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Updated: Jun 17, 2026

Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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Identification and Verification of Key Genes Underlying Methamphetamine Sensitization Using Network-Based Analysis.

Ali Mohammadian1, Afsaneh Mokaram Bakhtajerdi2, Zahra Mortezaei3

  • 1Department of Bioinformatics and Applied Biotechnology, Faculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran.

Cell Journal
|June 16, 2026
PubMed
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This summary is machine-generated.

Methamphetamine (METH) alters gene expression in brain reward circuits. This study identified key genes and potential drugs to reverse these addiction-related changes in the nucleus accumbens.

Area of Science:

  • Neuroscience
  • Genomics
  • Pharmacology

Background:

  • Methamphetamine (METH) is a psychostimulant causing addiction by altering gene expression in brain reward circuits.
  • The nucleus accumbens (NAc) is a critical brain region involved in reward processing and METH addiction.

Purpose of the Study:

  • To identify METH-associated transcriptional changes in the NAc.
  • To explore potential pharmacological interventions for METH addiction.

Main Methods:

  • In silico analysis of microarray data (GSE46717) to identify differentially expressed genes (DEGs).
  • Functional enrichment analysis and protein-protein interaction (PPI) network construction to identify hub genes.
  • Experimental validation using quantitative polymerase chain reaction (qPCR) in rat NAc tissue.
Keywords:
Gene ExpressionMethamphetamineNetwork AnalysisQuantitative Polymerase Chain ReactionSensitization

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  • Connectivity mapping to identify potential therapeutic drugs.

    • Main Results:

    • Identified 280 DEGs, with upregulated pathways including cocaine addiction and downregulated pathways involving synaptic signaling.
    • Highlighted Fos, Crh, Oprl1, and Slc17a6 as key hub genes, validated computationally and experimentally.
    • Connectivity mapping suggested D-64131 and Mebendazole as potential therapeutics.

    Conclusions:

    • METH induces significant transcriptional alterations in the NAc, impacting synaptic function and addiction pathways.
    • Integrated in silico and experimental approaches identified robust hub genes.
    • Identified candidate compounds for future therapeutic development against METH addiction.