E. coli's core genome modulates antibiotic susceptibility, revealing new survival pathways

A new study reveals that the core genome of E. coli significantly influences antibiotic susceptibility beyond known resistance genes. Researchers used a high-density transposon mutagenesis approach to systematically map genetic determinants of E. coli's susceptibility to 13 antibiotics. They found that disrupting metabolic and growth-associated pathways often enhanced survival under antibiotic stress. This genome-scale framework identifies conserved physiological pathways that promote survival, offering new avenues for strategies to combat antibiotic insusceptibility and improve drug efficacy.