Intercellular Interactions and Cytokine Responsiveness of Peritoneal Alpha/beta and Gamma/delta T Cells from Listeria-infected Mice: Synergistic Effects of Interleukin 1 and 7 on Gamma/delta T Cells
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General Medicine
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Peritoneal gamma/delta T cells from Listeria-immune mice show an enhanced potential to expand when restimulated with antigens or mitogens in vitro (see companion paper [Skeen, M. J., and H. K. Ziegler. 1993. J. Exp. Med. 178:971]). When cocultured with peritoneal alpha/beta T cells, the gamma/delta T cell population expanded preferentially even when the in vitro stimulus was specific for the alpha/beta T cell population. Purified gamma/delta T cells did not respond to alpha/beta T cell-specific stimuli. If isolated T cell subsets were recombined in cell mixing experiments, the resulting proliferative response was greater than additive. Irradiated alpha/beta T cells could enhance the proliferation of responding gamma/delta T cells, but the effect was unidirectional; i.e., irradiated gamma/delta T cells did not stimulate responding gamma/delta T cells. This effect appeared to be cytokine mediated and did not require cell-cell contact. Both recombinant interleukin 2 (rIL-2) and rIL-7 could support the expansion of the gamma/delta T cells, while rIL-7 was only minimally stimulatory for the alpha/beta T cells. The magnitude of the response by gamma/delta T cells to rIL-7 exceeded the response to other in vitro stimuli, including immobilized anti-T cell receptor monoclonal antibody, and was 50-100-fold greater than the alpha/beta T cell response to IL-7. This unique sensitivity of gamma/delta T cells to IL-7 was strongly enhanced by the presence of accessory cells. These cells could be replaced by rIL-1, establishing a synergy for IL-1 and IL-7 as factors that could uniquely stimulate this gamma/delta T cell population. Isolated peritoneal gamma/delta T cells from Listeria-immune mice react to heat-killed Listeria preparations in the presence of macrophages accessory cells in a non-H-2-restricted manner. Considered collectively, these results suggest a potential mechanism by which gamma/delta T cells can predominate in epithelial tissues and at sites of infection.
Diversity of γδ T-cell antigens.
Born W, Aydintug M, OBrien R Cell Mol Immunol. 2012; 10(1):13-20.
PMID: 23085946 PMC: 4003174. DOI: 10.1038/cmi.2012.45.
Gammadelta T-cells: potential regulators of the post-burn inflammatory response.
Schwacha M Burns. 2008; 35(3):318-26.
PMID: 18951718 PMC: 2688457. DOI: 10.1016/j.burns.2008.08.002.
Eberl M, Jomaa H, Hayday A Immunology. 2004; 112(3):364-8.
PMID: 15196203 PMC: 1782494. DOI: 10.1111/j.1365-2567.2004.01921.x.
The role of gamma/delta T cells in immunity to infection and regulation of inflammation.
Ziegler H Immunol Res. 2004; 29(1-3):293-302.
PMID: 15181290 DOI: 10.1385/ir:29:1-3:293.
Nakae S, Asano M, Horai R, Iwakura Y Immunology. 2002; 104(4):402-9.
PMID: 11899425 PMC: 1783318. DOI: 10.1046/j.1365-2567.2001.01337.x.