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<p>NGS (next-generation sequencing) has become a rapid advance in discovering the variants in the genomic data for disease diagnosis, prognosis, and therapeutic decision. However, the scope of detecting single nucleotide polymorphisms (SNPs) becomes limited by the availability of reliable high-throughput data. OUD (opioid use disorder) is a chronic condition marked by prolonged opioid misuse, leading to cycles of relapse and remission. The discovery of genetic variants associated with OUD is constrained by limited genomic data, making it crucial to identify these variants and their genetic factors. The identification of variants from RNA-seq (RNA-sequencing) data can become the representative of the SNP analysis that is generally preferred from the whole genome or exome sequencing data. This study aimed to identify variants from gene expression data downloaded from NCBI GEO with accession PRJNA492904 in postmortem ventral midbrain specimens of chronic opioid users. We hypothesized that the NRXN3 gene would exhibit the highest number of variants due to its significant role in neuronal synapse function and its association with opioid addiction and impulsivity. We utilized RNA-Seq data from OUD patients (PRJNA492904, NCBI SRA) to detect variants in expressed RNA, which can indicate functional protein changes. Eight genes were analyzed: BDNF, DRD2, DRD3, NRXN3, OPRD1, OPRM1, and NGFB, with a primary focus on NRXN3. Our findings revealed the highest number of variants in NRXN3 compared to the other genes, highlighting its potential importance in OUD and the robustness of RNA-Seq in variant detection.</p>

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Identification of variants from gene expression data of opioid-addicted patients

  • 期刊论文

  • 发表日期：

    2025年7月8日

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  • Swati Ajmeriya,
  • Biswadip Chatterjee,
  • Subhradip Karmakar

摘要

NGS (next-generation sequencing) has become a rapid advance in discovering the variants in the genomic data for disease diagnosis, prognosis, and therapeutic decision. However, the scope of detecting single nucleotide polymorphisms (SNPs) becomes limited by the availability of reliable high-throughput data. OUD (opioid use disorder) is a chronic condition marked by prolonged opioid misuse, leading to cycles of relapse and remission. The discovery of genetic variants associated with OUD is constrained by limited genomic data, making it crucial to identify these variants and their genetic factors. The identification of variants from RNA-seq (RNA-sequencing) data can become the representative of the SNP analysis that is generally preferred from the whole genome or exome sequencing data. This study aimed to identify variants from gene expression data downloaded from NCBI GEO with accession PRJNA492904 in postmortem ventral midbrain specimens of chronic opioid users. We hypothesized that the NRXN3 gene would exhibit the highest number of variants due to its significant role in neuronal synapse function and its association with opioid addiction and impulsivity. We utilized RNA-Seq data from OUD patients (PRJNA492904, NCBI SRA) to detect variants in expressed RNA, which can indicate functional protein changes. Eight genes were analyzed: BDNF, DRD2, DRD3, NRXN3, OPRD1, OPRM1, and NGFB, with a primary focus on NRXN3. Our findings revealed the highest number of variants in NRXN3 compared to the other genes, highlighting its potential importance in OUD and the robustness of RNA-Seq in variant detection.