A circulating bovine gamma delta T cell subset, which is found in large numbers in the spleen, accumulates inefficiently in an artificial site of inflammation: correlation with lack of expression of E-selectin ligands and L-selectin.
Tissue-specific localization of TCR-defined subsets of gamma delta T cells has been widely reported; however, the mechanisms responsible for this phenomenon are poorly understood. We describe a bovine gamma delta T cell TCR-associated subset that preferentially localizes in the spleen. This subset was characterized by coexpression of CD8, and was found to lack surface expression of E-selectin ligands, GR Ag ligands, as well as low expression of L-selectin. The CD8-positive gamma delta T cell subset did not accumulate at sites of inflammation as efficiently as CD8-negative gamma delta T cells that, in contrast, express E-selectin and GR ligands and high levels of L-selectin. This is the first demonstration of a gamma delta T cell subset, which exhibits a defined tissue tropism, having a unique adhesion molecule expression profile. These results demonstrate that in some cases tissue-specific accumulation of gamma delta T cell subsets can be predicted by expression, or lack of expression, of defined homing molecules.
Wilson
E
E
Department of Veterinary Molecular Biology, Montana State University, Bozeman 59717, USA.
Aydintug
M K
MK
Jutila
M A
MA
D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000378:metabolism / Q000473:pathology; D002417:Cattle; D015815:Cell Adhesion Molecules / Q000378:metabolism; D002465:Cell Movement / Q000276:immunology*; D019040:E-Selectin / Q000096:biosynthesis* / Q000378:metabolism; D007249:Inflammation / Q000276:immunology; D019041:L-Selectin / Q000096:biosynthesis* / Q000378:metabolism; D008024:Ligands; D018655:Lymphocyte Count; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000096:biosynthesis*; D012867:Skin / Q000276:immunology* / Q000473:pathology*; D013154:Spleen / Q000166:cytology / Q000276:immunology*; D016176:T-Lymphocyte Subsets / Q000276:immunology / Q000378:metabolism*
D015815:Cell Adhesion Molecules; D019040:E-Selectin; D008024:Ligands; D016692:Receptors, Antigen, T-Cell, gamma-delta; D019041:L-Selectin