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通过在蝶Papilio xuthus中的双链RNA降解酶的淘汰来提高RNAi的效率

Qian Shu¹, Gui-Chun Liu², Jin-Wu He²

¹Yunnan Agricultural University College of Plant Protection, Kunming, Yunnan, China.

Archives of insect biochemistry and physiology

|April 17, 2024

概括

在Papilio xuthus蝶中抑制双链RNA降解酶 (dsRNases) 显著提高了RNA干扰 (RNAi) 的效率. 这一突破改善了对Lepidoptera昆虫表型创新的遗传研究.

科学领域:

昆虫学昆虫学是一门学科.
分子生物学分子生物学
遗传学遗传学是一个

背景情况:

对于研究类动物的表型创新来说,RNA干扰 (RNAi) 的效率至关重要.
已知双链RNA降解酶 (dsRNases) 影响RNAi的效率,但它们在蝶 (Papilionoidea) 中的作用仍未得到充分报道.
Papilio xuthus是蝶研究中的一个关键模型生物,具有重要的实验价值.

研究的目的:

研究dSRNase基因对蝶Papilio xuthus.RNAi效率的影响.
识别和描述P. xuthus中的dsRNase基因,并评估它们的酶活性.
通过向dSRNases,探索提高蝶RNAi效率的策略.

主要方法:

在P. xuthus基因组中鉴定了六个dsRNase基因 (PxdsRNase 1-6).
活体检测检测检测dsrna降解活性在肠道内容和血淋巴.
分析不同组织和发育阶段的PxdsRNase基因表达模式.
涉及dSRNA注射和PxdsRNase基因的基因沉默的RNAi实验.
使用记者基因 (PxEbony) 来量化RNAi效率的变化,进行RNAi的RNAi研究.

主要成果:

与血淋巴 (>12小时) 相比,肠道含量表现出较高的dsRNA降解活性 (<1小时).
PxdsRNase基因在不同的组织和发育阶段表现出不同的表达水平.
在dsGFP注射后,PxdsRNase2,PxdsRNase3和PxdsRNase6的表达显著上调.
通过注射相应的dsRNA,可以有效地静止PxdsRNase基因.
沉默PxdsRNase基因导致RNAi效率显著增加,这是记者基因测定所证明的.

结论:

dsRNase基因在Papilio xuthus.中调节RNAi效率方面发挥着至关重要的作用.
针对dSRNase基因的定向沉默提供了一种可行的策略,以提高蝶中的RNAi效率.
这些发现为具有固有低RNAi效率的昆虫,特别是蝶的功能研究提供了宝贵的参考.

关键词:

帕皮里奥·克苏图斯 (Papilio xuthus) 是一个在RNAi的效率上.dsRNA降解的降解方式在 dsRNase 中.

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