ArticleZhongguo fei ai za zhi = Chinese journal of lung cancer2020
[Down-regulation of HOTAIR Reverses the Resistance of Gefitinib in HCC827 Cells by Increasing the Expression of PTEN].
Article in Zhongguo fei ai za zhi = Chinese journal of lung cancer, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 1 citations in OpenAlex.
- lncRNA HOTAIR in Cancer: Recent Advances and Critical Perspectives on Molecular Mechanisms.Cancer management and research · 2026Review
- Different therapeutic responses to osimertinib as first-line treatment for cavitated and non-cavitated squamous cell lung cancer with rare EGFR exon 19 deletion: two case reports and a literature review.Frontiers in oncology · 2025Article
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5 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundLung cancer is the most common cancer worldwide with the highest morbidity and mortality, in which the non-small cell lung cancer accounts for 80% of all cases. The expression of (HOX transcript antisense RNA) HOTAIR were abnormal in a variety of tumor tissues and is involved in the regulation of the occurrence and development of lung cancer. The purpose of this study is to investigate the effect and mechanism of down-regulation of HOTAIR on gefitinib resistance of lung adenocarcinoma HCC827 cells by targeting PTEN.
methodsThe HOTAIR downstream target gene was predicted by bioinformatics database. The small interfering RNAs (siRNA) which is corresponding to HOTAIR was transfected using Lipofectamine™ 2000. Quantitative real-time PCR (RT-qPCR) and Western blot were used to detect the expression of HOTAIR, PTEN, PI3K and AKT in HCC827 and HCC827GR cells. MTT assay was used to detect the changes in drug resistance of HCC827GR cells. Flow cytometry analysis were used to test the cell proliferation and the rate of apoptosis.
resultsThe expression of HOTAIR increased in HCC827GR and the serum of NSCLC patients with gefitinib resistance (P<0.05). Transfection of HOTAIR siRNA decreased the expression of HOTAIR (P<0.05), and increased the expressions of PTEN (P<0.05), while the expression of PI3K and AKT were decreased (P<0.05). Compared with the blank control group, down-regulation of HOTAIR increased the sensitivity of HCC827GR cells to gefitinib. The cell proliferation ability was decreased and the apoptosis was promoted apparently (P<0.05).
conclusionsDown-regulation of HOTAIR can suppress the cell growth and promote the apoptosis, and it can reverse the resistance of HCC827GR cells to gefitinib. Its potential mechanism may be related with the targeting of PTEN/PI3K/AKT pathway.
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