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阴性性腺体中的胰岛素信号活动控制了通过C. elegans的生殖线进入C. elegans的时间

Grace E Przybyl¹, Julia Wittes¹, Iva Greenwald¹

¹Department of Biological Sciences, Columbia University, 1212 Amsterdam Avenue, New York, NY 10027, USA.

Current biology : CB

|July 17, 2025

概括

在C. elegans中,体性性腺体中的低胰岛素/IGF信号传递 (IIS) 触发了 dauer diapause. 生殖线与体质性腺合作,揭示了它在调节发育中的作用.

科学领域:

发展生物学发展生物学
内分泌学在内分泌学.
遗传学是一个遗传学.

背景情况:

C. elegans表现出发育可塑性,在生殖发育和基于环境线索的时间间隔之间进行切换.
胰岛素/胰岛素生长因子信号传导 (IIS) 途径,涉及DAF-2,AKT和DAF-16/FoxO,是这种发育决策的关键调节者.
之前的研究表明,IIS在细胞进入调节中具有扩散的细胞作用.

研究的目的:

为了确定IIS在C. elegans中调节dauer进入的特定细胞焦点.
为了调查体质性腺体和生殖系在 dauer diapause 决定中的作用.

主要方法:

基因操纵是为了改变特定于体性性腺体的IIS活性.
激光切除生殖线前体的激光切除,以评估它们在生殖过程中的作用.
观察和分析发育过渡的反应,以实验性扰乱.

主要成果:

具体而言,体性性腺体中IIS活动的减少足以诱导 dauer diapause.
在体性性腺体中DAF-2的耗尽会导致DAF-2的进入,而DAF-2则通过生殖线前体消去而被抑制.
阴性性腺和生殖线一起作为一个信号连接点来控制生殖过程的形成.

结论:

阴性性腺作为一个内分泌器官,调节关键的生命历史决策.
生殖线在通过与体性性腺体的相互作用来协调全球体质发育中起着意想不到但至关重要的作用.
这项研究完善了我们对IIS功能的理解,精确地确定了一种特定的组织,并揭示了发育可塑性中的新型生殖系-soma相互作用.

关键词:

援助援助援助援助在 AKT AKT 里面.这里是C. elegans.一个Daf-16一个DAF-16 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 戴尔·杜埃尔 (Dauer Duer) 是一个著名的作家.隔膜休息时间细菌线的生殖线戈纳德 (Gonad) 是一个胰岛素的信号传递方式

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