Epithelial maturity influences EPEC-induced desmosomal alterations

Research output: Contribution to journalArticle

Abstract

Desmosomes are junctional protein complexes that confer strong adhesive capacity to adjacent host cells. In a recent study, we showed that enteropathogenic Escherichia coli (EPEC) disrupts desmosomes, weakens cell-cell adhesion and perturbs barrier function of intestinal epithelial (C2BBe) cells. Desmosomal damage was dependent on the EPEC effector protein EspH and its inhibitory effect on Rho GTPases. EspH-mediated Rho inactivation resulted in retraction of keratin intermediate filaments and degradation of desmosomal cadherins. Immunofluorescence studies of EPEC-infected C2BBe cells revealed keratin retraction towards the nucleus coincident with significant cytoplasmic redistribution of the desmosomal cadherin desmoglein-2 (DSG2). In this addendum, we expand on how EPEC-induced keratin retraction leads to loss of DSG2 anchoring at the junctions, and show that maturity of the epithelial cell monolayer impacts the fate of desmosomes during infection.

Original languageEnglish (US)
Pages (from-to)241-245
Number of pages5
JournalGut microbes
Volume10
Issue number2
DOIs
StatePublished - Jan 1 2019

Fingerprint

Enteropathogenic Escherichia coli
Desmosomes
Desmoglein 2
Desmosomal Cadherins
Keratins
Epithelial Cells
rho GTP-Binding Proteins
Intermediate Filaments
Escherichia coli Proteins
Cadherins
Cell Adhesion
Adhesives
Fluorescent Antibody Technique
Infection
Proteins

Keywords

  • desmoglein
  • desmosome
  • DSG2
  • EPEC
  • EspH
  • keratin
  • Rho GTPase

ASJC Scopus subject areas

  • Microbiology
  • Gastroenterology
  • Microbiology (medical)
  • Infectious Diseases

Cite this

Epithelial maturity influences EPEC-induced desmosomal alterations. / Roxas, Jennifer Lising; Vedantam, Gayatri; Viswanathan, Virinchipuram.

In: Gut microbes, Vol. 10, No. 2, 01.01.2019, p. 241-245.

Research output: Contribution to journalArticle

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