Cellular Self-Digestion and Persistence in Bacteria

Microorganisms

Narendra K. Dewangan¹  Mehmet A. Orman¹  Sreyashi Ghosh¹  Shayne Sensenbach¹  Vahideh Angardi¹  Han G. Ngo¹  Prashant Karki¹  Sayed Golam Mohiuddin¹ 

[1] Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77004, USA;

关键词: self-digestion;    autophagy;    bacterial persisters;    intracellular degradation;    stationary-phase metabolism;    protein degradation;   

DOI  :  10.3390/microorganisms9112269

来源: DOAJ

【 摘 要 】

Cellular self-digestion is an evolutionarily conserved process occurring in prokaryotic cells that enables survival under stressful conditions by recycling essential energy molecules. Self-digestion, which is triggered by extracellular stress conditions, such as nutrient depletion and overpopulation, induces degradation of intracellular components. This self-inflicted damage renders the bacterium less fit to produce building blocks and resume growth upon exposure to fresh nutrients. However, self-digestion may also provide temporary protection from antibiotics until the self-digestion-mediated damage is repaired. In fact, many persistence mechanisms identified to date may be directly or indirectly related to self-digestion, as these processes are also mediated by many degradative enzymes, including proteases and ribonucleases (RNases). In this review article, we will discuss the potential roles of self-digestion in bacterial persistence.

【 授权许可】

Unknown