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Genotype-Phenotype Correlations of Late Infantile Neuronal Ceroid Lipofuscinosis - LDN 6716

ABSTRACT: Genotype-Phenotype Correlations of Late Infantile Neuronal Ceroid Lipofuscinosis - LDN 6716

PROVIDER: PRJNA449798 | ENA |

REPOSITORIES: ENA

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Genotype-Phenotype Correlations of Late Infantile Neuronal Ceroid Lipofuscinosis - LDN 6716

Project description:Genotype-Phenotype Correlations of Late Infantile Neuronal Ceroid Lipofuscinosis - LDN 6716

| PRJNA449799 | ENA

Proteomics insights into Infantile Neuronal Ceroid Lipofuscinosis (CLN1) point to the involvement of palmitoylation in the disease

Project description:Mutations in the depalmitoylation enzyme, palmitoyl protein thioesterase (PPT1), result in the early onset neurodegenerative disease known as Infantile Neuronal Ceroid Lipofuscinosis. Here, we provide proteomic evidence suggesting that PPT1 deficiency could be considered as a ciliopathy. An unbiased proteomic analysis of membranal brain proteins from neonate Ppt1 knock out and control mice revealed a list of 88 proteins with different expression levels. Among them, we identified Rab3IP, which is known to work in concert with Rab8 and Rab11 to regulated proper ciliogenesis. Surprisingly, PPT1 was observed to localize to cilia. Indeed, an unbiased proteomics analysis on isolated cilia revealed 660 proteins, which differed in their abundance between wild type and Ppt1 knock out. We demonstrate here that Rab3IP, Rab8 and Rab11 are palmitoylated proteins, and palmitoylation of Rab11 is required for proper intracellular localization. Most interestingly, cells and tissues from Ppt1-/- exhibited less ciliated cells and abnormally longer cilia with both acetylated tubulin and Rab3IP mis-distributed along the length of cilia. Overall, our results suggest a novel link between palmitoylated proteins, cilia organization and the pathophysiology of Neuronal Ceroid Lipofuscinosis.

2021-12-14 | PXD001966 | Pride

Gene expression in leucocytes of patients with autosomal dominat neronal ceroid lipofuscinosis (Kufs disease)

Project description:Identification of differentially expressed genes in lecocytes of patients with autosomal dominat neronal ceroid lipofuscinosis (Kufs disease)

2011-10-01 | GSE30369 | GEO

Gene expression in leucocytes of patients with autosomal dominat neronal ceroid lipofuscinosis (Kufs disease)

Project description:Identification of differentially expressed genes in lecocytes of patients with autosomal dominat neronal ceroid lipofuscinosis (Kufs disease) Leucocyte RNA expression of consanguineous Kufs disease cases (n=4) and unrelated healthy controls (n=4)

2011-09-30 | E-GEOD-30369 | biostudies-arrayexpress

Synapse alterations precede neuronal damage and storage pathology in a human cerebral organoid model of CLN3-Juvenile Neuronal Ceroid Lipofuscinosis

Project description:We developed an invitro model for Juvenile Neuronal Ceroid Lipofuscinosis (JNCL) using isogenic CLN3 mutated human iPS cell lines and performed transcriptomic profiling of brain organoids derived from these lines to identify transcriptomic changes in the early developing brain model.

2020-01-03 | GSE137420 | GEO

iTRAQ8 analysis of control and neuronal ceroid lipofuscinosis human brain samples.

Project description:iTRAQ8 analysis of autopsy samples representing brain and cerebrospinal fluid from neuronal ceroid lipofuscinosis patients and controls.

2017-06-06 | MSV000081143 | MassIVE

MRI Brain Volume Measurements in Infantile Neuronal Ceroid Lipofuscinosis.

Project description:Background and purposeInfantile neuronal ceroid lipofuscinosis is a devastating neurodegenerative storage disease caused by palmitoyl-protein thioesterase 1 deficiency, which impairs degradation of palmitoylated proteins (constituents of ceroid) by lysosomal hydrolases. Consequent lysosomal ceroid accumulation leads to neuronal injury, resulting in rapid neurodegeneration and childhood death. As part of a project studying the treatment benefits of a combination of cysteamine bitartrate and N-acetyl cysteine, we made serial measurements of patients' brain volumes with MR imaging.Materials and methodsTen patients with infantile neuronal ceroid lipofuscinosis participating in a treatment/follow-up study underwent brain MR imaging that included high-resolution T1-weighted images. After manual placement of a mask delineating the surface of the brain, a maximum-likelihood classifier was applied to determine total brain volume, further subdivided as cerebrum, cerebellum, brain stem, and thalamus. Patients' brain volumes were compared with those of a healthy population.ResultsMajor subdivisions of the brain followed similar trajectories with different timing. The cerebrum demonstrated early, rapid volume loss and may never have been normal postnatally. The thalamus dropped out of the normal range around 6 months of age; the cerebellum, around 2 years of age; and the brain stem, around 3 years of age.ConclusionsRapid cerebral volume loss was expected on the basis of previous qualitative reports. Because our study did not include a nontreatment arm and because progression of brain volumes in infantile neuronal ceroid lipofuscinosis has not been previously quantified, we could not determine whether our intervention had a beneficial effect on brain volumes. However, the level of quantitative detail in this study allows it to serve as a reference for evaluation of future therapeutic interventions.

| S-EPMC5309144 | biostudies-literature

Brain transcriptome analysis of a TPP-1 neuronal ceroid lipofuscinosis mouse model as disease progresses

Project description:Brain transcriptome analysis of a TPP-1 neuronal ceroid lipofuscinosis mouse model as disease progresses

| PRJNA726561 | ENA

RAGE signaling contributes to neuroinflammation in infantile neuronal ceroid lipofuscinosis.

Project description:Palmitoyl-protein thioesterase-1 (PPT1) deficiency causes infantile neuronal ceroid lipofuscinosis (INCL), a devastating childhood neurodegenerative storage disorder. We previously reported that neuronal apoptosis in INCL is mediated by endoplasmic reticulum-stress. ER-stress disrupts Ca(2+)-homeostasis and stimulates the expression of Ca(2+)-binding proteins. We report here that in the PPT1-deficient human and mouse brain the levels of S100B, a Ca(2+)-binding protein, and its receptor, RAGE (receptor for advanced glycation end-products) are elevated. We further demonstrate that activation of RAGE signaling in astroglial cells mediates pro-inflammatory cytokine production, which is inhibited by SiRNA-mediated suppression of RAGE expression. We propose that RAGE signaling contributes to neuroinflammation in INCL.

| S-EPMC2597448 | biostudies-literature

Two cases of variant late infantile ceroid lipofuscinosis in Jordan.

Project description:BACKGROUND:Late infantile ceroid lipofuscinosis is a rare neurodegenerative disorder that appears between the ages of 2 and 4 years and is difficult to diagnose. In this report we present two sisters with this condition, and the clinical course consisted of delayed developmental skills initially and later regression of previously acquired skills. The cases were initially considered as childhood disintegrative disorder (CDD); however, when whole exome sequencing (WES) genetic testing was done, they proved to be variant late infantile ceroid lipofuscinosis. This is the first report from Jordan. CASE SUMMARY:Clinical presentation included developmental delay and initially speech delay, followed by lose of sphincter control. Motor development was normal until 4 years of age, then they developed ataxia (fear of going downstairs) and weakness while walking. Atonic and myoclonic seizures become intractable, and this was followed by inability to stand or sit and loss of expressive language. In addition to complete blood count test, liver function test, kidney function test, serum electrolyte test, and blood sugar test, serum amino acid profile, B12 level test, thyroid function test, and a brain computed tomography scan were also normal. An electroencephalogram showed a generalized spike and wave pattern, and magnetic resonance imaging showed little to no abnormalities. After dealing with the cases as CDD, WES testing proved a final diagnosis of variant late infantile ceroid lipofuscinosis. Current treatment is anti-epileptic drugs and supportive care at home, and they are now in vegetative state. CONCLUSION:This report highlights the importance of WES for the identification of genetic diseases, especially neurodegenerative disorders.

| S-EPMC6354087 | biostudies-other

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