垃圾填埋场是多药耐药基因的热点:个人资料,驱动因素和宿主
Zihao Zheng1,2, Rui Zhang1, Wenqing Hong1,2
1School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China.
Environmental science & technology
|November 25, 2025
概括
城市固体废物填埋场是抗生素耐药性基因 (ARG),特别是多药耐药性基因 (MDRG) 的重要储存库. 这些MDRG是移动的,与毒性因素相关,并由多个因素驱动,突出了垃圾填埋场作为关键热点.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 公共卫生 公共卫生
背景情况:
- 联合国认定城市固体废物 (MSW) 垃圾填埋场是抗生素耐药性基因 (ARG) 的储库.
- 对MSW垃圾填埋场垃圾中的ARG配置文件和驱动因素的理解有限,这是抗体的原始来源.
- 知识差距阻碍了有效的ARG源监测和公共卫生管理.
研究的目的:
- 在MSW垃圾填埋场垃圾中调查ARG配置文件,驱动程序和主机.
- 描述多药耐药基因 (MDRGs) 的流行率和流动性.
- 确定影响MDRG变异的关键宿主和因素.
主要方法:
- 来自大型垃圾填埋场的废物样本的元基因组测序.
- 定量聚合酶连锁反应 (qPCR) 分析.
- 部分最小平方路径建模 (PLS-PM) 用于驾驶员分析.
主要成果:
- 检测到多种ARG,其中MDRG是占主导地位的类别 (39.78%).
- MDRG显示出高的移动性潜力 (等离子体,菌体,MGE) 并与毒性因子共定位.
- 关键的MDRG宿主被确定为*伪菌*,*阿辛托巴克特菌*和*布雷文迪蒙斯*.
- 由MGEs,金属抗性基因 (MRGs),宿主和环境因素驱动的MDRG变异.
- 甲基因组组装的基因组携带多个MDRG.
结论:
- 垃圾填埋场垃圾有各种ARG,移动MDRG的流行率很高.
- 垃圾填埋场中的MDRGs与毒性因素有关,并由复杂的相互作用驱动.
- 垃圾填埋场是MDRG传播的关键热点,影响公共卫生.
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