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Updated: Jul 24, 2025

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祖先的葡萄糖蛋白激素受体通路控制了C.的生长. 伊莱根斯 (elegans) 是一个词

Signe Kenis¹, Majdulin Nabil Istiban¹, Sara Van Damme¹

¹Neural Signaling and Circuit Plasticity Group, Department of Biology, KU Leuven, Leuven, Belgium.

Frontiers in endocrinology

|July 6, 2023

概括

研究人员在线虫Caenorhabditis elegans中发现了一个类似于thyrostimulin的信号系统. 这条古老的途径涉及GPA2和GPB5子单元,调节生长和肠道功能,为神经内分泌进化提供了洞察力.

科学领域:

内分泌学在内分泌学.
神经内分泌学神经内分泌学
发育生物学发展生物学

背景情况:

铁激素是一种保存的葡萄糖蛋白激素,是TSH受体的配体,也是最古老的葡萄糖蛋白激素.
甲状腺刺激素子单元 (GPA2和GPB5) 的正义体在脊椎动物和无脊椎动物中发现.
甲状腺刺激素神经内分泌系统的功能在很大程度上是未被探索的.

研究的目的:

为了识别和表征一种功能性甲状腺刺激素类似的信号系统在Caenorhabditis elegans.
研究这个系统在生长和肠道功能中的作用.
为了探索进化保护和祖先功能的甲状腺刺激素信号传递.

主要方法:

在C. elegans中识别GPA2和GPB5的正方体和TRH相关的神经.
使用基因突变物对GPA2/GPB5信号通路的功能分析.
在体外测试以评估通过FSHR-1受体的cAMP信号激活.
在肠神经元中对GPA2和GPB5子单元的表达分析.

主要成果:

在C. elegans中发现了一种功能性铁激素类的神经内分泌通路,涉及GPA2,GPB5和TRH相关.
这一途径对于正常生长和身体尺寸至关重要,它通过糖蛋白激素受体正经 FSHR-1 作用.
GPA2和GPB5激活FSHR-1-介导的cAMP信号,在调节肠功能的肠神经元中表达,并在受损时引起胀气.
突变者表现出增加的排便周期.

结论:

甲状腺刺激素GPA2/GPB5通路是一个古老的肠神经内分泌系统,调节了ecdysozoans的肠功能.
这个系统可能有祖先控制的生物生长.
这项研究提供了关于糖蛋白激素信号传递和神经内分泌调节的演变的见解.

关键词:

这里是C. elegans.与G蛋白结合受体的受体是G蛋白结合的受体.葡萄糖蛋白激素激素是葡萄糖蛋白激素的一种激素.增长监管增长监管增长监管甲状腺兴奋剂是一种激素.

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