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Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation

ABSTRACT: Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation

PROVIDER: PRJNA671280 | ENA |

REPOSITORIES: ENA

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Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [RNA-seq]

Project description:Genome-wide association studies (GWAS) have found that increased risk for atrial fibrillation (AF), the most common type of arrhythmia in humans, is associated with non-coding sequence variants located in proximity to the PITX2 homeobox gene. Using cardiomyocyte-specific epigenomic and comparative genomic analyses, we identified two AF-associated enhancers neighboring PITX2 with varying degrees of conservation in mice. Pitx2c promoter directly contacted the AF-associated enhancer regions. CRISPR/Cas9 mediated deletion of a 20 kb long topologically engaged enhancer lead to reduced Pitx2c transcription and AF predisposition. Allele-specific ChIP-seq and CUT&RUN experiments showed that long-range interaction of this AF-associated region with the Pitx2c promoter was required for maintenance of the Pitx2c promoter chromatin state. Moreover, long-range looping was mediated by CTCF, as the genetic disruption of an intronic CTCF binding site caused decreased Pitx2c cardiac expression, AF predisposition, and reduced active chromatin marks on Pitx2. Our findings reveal that AF risk variants located at 4q25 reside in genomic regions possessing long-range transcriptional regulatory functions directed at PITX2

2019-10-08 | GSE138529 | GEO

Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [ChIP-seq]

2019-10-08 | GSE138528 | GEO

Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation

Project description:Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation

| PRJNA576253 | ENA

Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [RNA-seq]

Project description:Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [RNA-seq]

| PRJNA576255 | ENA

Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [ChIP-seq]

Project description:Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation [ChIP-seq]

| PRJNA576256 | ENA

Atrial Fibrillation After Surgery for Colorectal Cancer

Project description:This study will report the incidence of atrial fibrillation after elective colorectal cancer resection in the over 65 age group. This will be used to validate a risk model for the development of post-operative atrial fibrillation. Eligible patients will undergo electrocardiogram based screening for atrial fibrillation, as well as brain natriuretic peptide tests prior to surgery. They will undergo 24 hour holter monitor prior to surgery, and at 30 and 90 days following surgery. The primary outcome will be occurrence of atrial fibrillation within 90 days of surgery. Secondary outcomes include quality of life change, use of hospital services for atrial fibrillation, and complications of atrial fibrillation. This will be used to validate the pre-existing model for prediction of atrial fibrillation.

| 2312263 | ecrin-mdr-crc

Atrial Fibrillation Patient's Urine miRNA Microarray

Project description:Analysis for early diagnosis of atrial fibrillation by finding changes in miRNA in the urine of patients with atrial fibrillation

2021-12-16 | GSE190898 | GEO

Long-range Pitx2c Enhancer Promoter Interactions Prevent Predisposition to Atrial Fibrillation

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-10-07 | GSE138530 | GEO

Regional transcriptomics of a human left atrium and implications for atrial fibrillation

Project description:Regional differential expression of atrial fibrillation risk genes in the left atrium and pulmonary veins is not well studied, but may yield insights into atrial fibrillation pathogenesis. We tested the hypothesis that there is significant regional differential expression in left atrium structures. RNAseq was performed in 25 regions within the pulmonary veins (n=12), left atrial body (n=10), and left atrial appendage (n=3) from a 75 year old male with hypertension and atrial fibrillation who died of a stroke. These data show that genes involved in atrial fibrillation pathogenesis have substantial regional expression heterogeneity, particularly when comparing the left atrial body, pulmonary veins and left atrial appendage.

2020-11-14 | GSE161450 | GEO

Comparison of atrial appendage tissues of patients with Valvular Heart Disease and patients with Valvular Heart Disease-Atrial Fibrillation

Project description:Atrial fibrillation (AF) is the most common heart arrhythmia disease. The greatest risk of atrial fibrillation is stroke, and stroke caused by valvular heart disease with atrial fibrillation (AF-VHD) is more serious. the development mechanism from VHD to AF-VHD is not yet clear. The research on expression profiles of lncRNA and mRNA is helpful to explore molecular mechanism in patients with valvular heart disease who develop atrial fibrillation.

2018-04-12 | GSE113013 | GEO

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