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Farhat NY, Alexander D, McKee K, Iben J, Rodriguez-Gil JL, Wassif CA, Cawley NX, Balch WE, Porter FD. Sterol O-Acyltransferase 1 ( SOAT1): A Genetic Modifier of Niemann-Pick Disease, Type C1. Int J Mol Sci 2024; 25:4217. [PMID: 38673803 PMCID: PMC11050712 DOI: 10.3390/ijms25084217] [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: 03/20/2024] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024] Open
Abstract
Niemann-Pick disease type C1 (NPC1) is a lysosomal disorder due to impaired intracellular cholesterol transport out of the endolysosomal compartment.. Marked heterogeneity has been observed in individuals with the same NPC1 genotype, thus suggesting a significant effect of modifier genes. Prior work demonstrated that decreased SOAT1 activity decreased disease severity in an NPC1 mouse model. Thus, we hypothesized that a polymorphism associated with decreased SOAT1 expression might influence the NPC1 phenotype. Phenotyping and genomic sequencing of 117 individuals with NPC1 was performed as part of a Natural History trial. Phenotyping included determination of disease severity and disease burden. Significant clinical heterogeneity is present in individuals homozygous for the NPC1I1061T variant and in siblings. Analysis of the SOAT1 polymorphism, rs1044925 (A>C), showed a significant association of the C-allele with earlier age of neurological onset. The C-allele may be associated with a higher Annualized Severity Index Score as well as increased frequency of liver disease and seizures. A polymorphism associated with decreased expression of SOAT1 appears to be a genetic modifier of the NPC1 phenotype. This finding is consistent with prior data showing decreased phenotypic severity in Npc1-/-:Soat1-/- mice and supports efforts to investigate the potential of SOAT1 inhibitors as a potential therapy for NPC1.
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Affiliation(s)
- Nicole Y. Farhat
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
| | - Derek Alexander
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
| | - Kyli McKee
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
| | - James Iben
- Molecular Genomics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Jorge L. Rodriguez-Gil
- Division of Medical Genetics, Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA;
| | - Christopher A. Wassif
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
| | - Niamh X. Cawley
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
| | - William E. Balch
- Department of Molecular Medicine, Scripps Research, La Jolla, CA 92037, USA;
| | - Forbes D. Porter
- Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA; (N.Y.F.); (D.A.); (K.M.); (C.A.W.); (N.X.C.)
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2
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Su H, Zhu L, Su L, Li M, Wang R, Zhu J, Chen Y, Chen T. Impact of miR-29c-3p in the Nucleus Accumbens on Methamphetamine-Induced Behavioral Sensitization and Neuroplasticity-Related Proteins. Int J Mol Sci 2024; 25:942. [PMID: 38256016 PMCID: PMC10815255 DOI: 10.3390/ijms25020942] [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: 11/17/2023] [Revised: 12/26/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Methamphetamine (METH) abuse inflicts both physical and psychological harm. While our previous research has established the regulatory role of miR-29c-3p in behavior sensitization, the underlying mechanisms and target genes remain incompletely understood. In this study, we employed the isobaric tags for relative and absolute quantitation (iTRAQ) technique in conjunction with Ingenuity pathway analysis (IPA) to probe the putative molecular mechanisms of METH sensitization through miR-29c-3p inhibition. Through a microinjection of AAV-anti-miR-29c-3p into the nucleus accumbens (NAc) of mice, we observed the attenuation of METH-induced locomotor effects. Subsequent iTRAQ analysis identified 70 differentially expressed proteins (DEPs), with 22 up-regulated potential target proteins identified through miR-29c-3p target gene prediction and IPA analysis. Our focus extended to the number of neuronal branches, the excitatory synapse count, and locomotion-related pathways. Notably, GPR37, NPC1, and IREB2 emerged as potential target molecules for miR-29c-3p regulation, suggesting their involvement in the modulation of METH sensitization. Quantitative PCR confirmed the METH-induced aberrant expression of Gpr37, Npc1, and Ireb2 in the NAc of mice. Specifically, the over-expression of miR-29c-3p led to a significant reduction in the mRNA level of Gpr37, while the inhibition of miR-29c-3p resulted in a significant increase in the mRNA level of Gpr37, consistent with the regulatory principle of miRNAs modulating target gene expression. This suggests that miR-29c-3p potentially influences METH sensitization through its regulation of neuroplasticity. Our research indicates that miR-29c-3p plays a crucial role in regulating METH-induced sensitization, and it identified the potential molecular of miR-29c-3p in regulating METH-induced sensitization.
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Affiliation(s)
- Hang Su
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Li Zhu
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Linlan Su
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Min Li
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Rui Wang
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Jie Zhu
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
| | - Yanjiong Chen
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China;
| | - Teng Chen
- College of Forensic Medicine, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China; (H.S.); (L.Z.); (L.S.); (M.L.); (R.W.); (J.Z.)
- The Key Laboratory of Health Ministry for Forensic Science, Xi’an Jiaotong University, Xi’an 710061, China
- National Biosafety Evidence Foundation, Bio-Evidence Sciences Academy, Western China Science and Technology Innovation Harbor, Xi’an Jiaotong University, Xi’an 710115, China
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Taherzadeh M, Zhang E, Londono I, De Leener B, Wang S, Cooper JD, Kennedy TE, Morales CR, Chen Z, Lodygensky GA, Pshezhetsky AV. Severe central nervous system demyelination in Sanfilippo disease. Front Mol Neurosci 2023; 16:1323449. [PMID: 38163061 PMCID: PMC10756675 DOI: 10.3389/fnmol.2023.1323449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction Chronic progressive neuroinflammation is a hallmark of neurological lysosomal storage diseases, including mucopolysaccharidosis III (MPS III or Sanfilippo disease). Since neuroinflammation is linked to white matter tract pathology, we analyzed axonal myelination and white matter density in the mouse model of MPS IIIC HgsnatP304L and post-mortem brain samples of MPS III patients. Methods Brain and spinal cord tissues of human MPS III patients, 6-month-old HgsnatP304L mice and age- and sex-matching wild type mice were analyzed by immunofluorescence to assess levels of myelin-associated proteins, primary and secondary storage materials, and levels of microgliosis. Corpus callosum (CC) region was studied by transmission electron microscopy to analyze axon myelination and morphology of oligodendrocytes and microglia. Mouse brains were analyzed ex vivo by high-filed MRI using Diffusion Basis Spectrum Imaging in Python-Diffusion tensor imaging algorithms. Results Analyses of CC and spinal cord tissues by immunohistochemistry revealed substantially reduced levels of myelin-associated proteins including Myelin Basic Protein, Myelin Associated Glycoprotein, and Myelin Oligodendrocyte Glycoprotein. Furthermore, ultrastructural analyses revealed disruption of myelin sheath organization and reduced myelin thickness in the brains of MPS IIIC mice and human MPS IIIC patients compared to healthy controls. Oligodendrocytes (OLs) in the CC of MPS IIIC mice were scarce, while examination of the remaining cells revealed numerous enlarged lysosomes containing heparan sulfate, GM3 ganglioside or "zebra bodies" consistent with accumulation of lipids and myelin fragments. In addition, OLs contained swollen mitochondria with largely dissolved cristae, resembling those previously identified in the dysfunctional neurons of MPS IIIC mice. Ex vivo Diffusion Basis Spectrum Imaging revealed compelling signs of demyelination (26% increase in radial diffusivity) and tissue loss (76% increase in hindered diffusivity) in CC of MPS IIIC mice. Discussion Our findings demonstrate an important role for white matter injury in the pathophysiology of MPS III. This study also defines specific parameters and brain regions for MRI analysis and suggests that it may become a crucial non-invasive method to evaluate disease progression and therapeutic response.
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Affiliation(s)
- Mahsa Taherzadeh
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
| | - Erjun Zhang
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
| | - Irene Londono
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
| | - Benjamin De Leener
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
- NeuroPoly Lab, Institute of Biomedical Engineering, Department of Computer Engineering and Software Engineering, École Polytechnique de Montréal, Montreal, QC, Canada
| | - Sophie Wang
- Pediatric Storage Disorders Laboratory (PSDL), Departments of Pediatrics, Genetics and Neurology, Washington University School of Medicine, St. Louis, MO, United States
| | - Jonathan D. Cooper
- Pediatric Storage Disorders Laboratory (PSDL), Departments of Pediatrics, Genetics and Neurology, Washington University School of Medicine, St. Louis, MO, United States
| | - Timothy E. Kennedy
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Carlos R. Morales
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
| | - Zesheng Chen
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
| | - Gregory A. Lodygensky
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
| | - Alexey V. Pshezhetsky
- Department of Pediatrics, Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Centre, University of Montreal, Montreal, QC, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC, Canada
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4
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Pfrieger FW. The Niemann-Pick type diseases – A synopsis of inborn errors in sphingolipid and cholesterol metabolism. Prog Lipid Res 2023; 90:101225. [PMID: 37003582 DOI: 10.1016/j.plipres.2023.101225] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/27/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023]
Abstract
Disturbances of lipid homeostasis in cells provoke human diseases. The elucidation of the underlying mechanisms and the development of efficient therapies represent formidable challenges for biomedical research. Exemplary cases are two rare, autosomal recessive, and ultimately fatal lysosomal diseases historically named "Niemann-Pick" honoring the physicians, whose pioneering observations led to their discovery. Acid sphingomyelinase deficiency (ASMD) and Niemann-Pick type C disease (NPCD) are caused by specific variants of the sphingomyelin phosphodiesterase 1 (SMPD1) and NPC intracellular cholesterol transporter 1 (NPC1) or NPC intracellular cholesterol transporter 2 (NPC2) genes that perturb homeostasis of two key membrane components, sphingomyelin and cholesterol, respectively. Patients with severe forms of these diseases present visceral and neurologic symptoms and succumb to premature death. This synopsis traces the tortuous discovery of the Niemann-Pick diseases, highlights important advances with respect to genetic culprits and cellular mechanisms, and exposes efforts to improve diagnosis and to explore new therapeutic approaches.
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5
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Suzuki M, Nagane M, Kato K, Yamauchi A, Shimizu T, Yamashita H, Aihara N, Kamiie J, Kawashima N, Naito S, Yamashita T. Endothelial ganglioside GM3 regulates angiogenesis in solid tumors. Biochem Biophys Res Commun 2021; 569:10-16. [PMID: 34216992 DOI: 10.1016/j.bbrc.2021.06.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Accepted: 06/18/2021] [Indexed: 11/18/2022]
Abstract
Cancer cells require oxygen and nutrients for growth, making angiogenesis one of the essential components of tumor growth. Gangliosides, constituting membrane lipid rafts, regulate intracellular signal transduction and are involved in the malignancy of cancer cells. While endothelial cells, as well as cancer cells, express vast amounts of gangliosides, the precise function of endothelial gangliosides in angiogenesis remains unclear. In this study, we focused on gangliosides of vascular endothelial cells and analyzed their functions on tumor angiogenesis. In human breast cancer, GM3 synthase was highly expressed in vascular endothelial cells as well as immune cells. Angiogenesis increased in GM3S-KO mice. In BAEC, RNA interference of GM3S showed increased cellular invasion and oxidative stress tolerance through activation of ERK. In the breast cancer model, GM3-KO mice showed an increase in tumor growth and angiogenesis. These results suggest that the endothelial ganglioside GM3 regulates tumor angiogenesis by suppressing cellular invasion and oxidative stress tolerance in endothelial cells.
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Affiliation(s)
- Mira Suzuki
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Masaki Nagane
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Kazuhiro Kato
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Akinori Yamauchi
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Takuto Shimizu
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Hiroko Yamashita
- Department of Breast Surgery, Hokkaido University Hospital, Sapporo, Japan
| | - Naoyuki Aihara
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Junichi Kamiie
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan
| | - Nagako Kawashima
- Department of Nephrology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Shokichi Naito
- Department of Nephrology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Tadashi Yamashita
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa, Japan.
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6
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Parenti G, Medina DL, Ballabio A. The rapidly evolving view of lysosomal storage diseases. EMBO Mol Med 2021; 13:e12836. [PMID: 33459519 PMCID: PMC7863408 DOI: 10.15252/emmm.202012836] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/17/2022] Open
Abstract
Lysosomal storage diseases are a group of metabolic disorders caused by deficiencies of several components of lysosomal function. Most commonly affected are lysosomal hydrolases, which are involved in the breakdown and recycling of a variety of complex molecules and cellular structures. The understanding of lysosomal biology has progressively improved over time. Lysosomes are no longer viewed as organelles exclusively involved in catabolic pathways, but rather as highly dynamic elements of the autophagic-lysosomal pathway, involved in multiple cellular functions, including signaling, and able to adapt to environmental stimuli. This refined vision of lysosomes has substantially impacted on our understanding of the pathophysiology of lysosomal disorders. It is now clear that substrate accumulation triggers complex pathogenetic cascades that are responsible for disease pathology, such as aberrant vesicle trafficking, impairment of autophagy, dysregulation of signaling pathways, abnormalities of calcium homeostasis, and mitochondrial dysfunction. Novel technologies, in most cases based on high-throughput approaches, have significantly contributed to the characterization of lysosomal biology or lysosomal dysfunction and have the potential to facilitate diagnostic processes, and to enable the identification of new therapeutic targets.
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Affiliation(s)
- Giancarlo Parenti
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | - Diego L Medina
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | - Andrea Ballabio
- Telethon Institute of Genetics and Medicine, Pozzuoli, Italy.,Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Jan and Dan Duncan Neurological Research Institute, Texas Children Hospital, Houston, TX, USA.,SSM School for Advanced Studies, Federico II University, Naples, Italy
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7
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Shimizu T, Nagane M, Suzuki M, Yamauchi A, Kato K, Kawashima N, Nemoto Y, Maruo T, Kawakami Y, Yamashita T. Tumor hypoxia regulates ganglioside GM3 synthase, which contributes to oxidative stress resistance in malignant melanoma. Biochim Biophys Acta Gen Subj 2020; 1864:129723. [PMID: 32861756 DOI: 10.1016/j.bbagen.2020.129723] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Tumor hypoxia drastically changes cancer phenotypes, including angiogenesis, invasion, and cell death. Gangliosides are sialic acid-containing glycosphingolipids that are ubiquitously distributed on plasma membranes and are involved in many biological processes, such as the endoplasmic reticulum stress response and apoptosis. In this study, we investigated the regulation and function of glycosphingolipids, which associate with lipid raft on mammalian plasma membranes under hypoxic condition. METHODS B16F10 melanoma cells were subjected to chemical hypoxia and low pO2 condition, and the effect of hypoxia on expression of GM3 synthase were analyzed. Cellular resistance to oxidative stress was analyzed in GM3S-KO B16F10 cells. RESULTS Hypoxia treatment decreased the expression of ganglioside GM3 synthase (GM3S; ST3GAL5), which synthesizes the common substrate of ganglioside biosynthesis. RNA interference of hypoxia inducible factor 1 subunit alpha (HIF-1α) inhibited hypoxia-induced GM3S suppression. Additionally, GM3S deficiency increased cellular resistance to oxidative stress and radiation therapy via upregulation of ERK. CONCLUSIONS Altered synthesis of glycosphingolipids downstream of HIF-1α signaling increased the resistance of melanoma cells to oxidative stress. Furthermore, GM3 has important role on cellular adaptive response to hypoxia. GENERAL SIGNIFICANCE This study indicates that tumor hypoxia regulates therapy-resistance via modulation of ganglioside synthesis.
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Affiliation(s)
- Takuto Shimizu
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan
| | - Masaki Nagane
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan
| | - Mira Suzuki
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan
| | - Akinori Yamauchi
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan
| | - Kazuhiro Kato
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan
| | - Nagako Kawashima
- Department of Nephrology, Kitasato University School of Medicine, Japan
| | - Yuki Nemoto
- Teaching Animal Hospital, Azabu University, Japan
| | - Takuya Maruo
- Teaching Animal Hospital, Azabu University, Japan
| | - Yasushi Kawakami
- Department of Life and Environmental Sciences, Azabu University, Japan
| | - Tadashi Yamashita
- Laboratory of Biochemistry, School of Veterinary Medicine, Azabu University, Japan.
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8
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Understanding and Treating Niemann-Pick Type C Disease: Models Matter. Int J Mol Sci 2020; 21:ijms21238979. [PMID: 33256121 PMCID: PMC7730076 DOI: 10.3390/ijms21238979] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023] Open
Abstract
Biomedical research aims to understand the molecular mechanisms causing human diseases and to develop curative therapies. So far, these goals have been achieved for a small fraction of diseases, limiting factors being the availability, validity, and use of experimental models. Niemann–Pick type C (NPC) is a prime example for a disease that lacks a curative therapy despite substantial breakthroughs. This rare, fatal, and autosomal-recessive disorder is caused by defects in NPC1 or NPC2. These ubiquitously expressed proteins help cholesterol exit from the endosomal–lysosomal system. The dysfunction of either causes an aberrant accumulation of lipids with patients presenting a large range of disease onset, neurovisceral symptoms, and life span. Here, we note general aspects of experimental models, we describe the line-up used for NPC-related research and therapy development, and we provide an outlook on future topics.
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9
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Wheeler S, Sillence DJ. Niemann-Pick type C disease: cellular pathology and pharmacotherapy. J Neurochem 2019; 153:674-692. [PMID: 31608980 DOI: 10.1111/jnc.14895] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/10/2019] [Accepted: 09/15/2019] [Indexed: 12/22/2022]
Abstract
Niemann-Pick type C disease (NPCD) was first described in 1914 and affects approximately 1 in 150 000 live births. It is characterized clinically by diverse symptoms affecting liver, spleen, motor control, and brain; premature death invariably results. Its molecular origins were traced, as late as 1997, to a protein of late endosomes and lysosomes which was named NPC1. Mutation or absence of this protein leads to accumulation of cholesterol in these organelles. In this review, we focus on the intracellular events that drive the pathology of this disease. We first introduce endocytosis, a much-studied area of dysfunction in NPCD cells, and survey the various ways in which this process malfunctions. We briefly consider autophagy before attempting to map the more complex pathways by which lysosomal cholesterol storage leads to protein misregulation, mitochondrial dysfunction, and cell death. We then briefly introduce the metabolic pathways of sphingolipids (as these emerge as key species for treatment) and critically examine the various treatment approaches that have been attempted to date.
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Affiliation(s)
- Simon Wheeler
- School of Pharmacy, De Montfort University, The Gateway, Leicester, UK
| | - Dan J Sillence
- School of Pharmacy, De Montfort University, The Gateway, Leicester, UK
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10
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Dimitriou E, Paschali E, Kanariou M, Michelakakis H. Prevalence of antibodies to ganglioside and Hep 2 in Gaucher, Niemann - Pick type C and Sanfilippo diseases. Mol Genet Metab Rep 2019; 20:100477. [PMID: 31194046 PMCID: PMC6554541 DOI: 10.1016/j.ymgmr.2019.100477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 12/02/2022] Open
Abstract
Lysosomal Storage Diseases (LSDs) are rare genetic diseases, the majority of which are caused by specific lysosomal enzyme deficiencies and all are characterized by malfunctioning lysosomes. Lysosomes are key regulators of many different cellular processes and are vital for the function of the immune system. Several studies have shown the coexistence of LSDs and immune abnormalities. In this study, we investigated the presence of autoantibodies in the plasma of patients with Gaucher disease (GD; n = 6), Sanfilippo Syndrome B (SFB; n = 8) and Niemann - Pick type C disease (NPC; n = 5) before and following Miglustat treatment (n = 3). All were examined for antibodies to antigens of Hep-2 cells and antiganglioside antibodies (AGSA). No autoantibodies were detected in GD patients. 3/8 SFB patients showed only AGSA (2/3 IgM / IgG; 1/3 IgG), 3/8 only anti-Sm E/F and 2/8 showed both IgM / IgG or IgG AGSA and anti-Sm E/F. 3/5 NPC patients showed AGSA (2/3 IgM and IgG, 1/3 IgM) and one anti-Sm E/F and IgM AGSA. Following treatment one patient with no AGSA developed IgM AGSA and two with both IgG and IgM showed only IgG AGSA. In our study, investigating similar numbers of patients, autoantibodies were observed in NPC and SFB patients but not in GD patients. Our findings suggest that, independently of the development of an autoimmune disease in patients with LSDs, there seems to be an autoimmune activation that differs in different disorders. Further studies including more patients, also at different stages of disease and treatment, are needed in order to get further insight into the immune irregularities associated with different LSDs and their significance.
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Key Words
- AGSA, Antiganglioside antibodies
- AMA-M2, antimitochondrial antibodies to M2 antigen
- Autoimmunity
- GD, Gaucher disease
- Gaucher disease
- Immunoglobulins
- Jo-1, Histidyl-tRNA synthetase antigen
- Ku:Ku antigen(p70/p80)CENP A,B,C, Centromere proteins A,B,C
- LSDs, Lysosomal storage diseases
- NPC, Niemann Pick type C disease
- Niemann pick type C disease
- PM-Scl-70, Polymyositis - Scleroderma-70
- RNP, ribonucleoprotein
- SFB, Sanfilippo B syndrome
- SS-A, Sjögren's antigen A
- SS-B, Sjögren's syndrome antigen B
- Sanfilippo B syndrome
- Scl-70, Scleroderma-70
- Sm, Smith antigen (B,B′,D,E,F,G proteins)
- rib-P-Protein, Ribosomal P protein
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Affiliation(s)
- Evangelia Dimitriou
- Department of Enzymology and Cellular Function, Institute of Child Health, Athens, Greece
| | - Evangelia Paschali
- Department of Immunology and Histocompatibility Specialized Center & Referral Center for Primary Immunodeficiencies, Paediatric Immunology, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Maria Kanariou
- Department of Immunology and Histocompatibility Specialized Center & Referral Center for Primary Immunodeficiencies, Paediatric Immunology, 'Aghia Sophia' Children's Hospital, Athens, Greece
| | - Helen Michelakakis
- Department of Enzymology and Cellular Function, Institute of Child Health, Athens, Greece
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11
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Maegawa GH. Lysosomal Leukodystrophies Lysosomal Storage Diseases Associated With White Matter Abnormalities. J Child Neurol 2019; 34:339-358. [PMID: 30757954 PMCID: PMC6459700 DOI: 10.1177/0883073819828587] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The leukodystrophies are a group of genetic metabolic diseases characterized by an abnormal development or progressive degeneration of the myelin sheath. The myelin is a complex sheath composed of several macromolecules covering axons as an insulator. Each of the leukodystrophies is caused by mutations in genes encoding enzymes that are involved in myelin production and maintenance. The lysosomal storage diseases are inborn disorders of compartmentalized cellular organelles with broad clinical manifestations secondary to the progressive accumulation of undegraded macromolecules within lysosomes and related organelles. The more than 60 different lysosomal storage diseases are rare diseases; however, collectively, the incidence of lysosomal storage diseases ranges just over 1 in 2500 live births. The majority of lysosomal storage diseases are associated with neurologic manifestations including developmental delay, seizures, acroparesthesia, motor weakness, and extrapyramidal signs. These inborn organelle disorders show wide clinical variability affecting individuals from all age groups. In addition, several of neurologic, also known as neuronopathic, lysosomal storage diseases are associated with some level of white matter disease, which often triggers the diagnostic investigation. Most lysosomal storage diseases are autosomal recessively inherited and few are X-linked, with females being at risk of presenting with mild, but clinically relevant neurologic manifestations. Biochemical assays are the basis of the diagnosis and are usually confirmed by molecular genetic testing. Novel therapies have emerged. However, most affected patients with lysosomal storage diseases have only supportive management to rely on. A better understanding of the mechanisms resulting in the leukodystrophy will certainly result in innovative and efficacious disease-modifying therapies.
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Affiliation(s)
- Gustavo H.B. Maegawa
- University of Florida, Department of Pediatrics/Genetics
& Metabolism, Gainesville, FL 32608, USA
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12
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Kodachi T, Matsumoto S, Mizuguchi M, Osaka H, Kanai N, Nanba E, Ohno K, Yamagata T. Severe demyelination in a patient with a late infantile form of Niemann-Pick disease type C. Neuropathology 2017; 37:426-430. [PMID: 28387450 DOI: 10.1111/neup.12380] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/02/2017] [Accepted: 03/02/2017] [Indexed: 12/17/2022]
Abstract
Niemann-Pick disease type C (NPC) is a cholesterol storage disease caused by defective cellular cholesterol transportation. The onset and progression of NPC are variable, and autopsy findings have mainly been reported for the adult and juvenile forms of this disease. Here we report the clinical and pathological findings from a 9-year-old female patient with the late infantile form of NPC due to NPC1 gene mutation. She had notable splenomegaly at 4 months of age. She lost the ability to speak at 18 months of age. She learned to walk, but often fell and could no longer walk after 30 months. At 3 years of age, she was diagnosed with NPC. Sequence analysis of the NPC1 gene revealed compound heterozygous mutation of T2108C (F703S) and C2348G (S813X) (both novel). Thereafter, the patient suffered repeated respiratory infections and died of respiratory failure at 9 years of age. Pathological findings included cerebral atrophy (particularly of white matter), severe demyelination, and the loss of neurons from the cerebrum and from the nuclei of the brain stem. Remnant neuronal cells and microglia in the cerebrum, cerebellum, and brain stem had become swollen and foamy. Neurons of the hippocampal CA1 and Purkinje cells were relatively spared, and senile plaques and axonal spheroids were not present. Foamy cells were also observed in other organs, especially the spleen and bone marrow. The F703S mutation in this patient was localized in a sterol-sensing domain (SSD). Severe neurological phenotypes have been previously reported in patients with missense mutations in an SSD. It is considered that the combination of a nonsense mutation and missense mutation in an SSD was responsible for the severe neurological phenotype of our present patient. While pathological findings of adult/juvenile forms of NPC have included swollen neurons and glia, neuronal cell loss, and NFTs, demyelination may be a predominant finding in the infantile form of NPC.
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Affiliation(s)
- Tsuyoshi Kodachi
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Shizuko Matsumoto
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Masashi Mizuguchi
- Department of Developmental Medical Sciences, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Japan
| | - Nobuyuki Kanai
- Department of Pathology, Jichi Medical University, Shimotsuke, Japan
| | - Eiji Nanba
- Research Center for Bioscience and Technology, Tottori University, Yonago, Japan
| | - Kousaku Ohno
- Department of Child Neurology, Tottori University, Yonago, Japan
| | - Takanori Yamagata
- Department of Developmental Medical Sciences, Graduate School of Medicine, the University of Tokyo, Tokyo, Japan
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13
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Hashimoto N, Matsumoto I, Takahashi H, Ashikawa H, Nakamura H, Murayama T. Cholesterol-dependent increases in glucosylceramide synthase activity in Niemann-Pick disease type C model cells: Abnormal trafficking of endogenously formed ceramide metabolites by inhibition of the enzyme. Neuropharmacology 2016; 110:458-469. [DOI: 10.1016/j.neuropharm.2016.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 08/10/2016] [Accepted: 08/12/2016] [Indexed: 11/29/2022]
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14
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Park DH, Wang L, Pittock P, Lajoie G, Whitehead SN. Increased Expression of GM1 Detected by Electrospray Mass Spectrometry in Rat Primary Embryonic Cortical Neurons Exposed to Glutamate Toxicity. Anal Chem 2016; 88:7844-52. [PMID: 27376483 DOI: 10.1021/acs.analchem.6b01940] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Neurons within different brain regions have varying levels of vulnerability to external stress and respond differently to injury. A potential reason to explain this may lie within a key lipid class of the cell's plasma membrane called gangliosides. These glycosphingolipid species have been shown to play various roles in the maintenance of neuronal viability. The purpose of this study is to use electrospray ionization mass spectrometry (ESI-MS) and immunohistochemistry to evaluate the temporal expression profiles of gangliosides during the course of neurodegeneration in rat primary cortical neurons exposed to glutamate toxicity. Primary embryonic (E18) rat cortical neurons were cultured to DIV (days in vitro) 14. Glutamate toxicity was induced for 1, 3, 6, and 24 h to injure and kill neurons. Immunofluorescence was used to stain for GM1 and GM3 species, and ESI-MS was used to quantify the ganglioside species expressed within these injured neurons. ESI-MS data revealed that GM1, GM2, and GM3 were up-regulated in neurons exposed to glutamate. Interestingly, using immunofluorescence, we demonstrated that the GM1 increase following glutamate exposure occurred in viable neurons, possibly indicating a potential intrinsic neuroprotective response. To test this potential neuroprotective property, neurons were pretreated with GM1 for 24 h prior to glutamate exposure. Pretreatment with GM1 conferred significant neuroprotection against glutamate-induced cell death. Overall, work from this study validates the use of ESI-MS for cell-derived gangliosides and supports the further development of lipid based strategies to protect against neuron cell death.
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Affiliation(s)
| | | | | | | | - Shawn Narain Whitehead
- Department of Clinical Neurological Sciences, London Health Sciences Centre, University of Western Ontario , London, Ontario N6A 5A5, Canada
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15
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A murine Niemann-Pick C1 I1061T knock-in model recapitulates the pathological features of the most prevalent human disease allele. J Neurosci 2015; 35:8091-106. [PMID: 26019327 DOI: 10.1523/jneurosci.4173-14.2015] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Niemann-Pick Type C1 (NPC1) disease is a rare neurovisceral, cholesterol-sphingolipid lysosomal storage disorder characterized by ataxia, motor impairment, progressive intellectual decline, and dementia. The most prevalent mutation, NPC1(I1061T), encodes a misfolded protein with a reduced half-life caused by ER-associated degradation. Therapies directed at stabilization of the mutant NPC1 protein reduce cholesterol storage in fibroblasts but have not been tested in vivo because of lack of a suitable animal model. Whereas the prominent features of human NPC1 disease are replicated in the null Npc1(-/-) mouse, this model is not amenable to examining proteostatic therapies. The objective of the present study was to develop an NPC1 I1061T knock-in mouse in which to test proteostatic therapies. Compared with the Npc1(-/-) mouse, this Npc1(tm(I1061T)Dso) model displays a less severe, delayed form of NPC1 disease with respect to weight loss, decreased motor coordination, Purkinje cell death, lipid storage, and premature death. The murine NPC1(I1061T) protein has a reduced half-life in vivo, consistent with protein misfolding and rapid ER-associated degradation, and can be stabilized by histone deacetylase inhibition. This novel mouse model faithfully recapitulates human NPC1 disease and provides a powerful tool for preclinical evaluation of therapies targeting NPC1 protein variants with compromised stability.
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16
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Knight EM, Williams HN, Stevens AC, Kim SH, Kottwitz JC, Morant AD, Steele JW, Klein WL, Yanagisawa K, Boyd RE, Lockhart DJ, Sjoberg ER, Ehrlich ME, Wustman BA, Gandy S. Evidence that small molecule enhancement of β-hexosaminidase activity corrects the behavioral phenotype in Dutch APP(E693Q) mice through reduction of ganglioside-bound Aβ. Mol Psychiatry 2015; 20:109-17. [PMID: 25349165 PMCID: PMC5189927 DOI: 10.1038/mp.2014.135] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 08/07/2014] [Accepted: 08/28/2014] [Indexed: 01/08/2023]
Abstract
Certain mutant Alzheimer's amyloid-β (Aβ) peptides (that is, Dutch mutant APP(E693Q)) form complexes with gangliosides (GAβ). These mutant Aβ peptides may also undergo accelerated aggregation and accumulation upon exposure to GM2 and GM3. We hypothesized that increasing β-hexosaminidase (β-hex) activity would lead to a reduction in GM2 levels, which in turn, would cause a reduction in Aβ aggregation and accumulation. The small molecule OT1001 is a β-hex-targeted pharmacological chaperone with good bioavailability, blood-brain barrier penetration, high selectivity for β-hex and low cytotoxicity. Dutch APP(E693Q) transgenic mice accumulate oligomeric Aβ as they age, as well as Aβ oligomer-dose-dependent anxiety and impaired novel object recognition (NOR). Treatment of Dutch APP(E693Q) mice with OT1001 caused a dose-dependent increase in brain β-hex levels up to threefold over those observed at baseline. OT1001 treatment was associated with reduced anxiety, improved learning behavior in the NOR task and dramatically reduced GAβ accumulation in the subiculum and perirhinal cortex, both of which are brain regions required for normal NOR. Pharmacological chaperones that increase β-hex activity may be useful in reducing accumulation of certain mutant species of Aβ and in preventing the associated behavioral pathology.
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Affiliation(s)
- E M Knight
- Departments of Neurology and Psychiatry, and Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | | | - S H Kim
- Departments of Neurology and Psychiatry, and Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - J C Kottwitz
- Departments of Neurology and Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A D Morant
- Departments of Neurology and Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - W L Klein
- Department of Neurobiology and Cognitive Neurology, and Alzheimer's Disease Center, Northwestern University, Evanston, IL, USA
| | - K Yanagisawa
- Research Institute, National Center for Geriatrics and Gerontology, Obu City, Aichi, Japan
| | - R E Boyd
- Amicus Therapeutics, Cranbury, NJ, USA
| | | | | | - M E Ehrlich
- Departments of Neurology and Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - S Gandy
- Departments of Neurology and Psychiatry, and Alzheimer's Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- James J. Peters Veterans Affairs Medical Center, Bronx, New York, NY, USA
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