Expression of the transcription factor lung Kruppel-like factor is regulated by cytokines and correlates with survival memory T cells in vitro and in vivo

Sonya L. Schober, Kuo Chay T, Kimberly S. Schluns, Leo Lefrancois, Jeffrey M. Leiden, Stephen C. Jameson

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

The transcription factor lung Kruppel-like factor (LKLF) is involved in naive T cell survival. Expression of LKLF is rapidly down-regulated upon T cell stimulation, raising the question of whether LKLF is reexpressed after activation, and what factors are required for such reexpression. Furthermore, the expression of LKLF in resting memory cells has not been determined. Here, we use the OT-I TCR transgenic mouse system to address these issues. LKLF was found to be reexpressed following culture of activated CD8 T cells in certain cytokines (IL-2, IL-7) but not others (IL-12) known to influence CTL development. Interestingly, induction of LKLF reexpression corresponded with long-term T cell survival and development of memory T cell phenotype. Furthermore, using OT-I cells stimulated in vivo, we demonstrated that Ag induced rapid LKLF down-regulation and that the factor is expressed by in vivo-derived memory T cells.

Original languageEnglish (US)
Pages (from-to)3662-3667
Number of pages6
JournalJournal of Immunology
Volume163
Issue number7
StatePublished - Oct 1 1999

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