2003
DOI: 10.1038/sj.bjc.6600694
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Effector CD8+CD45RO−CD27−T cells have signalling defects in patients with squamous cell carcinoma of the head and neck

Abstract: A subset of circulating T cells (CD8 + CD45RO À CD27 À ) with a naïve phenotype, but mediating effector function, is considered to play an important role in host antitumour defence. To investigate the attributes of these effector T cells in patients with squamous cell carcinoma (SCC) of the head and neck cancer, venous blood was obtained from 39 individuals with cancer and 45 normal controls (NC). Peripheral blood mononuclear cells were isolated, stained with labelled monoclonal antibodies specific for CD8, CD… Show more

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Cited by 67 publications
(48 citation statements)
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“…The timing of Annexin V positivity correlates with other models of senescent-like phenotypes (19). Increases in Annexin V have been documented in CD27 À or CD28 À peripheral blood T cells in patients with cancer and in the aging population (37,38). One group found that after successful resection of head and neck tumors, the number of CD3 + CD28 À cells decreased (7).…”
Section: Discussionmentioning
confidence: 93%
“…The timing of Annexin V positivity correlates with other models of senescent-like phenotypes (19). Increases in Annexin V have been documented in CD27 À or CD28 À peripheral blood T cells in patients with cancer and in the aging population (37,38). One group found that after successful resection of head and neck tumors, the number of CD3 + CD28 À cells decreased (7).…”
Section: Discussionmentioning
confidence: 93%
“…Removal of HPVϩ tumors then removes this antigen source, whereas DCs may present antigen for prolonged periods of time, perhaps continuing to prime CTL (36). Also, because DC are known to prime the most active and long-lived T cells phenotypically, potentially preventing terminal differentiation leading to premature apoptosis in cancer patients (37), this is one potential explanation for differential fate of T cells generated after the removal of HPVϩ versus HPVϪ tumors. We are currently pursuing this issue mechanistically, in future experiments analyzing PBMCs from such squamous cell carcinoma of the head and neck patient populations.…”
Section: Discussionmentioning
confidence: 99%
“…44 Interestingly, in such patients, the accelerated turnover of differentiated T cells, compared with naive T lymphocytes, has been correlated to the increased susceptibility to apoptosis of cells at the effector stage. 45 On the other hand, we did not find evidence for increased annexin V binding in CCR7 Ϫ T cells from patients of this study, compared with CCR7 ϩ cells, as it may be expected to support an increased rate of elimination, by apoptosis, of differentiated T cells.…”
Section: Discussionmentioning
confidence: 40%