肌成纤维细胞
成纤维细胞
生物
伤口愈合
细胞生物学
心脏纤维化
转录组
癌症研究
纤维化
病理
免疫学
基因表达
细胞培养
遗传学
医学
基因
作者
Darrian Bugg,Logan R.J. Bailey,Ross C Bretherton,Kathy Beach,Isabella M. Reichardt,Kalen Z Robeson,Anna C Reese,Jagadambika J. Gunaje,Galina Flint,Cole A. DeForest,April Stempien‐Otero,Jennifer Davis
出处
期刊:Cell Stem Cell
[Elsevier]
日期:2022-03-01
卷期号:29 (3): 419-433.e10
被引量:24
标识
DOI:10.1016/j.stem.2022.01.012
摘要
Dynamic fibroblast to myofibroblast state transitions underlie the heart's fibrotic response. Because transcriptome maturation by muscleblind-like 1 (MBNL1) promotes differentiated cell states, this study investigated whether tactical control of MBNL1 activity could alter myofibroblast activity and fibrotic outcomes. In healthy mice, cardiac fibroblast-specific overexpression of MBNL1 transitioned the fibroblast transcriptome to that of a myofibroblast and after injury promoted myocyte remodeling and scar maturation. Both fibroblast- and myofibroblast-specific loss of MBNL1 limited scar production and stabilization, which was ascribed to negligible myofibroblast activity. The combination of MBNL1 deletion and injury caused quiescent fibroblasts to expand and adopt features of cardiac mesenchymal stem cells, whereas transgenic MBNL1 expression blocked fibroblast proliferation and drove the population into a mature myofibroblast state. These data suggest MBNL1 is a post-transcriptional switch, controlling fibroblast state plasticity during cardiac wound healing.
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