title: Functional dichotomy between OX40 and 4-1BB in modulating effector CD8 T cell responses.
abstract: Members of the TNFR family are thought to deliver costimulatory signals to T cells and modulate their function and survival. In this study, we compare the role of two closely related TNFR family molecules, OX40 and 4-1BB, in generating effector CD8 T cells to Ag delivered by adenovirus. OX40 and 4-1BB were both induced on responding naive CD8 T cells, but 4-1BB exhibited faster and more sustained kinetics than OX40. OX40-deficient CD8 T cells initially expanded normally; however, their accumulation and survival at late times in the primary response was significantly impaired. In contrast, 4-1BB-deficient CD8 T cells displayed hyperresponsiveness, expanding more than wild-type cells. The 4-1BB-deficient CD8 T cells also showed enhanced maturation attributes, whereas OX40-deficient CD8 T cells had multiple defects in the expression of effector cell surface markers, the synthesis of cytokines, and in cytotoxic activity. These results suggest that, in contrast to current ideas, OX40 and 4-1BB can have a clear functional dichotomy in modulating effector CD8 T cell responses. OX40 can positively regulate effector function and late accumulation/survival, whereas 4-1BB can initially operate in a negative manner to limit primary CD8 responses.
authors.affiliation: Division of Molecular Immunology, La Jolla Institute for Allergy and Immunology, San Diego, CA 92121, USA.
authors.forename: Seung-Woo
authors.initials: SW
authors.lastname: Lee
authors.forename: Yunji
authors.initials: Y
authors.lastname: Park
authors.forename: Aihua
authors.initials: A
authors.lastname: Song
authors.forename: Hilde
authors.initials: H
authors.lastname: Cheroutre
authors.forename: Byoung S
authors.initials: BS
authors.lastname: Kwon
authors.forename: Michael
authors.initials: M
authors.lastname: Croft
mesh_terms: D000256:Adenoviridae / Q000235:genetics / Q000276:immunology; D019264:Adoptive Transfer; D000818:Animals; D015703:Antigens, CD / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D002454:Cell Differentiation / Q000276:immunology; D005434:Flow Cytometry; D008213:Lymphocyte Activation / Q000276:immunology*; D051379:Mice; D008822:Mice, Transgenic; D010047:Ovalbumin / Q000276:immunology; D017475:Receptors, Nerve Growth Factor / Q000172:deficiency / Q000276:immunology*; D053262:Receptors, OX40; D018124:Receptors, Tumor Necrosis Factor / Q000172:deficiency / Q000276:immunology*; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9
chemical_list: D015703:Antigens, CD; D017475:Receptors, Nerve Growth Factor; D053262:Receptors, OX40; D018124:Receptors, Tumor Necrosis Factor; C505717:Tnfrsf4 protein, mouse; C505715:Tnfrsf9 protein, mouse; D053261:Tumor Necrosis Factor Receptor Superfamily, Member 9; D010047:Ovalbumin