Autophagosomal formation is an initial step for macroautophagy. Similar to the yeast autophagy-related gene 8 (ATG8), mammalian ATG8 is responsible for autophagosomal formation, and categorized into LC3 and GABARAPs/GATE-16. Recent studies have shown that impairment of the autophagy-lysosome system is associated with formation of cytoplasmic inclusions observed in various neurodegenerative disorders including Parkinson's disease (PD) and dementia with Lewy bodies (DLB). Although abnormal α-synuclein accumulation is a cardinal neuropathological feature in PD, DLB and multiple system atrophy (MSA), it is unclear whether autophagy is altered in MSA. We here demonstrated that the level of matured GABARAPs was significantly decreased in the cerebellum of MSA relative to controls, and that the higher levels of matured and lipidated LC3 were detected in detergent-insoluble fraction of MSA. Immunohistochemical analysis showed that the vast majority of glial cytoplasmic inclusions, a hallmark of MSA, were positive for LC3, whereas they were unstained or barely stained with anti-GABARAPs or anti-GATE-16 antibodies. Our data suggest that autophagy maturation is impaired through the repressed levels of autophagosomal proteins in MSA.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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