Blood:血小板通过Clec-2与平足蛋白相互作用调节肺发育

2018-06-02 MedSci MedSci原创

中心点:血小板Clec-2与淋巴平足蛋白通过促进肥胖成纤维细胞分化协同调节肺发育。肺泡管成纤维细胞分化在一定程度上受血小板被Clec-2/平足蛋白相互作用激活释放TGF-β调节。摘要:血小板不仅仅参与血栓形成和止血,还参与其他的病理生理过程,包括肿瘤转移和炎症。但是,血小板在固体器官发育中是否发挥作用尚不明确。近日,Blood杂志上发表一篇文章,研究人员发现血小板可通过血小板激活受体(C型凝集素样

中心点:

血小板Clec-2与淋巴平足蛋白通过促进肥胖成纤维细胞分化协同调节肺发育。

肺泡管成纤维细胞分化在一定程度上受血小板被Clec-2/平足蛋白相互作用激活释放TGF-β调节。

摘要:

血小板不仅仅参与血栓形成和止血,还参与其他的病理生理过程,包括肿瘤转移和炎症。但是,血小板在固体器官发育中是否发挥作用尚不明确。近日,Blood杂志上发表一篇文章,研究人员发现血小板可通过血小板激活受体(C型凝集素样受体2[Clec-2;由Clec1b编码])及其配体(平足蛋白,一种膜蛋白)之间的相互作用调节肺发育。

敲除小鼠血小板的Clec-2可导致肺畸形,进而导致呼吸衰竭和新生鼠死亡。在这些胚胎中,初级肺泡隔中缺失α平滑肌动蛋白阳性的肺泡管成纤维细胞(adMYFs),导致缺乏肺泡弹性纤维和肺畸形。

本研究结果提示adMYFs缺乏是由非间皮细胞(luMCs),adMYFs的祖细胞,分化异常导致的。在发育的肺的肺泡上皮细胞(AECs)、luMCs和淋巴内皮细胞(LECs)上可检测到平足蛋白表达。LEC特异性敲除平足蛋白小鼠表现为新生鼠致死和Clec1b-/-样肺发育异常。除此之外,Clec1b-/-样肺异常还可在血小板减少症或TGF-β敲除的胎鼠中观察到。

综上所述,研究人员认为血小板上的Clec-2与LECs上的平足蛋白相互作用通过TGF-β信号刺激luMCs分化成adMYF,从而调节肺正常发育。

原始出处:

Nagaharu Tsukiji,et al.Platelets play an essential role in murine lung development through Clec-2/podoplanin interaction. Blood  2018  :blood-2017-12-823369;  doi: https://doi.org/10.1182/blood-2017-12-823369

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    2018-06-04 neurowu
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    2018-06-04 ylz8405
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    2018-06-03 1e1b8538m79(暂无匿称)

    不错的文章值得拥有哦

    0

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    2018-06-02 惠映实验室

    学习了.谢谢分享.

    0

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