| Literature DB >> 16740321 |
Julie M Johnson-Nauroth1, Jerome Graber, Karen Yao, Steve Jacobson, Peter A Calabresi.
Abstract
Cytotoxic memory T cells play a critical role in combating viral infections; however, in some diseases they may contribute to tissue damage. In HAM/TSP, HTLV-1 Tax 11-19+ cells proliferate spontaneously in vitro and can be tracked using the Tax 11-19 MHC Class I tetramer. Immediately ex vivo, these cells were a mix of CD45RA-/CCR7- TEM and CD45RA+/CCR7- TDiff memory CTL. The subsequent proliferating Tax 11-19 tetramer+ population expressed low levels of IL-7Ralpha, failed to respond to IL-7 and IL-15, and did not develop a TCM phenotype. Thus, chronic exposure to viral antigen may result in a sustained pool of TEM cells that home to the CNS and mediate the spinal cord pathology seen in this disease.Entities:
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Year: 2006 PMID: 16740321 PMCID: PMC4988392 DOI: 10.1016/j.jneuroim.2006.03.013
Source DB: PubMed Journal: J Neuroimmunol ISSN: 0165-5728 Impact factor: 3.478