Work

Antigen-induced Erk1/2 activation regulates Ets-1-mediated sensitization of CD8+ T cells for IL-12 responses

Year: 2009

Type: article

Abstract: The presence of IL-12 during antigen stimulation instructs naive CD8+ T cells for long-term effector responses, but their mechanisms of collaboration are not understood completely. Herein, we report that CD8+ T cells (OT-I T cells) stimulated with antigen for a longer duration show enhanced sensitization to IL-12 as a result of Erk1/2-dependent, increased Ets-1 phosphorylation and subsequent increases in IL-12Rbeta2 expression. Correspondingly, naive OT-I T cells stimulated by antigen for a longer duration in the presence of IL-12, irrespective of frequency of APCs, show robust effector maturation and mount long-term antigen-recall responses upon adoptive transfer. These results identify the role of antigen strength-dependent Erk1/2 activation for Ets-1-mediated collaboration with IL-12 in CD8+ T cells.

Source: Journal of Leukocyte Biology

DOI: 10.1189/jlb.0409221

Authors: Qingsheng Li, Cheryl Eppolito, Kunle Odunsi, Protul A Shrikant

Institution: Roswell Park Comprehensive Cancer Center

Language: English

Topic: T-cell and B-cell Immunology

Subfield: Immunology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: green

Funders: National Institutes of Health, National Cancer Institute