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PDMS培养对干细胞分化对最终内皮和肝细胞的影响

Christopher T Clark¹, Yao Wang¹, Devin C Johnson²

¹Department of Chemical and Biomolecular Engineering, University of California, Irvine 92697, USA; Sue & Bill Gross Stem Cell Research Center, University of California, Irvine 92697, USA.

Acta biomaterialia

|May 9, 2025

概括

机械线索影响人类诱导的多能干细胞分化,用于肝病治疗. 软环境增强了原始细胞的特异性和肝细胞的功能,进步了再生医学.

科学领域:

干细胞生物学干细胞生物学
再生医学是一种再生医学.
机械生物学机械生物学

背景情况:

人类诱导的多能干细胞 (hiPSCs) 为再生医学提供了希望,特别是通过肝细胞移植治疗肝病.
功能性hiPSC衍生的肝细胞与成熟标记物的有效分化仍然是一个挑战.
在hiPSC分化的早期机械感知机制对于改善治疗结果至关重要.

研究的目的:

研究在内皮特异化过程中的机械线索如何影响hiPSC分化到肝细胞.
探索细胞骨和机械转导途径在这个过程中的作用.

主要方法:

在粘性弹性2D基板 (PDMS) 上调节细胞骨和培养.
定量实时PCR (qRT-PCR),免疫光染色和功能分析.
对actomyosin和Yes相关蛋白 (YAP) 信号通路的研究.

主要成果:

机械线索,特别是软环境,偏差hiPSC内皮规格.
这个过程依赖于actomyosin和YAP信号传递.
软基质改善了原始细胞的特异性和下游肝细胞的功能.

结论:

机械信号是胚胎层规范和干细胞分化的关键调节者.
优化机械环境可以提高hiPSC衍生的肝细胞的效率和功能,用于再生医学.
这些发现为发展过程和治疗应用中的机械传导提供了新的见解.

关键词:

诱导的多能干细胞干细胞肝脏组织工程肝脏组织工程机械感应感应机械感应在PDMS中使用PDMS.基板的刚性基板的刚性

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iPS Cell Differentiation

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The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.