The Journal of Experimental Medicine
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Published 4 February 2002. doi:10.1084/jem.20011558
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© Rockefeller University Press, 0022-1007/2002/2/317/ $5.00
The Journal of Experimental Medicine, Volume 195, Number 3, February 4, 2002 317-326

Original Article

 Differential T Cell Function and Fate in Lymph Node and Nonlymphoid Tissues

Nicola L. Harris, Victoria Watt, Franca Ronchese and Graham Le Gros

Malaghan Institute of Medical Research, Wellington School of Medicine, 6002 Wellington, New Zealand

Address correspondence to Nicola L. Harris, Malaghan Institute of Medical Research, PO Box 7060, Wellington South, New Zealand. Phone: 64 4 389 5096; Fax: 64 4 389 5095; E-mail: nharris{at}malaghan.org.nz

The functions and fate of antigen-experienced T cells isolated from lymph node or nonlymphoid tissues were analyzed in a system involving adoptive transfer of in vitro–activated T cells into mice. Activated T cells present in the lymph nodes could be stimulated by antigen to divide, produce effector cytokines, and migrate to peripheral tissues. By contrast, activated T cells that had migrated into nonlymphoid tissues (lung and airway) produced substantial effector cytokines upon antigen challenge, but were completely unable to divide or migrate back to the lymph nodes. Therefore, activated T cells can undergo clonal expansion in the lymph node, but are recruited and retained as nondividing cells in nonlymphoid tissues. These distinct regulatory events in lymph node and nonlymphoid tissues reveal simple key mechanisms for both inducing and limiting T cell immunity.

Key Words: T cell • lung • cell migration • cell division • cytokines


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