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Expression quantitative trait loci for PI3K/AKT pathway.

Dongchan Ryu1, Chaeyoung Lee

  • 1Department of Bioinformatics and Life Science, Soongsil University, Dongjak-gu, Seoul, Korea.

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|January 11, 2017
PubMed
Summary
This summary is machine-generated.

This study identified 73 expression quantitative trait loci (eQTLs) associated with multiple genes in the phosphatidylinositol-3-kinase/v-akt murine thymoma viral oncogene homolog (PI3K/AKT) pathway. These eQTLs may predict cancer susceptibility and inform targeted cancer therapies.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Systems Biology

Background:

  • The phosphatidylinositol-3-kinase/v-akt murine thymoma viral oncogene homolog (PI3K/AKT) pathway is crucial in cellular processes and implicated in various diseases, including cancer.
  • Understanding the genetic regulation of genes within this pathway is essential for identifying disease mechanisms and therapeutic targets.

Purpose of the Study:

  • To conduct a genome-wide association study (GWAS) to identify expression quantitative trait loci (eQTLs) for genes involved in the PI3K/AKT pathway.
  • To characterize the association between nucleotide variants and gene expression within this critical pathway.

Main Methods:

  • Utilized mRNA expression data from 341 genes in lymphoblastoid cell lines of 373 European individuals from the 1000 Genomes Project.
  • Genotyped 5,941,815 nucleotide variants using Genome Analyzer II and SOLiD platforms.
  • Performed association analysis to identify significant eQTLs for PI3K/AKT pathway genes.

Main Results:

  • Identified 4166 nucleotide variants associated with the expression of 85 genes (P < 5 × 10⁻⁸).
  • Discovered 73 eQTLs acting as association signals for the expression of multiple genes, including those for collagen and cadherin families.
  • Located specific eQTLs in regulatory regions (promoter, enhancer) of genes like PALLD and CDHR3, potentially influencing collagen synthesis and cell adhesion via the PI3K/AKT pathway.

Conclusions:

  • This study provides a comprehensive profile of eQTLs for PI3K/AKT pathway genes in a healthy population.
  • The identified eQTLs may serve as candidates for predicting genetic susceptibility to cancer and for developing targeted cancer therapies.
  • Further research is warranted to elucidate the precise mechanisms by which these eQTLs regulate gene expression.