鱼基因在Hemiptera Rhodnius prolixus中卵细胞发育过程中的中心作用
Agustina Pascual1, Catalina Taibo2, Rolando Rivera-Pomar3
1Centro de BioInvestigaciones (CeBio‑CICBA), Universidad Nacional del Noroeste de la Provincia de Buenos Aires (UNNOBA), Pergamino, Argentina; Centro de Investigaciones y Transferencias del Noroeste de la Provincia de Buenos Aires (CITNOBA‑CONICET), Pergamino, Argentina.
Journal of insect physiology
|November 3, 2024
概括
鱼 (sqd) 基因产物Rp-sqd对于Rhodnius prolixus的卵细胞发育和生育至关重要. 它的耗尽破坏了卵细胞的极性,轴形成和生殖器的完整性,导致女性不育.
科学领域:
- 发展生物学 发展生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 卵细胞极性建立对于胚胎发育至关重要,依赖于母体因子局部化.
- 众所周知,由鱼 (sqd) 基因编码的异质核核核糖核蛋白 (hnRNP) 参与了Drosophila的mRNA定位和轴建立.
- 在Rhodnius prolixus中确定了sqd基因的同类物,促使对其功能进行了调查.
研究的目的:
- 研究Rhodnius prolixus鱼同类物 (Rp-sqd) 在 oogenesis 和早期胚胎发育过程中的功能.
- 了解Rp-sqd在维持卵细胞极性,生育能力和生殖器完整性的作用.
主要方法:
- 进行比较基因组学以识别Rp-sqd.
- 父母RNA干扰 (RNAi) 来消耗Rp-sqd.
- 卵巢剖析,免疫染色和显微镜分析卵细胞发育和细胞结构.
- 母亲mRNAs的转录表达分析.
主要成果:
- Rp-sqd在卵巢生殖细胞和生长卵细胞的细胞质中持续表达.
- 通过RNAi的Rp-sqd耗尽导致女性不育,卵细胞发育中断,卵泡上皮质混乱,并损害了护士细胞完整性.
- 显微镜检测显示了微管乱,以及食物系中有机器的减少.
- Rp-sqd的枯竭影响了参与亡,轴形成, oogenesis 和细胞骨维护的母性mRNA的表达.
结论:
- 在Rhodnius prolixus oogenesis中,Rp-sqd起着至关重要的性作用,影响生育能力,生殖器完整性,卵细胞发育和轴形成.
- 这些发现提供了关于昆虫 oogenesis 和繁殖过程的遗传基础的见解.
- 在卵细胞发育过程中,RP-sqd对于维持细胞组织和母体因子调节至关重要.
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