Expression of ATP binding cassette E1 enhances viability and invasiveness of lung adenocarcinoma cells in vitro

Tian,Ye; Tian,Xin; Han,Xu; Chen,Yong; Song,Cheng‑Yang; Zhang,Yan‑Bin; Tian,Da‑Li

doi:10.3892/mmr.2016.5388

Expression of ATP binding cassette E1 enhances viability and invasiveness of lung adenocarcinoma cells in vitro

Authors:
- Ye Tian
- Xin Tian
- Xu Han
- Yong Chen
- Cheng‑Yang Song
- Yan‑Bin Zhang
- Da‑Li Tian
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Affiliations: Department of Thoracic Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning 110032, P.R. China, Department of Molecular Oncology, Cancer Research Institute, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110032, P.R. China
Published online on: June 10, 2016 https://doi.org/10.3892/mmr.2016.5388
Pages: 1345-1350

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Abstract

ATP binding cassette E1 (ABCE1), a member of the family of ATP binding cassette transporters, has initially emerged as an RNase L inhibitor. As a highly conserved protein, it is involved in capsid assembly and translation processes of the human immunodeficiency virus as well as in tumor development and progression. Studies have shown that ABCE1 protein was overexpressed in lung carcinoma tissues and metastatic lymph nodes compared to normal lung tissues. However, little is known about the roles of ABCE1 in lung cancer. The present study investigated the biological effects of vector-mediated ABCE1 overexpression in lung cancer cells in vitro and examined the underlying molecular mechanisms. Overexpression of ABCE1 in the LTEP‑a-2 lung adenocarcinoma cell line was achieved by transfection with a plasmid containing full‑length ABCE1 cDNA. The ectopic expression of ABCE1 was shown to promote the viability and invasive capacity of lung cancer cells, and to in reduce p27 expression. However, overexpression of ABCE1 did not significantly affect the cell cycle distribution. In conclusion, the present study suggested that ABCE1 promotes the growth, invasion and metastasis of lung adenocarcinoma cells and may represent a potential biomarker and therapeutic target for lung cancer.

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