islet 1 lineage that is capable of in vitro expansion, differentiation, and assembly into functional ventricular muscle tissue. These results represent a novel approach combining tissue-engineering with stem cell biology for the generation of functional ventricular tissue.
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