Heart repair by reprogramming non-myocytes with cardiac transcription factors.

Heart repair by reprogramming non-myocytes with cardiac transcription factors.
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通过对心脏转录因子的非肌细胞进行重编程通过重编程。

DOI:
10.1038/nature11139
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发表时间:
2012-05-13
期刊:
影响因子:
64.8
通讯作者:
Olson, Eric N.
Olson, Eric N.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Song, Kunhua;Nam, Young-Jae;Luo, Xiang;Qi, Xiaoxia;Tan, Wei;Huang, Guo N.;Acharya, Asha;Smith, Christopher L.;Tallquist, Michelle D.;Neilson, Eric G.;Hill, Joseph A.;Bassel-Duby, Rhonda;Olson, Eric N.

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成年哺乳动物的心脏在受伤后几乎没有再生潜力。心脏成纤维细胞激活导致的纤维化会阻碍心脏再生,并导致收缩功能丧失、病理重塑和心律失常易感性。心脏成纤维细胞占心脏中的大部分细胞,是损伤后通过表型重编程心肌细胞命运来恢复心脏功能的潜在细胞来源。在这里,我们发现四种转录因子 GATA4、Hand2、MEF2C 和 Tbx5 可以在体外协同地将成年小鼠尾尖和心脏成纤维细胞重编程为跳动的心脏样肌细胞。在小鼠分裂中的非心肌细胞中强制表达这些因子可将这些细胞重新编程为功能性心脏样肌细胞,改善心脏功能并减少心肌梗塞后的不良心室重塑。我们的结果提出了一种通过用心原性转录因子或其他分子对心脏中的成纤维细胞进行重编程来修复心脏的策略。
The adult mammalian heart possesses little regenerative potential following injury. Fibrosis due to activation of cardiac fibroblasts impedes cardiac regeneration and contributes to loss of contractile function, pathological remodeling and susceptibility to arrhythmias. Cardiac fibroblasts account for a majority of cells in the heart and represent a potential cellular source for restoration of cardiac function following injury through phenotypic reprogramming to a myocardial cell fate. Here we show that four transcription factors, GATA4, Hand2, MEF2C and Tbx5 can cooperatively reprogram adult mouse tail-tip and cardiac fibroblasts into beating cardiac-like myocytes in vitro. Forced expression of these factors in dividing non-cardiomyocytes in mice reprograms these cells into functional cardiac-like myocytes, improves cardiac function and reduces adverse ventricular remodeling following myocardial infarction. Our results suggest a strategy for cardiac repair through reprogramming fibroblasts resident in the heart with cardiogenic transcription factors or other molecules.
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