Journal
MOLECULAR BRAIN
Volume 12, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s13041-019-0439-2
Keywords
Lysosome; cAMP; Zinc; MT3; EALP
Categories
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT [NRF-2016R1E1A1A01941212, NRF-2017M3C7A1028949, NRF-2017M3C7A1028945, NRF-2017R1D1A1B03031050, NRF-2017R1A2B2005633]
- Korea Health Industry Development Institute (KHIDI) - Ministry of Health & Walfare, Republic of Korea [HI14C1913]
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A number of neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis, share intra- and/or extracellular deposition of protein aggregates as a common core pathology. While the species of accumulating proteins are distinct in each disease, an increasing body of evidence indicates that defects in the protein clearance system play a crucial role in the gradual accumulation of protein aggregates. Among protein degradation systems, the endosome-autophagosome-lysosome pathway (EALP) is the main degradation machinery, especially for large protein aggregates. Lysosomal dysfunction or defects in fusion with vesicles containing cargo are commonly observed abnormalities in proteinopathic neurodegenerative diseases. In this review, we discuss the available evidence for a mechanistic connection between components of the EALP-especially lysosomes-and neurodegenerative diseases. We also focus on lysosomal pH regulation and its significance in maintaining flux through the EALP. Finally, we suggest that raising cAMP and free zinc levels in brain cells may be beneficial in normalizing lysosomal pH and EALP flux.
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