RRC ID 66235
Author Suzuki E, Urushidani T, Maeda S.
Title Bovine serum promotes the formation and phenotype memory retention of persister cells in Escherichia coli liquid cultures.
Journal World J Microbiol Biotechnol
Abstract Persister cells, or persisters, are a fraction of bacterial cells that have become temporarily tolerant to antibiotics despite their lack of typical antibiotic-resistant genes. In a previous study, we found that colony-biofilm culture (i.e., biofilm formed at an air-solid interface) promoted the formation and phenotype memory retention of persisters of Escherichia coli and other bacteria. To assess whether these same effects are caused by other types of stimuli that bacterial cells encounter in the environment, we examined the effects of bovine serum on the formation and phenotype retention of ampicillin-tolerant persisters in E. coli liquid culture. Bovine serum did indeed exert these effects significantly, and its effects were negated by heat treatment. Similar effects were observed with bovine serum albumin, albeit weaker than those of BS. Given that serum is a component of blood and lymph and is thus a general substance within animal and human bodies, our findings suggest that bacteria encountering these body fluids may enhance their abilities for persister formation and phenotype memory retention to allow their longer survival in antibiotic-containing environments.
Volume 37(7)
Pages 110
Published 2021-6-1
DOI 10.1007/s11274-021-03073-8
PII 10.1007/s11274-021-03073-8
PMID 34061238
IF 2.652
Prokaryotes E. coli