Live imaging molecular changes in junctional tension upon VE-cadherin in zebrafish.

Live imaging molecular changes in junctional tension upon VE-cadherin in zebrafish.
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DOI:
10.1038/s41467-017-01325-6
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发表时间:
2017-11-10
影响因子:
16.6
通讯作者:
Hogan BM
Hogan BM
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lagendijk AK;Gomez GA;Baek S;Hesselson D;Hughes WE;Paterson S;Conway DE;Belting HG;Affolter M;Smith KA;Schwartz MA;Yap AS;Hogan BM

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力在血管发育、稳态和疾病中起着不同的作用。内皮细胞-细胞连接处的VE-钙粘蛋白连接相邻细胞的收缩性肌动蛋白-肌球蛋白细胞骨架,充当张力传感器。为了探索活斑马鱼中VE-钙粘蛋白的张力变化,我们定制了一种最初在体外建立的光学生物传感器方法。我们在体内验证VE-钙粘蛋白张力传感器(TS)的定位和功能。使用比率度量或寿命FRET测量观察到的VE-钙粘蛋白张力变化反映了内皮细胞内的肌动蛋白-肌球蛋白收缩性。此外,我们应用TS揭示VE-钙粘蛋白张力的生物学相关变化,发生在背主动脉成熟和胚胎发育过程中的遗传和化学扰动。机械力在形态发生过程中起着至关重要的作用,但这些在体内是如何被感知和转导的还没有完全了解。在这里,作者将FRET张力传感器应用于活斑马鱼,并研究动脉成熟过程中内皮细胞-细胞连接处VE-钙粘蛋白张力的变化。
Forces play diverse roles in vascular development, homeostasis and disease. VE-cadherin at endothelial cell-cell junctions links the contractile acto-myosin cytoskeletons of adjacent cells, serving as a tension-transducer. To explore tensile changes across VE-cadherin in live zebrafish, we tailored an optical biosensor approach, originally established in vitro. We validate localization and function of a VE-cadherin tension sensor (TS) in vivo. Changes in tension across VE-cadherin observed using ratio-metric or lifetime FRET measurements reflect acto-myosin contractility within endothelial cells. Furthermore, we apply the TS to reveal biologically relevant changes in VE-cadherin tension that occur as the dorsal aorta matures and upon genetic and chemical perturbations during embryonic development. Mechanical forces play a crucial role during morphogenesis, but how these are sensed and transduced in vivo is not fully understood. Here the authors apply a FRET tension sensor to live zebrafish and study changes in VE-cadherin tension at endothelial cell-cell junctions during arterial maturation.
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发表时间: 2016-01-01
影响因子: 3.3
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发表时间: 2012-06-01
影响因子: 4.4
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