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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2020, Vol. 13 ›› Issue (03): 365-370. doi: 10.3877/cma.j.issn.1674-6902.2020.03.015

• Drugs and Clinical • Previous Articles     Next Articles

Differential expression of mRNA and lncRNA in erlotinib-resistant non-small cell lung cancer cells

Shubin Li1, Hong Yu2,(), Gengyue Zhang2   

  1. 1. Department of Internal Medicine 1, South District, Guang′anmen Hospital, Chinese Academy of Traditional Chinese Medicine, Beijing 102600, China
    2. Department of Cell Biology, Institute of Cancer Prevention and Control, Jilin Provincial Cancer Hospital, Changchun 130012, China
  • Received:2019-12-23 Online:2020-06-25 Published:2021-07-22
  • Contact: Hong Yu

Abstract:

Objective

To identify the differential expression of mRNA and lncRNA in the erlotinib-resistant non-small cell lung cancer cells.

Methods

GSE80344 microarray datasets were selected from the Gene Expression Omnibus (GEO) database including the data from erlotinib-resistant HCC827 cells and sensitive cells. The aberrantly-expressed mRNAs and lncRNAs were analyzed by GEO2R and probe ID matching. The screening criteria were |Fold change|>1.5 and P value<0.01. The possible mechanisms of action of dysregulatory mRNAs and lncRNAs were investigated by Panther (http: //www.pantherdb.org), KEGG (http: //www.kegg.jp/), STRING (http: //string-db.org), and other databases. The candidate key mRNAs and lncRNAs obtained by screening were verified by survival analysis using the data from the TCGA database (https: //cancergenome.nih.gov/).

Results

Compared with the sensitive cells, there were 644 differentially-expressed mRNAs and 367 differentially-expressed lncRNAs in the erlotinib-resistant HCC827 cells, respectively, of which 128 mRNAs were up-regulated and 516 mRNAs were down-regulated. And 137 lncRNAs were up-regulated and 230 lncRNAs were down-regulated. These mRNAs and lncRNAs were mainly involved in the signaling pathways closely related to cancers, such as PI3K-Akt, Ras, MAPK, ECM receptor interactions, and so on. Database-based verification confirmed the screening results.

Conclusion

The screened out mRNAs and lncRNAs can provide theoretical and preliminary experimental bases for the further study on the mechanisms of EGFR-TKIs resistance of non-small cell lung cancer.

Key words: Non-small cell lung cancer, Erlotinib drug resistance, Differential expression, IncRNA analysis

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