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Published in: Cancer Immunology, Immunotherapy 2/2012

01-02-2012 | Focussed Research Review

Novel insights into the molecular mechanisms of HLA class I abnormalities

Author: Barbara Seliger

Published in: Cancer Immunology, Immunotherapy | Issue 2/2012

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Abstract

Alterations in the MHC class I surface antigens represent one mechanism of tumor cells to escape from natural or immunotherapy-induced antitumor immune responses. In order to restore MHC class I expression, knowledge about the underlying molecular mechanisms of MHC class I defects in different tumor types is required. In most cases, abnormalities of MHC class I expression are reversible by cytokines suggesting a deregulation rather than structural abnormalities of members of the antigen-processing and presentation machinery (APM). The impaired expression of APM components could be controlled at the epigenetic, transcriptional and/or posttranscriptional level. Furthermore, a direct link between altered transcription factor binding, interferon signal transduction and MHC class I APM component expression has been shown, which might be further associated with cell cycle progression. This information will not only give novel insights into the (patho) physiology of the antigen-processing and presenting pathway, but will help in the future to design effective T cell-based immunotherapies.
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Metadata
Title
Novel insights into the molecular mechanisms of HLA class I abnormalities
Author
Barbara Seliger
Publication date
01-02-2012
Publisher
Springer-Verlag
Published in
Cancer Immunology, Immunotherapy / Issue 2/2012
Print ISSN: 0340-7004
Electronic ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-011-1153-9

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