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Distinct Roles for IL-2 and IL-15 in the Differentiation and Survival of CD8+ Effector and Memory T Cells

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Journal J Immunol
Date 2010 May 21
PMID 20483725
Citations 64
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Abstract

IL-2 provides a memory differentiation signal to CD8+ T cells during the primary response that impacts the ability of the subsequent memory pool to mount a successful recall response. In this study, we find that although primary effector CTL development is modestly decreased in the absence of IL-2, the persistence of short-term and long-term effector memory CD8+ T cells on pathogen clearance is greatly diminished. Furthermore, secondary challenge of CD8+ memory T cells lacking the high-avidity IL-2R results in a failure to repopulate the effector pool. The role of IL-2 in promoting effector differentiation is not shared with the highly related cytokine, IL-15. Although IL-15 supports the survival of effector CD8+ T cells after pathogen clearance, its absence does not impair either primary or secondary effector CTL differentiation, nor does it impact the differentiation of long-term effector memory CD8+ T cells. These findings indicate a unique role for IL-2, but not IL-15, in promoting the differentiation not only of primary effector CD8+ T cells, but also of CD8+ memory T cells capable of secondary effector differentiation.

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References
1.
Shin H, Blackburn S, Intlekofer A, Kao C, Angelosanto J, Reiner S . A role for the transcriptional repressor Blimp-1 in CD8(+) T cell exhaustion during chronic viral infection. Immunity. 2009; 31(2):309-20. PMC: 2747257. DOI: 10.1016/j.immuni.2009.06.019. View

2.
Rubinstein M, Lind N, Purton J, Filippou P, Best J, McGhee P . IL-7 and IL-15 differentially regulate CD8+ T-cell subsets during contraction of the immune response. Blood. 2008; 112(9):3704-12. PMC: 2572798. DOI: 10.1182/blood-2008-06-160945. View

3.
Manjunath N, Shankar P, Wan J, Weninger W, Crowley M, Hieshima K . Effector differentiation is not prerequisite for generation of memory cytotoxic T lymphocytes. J Clin Invest. 2001; 108(6):871-8. PMC: 200936. DOI: 10.1172/JCI13296. View

4.
Rosenberg S, Yang J, Topalian S, Schwartzentruber D, Weber J, Parkinson D . Treatment of 283 consecutive patients with metastatic melanoma or renal cell cancer using high-dose bolus interleukin 2. JAMA. 1994; 271(12):907-13. View

5.
Leone A, Picker L, Sodora D . IL-2, IL-7 and IL-15 as immuno-modulators during SIV/HIV vaccination and treatment. Curr HIV Res. 2009; 7(1):83-90. DOI: 10.2174/157016209787048519. View