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Inducible knockout of Clec16a in mice results in sensory neurodegeneration

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2021

Sci Rep. 2021 Apr 29;11(1):9319. doi: 10.1038/s41598-021-88895-0.

Inducible knockout of Clec16a in mice results in sensory neurodegeneration

Heather S Hain, Rahul Pandey, Marina Bakay, Bryan P Strenkowski, Danielle Harrington, Micah Romer, William W Motley, Jian Li, Eunjoo Lancaster, Lindsay Roth, Judith B Grinspan, Steven S Scherer, Hakon Hakonarson

The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA. Department of Neurology, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. Department of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA. The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA. Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.

Service type: Knockout mice

Abstract

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, Clec16aΔUBC 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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