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Bioinformatics prediction of differential miRNAs in non-small cell lung cancer

Kui Xiao1,2,3, Shenggang Liu4, Yijia Xiao4

  • 1Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.

Plos One
|July 21, 2021
PubMed
Abstract

Insights

This study identified hsa-mir-30a as a key microRNA in non-small cell lung cancer (NSCLC). This microRNA is differentially expressed and impacts NSCLC progression by regulating cell cycle and drug metabolism.

Area of Science:

  • Oncology
  • Genetics
  • Bioinformatics

Background:

  • Non-small cell lung cancer (NSCLC) constitutes 85% of all lung cancer cases.
  • Increasing drug resistance in NSCLC presents a significant clinical challenge.
  • Identifying novel biomarkers is crucial for advancing NSCLC treatment strategies.

Purpose of the Study:

  • To screen for microRNAs (miRNAs) associated with non-small cell lung cancer (NSCLC) using bioinformatics analysis.
  • To identify potential miRNA targets for future NSCLC therapeutic development.
  • To elucidate the role of specific miRNAs in NSCLC pathogenesis.

Main Methods:

  • Comparative analysis of NSCLC-related genes from TCGA and GEO databases to identify common miRNAs.
  • Utilized Receiver Operating Characteristic (ROC) curve analysis and survival analysis for miRNA selection.
  • Performed Gene Ontology (GO) and KEGG pathway enrichment analyses to determine miRNA functions.

Main Results:

  • A total of 21 differentially expressed miRNAs were identified between the two databases.
  • Hsa-mir-30a was selected based on ROC and survival analyses, showing higher expression in normal tissues than cancerous ones.
  • Enrichment analysis indicated hsa-mir-30a's involvement in cell cycle regulation and drug metabolism pathways.

Conclusions:

  • Hsa-mir-30a is significantly dysregulated in non-small cell lung cancer (NSCLC).
  • This miRNA influences NSCLC progression primarily through the regulation of cell cycle and drug metabolism.
  • Hsa-mir-30a represents a potential therapeutic target for overcoming drug resistance in NSCLC.

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