Journal ArticleDOI
Identification of HE1 as the Second Gene of Niemann-Pick C Disease
Saule Naureckiene,David E. Sleat,David E. Sleat,Henry Lackland,Anthony H. Fensom,Marie T. Vanier,Robert Wattiaux,Michel Jadot,Peter Lobel,Peter Lobel +9 more
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TLDR
Treatment of NP-C2 fibroblasts with exogenous recombinant HE1 protein ameliorated lysosomal accumulation of low density lipoprotein-derived cholesterol.Abstract:
Niemann-Pick type C2 disease (NP-C2) is a fatal hereditary disorder of unknown etiology characterized by defective egress of cholesterol from lysosomes. Here we show that the disease is caused by a deficiency in HE1, a ubiquitously expressed lysosomal protein identified previously as a cholesterol-binding protein. HE1 was undetectable in fibroblasts from NP-C2 patients but present in fibroblasts from unaffected controls and NP-C1 patients. Mutations in the HE1 gene, which maps to chromosome 14q24.3, were found in NP-C2 patients but not in controls. Treatment of NP-C2 fibroblasts with exogenous recombinant HE1 protein ameliorated lysosomal accumulation of low density lipoprotein-derived cholesterol.read more
Citations
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Characterization of the Niemann-Pick C pathway in alveolar type II
TL;DR: The Niemann-Pick C (NPC) pathway plays an essential role in the intracellular trafficking of cholesterol by facilitating the release of lipoprotein-derived sterol from the lumen of lysosomes as mentioned in this paper.
Journal ArticleDOI
Changes on the Caco-2 secretome through differentiation analyzed by 2-D differential in-gel electrophoresis (DIGE).
Andrés García-Lorenzo,Ana M. Rodríguez-Piñeiro,Francisco Javier Rodríguez-Berrocal,María Páez de la Cadena,Vicenta S. Martínez-Zorzano +4 more
TL;DR: Seven new diagnostic proteins, including the translationally-controlled tumor protein (TCTP), the transforming growth factor-beta-induced protein ig-h3 (TGFβIp), and the Niemann-Pick disease type C2 protein (NPC2) are interesting candidates for future studies focused on their utility as serum biomarkers of colorectal cancer.
Journal ArticleDOI
The cytosolic adaptor AP-1A is essential for the trafficking and function of Niemann-Pick type C proteins.
Steve Poirier,Gaétan Mayer,Stephanie R. Murphy,William S. Garver,Ta-Yuan Chang,Peter Schu,Nabil G. Seidah +6 more
TL;DR: Cumulative data demonstrate that the cytosolic clathrin adaptor AP‐1A is essential for the lysosomal targeting and function of NPC1 and NPC2.
Journal ArticleDOI
Vitamin E Dietary Supplementation Improves Neurological Symptoms and Decreases c-Abl/p73 Activation in Niemann-Pick C Mice
Tamara Marín,Pablo Contreras,Juan Francisco Castro,David Chamorro,Elisa Balboa,Mònica Bosch-Morató,Francisco J. Muñoz,Alejandra R. Alvarez,Silvana Zanlungo +8 more
TL;DR: Results show that vitamin E can delay neurodegeneration in NPC mice and suggest that its supplementation in the diet could be useful for the treatment of NPC patients.
Journal ArticleDOI
Mass spectrometry imaging of lipids: untargeted consensus spectra reveal spatial distributions in Niemann-Pick disease type C1.
TL;DR: This work uses MSI to visualize lipids including cholesterol in cerebellar brain tissue from the NPC1 symptomatic mouse model and unaffected controls and demonstrates a universal approach for addressing reproducibility in imaging experiments applied to NPC1.
References
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Book
The Metabolic and Molecular Bases of Inherited Disease
TL;DR: In this paper, the authors present a list of disorders of MITOCHONDRIAL FUNCTION, including the following: DISORDERS OF MIOCHONDRIC FERTILITY XIX, XVI, XIX.
Journal ArticleDOI
Tissue fractionation studies. 6. Intracellular distribution patterns of enzymes in rat-liver tissue
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Journal ArticleDOI
Association of Mutations in a Lysosomal Protein with Classical Late-Infantile Neuronal Ceroid Lipofuscinosis
David E. Sleat,Robert J. Donnelly,Henry Lackland,Henry Lackland,Chang Gong Liu,Istvan Sohar,Istvan Sohar,Raju K. Pullarkat,Peter Lobel,Peter Lobel +9 more
TL;DR: In this paper, the mannose 6-phosphate modification of newly synthesized lysosomal enzymes was used as an affinity marker, and a single protein was identified that is absent in LINCL.
Journal ArticleDOI
Niemann–Pick C1 Is a Late Endosome-Resident Protein That Transiently Associates with Lysosomes and the Trans-Golgi Network
TL;DR: Characterizing the subcellular location of the NPC1 protein suggests that U18666A may inhibit the retrograde transport of NPC1 from lysosomes to late endosomes for subsequent transfer to the trans-Golgi network.
Journal Article
Genetic heterogeneity in Niemann-Pick C disease: a study using somatic cell hybridization and linkage analysis.
TL;DR: In this article, the authors conducted a study on skin fibroblast cultures from 32 unrelated Niemann-Pick C patients covering the range of known clinical and biochemical phenotypes.
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