Palendira, U., Chinn, R., Raza, W., Piper, K., Pratt, G., Machado, L., Bell, A., Khan, N., Hislop, A., Steyn, R., Rickinson, A., Buckley, C. and Moss, P. (2008) Selective accumulation of virus-specific CD8+ T cells with unique homing phenotype within the human bone marrow. Blood. 112(8), pp. 3293-3302. 0006-4971.
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Abstract:
The bone marrow plays a unique role within the immune system. We compared the phenotype and function of virus-specific CD8(+) T cells from matched samples of human peripheral blood and bone marrow. Analysis of virus-specific memory CD8(+) T cells showed widely divergent partition of antigen-specific population between blood and bone marrow. T cells specific for Epstein-Barr virus (EBV) lytic antigens were enriched 3-fold in marrow compared with blood, whereas the response to EBV latent epitopes was equivalent between the 2 compartments. No difference in EBV viral load or expression of the EBV lytic protein was observed between blood and bone marrow. In direct contrast, although cytomegalovirus (CMV)–specific T cells were the largest virus-specific population within peripheral blood, they were reduced by 60% within marrow. Bone marrow T cells were found to exhibit a unique CCR5(+)CXCR6(+)CXCR3(-) homing phenotype which has not been observed on T cells from other secondary lymphoid organs or peripheral organs. Expression of CCR5 and CXCR6 was higher on EBV-specific T cells within peripheral blood compared with CMV-specific populations. These observations identify a novel bone marrow homing phenotype for CD8(+) memory T cells, which necessitates a reevaluation of the magnitude of antigen-specific populations within the lymphoid system.
Subjects:
Creators:
Palendira, U., Chinn, R., Raza, W., Piper, K., Pratt, G., Machado, L., Bell, A., Khan, N., Hislop, A., Steyn, R., Rickinson, A., Buckley, C. and Moss, P.
Publisher:
American Society of Hematology
Northamptonshire and East Midlands:
Health
Faculties, Divisions and Institutes:
University Faculties, Divisions and Research Centres - OLD > Faculty of Health & Society
University Faculties, Divisions and Research Centres - OLD > Research Centre > Institute of Health and Wellbeing > Ageing Research Centre
Research Centres > Centre for Health Sciences and Services
Research Centres > Centre for Physical Activity and Life Sciences
University Faculties, Divisions and Research Centres - OLD > Research Centre > Institute of Health and Wellbeing > Ageing Research Centre
Research Centres > Centre for Health Sciences and Services
Research Centres > Centre for Physical Activity and Life Sciences
Date:
15 October 2008
Date Type:
Publication
Page Range:
pp. 3293-3302
Journal or Publication Title:
Blood
Volume:
112
Number:
8
Language:
English
ISSN:
0006-4971
Status:
Published / Disseminated
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