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Gut intraepithelial lymphocytes and immunity to Coccidia
1St Bartholomew's and the Royal London School of Medicine and Dentistry, Digestive Diseases Research Centre, Turner Street, London, UK. v.mcdonald@mds.qmw.ac.uk
Parasitology Today (Personal Ed.)
|November 11, 1999
Summary
Intra-epithelial lymphocytes (IELs) are crucial immune cells in mucosal tissues. Research shows these T cells play a key role in controlling intracellular infections at mucosal surfaces.
Area of Science:
- Immunology
- Cell Biology
- Microbiology
Background:
- The physiological functions of intra-epithelial lymphocytes (IELs) in mucosal tissues remain largely unknown.
- IELs are primarily T cells but exhibit distinct surface phenotypes and activation characteristics compared to peripheral T cells.
Purpose of the Study:
- To elucidate the distinctive features of IELs.
- To present evidence for the role of IELs in mucosal immunity, particularly against intracellular infections.
Main Methods:
- Review of IEL characteristics.
- Analysis of evidence from studies involving Coccidia infections.
Main Results:
- IELs possess unique surface phenotypes and activation properties.
- Studies, especially those using Coccidia models, indicate a significant role for IELs in combating intracellular pathogens at mucosal sites.
Conclusions:
- Intra-epithelial lymphocytes are critical for mucosal immunity.
- IELs are important for controlling intracellular infections at the mucosal surface.