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

ABSTRACT: 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)

ORGANISM(S): Homo sapiens

SUBMITTER: Viktor Stranecky

PROVIDER: E-GEOD-30369 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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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

Homo sapiens

Project description:Primary human leucocyte RNA expression of unrelated celiac disease cases and unrelated healthy controls.

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A defect in the ionotropic glutamate receptor 6 gene (GRIK2) causes autosomal recessive mental retardation

Project description:Non-syndromic mental retardation is one of the most important unresolved problems in genetic health care. Autosomal forms are far more common than X-linked ones, but in contrast to the latter, they are still largely unexplored. Here we report on a complex mutation in the ionotropic glutamate receptor 6 gene (GRIK2, GLUR6), which co-segregates with moderate to severe non-syndromic autosomal recessive mental retardation in a large consanguineous Iranian family1. The predicted gene product lacks the first ligand-binding domain, the two adjacent transmembrane domains and the putative pore-forming loop of the GLUK6 protein, suggesting a complete loss of function, which is supported by electrophysiological data. This finding provides the first irrefutable proof that GLUK6 is indispensable for higher brain functions in man, and future studies of this and other ionotropic kainate receptors will shed more light on the pathophysiology of mental retardation. Keywords: array CGH

2007-07-04 | GSE7886 | GEO

Genotyping of autosomal recessive type of limb-girdle muscular dystrophies

Project description:26 limb-girdle muscular dystrophy patients from Latvia and 34 patients from Lithuania with clinical symptoms of limb-girdle muscular dystrophies, along with 204 healthy unrelated controls were genotyped for 96 most frequent known limb-girdle muscular dystrophies causing mutations for the region, using VeraCode GoldenGate system. More information can be found in article Robust genotyping tool for autosomal recessive type of limb-girdle muscular dystrophies in BMC Musculoskeletal Disorders by I. Inashkina et al.

2016-04-28 | E-MTAB-4662 | biostudies-arrayexpress

Defective SEC61α1 underlies a novel cause of autosomal dominant severe congenital neutropenia

Project description:The molecular cause of severe congenital neutropenia (SCN) is unknown in 30-50% of patients. SEC61A1 encodes the α subunit of the heterotrimeric SEC61 complex, which governs endoplasmic reticulum (ER) signal peptide-dependent protein transport and passive calcium leakage. Recently, autosomal dominant mutations in SEC61A1 were reported to be pathogenic in common variable immunodeficiency (CVID) and glomerulocystic kidney disease. However the full spectrum of clinical manifestations in SEC61A1 mutations is yet to be explored. We investigated a SCN patient, the only child of healthy non-consanguineous Belgian parents. We identified a de novo private missense mutation in SEC61A1 (c.A275G;p.Q92R; CADD 24.5; msc 6.099) in the patient. The mutation results in diminished expression of the protein in PBMC and fibroblasts, and an increase in calcium leakage from the ER. In vitro differentiation of CD34+ cells recapitulated the patient’s clinical arrest in granulopoiesis. The impact of Q92R-SEC61α1 on neutrophil maturation was validated using HL-60 cells, where transduction reduced differentiation into CD11b+CD16+ cells. A potential mechanism for this defect is the uncontrolled initiation of the unfolded protein stress response (UPR), with single-cell analysis of primary bone-marrow revealing perturbed UPR in myeloid precursors, and in vitro differentiation of primary CD34+ cells into neutrophils revealing upregulation of the pro-apoptotic CHOP and BiP UPR-response genes. Together, these results support specific autosomal dominant mutations in SEC61A1 causing SCN through dysregulation of the UPR.

2020-04-09 | GSE137496 | GEO

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Loss-of-function mutations TDRD7 lead to a rare novel syndrome combining congenital cataract and non-obstructive azoospermia in humans

Project description:Purpose: Comorbid familial non-obstructive azoospermia (NOA) and congenital cataract (CC) has not been reported previously, and no single human gene has been associated with both diseases in humans. Our purpose is to uncover novel human mutations and genes causing familial NOA and CC. Methods: We performed whole-exome sequencing for two brothers with both NOA and CC from a consanguineous family.The proband was also carried out SNP array analysis. Mutation screening of TDRD7 was performed in another similar consanguineous family and 176 patients with azoospermia or CC alone and 520 healthy controls. Histological analysis was performed for the biopsied testicle sample in one patient, and knockout mice were constructed to verify the phenotype of the mutation in TDRD7. Results: Two novel loss-of-function mutations (c.324_325insA (T110Nfs*30) and (c.688-689insA (p.Y230X), respectively) of TDRD7 were found in the affected patients from the two unrelated consanguineous families. Histological analysis demonstrated a lack of mature sperm in the male patient’s seminiferous tubules. The mutations were not detected in patients with CC or NOA alone. Mice with Tdrd7 gene disrupted at a similar position precisely replicated the human syndrome. Conclusions: We identified TDRD7 causing CC as a new pathogenic gene for male azoospermia in human, with an autosomal recessive mode of inheritance.

2017-06-15 | GSE100019 | GEO

Autosomal recessive PIK3CD deficiency

Project description:Autosomal recessive PIK3CD deficiency

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immune thrombocytopenia in sitosterolemia is driven by lipid disorder and not proteomic aberrations

Project description:Sitosterolemia is a rare autosomal-recessive genetic disorder in which patients develop hypercholesterolemia, and abnormal hematologic and/or liver function tests. In this disease, dysfunction of either ABCG5 or ABCG8 results in intestinal hyperabsorption of all sterols, including cholesterol and more specifically plant sterols or xenosterols, as well as in the impaired ability to excrete xenosterols into the bile. It remains unknown how and why some patients develop hematologic abnormalities. Only a few unrelated patients with hematologic abnormalities at the time of diagnosis have been reported. Here, we report on two unrelated pedigrees who were believed to have chronic immune thrombocytopenia as most prominent feature. Both consanguineous families showed recessive gene variants in ABCG5, that were associated with disease by in-silico protein structure analysis as well as clinical segregation. Thrombopoietin levels and megakaryocyte numbers in bone marrow were normal. Metabolic analysis confirmed the presence of strongly elevated plasma levels of xenosterols. Potential platelet proteomic aberrations were longitudinally assessed following dietary restrictions combined with the administration of the sterol absorption inhibitor ezetimibe. No significant effects on platelet protein content before and after onset of treatment were demonstrated. In sum, our data suggest a defect in proplatelet release in our patients with sitosterolemia.

2024-06-16 | PXD041248 | Pride

Expression data from renal cysts of autosomal dominant polycystic kidney disease (ADPKD) patients

Project description:To elucidate the molecular pathways that modulate renal cyst growth in autosomal dominant polycystic kidney disease (ADPKD) Keywords: Disease state analysis

2009-08-14 | GSE7869 | GEO

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