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Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib

  • Authors:
    • Yuta Nakano
    • Kazutoshi Isobe
    • Takahiro Yoshizawa
    • Naohisa Urabe
    • Sakae Homma
    • Kazuma Kishi
  • View Affiliations / Copyright

    Affiliations: Department of Respiratory Medicine, Toho University School of Medicine, Tokyo 143‑8541, Japan
    Copyright: © Nakano et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 380
    |
    Published online on: July 20, 2023
       https://doi.org/10.3892/ol.2023.13966
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Abstract

The long non‑coding RNA (lncRNA) LINC00460 is involved in tumor growth, metastasis and drug resistance. The present study investigated the clinical significance of LINC00460 expression in patients with epidermal growth factor receptor (EGFR) mutation‑positive lung cancer treated with osimertinib. Osimertinib‑resistant cells we derived from EGFR‑mutant non‑small‑cell lung cancer (NSCLC) cell lines, after which, small interfering RNA (siRNA)‑mediated silencing and in vitro‑transcribed (IVT), synthetic LINC00460 RNA transfection were used to investigate the effects of LINC00460 expression on acquired resistance to osimertinib. Reverse transcription‑quantitative polymerase chain reaction was performed to evaluate LINC00460 expression in 54 samples (RNA extracted from the tumor tissues of 30 cases and cell‑free RNA from 24 cases) obtained from patients with EGFR mutation‑positive lung cancer who had received osimertinib as the initial treatment. The acquisition of osimertinib resistance increased the expression of LINC00460 in the EGFR‑mutant NSCLC cell lines. By contrast, knockdown of LINC00460 in osimertinib‑resistant cell lines increased their sensitivity to osimertinib, whereas treatment of NSCLC cells with IVT LINC00460 RNA decreased their sensitivity to osimertinib. The present study examined LINC00460 expression at the primary tumor site and demonstrated that compared with in the low‑expression group (n=24), the high‑expression group (n=6) had a significantly lower best overall response rate to osimertinib (16.6% vs. 60.0%; P=0.044), significantly shorter median progression‑free survival (PFS; 224 days vs. 669 days; P=0.001) and significantly shorter median overall survival (724 days vs. not reached; P=0.011). Moreover, following osimertinib therapy, PFS was significantly shorter for patients with high LINC00460 expression in plasma cell‑free RNA (n=12) than for those with low LINC00460 expression (n=12) (median PFS: 655 days vs. 210 days; P=0.020). In conclusion, the upregulation of LINC00460, the expression of which is implicated in osimertinib resistance, in the primary site and plasma of patients with EGFR mutation‑positive lung cancer may be associated with a poor prognosis in those treated with osimertinib.
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Copy and paste a formatted citation
Spandidos Publications style
Nakano Y, Isobe K, Yoshizawa T, Urabe N, Homma S and Kishi K: Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib. Oncol Lett 26: 380, 2023.
APA
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., & Kishi, K. (2023). Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib. Oncology Letters, 26, 380. https://doi.org/10.3892/ol.2023.13966
MLA
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., Kishi, K."Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib". Oncology Letters 26.3 (2023): 380.
Chicago
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., Kishi, K."Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib". Oncology Letters 26, no. 3 (2023): 380. https://doi.org/10.3892/ol.2023.13966
Copy and paste a formatted citation
x
Spandidos Publications style
Nakano Y, Isobe K, Yoshizawa T, Urabe N, Homma S and Kishi K: Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib. Oncol Lett 26: 380, 2023.
APA
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., & Kishi, K. (2023). Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib. Oncology Letters, 26, 380. https://doi.org/10.3892/ol.2023.13966
MLA
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., Kishi, K."Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib". Oncology Letters 26.3 (2023): 380.
Chicago
Nakano, Y., Isobe, K., Yoshizawa, T., Urabe, N., Homma, S., Kishi, K."Upregulation of long non‑coding RNA LINC00460 in EGFR‑mutant lung cancer indicates a poor prognosis in patients treated with osimertinib". Oncology Letters 26, no. 3 (2023): 380. https://doi.org/10.3892/ol.2023.13966
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