Kidney Int:肾脏正常发育的关键调控因子!

2017-09-02 MedSci MedSci原创

胚胎内缺氧是子宫内发育迟缓,出生体重低以及多器官缺陷的常见原因。在肾脏中,这可能导致肾单位减低,易患慢性肾脏疾病和动脉高血压。细胞适应缺氧的一个关键因素是缺氧诱导因子通路,其由脯氨酰-4-羟化酶结构域(PHD)双加氧酶PHD1、PHD2和PHD3调节。在成年肾脏中,PHD氧传感器以细胞类型依赖的方式差异性表达,并控制间质细胞中红细胞生成素的产生。然而,间质细胞PHD在肾脏发育中的作用尚未检查。近期

胚胎内缺氧是子宫内发育迟缓,出生体重低以及多器官缺陷的常见原因。在肾脏中,这可能导致肾单位减低,易患慢性肾脏疾病和动脉高血压。细胞适应缺氧的一个关键因素是缺氧诱导因子通路,其由脯氨酰-4-羟化酶结构域(PHD)双加氧酶PHD1、PHD2和PHD3调节。在成年肾脏中,PHD氧传感器以细胞类型依赖的方式差异性表达,并控制间质细胞中红细胞生成素的产生。然而,间质细胞PHD在肾脏发育中的作用尚未检查。近期,一项发表在杂志Kidney Int上的研究使用遗传方法在小鼠中评估了在肾发生过程中,PHD在FOXD1表达基因中的功能。此项研究证明PHD2和PHD3对于正常肾脏发育是必不可少的,因为基质PHD2和PHD3的组合灭活可以导致肾脏衰竭,其与肾脏大小减少,肾小球数量减少和出生后肾单位形成异常相关。相反,在具有单独PHD灭活的动物中,肾脏的形成是正常的。此项研究进一步表明,PHD2 / PHD3双突变体中肾单位形成的缺陷需要完整的缺氧诱导因子-2信号传导,并且依赖于基质缺氧诱导因子激活的程度。由此可见,肾间质细胞中的缺氧诱导因子脯氨酰-4-羟基化对于正常的肾单位形成至关重要。原始出处:Kobaya

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    2017-09-04 neurowu
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    2017-09-04 gwc389
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    2017-09-04 明天会更好!

    好文章.学习了!

    0

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    2017-09-02 184****9840

    学习了受益匪浅

    0

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    2017-09-02 1771ae4158m

    学习一下很不错

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