在Culex quinquefasciatus中含有硫的蛋白TEP27通过调节宿主免疫功能来促进JEV感染
Yutian Huang1, Yuwei Liu1, Rongrong Li1
1Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
International journal of molecular sciences
|December 11, 2025
概括
昆虫拥有独特的含蛋白质 (TEP),这些蛋白质有助于日本脑炎病毒 (JEV) 感染. 准CqTEP27提供了一种新的策略,可以通过蚊子疫苗接种防止JEV的传播.
科学领域:
- 免疫学 免疫学 免疫学
- 载体传播疾病 载体传播疾病
- 分子生物学分子生物学
背景情况:
- 含有铁的蛋白质 (TEP) 对于关节动物的免疫力至关重要.
- 在Culex蚊子中的TEP功能,特别是关于病毒感染的功能,尚不清楚.
- 之前的研究重点是TEPs在Anopheles,Aedes和Drosophila.
研究的目的:
- 调查TEPs在Culex quinquefasciatus免疫力中对日本脑炎病毒 (JEV) 的作用.
- 为了确定促进JEV感染的特定TEPs在Culex蚊子.
- 探索CqTEP27作为控制JEV传播的潜在目标.
主要方法:
- 在Culex quinquefasciatus中识别和表征TEP基因.
- 评估已识别的TEP对JEV感染的前病毒性影响.
- 研究CqTEP27的前病毒性活性机制,包括其对抗微生物 (AMP) 的影响.
- 评估抗CqTEP27抗菌剂在减少蚊子感染率方面的疗效.
主要成果:
- 在Culex quinquefasciatus中发现了9个TEP基因.
- 发现三个TEP基因显著促进了JEV感染.
- CqTEP27显示出最强的前病毒效应,可能通过抑制AMP的产生和增加JEV复制.
- 通过膜血液食的抗CqTEP27抗菌剂的使用显著降低了蚊子感染率.
结论:
- 库莱克斯TEPs,特别是CqTEP27,在JEV感染中起着前病毒作用,与其在其他关节动物中已知的免疫功能形成鲜明对比.
- CqTEP27是一个关键的易感因子,可以针对控制JEV.
- 针对CqTEP27的疫苗接种提供了一个可行的策略,通过防止蚊子在免疫宿主上食的蚊子感染,来破坏JEV的传播.
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