蚊子载体的并行进化 - - 一个重复的雌激酶位点与An.的pirimiphos-methyl耐药性有关. 冈比亚 冈比亚
Sanjay C Nagi1, Eric R Lucas1, Alexander Egyir-Yawson2
1Department of Vector Biology, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, L3 5QA, UK.
bioRxiv : the preprint server for biology
|February 14, 2024
概括
非洲疟疾蚊子 (Anopheles gambiae) 的抗杀虫剂耐药性是一个越来越令人担忧的问题. 这项研究确定了对皮里米-甲基的新型耐药性机制,由排毒酶基因进化和副本数量变化驱动.
科学领域:
- 基因组学就是基因组学.
- 载体生物学 载体生物学
- 分子昆虫学分子昆虫学
背景情况:
- 杀虫剂干预是控制非洲疟疾蚊子Anopheles gambiae的主要工具.
- 新兴的抗杀虫剂耐药性对疟疾控制计划构成重大威胁.
- 有机酸盐的pirimiphos-methyl被广泛使用,但已经观察到耐药性.
研究的目的:
- 确定Anopheles gambiae.中皮里米-甲基耐药性的新型机制.
- 研究种群基因组学在理解抗虫剂耐药性演变中的作用.
- 在蚊子群体中探索并行进化和适应性侵入的实例.
主要方法:
- 对Anopheles gambiae s.l. 的种群基因组分析 人口. 人口. 人口.
- 在排毒酶基因位点识别选择信号.
- 现型蚊子的全基因组测序和双型集.
主要成果:
- 在含有排毒酶的位点检测到显著的选择信号,包括α-酶Coeae1f和Coeae2f.
- 在这个位置的副本数量变化似乎有助于抗昆虫剂的抵抗,类似于Culex pipiens的发现.
- 阿诺菲莱斯甘比亚的一种副本数变异与西非的皮里米-甲基耐药性有关.
结论:
- 证明了Anopheles蚊子中抗虫剂机制的当代并行进化.
- 这些发现突出了解毒酶基因进化和拷贝数变化的作用,在抗杀虫剂耐药性.
- 结果对疟疾控制计划中可持续使用杀虫剂有重大影响.
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