Beyond metabolic dormancy: metabolic rewiring in bacterial persistence

Area of Science:

• Microbiology
• Molecular Biology
• Systems Biology

Background:

• Bacterial persister cells contribute to chronic and recurrent infections by exhibiting antibiotic tolerance.
• Despite their importance, the metabolic plasticity of persister cells remains poorly understood.
• Classic hallmarks like biphasic killing curves and metabolic dormancy are inconsistently observed in persisters.

Purpose of the Study:

• To examine the static and dynamic characteristics of bacterial persister cell metabolism.
• To explore how genetics, environmental cues, and cellular variability shape persister metabolism.
• To elucidate the range of metabolic states within persister populations.

Main Methods:

• Literature review and synthesis of existing research on persister cell metabolism.
• Analysis of factors influencing metabolic rewiring in persisters.
• Examination of the diversity in persister cell phenotypes.

Main Results:

• Persister cell metabolism is highly plastic, influenced by genetics and environment.
• Persisters exhibit a spectrum of metabolic states, challenging the notion of uniform metabolic dormancy.
• Intrinsic cellular variability contributes significantly to persister diversity.

Conclusions:

• Bacterial persister cells are metabolically diverse, not uniformly dormant.
• Understanding persister metabolic rewiring is crucial for developing strategies against chronic infections.
• Phenotypic plasticity in persisters is shaped by a complex interplay of internal and external factors.