Related Experiment Video

Updated: Aug 7, 2026

Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat
08:27

Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat

Published on: October 29, 2014

11.1K

Comparative label-free proteomics of the neonatal meningitis-causing Escherichia coli K1 IHE3034 and RS218

Nikola Zlatkov1, Wilma Gunnari1, Ulrike Resch2

  • 1Department of Molecular Biology, Umeå Centre for Microbial Research (UCMR), Umeå University, Umeå, Sweden.

Microbiology Resource Announcements
|January 30, 2024
PubMed

Insights

Two newborn meningitis Escherichia coli K1 (NMEC) strains exhibit distinct proteomes and evolutionary paths. One strain favors anaerobic respiration, while the other uses SOS response to maintain its filamentous form.

Area of Science:

  • Microbiology
  • Proteomics
  • Bacterial Pathogenesis

Background:

  • Newborn bacterial meningitis is a severe condition often caused by Escherichia coli K1 (NMEC).
  • NMEC exhibits diverse morphotypes, influencing its virulence and survival strategies.
  • Understanding the proteomic differences between NMEC morphotypes can reveal novel therapeutic targets.

Purpose of the Study:

  • To compare the proteomes of two distinct NMEC morphotypes.
  • To identify differential protein expression related to unique evolutionary strategies.
  • To elucidate the molecular mechanisms underlying NMEC adaptation and persistence.

Main Methods:

  • Label-free quantitative proteomics was employed to analyze the protein content of two NMEC strains.
  • Comparative proteomic analysis was performed to identify differentially abundant proteins.
  • Bioinformatic tools were used for data interpretation and pathway analysis.

Main Results:

  • Both NMEC strains shared common virulence factors essential for meningitis.
  • Strain IHE3034 demonstrated a proteomic profile indicative of continuous anaerobic respiration.
  • Strain RS218 showed proteins associated with an active SOS response, correlating with its filamentous morphotype.

Conclusions:

  • Distinct proteomic profiles reflect divergent evolutionary strategies in NMEC morphotypes.
  • Anaerobic respiration and SOS response are key adaptations for NMEC survival and virulence.
  • Targeting these specific pathways could offer new avenues for treating NMEC meningitis.
Keywords:
ExPECNMECnewborn meningitisproteomics

More Related Videos

Identification of Antibacterial Immunity Proteins in Escherichia coli using MALDI-TOF-TOF-MS/MS and Top-Down Proteomic Analysis09:26

Identification of Antibacterial Immunity Proteins in Escherichia coli using MALDI-TOF-TOF-MS/MS and Top-Down Proteomic Analysis

Published on: May 23, 2021

3.2K
Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing09:44

Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing

Published on: December 23, 2022

2.2K

Related Concept Videos

Bacterial Gastroenteritis01:18

Bacterial Gastroenteritis

Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...