TY - JOUR
T1 - OX40 induces CCL20 expression in the context of antigen stimulation
T2 - An expanding role of co-stimulatory molecules in chemotaxis
AU - Zhong, Wenwei
AU - Zhang, Zili
AU - Hinrichs, David
AU - Wu, Xiumei
AU - Hall, Mark
AU - Xia, Zhenwei
AU - Rosenbaum, James T.
PY - 2010/6
Y1 - 2010/6
N2 - OX40 is an inducible co-stimulatory molecule expressed by activated T cells. It plays an important role in the activation and proliferation of T lymphocytes. Recently, some co-stimulatory molecules have been shown to direct leukocyte trafficking. Chemotaxis is essential for achieving an effective immune response. CCL20 is an important chemoattractant produced by activated T cells. In this study, using DO11.10 mice whose transgenic T cell receptor specifically recognizes ovalbumin, we demonstrate that ovalbumin induces OX40 expression in CD4+ lymphocytes. Further stimulation of OX40 by OX40 activating antibody up-regulates CCL20 production. Both NF-κB dependent and independent signaling pathways are implicated in the induction of CCL20 by OX40. Finally, we primed the DO11.10 splenocytes with or without OX40 activating antibody in the presence of ovalbumin. Intranasal administration of the cell lysates derived from the cells with OX40 stimulation results in more severe leukocyte infiltration in the lung of DO11.10 mice, which is substantially attenuated by CCL20 blocking antibody. Taken together, this study has shown that activation of OX40 induces CCL20 expression in the presence of antigen stimulation. Thus, our results broaden the role of OX40 in chemotaxis, and reveal a novel effect of co-stimulatory molecules in orchestrating both T cell up-regulation and migration.
AB - OX40 is an inducible co-stimulatory molecule expressed by activated T cells. It plays an important role in the activation and proliferation of T lymphocytes. Recently, some co-stimulatory molecules have been shown to direct leukocyte trafficking. Chemotaxis is essential for achieving an effective immune response. CCL20 is an important chemoattractant produced by activated T cells. In this study, using DO11.10 mice whose transgenic T cell receptor specifically recognizes ovalbumin, we demonstrate that ovalbumin induces OX40 expression in CD4+ lymphocytes. Further stimulation of OX40 by OX40 activating antibody up-regulates CCL20 production. Both NF-κB dependent and independent signaling pathways are implicated in the induction of CCL20 by OX40. Finally, we primed the DO11.10 splenocytes with or without OX40 activating antibody in the presence of ovalbumin. Intranasal administration of the cell lysates derived from the cells with OX40 stimulation results in more severe leukocyte infiltration in the lung of DO11.10 mice, which is substantially attenuated by CCL20 blocking antibody. Taken together, this study has shown that activation of OX40 induces CCL20 expression in the presence of antigen stimulation. Thus, our results broaden the role of OX40 in chemotaxis, and reveal a novel effect of co-stimulatory molecules in orchestrating both T cell up-regulation and migration.
KW - CCL20
KW - CD4+ T cells
KW - Co-stimulatory molecule
KW - OX40
KW - T cell co-stimulation
UR - http://www.scopus.com/inward/record.url?scp=77952553943&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77952553943&partnerID=8YFLogxK
U2 - 10.1016/j.cyto.2010.03.021
DO - 10.1016/j.cyto.2010.03.021
M3 - Article
C2 - 20400327
AN - SCOPUS:77952553943
SN - 1043-4666
VL - 50
SP - 253
EP - 259
JO - Cytokine
JF - Cytokine
IS - 3
ER -