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Lawrence JA, Aguilar-Calvo P, Ojeda-Juárez D, Khuu H, Soldau K, Pizzo DP, Wang J, Malik A, Shay TF, Sullivan EE, Aulston B, Song SM, Callender JA, Sanchez H, Geschwind MD, Roy S, Rissman RA, Trejo J, Tanaka N, Wu C, Chen X, Patrick GN, Sigurdson CJ. Diminished Neuronal ESCRT-0 Function Exacerbates AMPA Receptor Derangement and Accelerates Prion-Induced Neurodegeneration. J Neurosci 2023; 43:3970-3984. [PMID: 37019623 PMCID: PMC10219035 DOI: 10.1523/jneurosci.1878-22.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/07/2023] Open
Abstract
Endolysosomal defects in neurons are central to the pathogenesis of prion and other neurodegenerative disorders. In prion disease, prion oligomers traffic through the multivesicular body (MVB) and are routed for degradation in lysosomes or for release in exosomes, yet how prions impact proteostatic pathways is unclear. We found that prion-affected human and mouse brain showed a marked reduction in Hrs and STAM1 (ESCRT-0), which route ubiquitinated membrane proteins from early endosomes into MVBs. To determine how the reduction in ESCRT-0 impacts prion conversion and cellular toxicity in vivo, we prion-challenged conditional knockout mice (male and female) having Hrs deleted from neurons, astrocytes, or microglia. The neuronal, but not astrocytic or microglial, Hrs-depleted mice showed a shortened survival and an acceleration in synaptic derangements, including an accumulation of ubiquitinated proteins, deregulation of phosphorylated AMPA and metabotropic glutamate receptors, and profoundly altered synaptic structure, all of which occurred later in the prion-infected control mice. Finally, we found that neuronal Hrs (nHrs) depletion increased surface levels of the cellular prion protein, PrPC, which may contribute to the rapidly advancing disease through neurotoxic signaling. Taken together, the reduced Hrs in the prion-affected brain hampers ubiquitinated protein clearance at the synapse, exacerbates postsynaptic glutamate receptor deregulation, and accelerates neurodegeneration.SIGNIFICANCE STATEMENT Prion diseases are rapidly progressive neurodegenerative disorders characterized by prion aggregate spread through the central nervous system. Early disease features include ubiquitinated protein accumulation and synapse loss. Here, we investigate how prion aggregates alter ubiquitinated protein clearance pathways (ESCRT) in mouse and human prion-infected brain, discovering a marked reduction in Hrs. Using a prion-infection mouse model with neuronal Hrs (nHrs) depleted, we show that low neuronal Hrs is detrimental and markedly shortens survival time while accelerating synaptic derangements, including ubiquitinated protein accumulation, indicating that Hrs loss exacerbates prion disease progression. Additionally, Hrs depletion increases the surface distribution of prion protein (PrPC), linked to aggregate-induced neurotoxic signaling, suggesting that Hrs loss in prion disease accelerates disease through enhancing PrPC-mediated neurotoxic signaling.
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Affiliation(s)
- Jessica A Lawrence
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Patricia Aguilar-Calvo
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Daniel Ojeda-Juárez
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Helen Khuu
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Katrin Soldau
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Donald P Pizzo
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Jin Wang
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Adela Malik
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Timothy F Shay
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California 91125
| | - Erin E Sullivan
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California 91125
| | - Brent Aulston
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093
| | - Seung Min Song
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Julia A Callender
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
| | - Henry Sanchez
- Department of Pathology, University of California, San Francisco, San Francisco, California 94143
| | - Michael D Geschwind
- Department of Neurology, Memory and Aging Center, University of California, San Francisco (UCSF), San Francisco, California 94143
| | - Subhojit Roy
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093
| | - Robert A Rissman
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093
| | - JoAnn Trejo
- Department of Pharmacology, University of California, San Diego, La Jolla, California 92093
| | - Nobuyuki Tanaka
- Division of Tumor Immunobiology, Miyagi Cancer Center Research Institute, Natori 981-1293, Japan
- Division of Tumor Immunobiology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Chengbiao Wu
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093
| | - Xu Chen
- Department of Neurosciences, University of California, San Diego, La Jolla, California 92093
| | - Gentry N Patrick
- Department of Biology, University of California, San Diego, La Jolla, California 92093
| | - Christina J Sigurdson
- Department of Pathology, University of California, San Diego, La, Jolla, California, 92093
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, California 95616
- Department of Medicine, University of California, San Diego, La Jolla, California 92093
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Wolf H, Hossinger A, Fehlinger A, Büttner S, Sim V, McKenzie D, Vorberg IM. Deposition pattern and subcellular distribution of disease-associated prion protein in cerebellar organotypic slice cultures infected with scrapie. Front Neurosci 2015; 9:410. [PMID: 26581229 PMCID: PMC4631830 DOI: 10.3389/fnins.2015.00410] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/12/2015] [Indexed: 01/05/2023] Open
Abstract
Organotypic cerebellar slices represent a suitable model for characterizing and manipulating prion replication in complex cell environments. Organotypic slices recapitulate prion pathology and are amenable to drug testing in the absence of a blood-brain-barrier. So far, the cellular and subcellular distribution of disease-specific prion protein in organotypic slices is unclear. Here we report the simultaneous detection of disease-specific prion protein and central nervous system markers in wild-type mouse cerebellar slices infected with mouse-adapted prion strain 22L. The disease-specific prion protein distribution profile in slices closely resembles that in vivo, demonstrating granular spot like deposition predominately in the molecular and Purkinje cell layers. Double immunostaining identified abnormal prion protein in the neuropil and associated with neurons, astrocytes and microglia, but absence in Purkinje cells. The established protocol for the simultaneous immunohistochemical detection of disease-specific prion protein and cellular markers enables detailed analysis of prion replication and drug efficacy in an ex vivo model of the central nervous system.
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Affiliation(s)
- Hanna Wolf
- German Center for Neurodegenerative Diseases Bonn, Germany
| | | | | | - Sven Büttner
- German Center for Neurodegenerative Diseases Bonn, Germany
| | - Valerie Sim
- Centre for Prions and Protein Folding Diseases, University of Alberta Edmonton, AB, Canada
| | - Debbie McKenzie
- Centre for Prions and Protein Folding Diseases, University of Alberta Edmonton, AB, Canada
| | - Ina M Vorberg
- German Center for Neurodegenerative Diseases Bonn, Germany ; Department of Neurology, Rheinische Friedrich-Wilhelms-University of Bonn Bonn, Germany
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