References
Query Results -- Details
MGI Accession ID: MGI:3531240
J Number: J:96675
Other Accession IDs:
Title: Bone marrow is a major reservoir and site of recruitment for central memory CD8+ T cells.
Authors: Mazo IB; Honczarenko M; Leung H; Cavanagh LL; Bonasio R; Weninger W; Engelke K; Xia L; McEver RP; Koni PA; Silberstein LE; von Andrian UH
Journal: Immunity
Volume: 22
Issue: 2
Date: 2005 Feb
Year: 2005
Pages: 259-70
Review Status: Peer Reviewed
Abstract:
Normal bone marrow (BM) contains T cells whose function and origin are poorly understood. We observed that CD8+ T cells in BM consist chiefly of CCR7+ L-selectin+ central memory cells (TCMs). Adoptively transferred TCMs accumulated more efficiently in the BM than naive and effector T cells. Intravital microscopy (IVM) showed that TCMs roll efficiently in BM microvessels via L-, P-, and E-selectin, whereas firm arrest required the VCAM-1/alpha4beta1 pathway. alpha4beta1 integrin activation did not depend on pertussis toxin (PTX)-sensitive Galphai proteins but was reduced by anti-CXCL12. In contrast, TCM diapedesis did not require CXCL12 but was blocked by PTX. After extravasation, TCMs displayed agile movement within BM cavities, remained viable, and mounted potent antigen-specific recall responses for at least two months. Thus, the BM functions as a major reservoir for TCMs by providing specific recruitment signals that act in sequence to mediate the constitutive recruitment of TCMs from the blood.
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