Rapid identification of key antibiotic resistance genes in <i>E. coli</i> using high-resolution genome-scale CRISPRi screening.

ABSTRACT: Bacteria possess a vast repertoire of genes to adapt to environmental challenges. Understanding the gene fitness landscape under antibiotic stress is crucial for elucidating bacterial resistance mechanisms and antibiotic action. To explore this, we conducted a genome-scale CRISPRi screen using a high-density sgRNA library in Escherichia coli exposed to various antibiotics. This screen identified essential genes under antibiotic-induced stress and offered insights into the molecular mechanisms underlying bacterial responses. We uncovered previously unrecognized genes involved in antibiotic resistance, including essential membrane proteins. The screen also underscored the importance of transcriptional modulation of essential genes in antibiotic tolerance. Our findings emphasize the ut

SUBMITTER: Choe D 

PROVIDER: S-EPMC12063145 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature