Role of NFE2L1 in the Regulation of Proteostasis: Implications for Aging and Neurodegenerative Diseases

被引:6
作者
Chandran, Aswathy [1 ,2 ]
Oliver, Haley Jane [1 ,2 ]
Rochet, Jean-Christophe [1 ,2 ]
机构
[1] Purdue Univ, Dept Med Chem & Mol Pharmacol, W Lafayette, IN 47907 USA
[2] Purdue Univ, Purdue Inst Integrat Neurosci, W Lafayette, IN 47907 USA
来源
BIOLOGY-BASEL | 2023年 / 12卷 / 09期
关键词
NRF2; proteasome; antioxidant response element; neurodegenerative diseases; aging; UBIQUITIN-PROTEASOME SYSTEM; TRANSCRIPTION FACTOR NRF1; FACTOR E2-RELATED FACTOR-1; FACTOR-I NRF1; ALPHA-SYNUCLEIN; MAMMALIAN PROTEASOME; PROTEIN-DEGRADATION; EMBRYONIC LETHALITY; OXIDATIVE STRESS; INTERFERON-GAMMA;
D O I
10.3390/biology12091169
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Simple Summary As we age or develop certain brain diseases, our body's ability to maintain a balanced protein system, termed "proteostasis", is disturbed. Proteostasis is essential for keeping proteins at the correct levels and functioning properly, as well as avoiding a buildup of proteins that form aggregates involved in neurodegenerative diseases, like Alzheimer's disease and Parkinson's disease. One of the major pathways used by our cells to eliminate such proteins is the "ubiquitin proteasome system" (UPS). In this review, we discuss how problems with the UPS are linked to aging and neurodegenerative diseases. We also explore the idea that increasing the activity of NFE2L1, a protein that increases expression of UPS components, could be a strategy to enhance proteasome function and reduce the impact of neurodegenerative diseases.Abstract A hallmark of aging and neurodegenerative diseases is a disruption of proteome homeostasis ("proteostasis") that is caused to a considerable extent by a decrease in the efficiency of protein degradation systems. The ubiquitin proteasome system (UPS) is the major cellular pathway involved in the clearance of small, short-lived proteins, including amyloidogenic proteins that form aggregates in neurodegenerative diseases. Age-dependent decreases in proteasome subunit expression coupled with the inhibition of proteasome function by aggregated UPS substrates result in a feedforward loop that accelerates disease progression. Nuclear factor erythroid 2- like 1 (NFE2L1) is a transcription factor primarily responsible for the proteasome inhibitor-induced "bounce-back effect" regulating the expression of proteasome subunits. NFE2L1 is localized to the endoplasmic reticulum (ER), where it is rapidly degraded under basal conditions by the ER-associated degradation (ERAD) pathway. Under conditions leading to proteasome impairment, NFE2L1 is cleaved and transported to the nucleus, where it binds to antioxidant response elements (AREs) in the promoter region of proteasome subunit genes, thereby stimulating their transcription. In this review, we summarize the role of UPS impairment in aging and neurodegenerative disease etiology and consider the potential benefit of enhancing NFE2L1 function as a strategy to upregulate proteasome function and alleviate pathology in neurodegenerative diseases.
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页数:23
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