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αV 整合素和 TGF-β 诱导的 EMT:调控循环。

aV integrins and TGF-β-induced EMT: a circle of regulation.

机构信息

Department of Biological Sciences, University of Delaware, Newark, DE, USA.

出版信息

J Cell Mol Med. 2012 Mar;16(3):445-55. doi: 10.1111/j.1582-4934.2011.01419.x.

Abstract

Transforming growth factor-β (TGF-β) has roles in embryonic development, the prevention of inappropriate inflammation and tumour suppression. However, TGF-β signalling also regulates pathological epithelial-to-mesenchymal transition (EMT), inducing or progressing a number of diseases ranging from inflammatory disorders, to fibrosis and cancer. However, TGF-β signalling does not proceed linearly but rather induces a complex network of cascades that mutually influence each other and cross-talk with other pathways to successfully induce EMT. Particularly, there is substantial evidence for cross-talk between αV integrins and TGF-β during EMT, and anti-integrin therapeutics are under development as treatments for TGF-β-related disorders. However, TGF-β's complex signalling network makes the development of therapeutics to block TGF-β-mediated pathology challenging. Moreover, despite our current understanding of integrins and TGF-β function during EMT, the precise mechanism of their role during physiological versus pathological EMT is not fully understood. This review focuses on the circle of regulation between αV integrin and TGF-β signalling during TGF-β induced EMT, which pose as a significant driver to many known TGF-β-mediated disorders.

摘要

转化生长因子-β(TGF-β)在胚胎发育、预防炎症失调和肿瘤抑制中发挥作用。然而,TGF-β 信号通路也调节病理性上皮间质转化(EMT),引发或促进多种疾病,包括炎症性疾病、纤维化和癌症。然而,TGF-β 信号通路并非线性进行,而是诱导一个复杂的级联网络,这些级联网络相互影响,并与其他途径进行交叉对话,以成功诱导 EMT。特别是,在 EMT 过程中,αV 整合素和 TGF-β 之间存在大量的交叉对话证据,抗整合素治疗正在开发中,作为 TGF-β 相关疾病的治疗方法。然而,TGF-β 复杂的信号网络使得开发阻断 TGF-β 介导的病理学的治疗方法具有挑战性。此外,尽管我们目前了解整合素和 TGF-β 在 EMT 过程中的功能,但它们在生理 EMT 与病理 EMT 中的作用的确切机制尚未完全了解。这篇综述重点关注 TGF-β 诱导的 EMT 过程中 αV 整合素和 TGF-β 信号之间的调节循环,这是许多已知的 TGF-β 介导的疾病的重要驱动因素。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f918/3822922/fd77c075fda7/jcmm0016-0445-f1.jpg

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