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为什么细胞应激会抑制骨骼组织中的脂肪生成,但在脂肪组织中无效:通过细胞外基质中的整合素结合位点控制间充质细胞分化。

Why cellular stress suppresses adipogenesis in skeletal tissue, but is ineffective in adipose tissue: control of mesenchymal cell differentiation via integrin binding sites in extracellular matrices.

机构信息

Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA.

出版信息

Matrix Biol. 2013 Oct-Nov;32(7-8):365-71. doi: 10.1016/j.matbio.2013.06.001. Epub 2013 Jun 18.

Abstract

This Perspective addresses one of the major puzzles of adipogenesis in adipose tissue, namely its resistance to cellular stress. It introduces a concept of "density" of integrin binding sites in extracellular matrix, proposes a cellular signaling explanation for the observed effects of matrix elasticity and of cell shape on mesenchymal stem cell differentiation, and discusses how specialized integrin binding sites in collagen IV-containing matrices guard two pivotal physiological and evolutionary processes: stress-resistant adipogenesis in adipose tissues and preservation of pluripotency of mesenchymal stem-like cells in their storage niches. Finally, it proposes strategies to suppress adipogenesis in adipose tissues.

摘要

这篇观点文章探讨了脂肪组织中脂肪生成对细胞应激的抗性这一主要难题之一。它介绍了细胞外基质中整合素结合位点“密度”的概念,提出了细胞信号转导解释,以说明基质弹性和细胞形状对间充质干细胞分化的观察到的影响,并讨论了富含胶原 IV 的基质中的特殊整合素结合位点如何保护两个关键的生理和进化过程:脂肪组织中抗应激性脂肪生成和间充质干细胞样细胞在其储存龛中的多能性的保存。最后,它提出了抑制脂肪组织中脂肪生成的策略。

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The extracellular microscape governs mesenchymal stem cell fate.细胞外微环境决定间充质干细胞的命运。
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本文引用的文献

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METABOLIC FUNCTIONS OF MYOSTATIN AND GDF11.肌肉生长抑制素和生长分化因子11的代谢功能
Immunol Endocr Metab Agents Med Chem. 2010 Dec;10(4):217-231. doi: 10.2174/187152210793663810.

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