Abstract:
:Defects in major histocompatibility complex (MHC) class I-restricted antigen presentation are frequently observed in human cancers and result in escape of tumors from cytotoxic T lymphocyte (CTL) immune surveillance in mice. Here, we show the existence of a unique category of CTLs that can prevent this escape. The CTLs target an alternative repertoire of peptide epitopes that emerge in MHC class I at the surface of cells with impaired function of transporter associated with antigen processing (TAP), tapasin or the proteasome. These peptides, although derived from self antigens such as the commonly expressed Lass5 protein (also known as Trh4), are not presented by normal cells. This explains why they act as immunogenic neoantigens. The newly discovered epitopes can be exploited for immune intervention against processing-deficient tumors through adoptive T-cell transfer or peptide vaccination.
journal_name
Nat Medjournal_title
Nature medicineauthors
van Hall T,Wolpert EZ,van Veelen P,Laban S,van der Veer M,Roseboom M,Bres S,Grufman P,de Ru A,Meiring H,de Jong A,Franken K,Teixeira A,Valentijn R,Drijfhout JW,Koning F,Camps M,Ossendorp F,Kärre K,Ljunggren HG,Meldoi
10.1038/nm1381keywords:
subject
Has Abstractpub_date
2006-04-01 00:00:00pages
417-24issue
4eissn
1078-8956issn
1546-170Xpii
nm1381journal_volume
12pub_type
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