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CCR7 plays no appreciable role in trafficking of central memory CD4 T cells to lymph nodes.

Authors :
Vander Lugt B
Tubo NJ
Nizza ST
Boes M
Malissen B
Fuhlbrigge RC
Kupper TS
Campbell JJ
Source :
Journal of immunology (Baltimore, Md. : 1950) [J Immunol] 2013 Sep 15; Vol. 191 (6), pp. 3119-27. Date of Electronic Publication: 2013 Aug 09.
Publication Year :
2013

Abstract

CCR7⁻/⁻ mice exhibit profound anomalies in lymph node and spleen architecture, which complicates the study of CCR7-mediated T cell trafficking in vivo. To circumvent this problem, we established in vivo models in which wild-type and CCR7⁻/⁻ populations coexist within mice possessing normal lymphoid organs and must compete for developmental niches within the tissues of these mice. Under the conditions we have created in vivo, we find the entry of memory CD4 T cells into lymph nodes from the blood to be independent of CCR7. Thus, the central memory CD4 T cells that traffic though lymph nodes, which are often defined by their expression of CCR7, do not appear to gain any competitive homing advantage by expressing this receptor. Furthermore, in contrast to cutaneous dendritic cell populations, we found that CCR7 deficiency had no appreciable effect on the exit of CD4 T cells from inflamed skin. Finally, we found that wild-type and CCR7⁻/⁻ precursors were equally represented within the major thymic subpopulations, despite previous findings that CCR7 plays a role in seeding the thymus from bone marrow-derived T cell precursors.

Details

Language :
English
ISSN :
1550-6606
Volume :
191
Issue :
6
Database :
MEDLINE
Journal :
Journal of immunology (Baltimore, Md. : 1950)
Publication Type :
Academic Journal
Accession number :
23935190
Full Text :
https://doi.org/10.4049/jimmunol.1200938