Summary of project PR000831

This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench,, where it has been assigned Project ID PR000831. The data can be accessed directly via it's Project DOI: 10.21228/M88H5F This work is supported by NIH grant, U2C- DK119886.


Project ID: PR000831
Project DOI:doi: 10.21228/M88H5F
Project Title:Uropathogenic versus Urocolonizing Escherichia coli
Project Summary:Urinary tract infections (UTIs) represent a major burden across the population, although key facets of their pathogenesis challenge physicians and investigators alike. Escherichia coli epitomizes these obstacles: this Gram-negative bacterial species is the most prevalent agent of UTIs worldwide and can also colonize the urogenital tract in a phenomenon known as asymptomatic bacteriuria (ASB). Unfortunately, at the level of the organism, the relationship between symptomatic UTI and ASB is poorly defined, confounding our understanding of microbial pathogenesis and strategies for clinical management. Unlike diarrheagenic pathotypes of E. coli, the definition of uropathogenic E. coli (UPEC) remains phenomenologic, without conserved phenotypes and (known) genetic determinants that rigorously distinguish UTI- and ASB-associated strains. This manuscript provides a cross-disciplinary review of the current issues – from interrelated mechanistic and diagnostic perspectives – and describes new opportunities by which clinical resources can be leveraged to overcome molecular challenges. Specifically, we present our work harnessing a large collection of patient-derived isolates to identify features that do (and do not) distinguish UTI- from ASB-associated E. coli strains. Analyses of biofilm formation, previously reported to be higher in ASB strains, revealed extensive phenotypic heterogeneity that did not correlate with symptomatology. However, metabolomic experiments revealed distinct signatures between ASB and cystitis isolates, including species in the purine pathway (previously shown to be critical for intracellular survival during acute infection). Together, these studies demonstrate how large-scale, wild-type approaches can help dissect the physiology of colonization-versus-infection, suggesting that the molecular definition of UPEC may rest at the level of global bacterial metabolism.
Institute:Vanderbilt University
Last Name:Rutledge
First Name:Alexandra
Address:7330 Stevenson Center Lane, NASHVILLE, TENNESSEE, 37235, USA

Summary of all studies in project PR000831

Study IDStudy TitleSpeciesInstituteAnalysis
(* : Contains Untargted data)
(* : Contains raw data)
ST001244 Uropathogenic versus Urocolonizing Escherichia coli Escherichia coli Vanderbilt University MS* 2020-03-03 1 23 Uploaded data (5.9G)*