在Caenorhabditis elegans中DAF-2/INSR普遍存在的发育和条件调节
Ivan B Falsztyn1, Seth M Taylor1, L Ryan Baugh1,2
1Department of Biology, Duke University, Durham, NC 27708, USA.
bioRxiv : the preprint server for biology
|June 10, 2024
概括
胰岛素/IGF信号传递 (IIS) 是通过CHIP依赖的DAF-2受体的无化来动态调节的. 这种规则因发育阶段,温度和营养物质的可用性而异,显示出复杂的IIS控制.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 遗传学 遗传学 是一个
背景情况:
- 胰岛素/IGF信号传递 (IIS) 是物种间生长,新陈代谢和衰老的关键调节者.
- 已知胰岛素/IGF受体 (C. elegans*中的DAF-2) 的稳定性和活性是由无处不在调节的.
- 芯片 (芯片依赖的无处不在) 涉及调节DAF-2稳定性和IIS活动.
研究的目的:
- 通过CHIP依赖的无所不在来研究胰岛素/IGF信号 (IIS) 的动态调节.
- 探索DAF-2受体泛化对不同发育阶段,温度和营养条件的影响如何变化.
- 阐明控制IIS活动的新型监管机制.
主要方法:
- 利用*C. elegans*的基因操纵,包括破坏*chn-1/CHIP*基因和分析特定的DAF-2无处不在位点突变等位基因 (*daf-2(gk390525) *).
- 在各种条件下 (幼虫与成人的阶段,不同的温度,营养的可用性) 评估了IIS活动和发育表型 (例如,生命形成).
- 通过CHN-1/CHIP研究了DAF-2受体的无化状态.
主要成果:
- 破坏 *chn-1/CHIP* 会增加成年 *C. elegans* 的 DAF-2 丰度和 IIS 活性,从而减少寿命.
- *daf-2(gk390525) *基因基因表现出上下文依赖的IIS活动,在幼虫中显示功能丧失,但在成年人中显示功能获取,并且在发育过程中显示其影响过渡.
- 这种等位基因的功能进一步受到温度的调节,在高温下抑制了温度依赖的 dauer 形成,而 *chn-1/CHIP* 干扰增加了饥饿的 L1 幼虫中的 IIS 活性.
结论:
- 对于负IIS调节的DAF-2无处不在部位的功能相关性是高度动态的,在幼虫和成年阶段之间有很大差异.
- IIS监管进一步由温度和营养素可用性等环境因素分层,表明复杂的,取决于环境的控制机制.
- 这些发现揭示了管理胰岛素/IGF信号的调节层,突出了受体修饰和发育可塑性之间的复杂相互作用.
关键词:
C. 优雅的 优雅的这就是CHIP CHIP.在DAF-2中,它是DAF-2.国际货币基金组织 (IGF) 是一个国际货币基金组织.L1 逮捕 逮捕 逮捕在这种情况下,胰岛素胰岛素胰岛素.饥饿 饥饿 饥饿 饥饿 饥饿在任何地方都是无处不在的.更多相关视频
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