[HTML][HTML] Expression of cutaneous lymphocyte-associated antigen by CD8+ T cells specific for a skin-tropic virus

DM Koelle, Z Liu, CM McClurkan… - The Journal of …, 2002 - Am Soc Clin Investig
DM Koelle, Z Liu, CM McClurkan, MS Topp, SR Riddell, EG Pamer, AS Johnson, A Wald
The Journal of clinical investigation, 2002Am Soc Clin Investig
Virus-specific CD8+ T cells traffic to infected tissues to promote clearance of infection. We
used herpes simplex virus type 2 (HSV-2) as a model system to investigate CD8+ T cell
trafficking to the skin in humans. Using human leukocyte antigen (HLA) class I tetramers, we
observed that HSV-specific CD8+ T cells in the peripheral blood expressed high levels of
cutaneous lymphocyte-associated antigen (CLA). In contrast, CD8+ T cells specific for non–
skin-tropic herpesviruses lacked CLA expression. CLA-positive HSV-2–specific CD8+ T …
Virus-specific CD8+ T cells traffic to infected tissues to promote clearance of infection. We used herpes simplex virus type 2 (HSV-2) as a model system to investigate CD8+ T cell trafficking to the skin in humans. Using human leukocyte antigen (HLA) class I tetramers, we observed that HSV-specific CD8+ T cells in the peripheral blood expressed high levels of cutaneous lymphocyte-associated antigen (CLA). In contrast, CD8+ T cells specific for non–skin-tropic herpesviruses lacked CLA expression. CLA-positive HSV-2–specific CD8+ T cells had the characteristics of central memory cells, expressing CCR7, CD62L, and CD28, and they proliferated briskly in response to antigen. CLA is related to a functional E-selectin ligand, and both E-selectin and CLA-positive cells were detected in HSV-2–infected skin. HSV-2–specific T cells adhered to cells transfected with E-selectin. A higher proportion of HSV-specific CD8+ T cells recovered from herpes lesions express CLA compared with blood, consistent with a role for CLA in skin homing. To our knowledge, this is the first report of expression of tissue-specific adhesion-associated molecules by virus-specific CD8+ T cells. The evaluation of vaccines for skin and mucosal pathogens should include study of the induction of appropriate tissue-specific homing molecules.
The Journal of Clinical Investigation