Cited by 87Advanced Glycation End Products researchUbiquitin and proteasome pathwaysHeat shock proteins research

Advanced-glycation-end-product-induced formation of immunoproteasomes: involvement of RAGE and Jak2/STAT1

Grimm, Stefanie, Ott, Christiane, Hörlacher, Melanie, Weber, Daniela, Höhn, Annika, Grune, Tilman·2012·Biochemical Journal

Abstract

AGEs (advanced glycation-end products) accumulate during aging and several pathologies such as Alzheimer's disease and diabetes. These protein products are known to inhibit proteolytic pathways. Moreover, AGEs are known to be involved in the activation of immune responses. In the present study we demonstrate that AGEs induce the expression of immunoproteasomal subunits. To elucidate a molecular basis underlying the observed effects we were able to demonstrate an activation of the Jak2 (Janus kinase 2)/STAT1 (signal transducer and activator of transcription 1) pathway. Inhibition of Jak2 by AG-490 and STAT1 by specific siRNA (small interfering RNA) abolished AGEinduced expression of immunoproteasomal subunits. Furthermore, silencing of RAGE (receptor for AGEs) revealed that AGE-induced up-regulation of the immunoproteasome is mediated by a RAGE signalling process. Thus we have described for the first time that the signalling pathway of Jak2 and STAT1 activated by AGEs via RAGE is involved in the induction of the immunoproteasome.

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Crossref · 10.1042/bj20120298

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  • Upon binding to their cognate receptor, AGEs trigger activation of downstream effectors including ERK1/2, p38 MAPK, rho-GTPases, JAK, JNK, and NF-kB.

    “Upon binding to their cognate receptor, AGEs trigger the activation of different downstream effectors, including extracellularsignal-regulated kinase 1/2 and p38 mitogen-activated protein kinase, rho-GTPases, Janus kinase, c-Jun N-terminal kinase (JNK), and the transcription factor nuclear-factor-kappa B (NF-𝜅B).[49][50][51][52][53]”

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Authors
Grimm, S., Ott, C., Hörlacher, M., Weber, D., Höhn, A., & Grune, T.
Affiliations
  • University of Hohenheim (DE)
  • Friedrich Schiller University Jena (DE)
Corresponding author
  • Grimm, Stefanie
  • Ott, Christiane
  • Weber, Daniela
  • Grune, Tilman
Venue
Biochemical Journal
Published
2012-10-18
Volume
448
Issue
1
Pages
127-139
ISSN
  • 0264-6021 (ISSN-L)
  • 1470-8728
OpenAlex
W1979388970
Cited by
87
References
48
Citations by year
2026: 1 · 2025: 3 · 2024: 7 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 13 · 2019: 11 · 2018: 6 · 2017: 3 · 2016: 8 · 2015: 6 · 2014: 11 · 2013: 5
FWCI
4.51
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Advanced Glycation End Products research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heat shock proteins research
Keywords
advanced glycation end products, immunoproteasome, RAGE, JAK2/STAT1 signaling, AG490, Alzheimer's disease, diabetes mellitus
MeSH terms
Receptor for Advanced Glycation End Products, Animals, Cysteine Endopeptidases, Gene Expression Regulation, Interferon-gamma, Macrophages, Phosphorylation, Protein Processing, Post-Translational, Receptors, Immunologic, RNA, Messenger, Serum Albumin, Bovine, Transcription, Genetic, Signal Transduction, Glycation End Products, Advanced, Tyrphostins, RNA, Small Interfering, Cell Line, Tumor, Proteasome Endopeptidase Complex, STAT1 Transcription Factor, Mice, Janus Kinase 2

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