title: P-, E-, and L-selectin mediate migration of activated CD8+ T lymphocytes into inflamed skin.
abstract: P- and E-selectin mediate CD4+ Th1 cell migration into the inflamed skin in a murine contact hypersensitivity model. In this model, not only CD4+ T cells but also CD8+ T cells infiltrate the inflamed skin, and the role of CD8+ type 1 cytotoxic T (Tc1) cells as effector cells has been demonstrated. Here we show that in mice deficient in both P- and E-selectin, the infiltration of CD8+ T cells in the inflamed skin is reduced, suggesting the role of these selectins in CD8+ T cell migration. We directly studied the role of selectins using in vitro-generated Tc1 cells. These cells are able to migrate into the inflamed skin of wild-type mice. This migration is partially mediated by P- and E-selectin, as shown by the reduced Tc1 cell migration into the inflamed skin of mice deficient in both P- and E-selectin or wild-type mice treated with the combination of anti-P-selectin and anti-E-selectin Abs. During P- and E-selectin-mediated migration of Tc1 cells, P-selectin glycoprotein ligand-1 appears to be the sole ligand for P-selectin and one of the ligands for E-selectin. P- and E-selectin-independent migration of Tc1 cells into the inflamed skin was predominantly mediated by L-selectin. These observations indicate that all three selectins can mediate Tc1 cell migration into the inflamed skin.
authors.affiliation: Center for Hemostasis and Thrombosis Research, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA.
authors.forename: Takako
authors.initials: T
authors.lastname: Hirata
authors.forename: Barbara C
authors.initials: BC
authors.lastname: Furie
authors.forename: Bruce
authors.initials: B
authors.lastname: Furie
mesh_terms: D000818:Animals; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology* / Q000473:pathology*; D002448:Cell Adhesion / Q000235:genetics / Q000276:immunology; D002465:Cell Movement / Q000235:genetics / Q000276:immunology*; D003877:Dermatitis, Contact / Q000235:genetics / Q000276:immunology* / Q000473:pathology*; D004195:Disease Models, Animal; D015536:Down-Regulation / Q000235:genetics / Q000276:immunology; D019040:E-Selectin / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D019041:L-Selectin / Q000502:physiology; D008024:Ligands; D008213:Lymphocyte Activation / Q000235:genetics; D008562:Membrane Glycoproteins / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D019007:P-Selectin / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D019087:Selectins / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D012867:Skin / Q000276:immunology / Q000473:pathology*; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology / Q000473:pathology
chemical_list: D019040:E-Selectin; D008024:Ligands; D008562:Membrane Glycoproteins; D019007:P-Selectin; C084882:P-selectin ligand protein; D019087:Selectins; D019041:L-Selectin