Extracellular microfibrils: contextual platforms for TGFbeta and BMP signaling.

Extracellular microfibrils: contextual platforms for TGFbeta and BMP signaling.
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DOI:
10.1016/j.ceb.2009.05.005
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发表时间:
2009-10
影响因子:
7.5
通讯作者:
Rifkin DB
Rifkin DB
中科院分区:
生物学2区
文献类型:
--
作者:
Ramirez F;Rifkin DB

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细胞外基质在器官形成和组织稳态中起着关键作用。最近的研究表明,原纤维蛋白集合(微原纤维)既赋予组织完整性,又调节指示细胞性能的信号事件,并且任何功能的扰动都表现在疾病中。这些分析还表明,原纤维蛋白组装体对TGFβ和BMP信号传导具有上下文特异性。此外,相关证据表明,细胞导向的微纤维组装与TGFβ和BMP复合物靶向纤维蛋白之间存在功能耦合。因此,新出现的观点是,富含纤维蛋白的微原纤维是结构和指导性信号的分子整合者,TGFβs和bmp作为节点,将细胞外输入转化为离散的、依赖于环境的细胞反应。
The extracellular matrix plays a key role in organ formation and tissue homeostasis. Recent studies have revealed that fibrillin assemblies (microfibrils) both confer tissue integrity and regulate signaling events that instruct cell performance and that perturbation of either function manifests in disease. These analyses have also indicated that fibrillin assemblies impart contextual specificity to TGFβ and BMP signaling. Moreover, correlative evidence suggests functional coupling between cell-directed assembly of microfibrils and targeting of TGFβ and BMP complexes to fibrillins. Hence, the emerging view is that fibrillin-rich microfibrils are molecular integrators of structural and instructive signals with TGFβs and BMPs as nodal points that convert extracellular inputs into discrete and context-dependent cellular responses.
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