Cited by 9Genomics and Chromatin DynamicsUbiquitin and proteasome pathwaysT-cell and B-cell Immunology

Role of Sug1, a 19S proteasome ATPase, in the transcription of MHC I and the atypical MHC II molecules, HLA-DM and HLA-DO

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Inostroza-Nieves, Yaritza, Venkatraman, Prasanna, Zavala-Ruiz, Zarixia·2012·Immunology Letters

Abstract

The 19S proteasome regulatory particle plays a critical role in cellular proteolysis. However, emerging evidence suggests roles for 19S proteasome subunits in regulating yeast and mammalian transcription. It has been previously shown that Sug1 is important for the transcription of MHC II molecules. We report here that Sug1 also has a role in regulating transcription of class I MHC and the MHC II-like molecules, HLA-DM and HLA-DO. Reduction of Sug1 expression causes a decrease in the transcription of MHC I and MHC II-like molecules. In addition, we show that association of Sug1 with MHC promoters is followed by the recruitment of the CREB-binding protein (CBP) and the class II transactivator (CIITA). Reduction of Sug1 expression is accompanied by decreased recruitment of CBP and CIITA to the MHC promoters and decreased histone H3 acetylation in these promoters. These studies suggest that Sug1 plays a critical role in transcription of MHC class I, and the MHC class II-like molecules, HLA-DM and HLA-DO.

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Crossref · 10.1016/j.imlet.2012.06.005

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Authors
Inostroza-Nieves, Y., Venkatraman, P., & Zavala-Ruiz, Z.
Affiliations
Advanced Centre for Treatment, Research and Education in Cancer (IN)
Venue
Immunology Letters
Publisher
Elsevier BV
Published
2012-09
Volume
147
Issue
1-2
Pages
67-74
ISSN
0165-2478 (ISSN-L)
OpenAlex
W1997183350
Cited by
9
References
32
Citations by year
2023: 2 · 2020: 1 · 2019: 2 · 2018: 2 · 2014: 2
FWCI
0.26
Type
journal article
Language
en
Open access
Locations
  • Immunology Letters (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (R25GM061838)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
SUG1, HLA-DM, HLA-DO, CREB-binding protein, CIITA, histone H3 acetylation, transcriptional regulation
MeSH terms
ATPases Associated with Diverse Cellular Activities, Acetylation, Cell Line, Gene Expression Regulation, Histones, HLA-D Antigens, Humans, Interferon-gamma, Nuclear Proteins, Promoter Regions, Genetic, Transcription Factors, Transcription, Genetic, Histocompatibility Antigens Class I, Trans-Activators, RNA Interference, Proteasome Endopeptidase Complex, Adaptor Proteins, Signal Transducing, CREB-Binding Protein, LIM Domain Proteins

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