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Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection
09:24

Studying Inherited Immunity in a Caenorhabditis elegans Model of Microsporidia Infection

Published on: April 6, 2022

Preparing a discreet escape: Microsporidia reorganize host cytoskeleton prior to non-lytic exit from C. elegans

Suzannah C Szumowski1, Kathleen A Estes, Emily R Troemel

  • 1Division of Biological Sciences; Section of Cell and Developmental Biology; University of California San Diego; La Jolla, CA USA.

Worm
|September 24, 2013
PubMed

Insights

Nematocida parisii, an intracellular pathogen, exits host cells in a non-lytic, actin-dependent manner by remodeling the host cytoskeleton. This study utilized the C. elegans model to reveal microsporidia transmission mechanisms.

Area of Science:

  • Microbiology
  • Cell Biology
  • Parasitology

Background:

  • Intracellular pathogens infect intestinal cells, and their exit is vital for transmission.
  • In vitro cell culture lacks the complexity of in vivo polarized intestinal epithelial cells.
  • The nematode Caenorhabditis elegans offers a tractable in vivo model for studying host-pathogen interactions.

Purpose of the Study:

  • To investigate the exit strategy of Nematocida parisii, a microsporidian pathogen.
  • To understand the host-pathogen interactions and transmission mechanisms of intracellular pathogens.

Main Methods:

  • Utilized the C. elegans nematode as a host organism for in vivo studies.
  • Observed the remodeling of the host cytoskeleton by N. parisii.
  • Analyzed the actin-dependent and non-lytic nature of pathogen exit.

Main Results:

  • Nematocida parisii remodels the C. elegans host cytoskeleton during its exit.
  • Pathogen exit from host cells is an actin-dependent process.
  • The exit mechanism is non-lytic, preserving host cell integrity.

Conclusions:

  • N. parisii employs a unique, actin-dependent, non-lytic exit strategy.
  • C. elegans serves as a valuable model for studying microsporidia transmission.
  • Findings offer insights into the exit mechanisms of various intracellular pathogens infecting epithelial cells.
Keywords:
C. elegansactinhost cell exithost-pathogen interactionsintermediate filamentsintestinal infectionintracellular pathogenmicrosporidiaterminal web

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