ArticleProceedings of the National Academy of Sciences of the United States of America1998
Intestinal intraepithelial lymphocytes include precursors committed to the T cell receptor alpha beta lineage.
Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 31 citations in OpenAlex.
- CD8αα⁺ innate-type lymphocytes in the intestinal epithelium mediate mucosal immunity.Immunity · 2014Article
- Characterization of T cell differentiation in the murine gut.The Journal of experimental medicine · 2002Article
- Tissue distribution, antigen specificity and effector functions of gamma delta T cells in human diseases.Springer seminars in immunopathology · 2000Review
- Differential roles of segmented filamentous bacteria and clostridia in development of the intestinal immune system.Infection and immunity · 1999Article
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
Abstract
The majority of T cells develop in the thymus and exhibit well characterized phenotypic changes associated with their maturation. Previous analysis of intestinal intraepithelial lymphocytes (IEL) from nude mice and a variety of experimentally manipulated models led to the view that at least a portion of these cells represent a distinct T cell population that matures extrathymically. The IEL that are postulated to mature within the intestine include both T cell receptor (TCR) alpha beta- and gamma delta-bearing subpopulations. They can be distinguished from conventional thymically derived T cells in that they express an unusual coreceptor, a CD8alpha homodimer. In addition, they can utilize the Fc receptor gamma-chain in place of the CD3-associated zeta-chain for TCR signaling and their maturation depends on the interleukin 2 receptor beta-chain. Moreover, TCRalpha beta+CD8alpha alpha+ IEL are not subject to conventional thymic selection processes. To determine whether CD3(-)CD8alpha alpha+ IEL represent precursors of T cells developing extrathymically, we examined IEL from knockout mice lacking the recombination activating gene-1 (rag-1), CD3epsilon, or both Lck and Fyn, in which thymic T cell development is arrested. CD3(-)CD8alpha alpha+CD16(+) IEL from all three mutant strains, as well as from nude mice, included cells that express pre-TCRalpha transcripts, a marker of T cell commitment. These IEL from lck-/-fyn-/- animals exhibited TCR beta-gene rearrangement. However, CD3(-)CD8alpha alpha+CD16(+) IEL from epsilon-deficient mice had not undergone Dbeta-Jbeta joining, despite normal rearrangement at the TCRbeta locus in thymocytes from these animals. These results revealed another distinction between thymocytes and IEL, and suggested an unexpectedly early role for CD3epsilon in IEL maturation.
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Registered trials
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