期刊
JOURNAL OF LEUKOCYTE BIOLOGY
卷 75, 期 6, 页码 962-972出版社
FEDERATION AMER SOC EXP BIOL
DOI: 10.1189/jlb.1103586
关键词
TNF-R; antigen-specific T cells; autoimmunity; tumor immunology
OX40 (CD134), a membrane-bound member of the tumor necrosis factor-receptor superfamily, is expressed primarily on activated CD4(+) T cells. Following engagement on the cell surface, OX40 delivers a costimulatory signal that leads to potent, proinflammatory effects. Engagement of OX40 during antigen (Ag)-specific stimulation of T cells leads to increased production of memory T cells, increased migration of Ag-specific T cells, enhanced cytokine production by effector T cells, and the ability to break peripheral T cell tolerance in vivo. Therefore, OX40 engagement in vivo could have important ramifications for the enhancement of vaccine strategies and inhibition of unwanted inflammation. This review summarizes the molecular and cellular events that occur following OX40 engagement during Ag-specific T cell activation.
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