CIDR-NIA Whole Exome Analysis of Ehlers-Danlos Syndrome
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ABSTRACT:
PROVIDER: PRJNA517978 | ENA |
REPOSITORIES: ENA
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Project description:CIDR-NIA Whole Exome Analysis of Ehlers-Danlos Syndrome
| PRJNA517979 | ENA
Project description:Periodontal Ehlers–Danlos syndrome (pEDS) is a rare, distinct hereditary disorder characterized by early onset periodontal destruction, tissue fragility and joint hypermobility. pEDS is caused by mutant variants of C1R (and C1S) genes, which encode the C1s (and C1s) subunits of the first component of the classical complement pathway. Abberant serine protease activation will result in C4 cleavage and local complement cascade activation, as well as other possible consequences. Although multiple studies have investigated the genetic variant analysis of pEDS, the transcriptome profiles of pEDS remain unknown. To better understand the pathomechanism underlying the clinical manifestation of pEDS and to identify novel molecular targets that may expand treatment strategies, our study performed transcriptome profiling by RNA sequencing of patient-derived monocytes from 2 pEDS patients and 3 normal controls. Genes related to periodontal host defense, inflammatory response, skin disease and vascular development were significantly enriched. Furthermore, we identified genes that may be involved in the pathogenesis of periodontal destruction and pretibial pigmentation of pEDS. Overall, our study presents the first pEDS transcriptomics data, revealing distinct molecular features in monocytes of periodontal Ehlers–Danlos syndrome, and serves as a tool to better understand the disease.
2021-12-16 | GSE190786 | GEO
Project description:Vascular Ehlers-Danlos syndrome is a rare inherited disorder caused by genetic variants in type III collagen. Its prognosis is especially hampered by unpredictable arterial ruptures and there is no therapeutic consensus. We created a knock-in Col3a1+/G182R mouse model and performed a complete genetic, molecular and biochemical characterization. Several therapeutic strategies were also tested. Col3a1+/G182R mice showed a spontaneous mortality caused by thoracic aortic rupture that recapitulates the vascular Ehlers-Danlos syndrome with a lower survival rate in males, thin non-inflammatory arteries and an altered arterial collagen. Transcriptomic analysis of aortas showed upregulation of genes related to inflammation and cell stress response. Compared to water, survival rate of Col3a1+/G182R mice was not affected by beta-blockers (propranolol or celiprolol). Two other vasodilating anti-hypertensive agents (hydralazine, amlodipine) gave opposite results on aortic rupture and mortality rate. There was a spectacular beneficial effect of losartan, reversed by the cessation of its administration, and a marked deleterious effect of exogenous angiotensin II. These results suggest that blockade of the renin angiotensin system should be tested as a first-line medical therapy in patients with vascular Ehlers-Danlos syndrome.
2022-02-16 | GSE196753 | GEO
Project description:Gene expression profiling of cultured skin fibroblasts obtained from patients affected with classical Ehlers Danlos syndrome (cEDS) Transcriptome-wide expression profiling using the Affymetrix Gene 1.0 ST platform comparing the gene expression pattern of cultured skin fibroblasts from 4 cEDS patients with those of 9 healthy individuals
2019-01-21 | GSE117680 | GEO
Project description:Analysis of gene expression profiling of cultured skin fibroblasts obtained from patients affected with vascular Ehlers Danlos syndrome (vEDS) Transcriptome-wide expression profiling using the Affymetrix Gene 1.0 ST platform comparing the gene expression pattern of cultured skin fibroblasts derived from three patients with vEDS with those of nine healthy individuals
2018-01-03 | GSE102042 | GEO
Project description:Transcriptome profiles of monocytes of Periodontal Ehlers–Danlos Syndrome patients
| PRJNA788474 | ENA
Project description:Classical-like Ehlers–Danlos syndrome (clEDS) is an autosomal recessive disorder caused by complete absence of tenascin-X resulting from biallelic variation in TNXB. Accurate detection of TNXB variants is challenging because of the presence of the pseudogene TNXA, which can undergo non-allelic homologous recombination. Therefore, we designed a genetic screening system that is performed using similar operations to other next-generation sequencing (NGS) panel analyses and can be applied to accurately detect TNXB variants and the recombination of TNXA-derived sequences into TNXB. We also analyzed the levels of serum form of TNX (sTNX) by Western bot and LC/MS/MS. Using this system, we identified biallelic TNXB variants in nine unrelated clEDS patients. This report is the first to apply an NGS-based screening for TNXB variants and represents the third largest cohort of clEDS.
2023-08-09 | PXD043691 | Pride
Project description:The spondylodysplastic type of Ehlers-Danlos syndromes (spEDS) is caused by genetic defects in the B4GALT7 or B3GALT6 genes both deranging the biosynthesis of the glycosaminoglycan linkage region of chondroitin/dermatan sulfate and heparan sulfate proteoglycans. In this study we have analyzed the linkage regions of urinary chondroitin sulfate proteoglycans of three siblings, diagnosed with spEDS and carrying biallelic pathogenic variants of the B3GALT6 gene. Proteoglycans were digested with trypsin, glycopeptides enriched on anion-exchange columns, depolymerized with chondroitinase ABC and analyzed by nLC-MS/MS. In urine of the unaffected mother, the dominating glycopeptide of bikunin/protein AMBP appeared as only one dominating (99.9%) peak with the canonical tetrasaccharide linkage region modification. In contrast, the samples of the three affected siblings contained two different glycopeptide peaks, corresponding to the canonical tetrasaccharide and to the non-canonical trisaccharide linkage region modifications in individual ratios of 61/38, 73/27, 59/41.We propose that the relative distribution of glycosaminoglycan linkage regions of urinary bikunin glycopeptides may serve as a phenotypic biomarker in a diagnostic test but also as a biomarker to follow the effect of future therapies in affected individuals.
2022-06-29 | PXD033230 | Pride
Project description:<p>The NHGRI Next Generation Mendelian Genetics project uses exome resequencing to identify variants in unsolved Mendelian diseases.</p> <p>Ehlers-Danlos syndrome Type VIII is a dominantly inherited connective tissue disorder that is distinguished from other forms of EDS by significant early-onset periodontal disease. Although the clinical phenotype is well delineated, the underlying molecular basis remains unknown. By studying a large family of affected and unaffected individuals with the EDS VIII by exome sequencing, we hope to identify unique regions of homology to assist in identifying the causative gene. </p>
| phs000540.v1.p1 | EGA
Project description:<p>The NHGRI Next Generation Mendelian Genetics project uses exome resequencing to identify variants in unsolved Mendelian diseases.</p> <p>Ehlers-Danlos syndrome Type VIII is a dominantly inherited connective tissue disorder that is distinguished from other forms of EDS by significant early-onset periodontal disease. Although the clinical phenotype is well delineated, the underlying molecular basis remains unknown. By studying a large family of affected and unaffected individuals with the EDS VIII by exome sequencing, we hope to identify unique regions of homology to assist in identifying the causative gene. </p>
| phs000540 | dbGaP