Stress-induced protein aggregates shape population heterogeneity in bacteria

Curr Genet. 2019 Aug;65(4):865-869. doi: 10.1007/s00294-019-00947-1. Epub 2019 Mar 1.

Abstract

The concept of phenotypic heterogeneity preparing a subpopulation of isogenic cells to better cope with anticipated stresses has been well established. However, less is known about how stress itself can drive subsequent cellular individualization in clonal populations. In this perspective, we focus on the impact of stress-induced cellular protein aggregates, and how their segregation and disaggregation can act as a deterministic incentive for heterogeneity in the population emerging from a stressed ancestor.

Keywords: Asymmetric segregation; Epigenetic memory; Escherichia coli; Phenotypic heterogeneity; Protein aggregates; Stress resistance.

Publication types

  • Review

MeSH terms

  • Escherichia coli / genetics
  • Genetic Heterogeneity*
  • Protein Aggregates / genetics*
  • Stress, Physiological / genetics*

Substances

  • Protein Aggregates