Antibiotic resistance gene expression (ARG expression)

Antibiotic resistance gene expression is the biological process by which bacteria activate and synthesize proteins that confer protection against antimicrobial agents. This process is regulated by complex genetic networks, including transcription factors like MarA or SoxS and two-component systems that respond to environmental stress or the presence of drugs. When these genes are expressed, they produce enzymes like beta-lactamases, efflux pumps, or target-modifying proteins that render standard antibiotics ineffective. From a therapeutic perspective, targeting the expression of these genes—rather than the proteins themselves—is an emerging strategy involving antisense oligonucleotides, CRISPR-interference, or small-molecule inhibitors of bacterial regulatory proteins. By suppressing the transcription or translation of resistance factors, these interventions aim to re-sensitize pathogens to existing antibiotics and curb the spread of multi-drug resistant (MDR) infections.

Other names

Antimicrobial resistance gene expressionBacterial resistance signalingARG transcriptionAMR gene regulation

Inhibition of mRNA synthesis or stability, blockade of transcriptional activators, or sequence-specific cleavage of resistance-conferring genetic material.