• 1. Department of Cardiothoracic Surgery, Hospital Affiliated to Nanjing Medical University and Huai’an First People’s Hospital, Huai’an, 223001, Jiangsu, P.R.China;
  • 2. Department of Cardiothoracic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, P.R.China;
WANG Jun, Email: drwangjun@njmu.eud.cn
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Objective To reveal the potential mechanism of cisplatin resistance in non-small cell lung cancer A549 cells by comparing the expression profiles of wild-type A549 cells and cisplatin-resistant A549 cells (A549/DPP) through whole transcriptome sequencing analysis.Methods The cisplatin resistant A549 (A549/DDP) cell line was first established. Then, the whole-transcriptome analysis was conducted both on A549 and A549/DDP cells. Next, the differentially expressed RNAs of lncRNA-seq, circRNA-seq, and miRNA-seq data were identified, respectively, followed by functional enrichment analysis. Finally, a comprehensive analysis based on the whole transcriptome data was performed and the construction of the ceRNA network was carried out.Results A total of 4 517 lncRNA, 123 circRNA, and 145 miRNA were differentially expressed in A549/DDP cells compared with the A549 cell line. These different RNAs were significantly enriched in cancer-related pathways. The ceRNA network contained 12 miRNAs, 4 circRNAs, 23 lncRNAs, and 9 mRNA nodes, of which hsa-miR-125a-5p and hsa-miR-125b-5p were important miRNAs based on the topological analysis.Conclusion Tumor necrosis factor signaling pathway and p53 signaling pathway are involved in A549/DPP resistance. Hsa-miR-125a-5p and hsa-miR-125b-5p may be potential targets for reversing cisplatin resistance.

Citation: NI Yaojun, XU Zhongneng, CHEN Sheng, WANG Jun. Potential mechanism of cisplatin resistance in non-small cell lung cancer A549 cells analyzed by the whole-transcriptome. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2021, 28(1): 35-42. doi: 10.7507/1007-4848.202003132 Copy

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