生物
大肠杆菌
细菌
持久性(不连续性)
泌尿系统
抗生素
微生物学
体内
细胞分裂
抗生素耐药性
细胞
遗传学
解剖
基因
岩土工程
工程类
作者
Ariane Amoura,Claire Pistien,Camille Chaligné,Sara Dion,Mélanie Magnan,Antoine Bridier‐Nahmias,Alexandra Baron,Françoise Chau,E. Bourgogne,Minh Le,Érick Denamur,Molly A. Ingersoll,B. Fantin,A. Lefort,Imane El Meouche
标识
DOI:10.1016/j.chom.2024.04.015
摘要
Urinary tract infection (UTI), mainly caused by Escherichia coli, are frequent and have a recurrent nature even after antibiotic treatment. Potential bacterial escape mechanisms include growth defects, but probing bacterial division in vivo and establishing its relation to the antibiotic response remain challenging. Using a synthetic reporter of cell division, we follow the temporal dynamics of cell division for different E. coli clinical strains in a UTI mouse model with and without antibiotics. We show that more bacteria are actively dividing in the kidneys and urine compared with the bladder. Bacteria that survive antibiotic treatment are consistently non-dividing in three sites of infection. Additionally, we demonstrate how both the strain in vitro persistence profile and the microenvironment impact infection and treatment dynamics. Understanding the relative contribution of the host environment, growth heterogeneity, non-dividing bacteria, and antibiotic persistence is crucial to improve therapies for recurrent infections.
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