Am J Respir Cell Mol Biol:研究揭示新的揭示了肺发育的分子机制

2020-05-25 MedSci原创 MedSci原创

TAZ(具有PDZ结合基序的转录共激活因子)和YAP(是相关蛋白)是Hippo途径的关键分子。最近的研究表明,这些分子对于肺部发育至关重要。然而,涉及这些分子的精确信号传导级联及其在肺发育过程中作用的

TAZ(具有PDZ结合基序的转录共激活因子)和YAP(是相关蛋白)是Hippo途径的关键分子。最近的研究表明,这些分子对于肺部发育至关重要。然而,涉及这些分子的精确信号传导级联及其在肺发育过程中作用的差异仍然未知。我们旨在研究使用肺上皮特异性Taz和Yap条件性剔除小鼠的YAP和TAZ功能。

 

我们生成了肺上皮特异性Taz和Yap条件性基因敲除小鼠,并研究了YAP和TAZ在肺发育中的功能。成年小鼠肺上皮细胞中选择性TAZ缺乏会导致异常肺泡化,从而模仿肺气肿,而YAP缺乏会导致胚胎期支气管形态发生中断。我们报告说,TAZ和YAP在肺中顺序表达,这可以解释它们的不同表型。此外,我们报告说,YAP刺激Shh(音速刺猬)的表达并调节FGF(成纤维细胞生长因子)-SHH反馈回路,从而有助于正常的支气管形态发生。我们还发现,TGF-β(转化生长因子-β)刺激诱导了Shh在肺上皮细胞中的表达,而TAZ和YAP在这一新途径中都是必不可少的。

 

总之,我们的结果提供了一种新的洞察力,揭示了肺发育的分子机制,并有助于更好地了解TAZ和YAP的特征。

 

原始出处:

 

Hideaki IsagoAkihisa Mitani, et al., Epithelial Expression of YAP and TAZ Is Sequentially Required in Lung Development. Am J Respir Cell Mol Biol. 2020 Feb;62(2):256-266. doi: 10.1165/rcmb.2019-0218OC.

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    2020-06-25 维他命
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    2021-04-02 sunylz
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    2020-05-27 neurowu
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    2020-05-25 肿肿

    机制研究离临床仍然有距离,不过与临床结合思考,仍然有帮助的,不能仅仅是纯临床思维,转化思维同样重要

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