DNA methylome modifications in ME/CFS
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE93266 | GEO | 2017/03/15
SECONDARY ACCESSION(S): PRJNA360457
REPOSITORIES: GEO
Similar Datasets
Project description:Examination of DNA methylome patterns for potential subtypes in a larger cohort of ME/CFS samples using the Illumina Infinium HumanMethylation450 Beadchip Array Bisulfite-converted DNA from 25 samples were hybridised onto the Illumina Infinium HumanMethylation450 Beadchip Array
2017-12-31 | GSE102504 | GEO
Project description:Chronic Fatigue Syndrome (CFS), also known as myalgic encephalomyelitis, is a complex multifactorial disease that is characterized by the persistent presence of fatigue and other particular symptoms for a minimum of 6 months. Symptoms fail to dissipate after sufficient rest and have major effects on the daily functioning of CFS sufferers. CFS is a multi-system disease with a heterogeneous patient population showing a wide variety of functional disabilities and its biological basis remains poorly understood. Stable alterations in gene function in the immune system have been reported in several studies of CFS. Epigenetic modifications have been implicated in long-term effects on gene function, however, to our knowledge, genome-wide epigenetic modifications associated with CFS have not been explored. We examined the DNA methylome in peripheral blood mononuclear cells isolated from CFS patients and healthy controls using the Illumina HumanMethylation450 BeadChip array, controlling for invariant probes and probes overlapping polymorphic sequences. Genomic DNA from 24 peripheral blood mononuclear cells (PBMC) samples (12 CFS, 12 controls) were bisulfite-converted and hybridised to the Illumina Infinium HumanMethylation450 BeadChip. GenomeStudio files were generated and the data was analyzed using the Illumina Methylation Analyzer R package.
2014-08-12 | E-GEOD-59489 | biostudies-arrayexpress
Project description:Chronic Fatigue Syndrome (CFS), also known as myalgic encephalomyelitis, is a complex multifactorial disease that is characterized by the persistent presence of fatigue and other particular symptoms for a minimum of 6 months. Symptoms fail to dissipate after sufficient rest and have major effects on the daily functioning of CFS sufferers. CFS is a multi-system disease with a heterogeneous patient population showing a wide variety of functional disabilities and its biological basis remains poorly understood. Stable alterations in gene function in the immune system have been reported in several studies of CFS. Epigenetic modifications have been implicated in long-term effects on gene function, however, to our knowledge, genome-wide epigenetic modifications associated with CFS have not been explored. We examined the DNA methylome in peripheral blood mononuclear cells isolated from CFS patients and healthy controls using the Illumina HumanMethylation450 BeadChip array, controlling for invariant probes and probes overlapping polymorphic sequences.
2014-08-12 | GSE59489 | GEO
Project description:Aberrant methylation at the promoter region of tumor suppressors is frequently reported in NPC; however, genome-wide methylation changes have not been comprehensively investigated. Therefore, we systematically analyzed methylome data in 25 primary NPC tumors and non-tumor counterparts using Illumina HumanMethylation450 BeadChip. Bisulphite converted DNA from 50 samples were hybridized to the Illumina HumanMethylation450 BeadChip. Bisulphite pyrosequencing was used as an independent method to validate the BeadChip results.
2016-07-03 | E-GEOD-62336 | biostudies-arrayexpress
Project description:Aim: To characterize the sperm methylome in semen samples from 19 donors with proven fertility. Material and Methods: Bisulfite-converted sperm DNA was hybridized on the HumanMethylation450 Infinium BeadChip platform. CpG fluorescence-intensities were extracted and converted to β-values. Results: The sperm methylome is highly homogeneous and hypomethylated. Genes with hypomethylated promoters are ontologically associated to biological functions related to spermatogenesis and embryogenesis. Sex-chromosomes are the most hypomethylated chromosomes, supporting data that indicated their essential role in spermatogenesis. Ninety-four genes are resistant to demethylation, being strong candidates for transgenerational inheritance. Conclusion: Spermatozoa carry a homogeneous methylation profile that is a footprint of past events (spermatogenesis), is designed to facilitate future events (embryogenesis), and has a possible influence in the adult life (transgenerational effects).
2018-05-01 | GSE99184 | GEO
Project description:Aberrant methylation at the promoter region of tumor suppressors is frequently reported in NPC; however, genome-wide methylation changes have not been comprehensively investigated. Therefore, we systematically analyzed methylome data in 25 primary NPC tumors and non-tumor counterparts using Illumina HumanMethylation450 BeadChip.
2016-01-01 | GSE62336 | GEO
Project description:Genome wide DNA methylation profiling of Chronic Obstructive Pulmonary Disease (COPD) patients and healthy subjects. The Illumina Infinium HumanMethylation450 BeadChip was used to obtain DNA methylation profiles across in peripheral blood mononuclear cell samples. Samples included 6 normal subjects and 12 COPD patients among which 3 of them have 2nd samples from follow-up examination.
2021-03-08 | GSE118468 | GEO
Project description:Wide methylation analysis in vestibular schwannoma [Infinium HumanMethylation450 BeadChip]
| PRJNA244047 | ENA
Project description:We investigated if the presence of germline CDKN2A mutations or the occurrence of cutaneous melanoma could induce constitutive genome-wide DNA methylation changes. We analyzed the leukocytes’ methylomes of eight patients carrying CDKN2A mutations, eight sporadic melanoma patients and compared them with healthy controls (n=8). The genome-wide DNA methylation profiling was obtained using the Infinium HumanMethylation450 BeadChip platform (Illumina).
2014-09-15 | GSE54939 | GEO
Project description:Alterations in endometrial DNA methylation profile have been proposed as one potential mechanism initiating the development of endometriosis. However, the normal endometrial methylome is influenced by the cyclic hormonal changes and the menstrual cycle phase-dependent epigenetic signature should be considered when studying endometrial disorders. So far, no studies have been performed to evaluate the menstrual cycle influences and endometriosis-specific endometrial methylation pattern at the same time. Therefore, we used Infinium HumanMethylation 450K BeadChip arrays to explore DNA methylation profiles of endometrial tissues from various menstrual cycle phases. Infinium HumanMethylation 450K BeadChip arrays were used to explore DNA methylation profiles of endometrial tissues from mid secretory cycle phase from 17 patients without endometriosis
2016-02-15 | E-GEOD-73949 | biostudies-arrayexpress