Shiga Toxin Remodels the Intestinal Epithelial Transcriptional Response to Enterohemorrhagic Escherichia Coli

Overview

Journal PLoS Pathog

Specialty Microbiology

Date 2021 Feb 2

PMID 33529199

Citations 4

Authors

Alyson R Warr

Carole J Kuehl

Matthew K Waldor

Affiliations

Soon will be listed here.

Abstract

Enterohemorrhagic Escherichia coli (EHEC) is a food-borne pathogen that causes diarrheal disease and the potentially lethal hemolytic uremic syndrome. We used an infant rabbit model of EHEC infection that recapitulates many aspects of human intestinal disease to comprehensively assess colonic transcriptional responses to this pathogen. Cellular compartment-specific RNA-sequencing of intestinal tissue from animals infected with EHEC strains containing or lacking Shiga toxins (Stx) revealed that EHEC infection elicits a robust response that is dramatically shaped by Stx, particularly in epithelial cells. Many of the differences in the transcriptional responses elicited by these strains were in genes involved in immune signaling pathways, such as IL23A, and coagulation, including F3, the gene encoding Tissue Factor. RNA FISH confirmed that these elevated transcripts were found almost exclusively in epithelial cells. Collectively, these findings suggest that Stx potently remodels the host innate immune response to EHEC.

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