Journal
SCIENTIFIC REPORTS
Volume 11, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41598-021-88895-0
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Funding
- Children's Hospital of Philadelphia
- endowed chair in genomic research
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CLEC16A plays a role in autophagy/mitophagy processes and its genetic variants are implicated in multiple autoimmune diseases. Inducible whole-body knockout of Clec16a in mice resulted in an inflammatory neurodegenerative phenotype resembling spinocerebellar ataxia. The study suggests a potential link between CLEC16A, ISG15, and downstream autoimmune and inflammatory processes.
CLEC16A has been shown to play a role in autophagy/mitophagy processes. Additionally, genetic variants in CLEC16A have been implicated in multiple autoimmune diseases. We generated an inducible whole-body knockout, Clec16a(Delta UBC) mice, to investigate the loss of function of CLEC16A. The mice exhibited a neuronal phenotype including tremors and impaired gait that rapidly progressed to dystonic postures. Nerve conduction studies and pathological analysis revealed loss of sensory axons that are associated with this phenotype. Activated microglia and astrocytes were found in regions of the CNS. Several mitochondrial-related proteins were up- or down-regulated. Upregulation of interferon stimulated gene 15 (IGS15) were observed in neuronal tissues. CLEC16A expression inversely related to IGS15 expression. ISG15 may be the link between CLEC16A and downstream autoimmune, inflammatory processes. Our results demonstrate that a whole-body, inducible knockout of Clec16a in mice results in an inflammatory neurodegenerative phenotype resembling spinocerebellar ataxia.
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