Exploration of Salmonella effector mutant strains on MTR4 and RRP6 degradation.

Abstract:

:Salmonella enterica serovar Typhimurium (Salmonella), a pathogenic bacterium, is a major cause of foodborne diseases worldwide. Salmonella injects multiple virulence factors, called effectors, into cells and causes multiple rearrangements of cellular biological reactions that are important for Salmonella proliferation and virulence. Previously, we reported that Salmonella infection causes loss of MTR4 and RRP6, which are nuclear RNA degradation factors, resulting in the stabilization and accumulation of unstable nuclear RNAs. This accumulation is important for the cellular defense for Salmonella infection. In this study, we examined a series of Salmonella mutant strains, most of which are strains with genes related to effectors translocated by T3SSs encoded on Salmonella pathogenic islands, SPI-1 and SPI-2, that have been depleted. Among 42 Salmonella mutants, 6 mutants' infections canceled loss of MTR4 and RRP6. Proliferation assay of Salmonella in the cell revealed that six mutants showed poor proliferation in the host cell, demonstrating that poor proliferation contributed to cancellation of MTR4 and RRP6 loss. This result indicates that certain events associated with Salmonella proliferation in host cells cause loss of MTR4 and RRP6.

journal_name

Biosci Trends

journal_title

Bioscience trends

authors

Sun X,Kawata K,Miki A,Wada Y,Nagahama M,Takaya A,Akimitsu N

doi

10.5582/bst.2020.03085

subject

Has Abstract

pub_date

2020-09-21 00:00:00

pages

255-262

issue

4

eissn

1881-7815

issn

1881-7823

journal_volume

14

pub_type

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