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Phenotypical and functional characterization of small intestinal TcR gamma delta + T cells in coeliac disease.
Scand J Immunol. 1992 Apr; 35(4):459-68.SJ

Abstract

Increased numbers of TcR gamma delta + T cells are present in the small intestinal epithelium of patients with coeliac disease (CoD). Their function, however, is unknown. In order to facilitate detailed functional studies, intestinal gamma delta T cells have been isolated from small intestinal biopsies of patients with CoD (n = 18) and controls (n = 14). As expected, increased numbers of V delta 1+ TcR gamma delta + T cells were detected in freshly isolated intraepithelial cell suspensions (IEL) from CoD patients. Also, in the in vitro expanded IEL T-cell populations from CoD patients the numbers of V delta 1+ TcR gamma delta + T cells were increased compared with similar cell cultures from control patients. From IEL cultures derived from six CoD patients, 107 T-cell clones were generated by limiting dilution and analysed. Sixty of these clones were either CD4 or CD8 positive TcR alpha beta + clones. The remaining 47 clones expressed the TcR gamma delta. Further phenotypical analysis of the gamma delta T-cell clones indicated that the TcR gamma delta + T-cell population in the small intestinal epithelium of CoD patients is heterogeneous: four TcR gamma delta phenotypes could be detected and, although the majority of the TcR gamma delta + T cells were CD4 CD8, gamma delta T-cell clones expressing either a CD8 alpha alpha homodimer, a CD8 alpha beta heterodimer or CD4 were also identified. In contrast to the TCR alpha beta + IEL, most TcR gamma delta + IEL were CD5 negative. Furthermore, biochemical analysis indicated that the increase in V delta 1+ gamma delta T cells in the small intestinal epithelium of CoD patients was not the result of a monoclonal expansion. The small intestinal epithelium-derived gamma delta T-cell clones were functional in vitro since the majority of these clones were able to lyse target cell lines such as K562. Molt4 and Daudi. These novel findings therefore indicate that the gamma delta T cells in the small intestine of CoD patients represent a heterogeneous population and that such cells are functional in vitro. The isolation and the in vitro propagation and cloning of these cells may open new avenues for the study of the putative immune mechanisms leading to coeliac disease.

Authors+Show Affiliations

Department of Immunohematology and Bloodbank, Academic Hospital, Leiden, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

1532668

Citation

Rust, C, et al. "Phenotypical and Functional Characterization of Small Intestinal TcR Gamma Delta + T Cells in Coeliac Disease." Scandinavian Journal of Immunology, vol. 35, no. 4, 1992, pp. 459-68.
Rust C, Kooy Y, Peña S, et al. Phenotypical and functional characterization of small intestinal TcR gamma delta + T cells in coeliac disease. Scand J Immunol. 1992;35(4):459-68.
Rust, C., Kooy, Y., Peña, S., Mearin, M. L., Kluin, P., & Koning, F. (1992). Phenotypical and functional characterization of small intestinal TcR gamma delta + T cells in coeliac disease. Scandinavian Journal of Immunology, 35(4), 459-68.
Rust C, et al. Phenotypical and Functional Characterization of Small Intestinal TcR Gamma Delta + T Cells in Coeliac Disease. Scand J Immunol. 1992;35(4):459-68. PubMed PMID: 1532668.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phenotypical and functional characterization of small intestinal TcR gamma delta + T cells in coeliac disease. AU - Rust,C, AU - Kooy,Y, AU - Peña,S, AU - Mearin,M L, AU - Kluin,P, AU - Koning,F, PY - 1992/4/1/pubmed PY - 1992/4/1/medline PY - 1992/4/1/entrez SP - 459 EP - 68 JF - Scandinavian journal of immunology JO - Scand J Immunol VL - 35 IS - 4 N2 - Increased numbers of TcR gamma delta + T cells are present in the small intestinal epithelium of patients with coeliac disease (CoD). Their function, however, is unknown. In order to facilitate detailed functional studies, intestinal gamma delta T cells have been isolated from small intestinal biopsies of patients with CoD (n = 18) and controls (n = 14). As expected, increased numbers of V delta 1+ TcR gamma delta + T cells were detected in freshly isolated intraepithelial cell suspensions (IEL) from CoD patients. Also, in the in vitro expanded IEL T-cell populations from CoD patients the numbers of V delta 1+ TcR gamma delta + T cells were increased compared with similar cell cultures from control patients. From IEL cultures derived from six CoD patients, 107 T-cell clones were generated by limiting dilution and analysed. Sixty of these clones were either CD4 or CD8 positive TcR alpha beta + clones. The remaining 47 clones expressed the TcR gamma delta. Further phenotypical analysis of the gamma delta T-cell clones indicated that the TcR gamma delta + T-cell population in the small intestinal epithelium of CoD patients is heterogeneous: four TcR gamma delta phenotypes could be detected and, although the majority of the TcR gamma delta + T cells were CD4 CD8, gamma delta T-cell clones expressing either a CD8 alpha alpha homodimer, a CD8 alpha beta heterodimer or CD4 were also identified. In contrast to the TCR alpha beta + IEL, most TcR gamma delta + IEL were CD5 negative. Furthermore, biochemical analysis indicated that the increase in V delta 1+ gamma delta T cells in the small intestinal epithelium of CoD patients was not the result of a monoclonal expansion. The small intestinal epithelium-derived gamma delta T-cell clones were functional in vitro since the majority of these clones were able to lyse target cell lines such as K562. Molt4 and Daudi. These novel findings therefore indicate that the gamma delta T cells in the small intestine of CoD patients represent a heterogeneous population and that such cells are functional in vitro. The isolation and the in vitro propagation and cloning of these cells may open new avenues for the study of the putative immune mechanisms leading to coeliac disease. SN - 0300-9475 UR - https://www.unboundmedicine.com/medline/citation/1532668/Phenotypical_and_functional_characterization_of_small_intestinal_TcR_gamma_delta_+_T_cells_in_coeliac_disease_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0300-9475&date=1992&volume=35&issue=4&spage=459 DB - PRIME DP - Unbound Medicine ER -