Cross-priming utilizes antigen not available to the direct presentation pathway
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چکیده
منابع مشابه
Antigen Processing and Remodeling of the Endosomal Pathway: Requirements for Antigen Cross-Presentation
Cross-presentation of endocytosed antigen as peptide/class I major histocompatibility complex complexes plays a central role in the elicitation of CD8(+) T cell clones that mediate anti-viral and anti-tumor immune responses. While it has been clear that there are specific subsets of professional antigen presenting cells capable of antigen cross-presentation, identification of mechanisms involve...
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MHC class I molecules present peptides from endogenous proteins. Ags can also be presented when derived from extracellular sources in the form of apoptotic bodies. Cross-presentation of such Ags by dendritic cells is required for proper CTL responses. The fate of Ags in cells initiated for apoptosis is unclear as is the mechanism of apoptosis-derived Ag transfer into dendritic cells. Here we sh...
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Antiviral CD8(+) T cell recognition of MHC class I-peptide complexes on the surface of professional APCs is a requisite step in an effective immune response following many potentially lethal infections. Although MHC class I-peptide production is thought to be closely linked to the continued presence of virus, several studies have shown that the persistence of Ag presentation occurs for an exten...
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It is generally believed that most tumor antigens are passively released from either health or dying tumor cells as intact soluble antigens, peptide fragments complexed with heat shock proteins (HSPs), or packaged in secretary vesicles in the form of microparticles or exosomes. The passive release of tumor antigens is generally non-inflammatory and non-immunogenic; however, results from others ...
متن کاملSec61 in antigen cross-presentation
Upon recognition of antigens in the peripheral tissue, dendritic cells (DCs) migrate toward the draining lymph node to present internalized and processed antigens on major histocompatibility complex (MHC) molecules to T cells. In a process termed cross-presentation, antigenderived peptides are presented on MHC I molecules to cytotoxic T cells. Cross-presentation has been shown to be of crucial ...
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ژورنال
عنوان ژورنال: Immunology
سال: 2006
ISSN: 0019-2805,1365-2567
DOI: 10.1111/j.1365-2567.2006.02406.x