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Related Experiment Videos

Intestinal myofibroblasts and immune tolerance.

J I Saada1, C A Barrera, V E Reyes

  • 1Department of Internal Medicine, Division of Gastroenterology, 301 University Boulevard, Route 1058, Galveston, TX 77555-1058, USA. jsaada@utmb.edu

Annals of the New York Academy of Sciences
|February 1, 2005
PubMed
Summary

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Human colonic myofibroblasts (CMFs) act as nonprofessional antigen-presenting cells (APCs), influencing T cell responses in the gut. These cells are crucial for maintaining immune tolerance to food antigens and gut microbes.

Area of Science:

  • Immunology
  • Gastroenterology
  • Cell Biology

Background:

  • Stromal cells, including myofibroblasts and fibroblasts, are abundant MHC class II-positive cells in the colonic lamina propria.
  • Their presence suggests a role in regulating CD4(+) T cell responses within the tolerogenic mucosal environment.

Purpose of the Study:

  • To investigate if human colonic myofibroblasts (CMFs) share phenotypic and functional characteristics with conventional antigen-presenting cells (APCs).

Main Methods:

  • Phenotypic analysis of CMFs.
  • Functional assays to assess antigen presentation capabilities.

Main Results:

  • Human colonic myofibroblasts exhibit characteristics of a novel, nonprofessional APC phenotype.

Related Experiment Videos

  • CMFs are capable of modulating mucosal T cell responses.

    • Conclusions:

    • Intestinal myofibroblasts represent a unique APC subset crucial for immune regulation in the gut.
    • Their strategic location supports a significant role in promoting tolerance to luminal antigens.