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Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma

  • Authors:
    • Xin Tian
    • Song Gao
    • Yang Liu
    • Ying Xuan
    • Rong Wu
    • Zhenyong Zhang
  • View Affiliations / Copyright

    Affiliations: Department of Medical Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
    Copyright: © Tian et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY 4.0].
  • Pages: 3716-3722
    |
    Published online on: August 2, 2019
       https://doi.org/10.3892/ol.2019.10704
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Abstract

Adenocarcinoma is one of the most common pathological types of human lung cancer and has the highest incidence and mortality rates worldwide. Resistance to paclitaxel (PTX), the standard chemotherapy agent for treatment of lung adenocarcinoma, is a major clinical obstacle. Sensitive markers are urgently required for the diagnosis and characterization of lung cancer, as well as to manage drug resistance. Previous studies have described the activity of long non‑coding RNAs (lncRNAs) in human lung cancer and chemotherapy resistance. In previous studies, lncRNA ENST00000500843 was identified to be downregulated in PTX‑resistant A549 human lung cancer cells. However, the roles of this lncRNA in the development of lung adenocarcinoma and its mechanism in PTX resistance, to the best of our knowledge, have not been described. In the present study, 56 pairs of lung adenocarcinoma and normal adjacent tissue samples were collected. Reverse transcription‑quantitative PCR revealed that the expression levels of lncRNA ENST00000500843 were lower in lung adenocarcinoma tissues and PTX‑resistant A549 cells when compared with normal adjacent tissues and A549 cells. Decreased expression levels of lncRNA ENST00000500843 in lung adenocarcinoma tissues were associated with tumor diameter, the degree of pathological differentiation and metastasis of lymph nodes. Additionally, patients with low expression levels of ENST00000500843 exhibited poorer overall survival and progression‑free survival rates. Furthermore, the present study demonstrated that knockdown of lncRNA ENST00000500843 with small interfering RNA decreased the likelihood of apoptosis in A549 cells and promoted resistance to PTX. This indicated that lncRNA ENST00000500843 may be a useful diagnostic marker of lung cancer and a good prognostic marker for resistance to treatment with PTX.
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Copy and paste a formatted citation
Spandidos Publications style
Tian X, Gao S, Liu Y, Xuan Y, Wu R and Zhang Z: Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma. Oncol Lett 18: 3716-3722, 2019.
APA
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., & Zhang, Z. (2019). Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma. Oncology Letters, 18, 3716-3722. https://doi.org/10.3892/ol.2019.10704
MLA
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., Zhang, Z."Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma". Oncology Letters 18.4 (2019): 3716-3722.
Chicago
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., Zhang, Z."Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma". Oncology Letters 18, no. 4 (2019): 3716-3722. https://doi.org/10.3892/ol.2019.10704
Copy and paste a formatted citation
x
Spandidos Publications style
Tian X, Gao S, Liu Y, Xuan Y, Wu R and Zhang Z: Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma. Oncol Lett 18: 3716-3722, 2019.
APA
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., & Zhang, Z. (2019). Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma. Oncology Letters, 18, 3716-3722. https://doi.org/10.3892/ol.2019.10704
MLA
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., Zhang, Z."Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma". Oncology Letters 18.4 (2019): 3716-3722.
Chicago
Tian, X., Gao, S., Liu, Y., Xuan, Y., Wu, R., Zhang, Z."Long non‑coding RNA ENST00000500843 is downregulated and promotes chemoresistance to paclitaxel in lung adenocarcinoma". Oncology Letters 18, no. 4 (2019): 3716-3722. https://doi.org/10.3892/ol.2019.10704
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