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Related Concept Videos

Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...
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Related Experiment Video

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Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies
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CPT1A methylation is associated with plasma adiponectin.

S Aslibekyan1, A N Do1, H Xu2

  • 1Department of Epidemiology, University of Alabama at Birmingham, USA.

Nutrition, Metabolism, and Cardiovascular Diseases : NMCD
|February 1, 2017
PubMed
Summary

Epigenetic changes in CPT1A are linked to adiponectin levels, a key metabolic health biomarker. This study identified and replicated these associations, supporting epigenetics

Keywords:
AdiponectinEpidemiologyEpigeneticsMethylation

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Area of Science:

  • Epigenetics
  • Metabolic Health
  • Molecular Biology

Background:

  • Adiponectin is a crucial biomarker for metabolic health, influencing insulin sensitivity, lipids, and inflammation.
  • Despite its importance and heritability, the factors determining adiponectin levels are not fully understood.
  • Epigenetic mechanisms may play a role in regulating adiponectin, but require further investigation.

Purpose of the Study:

  • To conduct the first epigenome-wide study investigating the relationship between DNA methylation and plasma adiponectin levels.
  • To identify specific epigenetic loci associated with adiponectin and replicate findings in independent cohorts.
  • To explore the role of epigenetic modifications in adiponectin regulation and metabolic health.

Main Methods:

  • Epigenome-wide cross-sectional study utilizing methylation data from 368,051 CpG sites in CD4+ T-cells (GOLDN cohort).
  • Linear mixed models were employed, adjusting for relevant covariates like age, sex, and family structure.
  • Replication analyses were performed in whole blood samples from the HAPI Heart Study and Bogalusa Heart Study (BHS).

Main Results:

  • A significant positive association was found between plasma adiponectin levels and methylation at a CpG site in CPT1A, a gene involved in fatty acid metabolism.
  • This association was successfully replicated in the HAPI Heart Study and in White participants of the BHS.
  • Further associations were observed with methylation loci in RNF145 and UFM1, though less robust to adjustments for BMI and smoking.

Conclusions:

  • The study identified and replicated significant associations between specific epigenetic loci, notably in CPT1A, and plasma adiponectin levels.
  • These findings underscore the role of epigenetic processes in regulating metabolic traits.
  • The results provide a foundation for future research into the translational applications of epigenetics in metabolic health.