Carbon starvation of Mycobacterium abscessus induces a non-replicating state with extensive proteomic remodeling.

Carbon starvation induces extensive proteomic remodeling in Mycobacterium abscessus, with 33% of proteins significantly changing in abundance during non-replicating persistence.

• Why it matters: Understanding how Mab survives under stress conditions like nutrient deprivation is crucial because its ability to enter dormancy contributes to its drug resistance and chronic infection persistence, complicating treatment.
• What they did: The study analyzed proteomic differences between replicating and non-replicating Mab using a carbon starvation model, identifying 2,251 proteins with 17% unique to each state and 33% significantly altered.
• The result: Findings reveal key pathways, including cell wall biosynthesis and energy metabolism, are remodeled during dormancy, providing insights into Mab’s survival strategies and potential targets for improved therapies.