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首页> 外文期刊>Cell biology international. >FACTORS INFLUENCING MYOFIBROBLAST DIFFERENTIATION DURING WOUND HEALING AND FIBROSIS [Review]
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FACTORS INFLUENCING MYOFIBROBLAST DIFFERENTIATION DURING WOUND HEALING AND FIBROSIS [Review]

机译:伤口愈合和纤维化过程中影响肌成纤维细胞分化的因素[综述]

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摘要

Granulation tissue fibroblasts (myofibroblasts) develop several ultrastructural and biochemical features of smooth muscle (SM) cells, including the presence of microfilaments bundles and the expression of alpha-SM actin, the actin isoform typical of contractile vascular SM cells. Myofibroblasts have been suggested to play a role in wound contraction and in retractile phenomena observed during fibrotic diseases. When granulation tissue evolves into a scar, myofibroblasts containing alpha-SM actin disappear, probably as a result of apoptosis. In contrast, myofibroblasts expressing alpha-SM actin persist in excessive scarring and in fibrotic conditions. The mechanisms leading to the development of myofibroblastic features remain to be investigated. Studies on the factors regulating the phenotype of myofibroblasts will be necessary for understanding their behavior in vivo, and possibly modifying this behavior during the different clinical settings.
机译:肉芽组织成纤维细胞(肌成纤维细胞)发展出平滑肌(SM)细胞的一些超微结构和生化特征,包括微丝束的存在和α-SM肌动蛋白的表达,α-SM肌动蛋白是收缩性血管SM细胞的典型肌动蛋白亚型。已经提出了肌成纤维细胞在伤口收缩和纤维化疾病期间观察到的回缩现象中起作用。当肉芽组织演变成疤痕时,含有α-SM肌动蛋白的成肌纤维细胞可能消失,这可能是细胞凋亡的结果。相反,表达α-SM肌动蛋白的成肌纤维细胞在过度瘢痕形成和纤维化条件下持续存在。导致肌纤维母细胞特征发展的机制仍有待研究。研究调节成纤维细胞表型的因素对于了解它们在体内的行为,并可能在不同的临床环境中改变这种行为是必要的。

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