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  • Technician
  • Undergraduate Student
  • Veterinary
  • Visiting Scientist
  • Deputy Director of Center
  • Deputy Director of Department
  • Deputy Director of National Reference Center
  • Deputy Head of Facility
  • Director of Center
  • Director of Department
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Published in Cell host & microbe - 13 Apr 2022

Lourenço M, Chaffringeon L, Lamy-Besnier Q, Titécat M, Pédron T, Sismeiro O, Legendre R, Varet H, Coppée JY, Bérard M, De Sordi L, Debarbieux L,

Link to Pubmed [PMID] – 35421351

Link to DOI – 10.1016/j.chom.2022.03.014

Cell Host Microbe 2022 Apr; 30(4): 556-569.e5

Abundance and diversity of bacteria and their viral predators, bacteriophages (phages), in the digestive tract are associated with human health. Particularly intriguing is the long-term coexistence of these two antagonistic populations. We performed genome-wide RNA sequencing on a human enteroaggregative Escherichia coli isolate to identify genes differentially expressed between in vitro conditions and in murine intestines. We experimentally demonstrated that four of these differentially expressed genes modified the interactions between E. coli and three virulent phages by either increasing or decreasing its susceptibility/resistance pattern and also by interfering with biofilm formation. Therefore, the regulation of bacterial genes expression during the colonization of the digestive tract influences the coexistence of phages and bacteria, highlighting the intricacy of tripartite relationships between phages, bacteria, and the animal host in intestinal homeostasis.

https://pubmed.ncbi.nlm.nih.gov/35421351