Publications
Unique features of naive CD8+ T cell activation by IL-2
Abstract
IL-2 has a pervasive influence on the immune system and dictates the survival and differentiation of multiple T cell subsets, including CD4 regulatory T cells, CD4 Th cells, and CD8 memory cells. IL-2 is synthesized by T cells during the early stages of the immune response and promotes T cell expansion and effector cell generation after initial activation via TCR signaling. Based on studies with activated T cell lines maintained in vitro, IL-2 is known to activate multiple signaling pathways that show considerable overlap with the pathways elicited via the TCR. In this paper, we have examined IL-2 signaling under TCR-independent conditions, namely by culturing purified resting naive CD8 T cells with IL-2 in the absence of Ag or APC. Under these conditions, we show in this study that IL-2 elicits a unique pattern of signaling associated with strong lymphocyte-specific protein tyrosine kinase/JAK3-dependent activation of the PI3K/AKT pathway with little or no involvement of STAT5, NF-kappaB, or the calcineurin/NFAT pathways. Such signaling induces marked proliferation associated with rapid and selective expression of eomesodermin but not T-bet and differentiation into long-lived central memory cells after adoptive transfer.
Type | Journal |
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Authors | Cho, J. H.; Kim, H. O.; Kim, K. S.; Yang, D. H.; Surh, C. D.; Sprent, J.; |
Responsible Garvan Author | (missing name) |
Publisher Name | JOURNAL OF IMMUNOLOGY |
Published Date | 2013-12-01 |
Published Volume | 191 |
Published Issue | 11 |
Published Pages | 5559-73 |
Status | Published in-print |
DOI | 10.4049/jimmunol.1302293 |
URL link to publisher's version | http://www.ncbi.nlm.nih.gov/pubmed/24166977 |
OpenAccess link to author's accepted manuscript version | https://publications.gimr.garvan.org.au/open-access/12060 |