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Genetic and Epigenetic Determinants of Pediatric Obesity-Associated Asthma

ABSTRACT: Genetic and Epigenetic Determinants of Pediatric Obesity-Associated Asthma

PROVIDER: PRJNA533157 | ENA |

REPOSITORIES: ENA

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Genetic and Epigenetic Determinants of Pediatric Obesity-Associated Asthma

Project description:Genetic and Epigenetic Determinants of Pediatric Obesity-Associated Asthma

| PRJNA533156 | ENA

Genetic variants regulating ORMDL3 expression are determinants of susceptibility to childhood asthma

Project description:Asthma is caused by a combination of poorly understood genetic and environmental factors. We found multiple markers on chromosome 17q21 to be strongly and reproducibly associated with childhood onset asthma in family and case-referent panels with a combined P < 10-12. In independent replication studies the 17q21 locus showed strong association with diagnosis of childhood asthma in 2,320 subjects from a cohort of German children (P = 0.0003) and in 3,301 subjects from the British 1958 Birth Cohort (P = 0.0005). We systematically evaluated the relationships between markers of the 17q21 locus and transcript levels of genes in EBV-transformed lymphoblastoid cell lines from children in the asthma family panel used in our association study. The SNPs associated with childhood asthma were consistently and strongly associated (P <10-22) in cis with transcript levels of ORMDL3, a member of a gene family that encode transmembrane proteins anchored in the endoplasmic reticulum. The results indicate that genetic variants regulating ORMDL3 expression are determinants of susceptibility to childhood asthma. Experiment Overall Design: Gene expression levels were evaluated in 404 children. We then evaluated the relationship between SNPs in the 17q21 region (which show association to asthma in the same children) with gene expression levels. See http://www.sph.umich.edu/csg/liang/asthma/

2007-11-09 | E-GEOD-8052 | biostudies-arrayexpress

Genetic variants regulating ORMDL3 expression are determinants of susceptibility to childhood asthma

Project description:Asthma is caused by a combination of poorly understood genetic and environmental factors. We found multiple markers on chromosome 17q21 to be strongly and reproducibly associated with childhood onset asthma in family and case-referent panels with a combined P < 10-12. In independent replication studies the 17q21 locus showed strong association with diagnosis of childhood asthma in 2,320 subjects from a cohort of German children (P = 0.0003) and in 3,301 subjects from the British 1958 Birth Cohort (P = 0.0005). We systematically evaluated the relationships between markers of the 17q21 locus and transcript levels of genes in EBV-transformed lymphoblastoid cell lines from children in the asthma family panel used in our association study. The SNPs associated with childhood asthma were consistently and strongly associated (P <10-22) in cis with transcript levels of ORMDL3, a member of a gene family that encode transmembrane proteins anchored in the endoplasmic reticulum. The results indicate that genetic variants regulating ORMDL3 expression are determinants of susceptibility to childhood asthma. Keywords: association study, global gene expression, asthma, ORMDL3

2007-07-01 | GSE8052 | GEO

Expression analysis of inflammatory cytokines in exhaled breath condensates from pediatric patients with sickle cell disease, asthma, sickle cell disease and asthma, and controls

Project description:To analyze expression of inflammatory cytokines in Exhaled Breath Condensates from pediatric patients with sickle cell disease, asthma, sickle cell disease and asthma, and controls

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NHLBI TOPMed: Pediatric Asthma Controller Trial (PACT)

Project description:NHLBI TOPMed: Pediatric Asthma Controller Trial (PACT)

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NHLBI TOPMed: Pediatric Asthma Controller Trial (PACT)

Project description:NHLBI TOPMed: Pediatric Asthma Controller Trial (PACT)

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Genetic and epigenetic determinants of neurogenesis and myogenesis

Project description:This SuperSeries is composed of the following subset Series: GSE34906: Genetic and epigenetic determinants of neurogenesis and myogenesis [ChIP-seq] GSE34907: Genetic and epigenetic determinants of neurogenesis and myogenesis [expression profiling] Refer to individual Series

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microRNA 27b-3p modulates SYK in Pediatric Asthma Induced by Dust Mites

Project description:The PI3K-AKT pathway is known to regulate cytokines in dust mite-induced pediatric asthma. However, the underlying molecular steps involved are not clear. In order to clarify further the molecular steps, this study investigated the expression of certain genes and the involvement of miRNAs in the PI3K-AKT pathway, which might affect the resultant cytokine-secretion. In-vivo and in-vitro ELISA, qRT-PCR, western-blot and microarrays analyses were used in this study. A down-expression of miRNA-27b-3p in dust mite induced asthma group (group D) was found by microarray analysis. This was confirmed by qRT-PCR that found the miRNA-27b-3p transcripts that regulated the expression of SYK and EGFR were also significantly decreased (p < 0.01) in group D. The transcript levels of the SYK and PI3K genes were higher, while those of EGFR were lower in the former group. Meanwhile, we found significant differences in plasma concentrations of some cytokines between the dust mite-induced asthma subjects and the healthy controls. On the other hand, this correlated with the finding that the transcripts of SYK and its downstream PI3K were decreased in HBE transfected with miRNA-27b-3p, but were increased in HBE transfected with the inhibitor in vitro. Our results indicate that the differential expression of the miRNAs in dust mite-induced pediatric asthma may regulate their target gene SYK and may have an impact on the PI3K-AKT pathway associated with the production of cytokines. These findings should add new insight into the pathogenesis of pediatric asthma.

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Project description:NHLBI TOPMed: Genetic Causes of Complex Pediatric Disorders - Asthma (GCPD-A)

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NHLBI TOPMed: Genetic Causes of Complex Pediatric Disorders - Asthma (GCPD-A)

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