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Transcription factor KLF2 regulates the migration of naive T cells by restricting chemokine receptor expression

Eric Sebzda1, Zhiying Zou, John S Lee

  • 1Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. eric.sebzda@vanderbilt.edu

Nature Immunology
|February 5, 2008
PubMed

Insights

Krupple-like factor 2 (KLF2) prevents naive T cells from expressing inflammatory chemokine receptors. Deleting KLF2 alters T cell migration and chemokine receptor expression, impacting immune cell distribution.

Area of Science:

  • Immunology
  • Molecular Biology
  • Transcriptional Regulation

Background:

  • T cell migration is crucial for immune surveillance and is regulated by chemokine receptors.
  • The molecular mechanisms controlling chemokine receptor expression and T cell migration patterns remain largely unknown.

Purpose of the Study:

  • To identify key transcriptional factors regulating T cell migration patterns.
  • To elucidate the role of Krupple-like factor 2 (KLF2) in controlling naive T cell chemokine receptor expression and migration.

Main Methods:

  • Lineage-specific deletion of the KLF2 gene in T cells.
  • Analysis of T cell populations in blood, lymphoid organs, and nonlymphoid tissues.
  • Quantitative assessment of chemokine receptor expression (e.g., CCR3, CCR5) on T cells.

Main Results:

  • KLF2 deletion in T cells led to reduced naive T cell numbers in lymphoid organs but increased numbers in nonlymphoid tissues.
  • Altered expression of inflammatory chemokine receptors, including CCR3 and CCR5, was observed on naive T cells lacking KLF2.
  • KLF2 was identified as a transcriptional repressor of specific chemokine receptors.

Conclusions:

  • KLF2 is a critical regulator of naive T cell migration patterns.
  • KLF2 maintains immune cell homeostasis by controlling chemokine receptor expression.
  • KLF2 links transcriptional regulation to T cell trafficking and immune responses.

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