在北极海绵 (Porifera) 中,多巴胺介导的细胞可塑性的进化保存
Oksana I Kravchuk1, Alexander D Finoshin1, Yulia O Nikishina1
1N. K. Koltsov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, Russia.
Frontiers in molecular biosciences
|December 3, 2025
概括
多巴胺通过基因表达和蛋白质修饰调节海绵中的细胞可塑性. 这项研究揭示了多巴胺.
科学领域:
- 进化生物学是进化的生物学.
- 海洋生物学 海洋生物学
- 生物化学 生物化学
背景情况:
- 多巴胺是动物神经系统中的关键信号分子,但它在海绵等早期分支动物中的作用尚不清楚.
- 北极海绵表现出生理可塑性,使它们成为研究保存应激反应的合适模型.
- 了解海绵中多巴胺的功能可以揭示其在动物细胞调节中的古老作用.
研究的目的:
- 为了研究两种北极海绵物种Sycon ciliatum和Halisarca dujardini的多巴胺信号通路和功能.
- 探索多巴胺合成,循环和后翻译性修改在非双边动物的机制.
- 确定多巴胺在调节海绵细胞可塑性和结构重塑中的作用.
主要方法:
- 采用了包括元基因组学和转录组学在内的多组学方法.
- 使用高性能液态色谱,质谱和分子对接.
- 进行了免疫光学,以可视化蛋白质局部化和多巴化.
主要成果:
- 状从L-DOPA中合成多巴胺,而Halisarca dujardini则通过共生体可能积累多巴胺.
- 在海绵发育过程中观察到的多巴胺循环酶和G蛋白结合受体 (GPCR) 的动态基因表达.
- 第一个证据表明,细胞骨蛋白质的翻译后多巴化发生在非双质细胞中,与结构变化相关.
结论:
- 多巴胺通过转录和后翻译机制调节海绵细胞的可塑性.
- 在海绵中多巴胺化扩大了已知的进化范围的catecholamine信号传递.
- 强调多巴胺在调节动物细胞相互作用和可塑性方面的古老作用.
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