title: Unique patterns of surface receptors, cytokine secretion, and immune functions distinguish T cells in the bone marrow from those in the periphery: impact on allogeneic bone marrow transplantation.
abstract: The "conventional" NK1.1(-) T cells from mouse blood and marrow were compared with regard to surface receptors, cytokine secretion, and function. Most blood NK1.1(-) CD4(+) and CD8(+) T cells expressed the naive CD44(int/lo)CD62L(hi)CD45RB(hi) T-cell phenotype typical of those in the peripheral lymphoid tissues. In contrast, most marrow NK1.1(-) CD4(+) and CD8(+) T cells expressed an unusual CD44(hi)CD62L(hi)CD45RB(hi) phenotype. The blood NK1.1(-) CD4(+) T cells had a naive T-helper cytokine profile and a potent capacity to induce lethal graft versus host (GVH) disease in a C57BL/6 donor to a BALB/c host bone marrow transplantation model. In contrast, the marrow NK1.1(-) CD4(+) T cells had a Th0 cytokine profile and failed to induce lethal GVH disease, even at 20-fold higher numbers than those from the blood. NK1.1(-) CD8(+) T cells from the blood but not the marrow induced lethal GVH disease. Nevertheless, the marrow NK1.1(-) CD8(+) T cells induced potent antitumor activity that was augmented by marrow NK1.1(-) CD4(+) T cells and facilitated hematopoietic progenitor engraftment. The inability of marrow CD4(+) and CD8(+) T cells to induce GVH disease was associated with their inability to expand in the blood and gut of allogeneic recipients. Because neither the purified marrow CD4(+) or CD8(+) T cells induced GVH disease, their unique features are desirable for inclusion in allogeneic bone marrow or hematopoietic progenitor transplants.
authors.affiliation: Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, CA 94305-5166, USA.
authors.forename: Defu
authors.initials: D
authors.lastname: Zeng
authors.forename: Petra
authors.initials: P
authors.lastname: Hoffmann
authors.forename: Fengshuo
authors.initials: F
authors.lastname: Lan
authors.forename: Philip
authors.initials: P
authors.lastname: Huie
authors.forename: John
authors.initials: J
authors.lastname: Higgins
authors.forename: Samuel
authors.initials: S
authors.lastname: Strober
mesh_terms: D000818:Animals; D001773:Blood Cells / Q000166:cytology* / Q000276:immunology; D001854:Bone Marrow Cells / Q000166:cytology* / Q000276:immunology; D016026:Bone Marrow Transplantation; D016207:Cytokines / Q000032:analysis / Q000378:metabolism*; D006086:Graft vs Host Disease / Q000276:immunology; D020350:Graft vs Tumor Effect; D016130:Immunophenotyping; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009374:Neoplasms, Experimental / Q000628:therapy; D011956:Receptors, Cell Surface / Q000032:analysis*; D016176:T-Lymphocyte Subsets / Q000737:chemistry / Q000276:immunology / Q000378:metabolism; D013601:T-Lymphocytes / Q000737:chemistry / Q000276:immunology* / Q000378:metabolism; D014184:Transplantation, Homologous
chemical_list: D016207:Cytokines; D011956:Receptors, Cell Surface