一种母性基因调节器CPEB2参与了Cnaphalocrocis medinalis中的交配诱导的卵子成熟
Yi Duan1,2, Yueran Xiao1,2, Guo Cai1,2
1Department of Entomology, Nanjing Agricultural University, Nanjing 211800, China.
Insects
|July 29, 2025
概括
细胞质多基化元素结合蛋白2 (CmCPEB2) 调节米叶滚轮的交配诱导的产卵. 它控制卵黄的产生和蛋的形成,受青春激素的影响.
科学领域:
- 分子生物学分子生物学
- 发展生物学 发展生物学
- 昆虫的繁殖 昆虫的繁殖
背景情况:
- 细胞质多基化元素结合蛋白 (CPEBs) 调节母体mRNA的翻译.
- 它们在昆虫繁殖中的作用,特别是在Lepidoptera中,尚不清楚.
- 了解这些作用对于害虫管理策略至关重要.
研究的目的:
- 在米叶滚筒中描述CmCPEB2,米叶滚筒,Cnaphalocrocis medinalis.
- 阐明CmCPEB2在交配诱导的卵位中的功能.
- 调查控制CmCPEB2表达和功能的监管机制.
主要方法:
- 遗传学分析和蛋白质域识别CmCPEB2.
- *CmCPEB2*转录的时空表达概况.
- 脂质体介导的RNA干扰 (RNAi) 来击倒*CmCPEB2*表达.
- 用RNAi处理的卵巢的转录组分析.
- 使用组织培养和操纵青春期激素 (JH) 信号通路的激素测定.
主要成果:
- CmCPEB2具有保留的RNA结合域和集群,具有类类的ortologs.
- *CmCPEB2*表达在交配后的卵巢显著增加.
- 通过RNAi介导的*CmCPEB2*的淘汰会影响卵巢成熟,维特洛根因沉积和降低生育能力.
- 转录组分析显示,CmCPEB2调节了参与胆管形成和上皮细胞发育的基因.
- *CmCPEB2*表达是由青春激素诱导的,并通过对JH响应的转录因子*CmKr*-h1.1的敲击来抑制.
结论:
- CmCPEB2是C. medinalis*中交配诱导的卵置的关键调节者.
- 它在编排维生 (黄蛋白合成和沉积) 和胆生 (蛋形成) 中起着双重作用.
- CmCPEB2 作为青春期的荷尔蒙依赖因子,将荷尔蒙信号与虫的繁殖过程联系起来.
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