Related Experiment Video
Updated: May 25, 2026

RNA Fluorescence in situ Hybridization (FISH) to Visualize Microbial Colonization and Infection in Caenorhabditis elegans Intestines
Published on: July 27, 2022
Immune defense mechanisms in the Caenorhabditis elegans intestinal epithelium
Read Pukkila-Worley1, Frederick M Ausubel
1Division of Infectious Diseases, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. rpukkilaworley@partners.org
Abstract:
Intestinal epithelial cells provide an essential line of defense for Caernohabditis elegans against ingested pathogens. Because nematodes consume microorganisms as their food source, there has presumably been selection pressure to evolve and maintain immune defense mechanisms within the intestinal epithelium. Here we review recent advances that further define the immune signaling network within these cells and suggest mechanisms used by the nematode to monitor for infection. In reviewing studies of pathogenesis that use this simple model system, we hope to illustrate some of the basic principles of epithelial immunity that may also be of relevance in higher order hosts.
Related Concept Videos
Physiology of Enteric Nervous System and Gut Health
Defense Mechanism Against Infection
In addition, many body organ systems have unique defenses against infection. The skin is an intact, multilayered surface preventing invasion by microorganisms unless impaired. Mucous membranes lining the mouth, nose, and eyelids are barriers...
Renewal of Intestinal Stem Cells
Defenses Against Pathogens and Herbivores
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal

