Distinct transcription factor network dynamics underlie early and long-term adaptation to rifampicin in Escherichia coli.

Sublethal rifampicin triggers a dynamic transcription factor network in Escherichia coli, with early responses involving 709 genes and long-term adaptation involving 272 genes.

• Why it matters: Understanding how bacteria adapt to antibiotic stress is crucial for combating resistance, yet the specific gene regulatory mechanisms remain unclear, especially across different species.
• What they did: The study analyzed genome-wide transcriptional responses in E. coli exposed to rifampicin, identifying key transcription factors and gene modules, and compared these responses to Mycobacterium tuberculosis.
• The result: Findings reveal conserved response patterns across species and suggest that targeting these gene networks could help develop strategies to prevent bacterial adaptation and resistance.