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Immunol Rev. 2005 Oct;207:145-57.

Mechanisms of MHC class I-restricted antigen processing and cross-presentation.

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1
Section of Immunobiology, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06520, USA. peter.cresswell@yale.edu

Abstract

In this review, we discuss recent data from our laboratory that address two aspects of major histocompatibility complex (MHC) class I-restricted antigen processing. First, we consider the nature of the peptide-loading complex, which is the assembly of proteins in the endoplasmic reticulum (ER) into which newly synthesized MHC class I-beta(2) microglobulin (beta(2)m) heterodimers are incorporated, and the mechanisms involved in MHC class I assembly and peptide loading that are facilitated by the peptide-loading complex. Second, we discuss mechanisms of cross-presentation, the phenomenon whereby extracellular and luminal protein antigens can be processed by antigen-presenting cells, particularly dendritic cells, and presented by MHC class I molecules to CD8(+) T cells. The focus of the discussion is mainly on the human MHC class I system.

[Indexed for MEDLINE]

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