The spread of antibiotic resistance in bacteria-plasmid networks

抗生素耐药性在细菌-质粒网络中的传播

• 批准号: BB/X010473/1
• 负责人: Dirk Sanders
• 金额: $ 50.08万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FX010473%2F1
• 关键词: spread; antibiotic; resistance; bacteria; plasmid

Antimicrobial resistance (AMR) is rising to dangerously high levels causing a global health crisis by threatening our ability to treat common infectious diseases. The intensive use of antibiotics for human treatment and in farming has dramatically increased the frequency of resistance with hotspots found in hospitals and many parts of the environment. Plasmids, mobile genetic elements, have a crucial role in spreading antimicrobial resistance. They can carry resistance against antibiotics and pass this on to bacteria. Antibiotics make such AMR carrying plasmids beneficial to their bacterial hosts. This is likely to change coevolutionary dynamics between plasmids and their hosts, resulting in plasmids becoming more prevalent and associated with a higher number of different bacteria. This fundamentally changes the network structure of interacting bacteria and plasmids and likely increases the spread of novel antibiotic resistance across microbial communities. With a series of experiments using simple and naturally complex microbial communities, I will determine the long-term impact of antibiotic exposure on plasmids and their bacterial hosts. I will also investigate emerging networks between plasmids and bacteria with novel methods. This experimental work, combined with theoretical approaches, will help predict the long-term impact of antibiotic pressure on the spread of antibiotic resistance across microbial communities and pathogens. The work will be conducted at the University of Exeter in collaboration with experts Alvaro San Millan (Madrid), Eva Top and Thibault Stalder (Idaho).

抗生素耐药性（AMR）正在上升到危险的高水平，威胁到我们治疗常见传染病的能力，从而导致全球健康危机。抗生素在人类治疗和农业中的大量使用大大增加了耐药性的频率，在医院和环境的许多地方都发现了热点。质粒是一种移动的遗传元件，在传播抗菌素耐药性中起着至关重要的作用。它们可以携带对抗生素的耐药性，并将其传递给细菌。抗生素使这种携带质粒的AMR对其细菌宿主有益。这可能会改变质粒和它们的宿主之间的共同进化动力学，导致质粒变得更加普遍，并与更多不同的细菌相关联。这从根本上改变了相互作用的细菌和质粒的网络结构，并可能增加新的抗生素耐药性在微生物群落中的传播。通过一系列使用简单和自然复杂微生物群落的实验，我将确定抗生素暴露对质粒及其细菌宿主的长期影响。我还将用新方法研究质粒和细菌之间的新兴网络。这项实验工作结合理论方法，将有助于预测抗生素压力对抗生素耐药性在微生物群落和病原体中传播的长期影响。这项工作将在埃克塞特大学与专家阿尔瓦罗·圣米兰（马德里）、伊娃托普和蒂博·斯塔德（爱达荷州）合作进行。

项目成果

Combined light pollution and night warming as a novel threat to ecosystems.

光污染和夜间变暖相结合，成为对生态系统的新威胁。

• DOI: 10.1016/j.tree.2023.05.012
• 发表时间: 2023
• 期刊: Trends in ecology & evolution
• 影响因子: 16.8
• 作者: Tougeron K

Description of the theoretical food web model from How artificial light at night may rewire ecological networks: concepts and models

夜间人造光如何重新连接生态网络：概念和模型中对理论食物网模型的描述

• DOI: 10.6084/m9.figshare.24167237
• 发表时间: 2023
• 作者: Sanders D

How artificial light at night may rewire ecological networks: concepts and models.

夜间人造光可能会恢复生态网络：概念和模型。

• DOI: 10.1098/rstb.2022.0368
• 发表时间: 2023-12-18
• 期刊: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
• 影响因子: 6.3
• 作者: Sanders, Dirk;Hirt, Myriam R.;Brose, Ulrich;Evans, Darren M.;Gaston, Kevin J.;Gauzens, Benoit;Ryser, Remo
• 通讯作者: Ryser, Remo

Host- plasmid network structure in wastewater is linked to antimicrobial resistance genes.

• DOI: 10.1038/s41467-024-44827-w
• 发表时间: 2024-01-16
• 期刊: NATURE COMMUNICATIONS
• 影响因子: 16.6
• 作者: Risely, Alice;Newbury, Arthur;Stalder, Thibault;Simmons, Benno I.;Top, Eva M.;Buckling, Angus;Sanders, Dirk
• 通讯作者: Sanders, Dirk