成功的口服RNA干扰效率在丝虫Bombyx mori通过纳米粒子屏蔽的dsRNA传递成功
Jisheng Liu1, Yang Yang1, Qiangjun Yang1
1School of Life Sciences, Guangzhou University, Guangzhou, China.
Journal of insect physiology
|January 15, 2025
概括
研究人员开发了基托桑纳米粒子,用于在丝虫中口服输送双链RNA (dsRNA). 这一突破使得有效的RNA干扰 (RNAi) 能够用于基因研究和潜在的虫害控制应用.
科学领域:
- 分子生物学分子生物学
- 昆虫学 昆虫学是一门学科.
- 生物技术是生物技术.
背景情况:
- RNA干扰 (RNAi) 对于基因研究和害虫控制至关重要,但它的效率在各个昆虫种群中各不相同.
- 类动物,包括模型昆虫Bombyx mori (丝虫),与类动物相比,它们的RNAi效率较低.
- 之前在丝虫中进行的RNAi研究仅限于注射方法,阻碍了口服应用.
研究的目的:
- 开发一种有效的dsrna在丝虫幼虫的口服输送方法.
- 为了研究桑/dsRNA纳米颗粒在丝虫中肠中的RNAi的稳定性和有效性.
- 通过口服RNAi探索针对免疫基因进行害虫控制的潜力.
主要方法:
- 通过自组装来制备素/dsRNA纳米粒子.
- 在丝虫中肠汁中化纳米粒子和裸体dsRNA以评估稳定性.
- 口服基托/dsRNA纳米颗粒,以向丝幼虫的免疫基因.
- 基因淘汰的量化和表型变化的评估 (幼虫/的大小).
主要成果:
- 素/dsRNA纳米颗粒在丝虫中肠汁中表现出稳定性,与裸体dsrna不同,dsrna会降解.
- 纳米颗粒的口服给药导致了针对性免疫基因的显著基因转录敲击.
- 用针对BmToll9-2的纳米颗粒养的丝虫显示了幼虫和子大小的减少.
- 由于纳米粒子屏蔽,优化的纳米粒子保持了3-5天的RNAi效应.
结论:
- 这项研究报告了第一个在丝虫 (Bombyx mori) 中成功的口服RNAi.
- 基托/dsRNA纳米颗粒提供了一种稳定有效的方法,用于类虫的口服dsRNA输送.
- 使用口服RNAi向免疫基因,为昆虫害虫控制提供了一个有前途的战略.
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