Abstract:
:The absence of expanded numbers of hepatitis C virus (HCV)-reactive CD8(+) T lymphocytes (CTLs) in patients chronically infected with HCV has led to the investigation of dendritic cell (DC) function in this population as a potential cause for this defect. Several studies have shown evidence for impaired monocyte-derived DCs in chronically infected patients. As it is difficult to reconcile these data with the fact that patients with chronic HCV are immune competent, we re-evaluated this finding, carefully assessing phenotypic markers and functional activity of patient DCs as compared with noninfected controls. In contrast to these prior studies, DCs from 13 of 13 chronic HCV patients expressed typical maturation markers. These mature DCs were capable of priming allogeneic T lymphocytes, as well as stimulating influenza-specific memory T cells. This finding is consistent with clinical and immunologic data that the deficit in the patient's immune repertoire is HCV-specific and suggests that refined models are required for understanding the role of DCs in HCV pathogenesis.
journal_name
Bloodjournal_title
Bloodauthors
Longman RS,Talal AH,Jacobson IM,Albert ML,Rice CMdoi
10.1182/blood-2003-04-1339subject
Has Abstractpub_date
2004-02-01 00:00:00pages
1026-9issue
3eissn
0006-4971issn
1528-0020pii
2003-04-1339journal_volume
103pub_type
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