Abstract:
:CD8(+) T cell-numbers rapidly expand and then contract after exposure to their cognate antigen. Here we show that the sustained frequencies of transgene product-specific CD8(+) T cells elicited by replication-defective adenovirus vectors are linked to persistence of low levels of transcriptionally active adenovirus vector genomes at the site of inoculation, in liver, and lymphatic tissues. Continuously produced small amounts of antigen maintain fully active effector CD8(+) T cells, while also allowing for their differentiation into central memory cells. The long-term persistence of adenoviral vectors may be highly advantageous for their use as vaccines against pathogens for which T-cell-mediated protection requires both fully activated T cells for immediate control of virus-infected cells and central memory CD8(+) T cells that, because of their higher proliferative capacity, may be suited best to eliminate cells infected by pathogens that escaped the initial wave of effector T cells.
journal_name
Bloodjournal_title
Bloodauthors
Tatsis N,Fitzgerald JC,Reyes-Sandoval A,Harris-McCoy KC,Hensley SE,Zhou D,Lin SW,Bian A,Xiang ZQ,Iparraguirre A,Lopez-Camacho C,Wherry EJ,Ertl HCdoi
10.1182/blood-2007-02-062117subject
Has Abstractpub_date
2007-09-15 00:00:00pages
1916-23issue
6eissn
0006-4971issn
1528-0020pii
blood-2007-02-062117journal_volume
110pub_type
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