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Massive accumulation of sphingomyelin affects the lysosomal and mitochondria compartments and promotes apoptosis in type A Niemann- Pick disease

ABSTRACT: Massive accumulation of sphingomyelin affects the lysosomal and mitochondria compartments and promotes apoptosis in type A Niemann- Pick disease

PROVIDER: PRJNA818866 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18441140_1.fastq.gz	Fastqsanger.gz
	SRR18441140_2.fastq.gz	Fastqsanger.gz
	SRR18441141_1.fastq.gz	Fastqsanger.gz
	SRR18441141_2.fastq.gz	Fastqsanger.gz
	SRR18441142_1.fastq.gz	Fastqsanger.gz

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Similar Datasets

Massive accumulation of sphingomyelin affects the lysosomal and mitochondria compartments and promotes apoptosis in type A Niemann- Pick disease

Project description:Niemann-Pick type A disease (NPA) is a rare lysosomal storage disorder caused by mutations in the gene coding for the lysosomal enzyme acid sphingomyelinase (ASM). ASM deficiency leads to the consequent accumulation of its uncatabolized substrate, the sphingolipid sphingomyelin (SM), causing severe progressive brain disease. To study the effect of the aberrant lysosomal accumulation of SM on cell homeostasis we loaded skin fibroblasts derived from a NPA patient with exogenous SM to mimic the levels of accumulation characteristic of the pathological neurons. In SM-loaded NPA fibroblasts we found the blockage of the autophagy flux and the impairment of the mitochondrial compartment paralleled by the altered transcription of several genes, mainly belonging to the electron transport chain machinery and to the cholesterol biosynthesis pathway. In addition, SM loading induces the nuclear translocation of the transcription factor EB that promotes the lysosomal biogenesis and exocytosis. Interestingly, we obtained similar biochemical findings in the brain of the NPA mouse model lacking ASM (ASMKO mouse) at the neurodegenerative stage. Our work provides a new in vitro model to study NPA etiopathology and suggests the existence of a pathogenic lysosome-plasma membrane axis that with an impairment in the mitochondrial activity is responsible for the cell death.

2022-07-27 | GSE199194 | GEO

Global gene expression change in the cerebellum of Niemann-Pick disease type C mice with deletion of Ccl3 or Purkinje neuron-specific NPC1 rescue

2012-04-17 | GSE36119 | GEO

Global gene expression change in the cerebellum of Niemann-Pick disease type C mice with deletion of Ccl3 or Purkinje neuron-specific NPC1 rescue

Project description:Macrophage inflammatory protein 1alpha/CCL3 protein is a known pro-inflammatory cytokine that can mediate chemotaxis of monocytes and promote cell degranulation. Ccl3 gene expression is elevated in the CNS and visceral tissue of many lysosomal storage disorders. The deletion of Ccl3 in a mouse model of Sandhoff disease was reported to result in reduced monocyte-associated pathology in the brain, delayed neurodegeneration, and prolonged health. However, deletion of Ccl3 in a mouse model of Niemann-Pick C disease was dentrimental or neutral instead of beneficial. Prevention of neuronal loss was instead mediated by providing NPC1 to neurons. We used microarrays to detail the global change in gene expression of the cerebellum in Niemann-Pick C disease animals, Niemann-Pick C disease animals with Ccl3 gene deletion, and Niemann-Pick C disease animals with Purkinje neuron-specific NPC1-YFP rescue. To identify the top ~50 genes elevated in NPC disease Npc1-/- (NPC) and Npc1+/- (WT) mice were compared at age P50; To profile changes in gene expression as a result of Ccl3 gene deletion Ccl3-/-;Npc1-/- mice were compared against Npc1-/- mice across various ages; To profile changes in gene expression as a result of Purkinje neuron-sepcific NPC1 rescue P;N;Npc1-/- mice were compared against Npc1-/- mice across various ages.

2012-04-16 | E-GEOD-36119 | biostudies-arrayexpress

Niemann-Pick type C fibroblast analysis

Project description:Primary skin fibroblasts from four Niemann-Pick type C patients homozygous for the I1061T mutation and four control individuals were cultured under identical conditions in DMEM containing 10% fetal bovine serum. Cells were harvested at 50-70% confluency. mRNA was isolated with the FastTrack 2.0 mRNA isolation kit according to the manufacturer's instructions (Invitrogen, Carlsbad, CA). A reference RNA comprised of 10 cell lines was used as the control for each hybridized sample (Stratagene, La Jolla, CA). Both sample and reference RNAs were amplified using the MessageAmp II aRNA amplification kit (Ambion, Austin, TX). Set of arrays that are part of repeated experiments Biological Replicate Complex

2007-08-15 | E-GEOD-8770 | biostudies-arrayexpress

Human iNSC-derived brain organoid model of lysosomal storage disorder in Niemann-Pick disease type C

Project description:Recent studies on developing three-dimensional (3D) brain organoids from stem cells have allowed the generation of in vitro models of neural disease and have enabled the screening of drugs because these organoids mimic the complexity of neural tissue. Niemann-Pick disease, type C (NPC) is a neurodegenerative lysosomal storage disorder caused by mutations in the NPC1 protein. The pathological features underlying NPC are characterized by the abnormal accumulation of cholesterol in acidic compartments, including late endosomes and lysosomes. Due to the inaccessibility of brain tissues from human NPC patients, we developed NPC brain organoids with induced neural stem cells from NPC patient-derived fibroblasts. NPC organoids exhibit significantly reduced size and proliferative ability, which are accompanied by accumulation of cholesterol, impairment in neuronal differentiation and autophagic flux and dysfunction of lysosomes; therefore, NPC organoids can recapitulate the main phenotypes of NPC patients. Furthermore, these pathological phenotypes observed in NPC organoids were reversed by treatment with valproic acid, which is known to be an effective treatment for several neurodegenerative diseases. Our data present patient-specific phenotypes in 3D organoid-based models of NPC and highlight the application of this model to drug screening in vitro.

2020-12-21 | GSE157676 | GEO

Niemann-Pick type C fibroblast analysis

2007-08-15 | GSE8770 | GEO

CHEMICAL PROTEOMIC ANALYSIS OF ENDOCANNABINOID HYDROLASE ACTIVITY IN NIEMANN-PICK TYPE C MOUSE BRAIN

Project description:The endocannabinoid system is considered to be an endogenous protective system in various neurodegenerative diseases. Niemann-Pick Type C is a neurodegenerative disease in which the role of the endocannabinoid system has not been studied yet. Here, we report the endocannabinoid hydrolase activity in brain proteomes of a Niemann-Pick type C mouse model as measured by activity-based protein profiling. Diacylglycerol lipase α, α/β-hydrolase domain-containing protein 4 (ABHD4), ABHD6, ABHD12, fatty acid amide hydrolase and monoacylglycerol lipase activities were quantified. Chemical proteomics showed no difference in endocannabinoid hydrolase activity in the brain of wildtype compared to Niemann-Pick C1 protein (NPC1) knockout mice. Three lysosomal serine hydrolases were identified with increased activity in NPC1 knockout mouse brain: retinoid-inducible serine carboxypeptidase, cathepsin A and palmitoyl-protein thioesterase 1, and we conclude that these might be interesting therapeutic targets for future validation studies.

2018-04-19 | PXD008979 | Pride

Human iNSC-derived brain organoid model of lysosomal storage disorder in Niemann-Pick disease type C

Project description:Human iNSC-derived brain organoid model of lysosomal storage disorder in Niemann-Pick disease type C

| PRJNA662369 | ENA

lysosome proteomics in Niemann-Pick Type C disease model cells (CHOwt and NPC1-null cells)

Project description:Increasing evidence implicates lysosomal dysfunction in the pathogenesis of neurodegenerative diseases, including the rare inherited lysosomal storage disorders (LSDs) and the most common neurodegenerative diseases, such as Alzheimer’s and Parkinson’s disease (AD and PD). The goal of this work was to analyze whether there are changes in the lysosomal glycocalyx in a cellular model of a LSD Niemann-Pick type C disease (NPC). Using the ferrofluid nanoparticles we isolated lysosomal organelles from NPC1-null and CHOwt cells. Mass spectrometry identification of lysosomal proteins was performed in order to determine the enrichment efficiency for N-glycome profiling of the lysosomal glycocalyx in NPC disease cellular model.

2018-03-21 | PXD008438 | Pride

Proteomic analysis of monocyte derived macrophages from Niemann-Pick disease type C patients

Project description:Niemann-Pick type C disease is a rare neurodegenerative disorder mainly caused by mutations in Npc1, resulting in abnormal late endosomal/lysosomal lipid storage. Although microgliosis is a prominent pathological feature, direct consequences of NPC1 loss on microglial function remain uncharacterized. Previously, we have characterized microglial proteome alterations in the NPC1 KO mouse model (PXD019447). In order to investigate similar changes in humans, we have cultured monocyte derived macrophages of NPC1 patients and control donors.

2021-02-09 | PXD020659 | Pride

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