The role of CCR7 in TH1 and TH2 cell localization and delivery of B cell help in vivo.
basic_science · Level V
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Abstract
Subsets of murine CD4+ T cells localize to different areas of the spleen after adoptive transfer. Naïve and T helper 1 (TH1) cells, which express the chemokine receptor CCR7, are home to the periarteriolar lymphoid sheath, whereas activated TH2 cells, which lack CCR7, form rings at the periphery of the T cell zones near B cell follicles. Retroviral transduction of TH2 cells with CCR7 forces them to localize in a TH1-like pattern and inhibits their participation in B cell help in vivo but not in vitro. Thus, differential expression of chemokine receptors results in unique cellular migration patterns that are important for effective immune responses.
Medical subject headings
- B-Lymphocytes
- Receptors, Chemokine
- Spleen
- Th1 Cells
- Th2 Cells