The Immunoproteasome in oxidative stress, aging, and disease.
The Immunoproteasome has traditionally been viewed primarily for its role in peptide production for antigen presentation by the major histocompatibility complex, which is critical for immunity. However, recent research has shown that the Immunoproteasome is also very important for the clearance of oxidatively damaged proteins in homeostasis, and especially during stress and disease. The importance of the Immunoproteasome in protein degradation has become more evident as diseases characterized by protein aggregates have also been linked to deficiencies of the Immunoproteasome. Additionally, there are now diseases defined by mutations or polymorphisms within Immunoproteasome-specific subunit genes, further suggesting its crucial role in cytokine signaling and protein homeostasis (or "proteostasis"). The purpose of this review is to highlight our growing understanding of the importance of the Immunoproteasome in the management of protein quality control, and the detrimental impact of its dysregulation during disease and aging.
a Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center , The University of Southern California , Los Angeles , CA , USA ;
Helen K
HK
Johnston-Carey
a Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center , The University of Southern California , Los Angeles , CA , USA ;
Laura C D
LC
Pomatto
a Leonard Davis School of Gerontology of the Ethel Percy Andrus Gerontology Center , The University of Southern California , Los Angeles , CA , USA ;|b Division of Molecular & Computational Biology, Department of Biological Sciences, Dornsife College of Letters, Arts, & Sciences , Los Angeles , CA , USA.
Kelvin J A
KJ
Davies
D000375:Aging; D000818:Animals; D006801:Humans; D007107:Immune System; D007371:Interferon-gamma; D018384:Oxidative Stress; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism / Q000502:physiology*; D066263:Protein Aggregation, Pathological
D007371:Interferon-gamma; D046988:Proteasome Endopeptidase Complex
20S core; Adaptation; IFN-γ; IκBα; Nrf2; proteostasis