First Author | Baccala R | Year | 2005 |
Journal | J Immunol | Volume | 174 |
Issue | 8 | Pages | 4606-12 |
PubMed ID | 15814683 | Mgi Jnum | J:98166 |
Mgi Id | MGI:3577563 | Doi | 10.4049/jimmunol.174.8.4606 |
Citation | Baccala R, et al. (2005) Gamma delta T cell homeostasis is controlled by IL-7 and IL-15 together with subset-specific factors. J Immunol 174(8):4606-12 |
abstractText | Among T cell subsets, gamma delta T cells uniquely display an Ag receptor-based tissue distribution, but what defines their preferential homing and homeostasis is unknown. To address this question, we studied the resources that control gamma delta T cell homeostasis in secondary lymphoid organs. We found that gamma delta and alpha beta T cells are controlled by partially overlapping resources, because acute homeostatic proliferation of gamma delta T cells was inhibited by an intact alpha beta T cell compartment, and both populations were dependent on IL-7 and IL-15. Significantly, to undergo acute homeostatic proliferation, gamma delta T cells also required their own depletion. Thus, gamma delta T cell homeostasis is maintained by trophic cytokines commonly used by other types of lymphoid cells, as well as by additional, as yet unidentified, gamma delta-specific factors. |