scholarly journals Transgenic mice demonstrate that epithelial homing of gamma/delta T cells is determined by cell lineages independent of T cell receptor specificity.

1990 ◽  
Vol 171 (4) ◽  
pp. 1015-1026 ◽  
Author(s):  
M Bonneville ◽  
S Itohara ◽  
E G Krecko ◽  
P Mombaerts ◽  
I Ishida ◽  
...  
Keyword(s):  
T Cells ◽  
Cell Surface ◽  
Transgenic Mice ◽  
T Cell Receptor ◽  
Cell Receptor ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
Receptor Specificity ◽  
Surface Receptors ◽  
Cell Lineages

gamma/delta T cells with different TCR repertoires are compartmentalized in different epithelia. This raises the possibility that the TCR-gamma/delta directs homing of T cells to these epithelia. Alternatively, the signals that induce TCR-gamma/delta expression in developing T cells may also induce homing properties in such cells, presumably in the form of cell surface receptors. We have examined this issue by studying the homing of gamma/delta T cells in transgenic mice constructed with specific pairs of rearranged gamma and delta genes. In such mice, most gamma/delta T cells express the transgene-encoded TCR. We find that homing to both skin and gut epithelia is a property of T cells and is not determined by the type of gamma and delta genes used to encode their TCR. We also studied the effect of TCR replacement on the expression of Thy-1 and CD8 proteins on the gamma/delta T cells associated with gut epithelia. Our results show that the expression of the appropriate type of TCR-gamma/delta is not required for the Thy-1 expression by these T cells, suggesting that Thy-1 is not an activation marker. In contrast, CD8 expression by gut gamma/delta T cells seems to depend on the expression of the appropriate type of TCR.

T-cell receptor repertoire of circulating gamma delta T-cells in Takayasu's arteritis

2006 ◽  
Vol 118 (2-3) ◽  
pp. 243-249 ◽  
Author(s):  
Sunil Kumar Chauhan ◽  
Naresh Kumar Tripathy ◽  
Nakul Sinha ◽  
Soniya Nityanand
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Cell Receptor ◽  
Takayasu’S Arteritis ◽  
Cell Receptor ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
Receptor Repertoire ◽  
T Cell Receptor Repertoire ◽  
Cell Receptor Repertoire

scholarly journals Fetal liver T cell receptor gamma/delta+ T cells as cytotoxic T lymphocytes specific for maternal alloantigens.

1992 ◽  
Vol 176 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Y Miyagawa ◽  
T Matsuoka ◽  
A Baba ◽  
T Nakamura ◽  
T Tsuno ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Cell Receptor ◽  
Cell Lines ◽  
Fetal Liver ◽  
Cell Receptor ◽  
Lymphoid Cells ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
Killer Activity

We have established fetal liver-derived T cell receptor (TCR) gamma/delta+, CD3+ T cell lines that are cytotoxic for maternal T cells. Fetal liver-derived lymphoid progenitors yielded predominantly TCR-gamma/delta+ cell clusters when cultured on fetal bone marrow-derived stromal cells in the presence of a cytokine cocktail under magnetic force. These tightly adherent clusters were cloned by limiting dilution and the resulting cell lines analyzed for phenotype and function. Six of eight TCR-gamma/delta lines from 8-9.5-wk gestation fetuses were V delta 2+ as compared with zero of eight lines from later stages of gestation (10 and 15 wk), where all the lines were V delta 1+. In cytotoxicity assays, these TCR-gamma/delta+, CD3+, CD4-, and CD8+ or CD8- long-term cultured lymphoid cells (LLC) were killer cells active against the class I antigens on maternal T cells. Of the cell lines, the CD8+ TCR-gamma/delta+ LLC had the highest levels of killer activity. Thus fetal liver TCR-gamma/delta+ T cells may play a crucial role in protection against invading maternal T cells generated in the feto-maternal interaction.

Skewed T-cell receptor usage and junctional heterogeneity among isletitis alpha beta and gamma delta T-cells in human IDDM [corrected]

Diabetes ◽  
1994 ◽  
Vol 43 (4) ◽  
pp. 599-606 ◽  
Author(s):  
P. Santamaria ◽  
C. Lewis ◽  
J. Jessurun ◽  
D. E. Sutherland ◽  
J. J. Barbosa
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Cell Receptor ◽  
Cell Receptor ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
Receptor Usage ◽  
Alpha Beta

scholarly journals Late dominance of the inflammatory process in murine influenza by gamma/delta + T cells.

1990 ◽  
Vol 172 (4) ◽  
pp. 1225-1231 ◽  
Author(s):  
S R Carding ◽  
W Allan ◽  
S Kyes ◽  
A Hayday ◽  
K Bottomly ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell Receptor ◽  
Influenza A ◽  
Inflammatory Process ◽  
Cell Receptor ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
Mrna Population ◽  
Alpha Beta ◽  
Cell Receptor Alpha

The inflammatory response in the lungs of mice infected with an influenza A virus consists largely of macrophages and CD3+ T cells. Most T lymphocytes recovered before day 7 after infection express mRNA for the T cell receptor alpha/beta (TCR-alpha/beta), while TCR-gamma/delta mRNA+ cells are found at much higher frequency over the next 7 d. The predominant surface phenotype for the TCR-gamma/delta mRNA+ population is CD3+4-8-TCR-alpha/beta-. Some lymphocytes expressing all the known V gamma genes are found in the inflammatory exudate, but V gamma 2+/V gamma 1+ and V gamma 4+ T cells are present at highest frequency. The response is staged, with maximal numbers of V gamma 4+ cells occurring on day 10 after infection, while the predominant phenotype on day 13 is V gamma 2/V gamma 1+. The emerging peak in numbers of V gamma 4+ lymphocytes is paralleled by increasing numbers of macrophages expressing hsp mRNA. The later maxima found for the V gamma 2+/V gamma 1+ T cells is consistent with the possibility that at least some of these lymphocytes are responding to the hsp+ cells and are functioning to resolve the inflammatory process.

scholarly journals T-cell receptor gamma delta and gamma transgenic mice suggest a role of a gamma gene silencer in the generation of alpha beta T cells.

1990 ◽  
Vol 87 (8) ◽  
pp. 3067-3071 ◽  
Author(s):  
I. Ishida ◽  
S. Verbeek ◽  
M. Bonneville ◽  
S. Itohara ◽  
A. Berns ◽  
...  
Keyword(s):  
T Cells ◽  
T Cell ◽  
Transgenic Mice ◽  
T Cell Receptor ◽  
Cell Receptor ◽  
Gamma Delta ◽  
Alpha Beta

scholarly journals Autoaggressive myocytotoxic T lymphocytes expressing an unusual gamma/delta T cell receptor.

1992 ◽  
Vol 176 (6) ◽  
pp. 1785-1789 ◽  
Author(s):  
G Pluschke ◽  
D Rüegg ◽  
R Hohlfeld ◽  
A G Engel
Keyword(s):  
T Cells ◽  
T Cell ◽  
T Lymphocytes ◽  
T Cell Receptor ◽  
Cell Clone ◽  
Cell Receptor ◽  
Gamma Delta T Cells ◽  
Gamma Delta ◽  
T Cell Clone ◽  
Gamma Delta T Cell

Polymyositis mediated by gamma/delta T cells is a unique disease in which autoaggressive T lymphocytes surround, invade, and destroy muscle fibers. Histochemically, the vast majority of muscle-infiltrating T cells in a patient with polymyositis were reactive with a pan-gamma/delta T cell receptor (TCR)-specific monoclonal antibody (TCR-delta 1+), but unlike > 90% of peripheral blood gamma/delta T cells, these lymphocytes did not react with V delta 1- or V gamma 9-specific antibodies (A13- and Ti gamma A-, respectively). Differential reactivity with two different V delta 2-specific monoclonal antibodies (BB3-/TiV-delta 2+) indicated that the infiltrating T cells express a V delta 2-containing TCR with unusual additional structural features. Using conventional and anchored polymerase chain reaction for the analysis of TCR transcripts, we found a striking predominance of one unusual V delta 2-J delta 3 recombination and one V gamma 3-J gamma 1 recombination. Both the unusual phenotype (TCR-delta 1+/A13-/Ti gamma A-/BB3-/TiV-delta 2+) and the dominance of distinct TCR transcripts are compatible with the assumption that one T cell clone, which expresses a V gamma 3-J gamma 1-C gamma 2/V delta 2-J delta 3-C delta disulfide-linked TCR, dominates among the infiltrating T cells of the polymyositis muscle specimen analyzed.

scholarly journals Thymic origin of embryonic intestinal gamma/delta T cells.

1993 ◽  
Vol 177 (2) ◽  
pp. 257-263 ◽  
Author(s):  
D Dunon ◽  
M D Cooper ◽  
B A Imhof
Keyword(s):  
T Cells ◽  
T Cell ◽  
Cell Receptor ◽  
Intraepithelial Lymphocytes ◽  
Cell Subpopulation ◽  
Current Evidence ◽  
Gamma Delta T Cells ◽  
Intestinal Colonization ◽  
Gamma Delta ◽  
Embryo Cells

Current evidence suggests both thymic and extrathymic origins for T cells. Studies in mice favor an in situ origin for a prominent population of intestinal intraepithelial lymphocytes that express gamma/delta T cell receptor (TCR). This developmental issue is explored in an avian model in which the gamma/delta lymphocytes constitute a major T cell subpopulation that is accessible for study during the earliest stages of lymphocyte development. In the chick embryo, cells bearing the gamma/delta TCR appear first in the thymus where they reach peak levels on days 14-15 of embryogenesis, just 2 d before gamma/delta T cells appear in the intestine. Using two congenic chick strains, one of which expresses the ov antigen, we studied the origin and kinetics of intestinal colonization by gamma/delta T cells. The embryonic gamma/delta+ thymocytes homed to the intestine where they survived for months, whereas an embryonic gamma/delta- thymocyte population enriched in thymocyte precursors failed to give rise to intestinal gamma/delta+ T cells. Embryonic hemopoietic tissues, bone marrow, and spleen, were also ineffective sources for intestinal gamma/delta+ T cells. Intestinal colonization by gamma/delta+ thymocytes occurred in two discrete waves in embryos and newly hatched birds. The data indicate that intestinal gamma/delta T cells in the chicken are primarily thymic migrants that are relatively long-lived.

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