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Related Experiment Video

Updated: Jul 13, 2025

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime

Published on: May 3, 2016

Robbing the thief.

Kanchan Jaswal¹, Judith Behnsen¹

¹Department of Microbiology and Immunology, University of Illinois Chicago, Chicago, IL 60612, USA.

Cell Host & Microbe

|October 12, 2023

Summary

This summary is machine-generated.

Salmonella bacteria acquire iron using various mechanisms. Commensal Bacteroides species capture iron siderophores using a specialized lipoprotein, but Salmonella then reclaims these essential nutrients.

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Area of Science:

Microbiology
Molecular Biology
Host-Pathogen Interactions

Background:

Iron is essential for bacterial growth and virulence.
Salmonella utilizes multiple strategies to scavenge iron in host environments.
Siderophores are high-affinity iron-chelating compounds crucial for microbial iron acquisition.

Purpose of the Study:

To elucidate novel mechanisms of iron acquisition in the gut microbiota.
To investigate the role of commensal bacteria in nutrient cycling relevant to pathogen success.
To understand the intricate interplay between Enterobacteriaceae, Bacteroides, and Salmonella regarding iron metabolism.

Main Methods:

Comparative genomics and transcriptomics to identify relevant genes and pathways.
Biochemical assays to characterize siderophore binding and transport.
In vitro co-culture experiments to model microbial interactions.
In vivo studies in animal models to validate findings in a complex gut environment.

Main Results:

Commensal Bacteroides species possess a unique lipoprotein system for catecholate siderophore uptake.
This lipoprotein facilitates the acquisition of siderophores produced by Enterobacteriaceae.
Salmonella exhibits a mechanism to reacquire these siderophore-bound iron complexes, outcompeting Bacteroides.

Conclusions:

Bacteroides species play an indirect role in iron availability for pathogens like Salmonella.
A novel lipoprotein-mediated siderophore acquisition pathway is described in Bacteroides.
Salmonella's adaptability in iron acquisition highlights its success as an opportunistic pathogen.