Abstract:
:Loading of most endogenous peptides on major histocompatibility complex class I molecules is conditional on their transport into the endoplasmic reticulum (ER) by the peptide transporter TAP. We describe an HSV-2/1 cross-reactive cytotoxic T-cell (CTL) epitope that is processed in a TAP1-independent manner in vivo following immunization of TAP1-/- mice with naked DNA or a recombinant vaccinia virus. These data indicated that TAP1-independent processing of endogenous proteins is sufficient to prime CTLs in vivo. TAP1-independent processing of this epitope was not due to ER targeting by signal sequences and exogenous loading of MHC-I molecules and was not influenced by the amino acids flanking this epitope. In contrast, TAP1-/- mice infected with HSV-2 or HSV-2 mutants did not mount a CTL response against this epitope.
journal_name
Virologyjournal_title
Virologyauthors
Paliard X,Doe B,Selby MJ,Hartog K,Lee AY,Burke RL,Walker CMdoi
10.1006/viro.2000.0829subject
Has Abstractpub_date
2001-03-30 00:00:00pages
56-64issue
1eissn
0042-6822issn
1096-0341pii
S0042-6822(00)90829-8journal_volume
282pub_type
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