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DC-expressed MHC class I single-chain trimer-based vaccines prime cytotoxic T lymphocytes against exogenous but not endogenous antigens.

Abstract：

:The poor immunogenicity of many tumors can be partly explained by the inefficiency of the MHC class I peptide presentation pathway. MHC-I-based single-chain trimers (SCT) represent a new class of molecules with the potential to overcome this limitation. We here evaluated the ability of SCT presenting a melanoma antigen peptide (TRP-2) to prime cytotoxic T lymphocyte (CTL) responses in mice when given as DNA vaccines via Gene Gun or when expressed by dendritic cells. The SCT was unable to induce detectable priming or significant anti-tumor activity of CTL using either vaccination strategy, whereas control SCT (with an exogenous peptide) primed strong responses. This study thus provides the first data related to the use of SCT in combination with DC and their application toward self antigens and suggest this potent technology, alone, is insufficient to overcome self tolerance.

journal_name

Cell Immunol

journal_title

Cellular immunology

authors

Ordaz ML,Larmonier N,Lybarger L

doi

10.1016/j.cellimm.2010.02.006

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

141-9

issue

2

eissn

0008-8749

issn

1090-2163

pii

S0008-8749(10)00036-5

journal_volume

262

pub_type

杂志文章

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