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Analysis of Candidate Idarubicin Drug Resistance Genes in MOLT-3 Cells Using Exome Nuclear DNA

Tomoyoshi Komiyama1, Atsushi Ogura2, Takehito Kajiwara3

  • 1Department of Clinical Pharmacology, Tokai University School of Medicine, Kanagawa 259-1193, Japan. komiyama@tokai-u.jp.

Genes
|August 4, 2018
PubMed

Insights

Investigating acute leukemia drug resistance, this study found that amino acid changes in polymerase- and lipid-associated genes contribute to idarubicin resistance in MOLT-3 cells. These genetic alterations impact drug permeability.

Area of Science:

  • Genetics
  • Molecular Biology
  • Pharmacology

Background:

  • Acute leukemia is often associated with drug resistance due to various gene alterations.
  • Understanding the mechanisms of drug resistance is crucial for improving treatment outcomes.

Purpose of the Study:

  • To investigate the genetic basis of idarubicin (IDR) resistance in the human acute leukemia cell line MOLT-3.
  • To identify specific gene mutations and their functional impact on IDR resistance.

Main Methods:

  • Exome nuclear DNA analyses of MOLT-3 and IDR-resistant MOLT-3/IDR cell lines.
  • Mutation detection using Genome Analysis Toolkit (GATK) and SnpEff.
  • Gene identification via Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) enrichment.
  • Assessment of IDR permeability using Fluorescent Activated Cell Sorting (FACS).

Main Results:

  • Identified 8839 genes with mutations and 1162 genes with amino acid mutations in MOLT-3/IDR cells.
  • Detected amino acid changes in polymerase- and lipid-associated genes, including LIG and helicase plurality genes.
  • Observed significantly slower idarubicin permeability in MOLT-3/IDR cells at 0.5 μg/mL.

Conclusions:

  • Amino acid mutations in polymerase- and lipid-associated genes are linked to idarubicin resistance in acute leukemia.
  • Altered gene expression affecting drug permeability is a key mechanism of resistance.
  • Findings provide insights into novel therapeutic targets for overcoming drug resistance in acute leukemia.
Keywords:
MOLT-3drug resistancegene polymorphismgenetic variationsidarubicinleukemia

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