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首页> 外文期刊>Progress in Biophysics and Molecular Biology: An International Review Journal >Three-dimensional encapsulation of adult mouse cardiomyocytes in hydrogels with tunable stiffness
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Three-dimensional encapsulation of adult mouse cardiomyocytes in hydrogels with tunable stiffness

机译:可调谐刚度水凝胶中成人小鼠心肌细胞的三维封装

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Numerous diseases, including those of the heart, are characterized by increased stiffness due to excessive deposition of extracellular matrix proteins. Cardiomyocytes continuously adapt their morphology and function to the mechanical changes of their microenvironment. Because traditional cell culture is conducted on substrates that are many orders of magnitude stiffer than any environment encountered by a cardiomyocyte in health or disease, alternate culture systems are necessary to model these processes in vitro. Here, we employ photo-clickable thiol-ene poly(ethylene glycol) (PEG) hydrogels for three-dimensional cell culture of adult mouse cardiomyocytes. PEG hydrogels serve as versatile biocompatible scaffolds, whose stiffness can be precisely tuned to mimic physiological and pathological micro-environments. Compared to traditional culture, adult cardiomyocytes encapsulated in PEG hydrogels exhibited longer survival and preserved sarcomeric and T-tubular architecture. Culture in PEG hydrogels of varying stiffnesses regulated the subcellular localization of the mechanosensitive transcription factor, YAP, in adult cardiomyocytes, indicating PEG hydrogels offer a versatile platform to study the role of mechanical cues in cardiomyocyte biology. (C) 2019 Elsevier Ltd. All rights reserved.
机译:由于细胞外基质蛋白质过度沉积,众多疾病包括心脏的刚度增加。心肌细胞不断适应其微环境的机械变化的形态和功能。因为传统的细胞培养物在比健康或疾病中心肌细胞中遇到的任何环境逆时位的底物上进行的底物上,所以必须在体外模拟这些方法是必要的。在这里,我们采用照片可点击的硫醇-NeE聚(乙二醇)(乙二醇)水凝胶,用于成人小鼠心肌细胞的三维细胞培养物。 PEG水凝胶用作多功能生物相容性支架,其刚度可以精确地调整成模拟生理和病理微环境。与传统培养相比,封装在PEG水凝胶中的成人心肌细胞表现出较长的存活和保存的肉瘤和T型管状结构。不同刚度的PEG水凝胶中的培养调节机械敏感转录因子的亚细胞定位,yap在成人心肌细胞中,表明PEG水凝胶提供了一种多功能平台来研究机械提示在心肌细胞生物学中的作用。 (c)2019年elestvier有限公司保留所有权利。

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