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© Research
Publication : Immunology

The glycobiology of uropathogenic E. coli infection: the sweet and bitter role of sugars in urinary tract immunity.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Immunology - 24 Mar 2021

Lupo F, Ingersoll MA, Pineda MA,

Link to Pubmed [PMID] – 33763853

Link to DOI – 10.1111/imm.13330

Immunology 2021 Mar; ():

Urinary tract infections (UTI) are among the most prevalent infectious diseases and the most common cause of nosocomial infections, worldwide. Uropathogenic E. coli (UPEC) are responsible for approximately 80% of all UTI, which most commonly affect the bladder. UPEC colonize the urinary tract by ascension of the urethra, followed by cell invasion, and proliferation inside and outside urothelial cells, thereby causing symptomatic infections and quiescent intracellular reservoirs that may lead to recurrence. Sugars, or glycans, are key molecules for host-pathogen interactions, and UTI are no exception. Surface glycans regulate many of the events associated with UPEC adhesion and infection, as well as induction of the host immune response. While the bacterial protein FimH binds mannose-containing host glycoproteins to initiate infection and UPEC-secreted polysaccharides block immune mechanisms to favour intracellular replication, host glycans on the urothelial surface and on secreted glycoproteins prevent or limit infection by inhibiting UPEC adhesion. Given the importance of glycans during UTI, here we review the glycobiology of UPEC infection to highlight fundamental sugar-mediated processes of immunological interest for their potential clinical applications. Interdisciplinary approaches incorporating glycomics and infection biology may help to develop novel non-antibiotic-based therapeutic strategies for bacterial infections as the spread of antimicrobial-resistant uropathogens is currently threatening modern healthcare systems.

https://pubmed.ncbi.nlm.nih.gov/33763853