Developmental Stage, Phenotype, and Migration Distinguish Naive- and Effector/Memory-like CD4+ Regulatory T Cells

J. Huehn,K. Siegmund,J. Lehmann,C. Siewert,U. Haubold,M. Feuerer,G. Debes,J. Lauber,O. Frey,G. Przybylski,U. Niesner,Maurus de la Rosa,C. Schmidt,R. Bräuer,J. Buer,A. Scheffold,A. Hamann

Published 2004 in Journal of Experimental Medicine

ABSTRACT

Regulatory T cells (Tregs) fulfill a central role in immune regulation. We reported previously that the integrin αEβ7 discriminates distinct subsets of murine CD4+ regulatory T cells. Use of this marker has now helped to unravel a fundamental dichotomy among regulatory T cells. αE −CD25+ cells expressed L-selectin and CCR7, enabling recirculation through lymphoid tissues. In contrast, αE-positive subsets (CD25+ and CD25−) displayed an effector/memory phenotype expressing high levels of E/P-selectin–binding ligands, multiple adhesion molecules as well as receptors for inflammatory chemokines, allowing efficient migration into inflamed sites. Accordingly, αE-expressing cells were found to be the most potent suppressors of inflammatory processes in disease models such as antigen-induced arthritis.

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