Abstract:
:Type I IFN and IL-12 are well documented to serve as so called "signal 3" cytokines, capable of facilitating CD8(+) T cell proliferation, effector function and memory formation. While their ability to serve in this capacity is well established, to date, no non-cytokine signal 3 mediators have been clearly identified. We have established a vaccine model system in which the primary CD8(+) T cell response is independent of either IL-12 or type I IFN receptors, but dependent on CD27/CD70 interactions. We show here that primary and secondary CD8(+) T cell responses are generated in the combined deficiency of IFN and IL-12 signaling. In contrast, antigen specific CD8(+) T cell responses are compromised in the absence of the TNF receptors CD27 and OX40. These data indicate that CD27/OX40 can serve the central function as signal 3 mediators, independent of IFN or IL-12, for the generation of CD8(+) T cell immune memory.
journal_name
Vaccinejournal_title
Vaccineauthors
Sanchez PJ,Kedl RMdoi
10.1016/j.vaccine.2011.12.017subject
Has Abstractpub_date
2012-02-01 00:00:00pages
1154-61issue
6eissn
0264-410Xissn
1873-2518pii
S0264-410X(11)01940-2journal_volume
30pub_type
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