IL-12 selectively programs effector pathways that are stably expressed in human CD8 + effector memory T cells in vivo

Fatema Z. Chowdhury, Hilario J. Ramos, Laurie S. Davis, James Forman, J. David Farrar

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

CD8 + cytotoxic T lymphocytes play a major role in defense against intracellular pathogens, and their functions are specified by antigen recognition and innate cytokines. IL-12 and IFN-α/β are potent "signal 3" cytokines that are involved in both effector and memory cell development. Although the majority of effector cells are eliminated as inflammation resolves, some survive within the pool of memory cells and retain immediate effector function. In this study, we demonstrate that IL-12 instructs a unique program of effector cell differentiation that is distinct from IFN-α/β. Moreover, effector memory (T EM) cells within peripheral blood display many common attributes of cells differentiated in vitro in response to IL-12, including proinflammatory cytokine secretion and lytic activity. A pattern of IL-12-induced genes was identified that demarcate T EM from central memory cells, and the ontologies of these genes correlated precisely with their effector functions. Further, we uncovered a unique program of gene expression that was acutely regulated by IL-12 and reflected in stable gene expression patterns within T EM, but not T central memory cells in vivo. Thus, this study directly links a selective set of IL-12-induced genes to the programming of effector functions within the stable population of human CD8 + T EM cells in vivo.

Original languageEnglish (US)
Pages (from-to)3890-3900
Number of pages11
JournalBlood
Volume118
Issue number14
DOIs
StatePublished - Oct 6 2011

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T-cells
Interleukin-12
T-Lymphocytes
Data storage equipment
Genes
Cytokines
Gene expression
Computer peripheral equipment
Pathogens
Gene Expression
Gene Ontology
Ontology
Population Dynamics
Cytotoxic T-Lymphocytes
Blood
Antigens
Cell Differentiation
Inflammation

ASJC Scopus subject areas

  • Hematology
  • Biochemistry
  • Cell Biology
  • Immunology

Cite this

IL-12 selectively programs effector pathways that are stably expressed in human CD8 + effector memory T cells in vivo. / Chowdhury, Fatema Z.; Ramos, Hilario J.; Davis, Laurie S.; Forman, James; Farrar, J. David.

In: Blood, Vol. 118, No. 14, 06.10.2011, p. 3890-3900.

Research output: Contribution to journalArticle

Chowdhury, Fatema Z. ; Ramos, Hilario J. ; Davis, Laurie S. ; Forman, James ; Farrar, J. David. / IL-12 selectively programs effector pathways that are stably expressed in human CD8 + effector memory T cells in vivo. In: Blood. 2011 ; Vol. 118, No. 14. pp. 3890-3900.
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