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http://dx.doi.org/10.7314/APJCP.2012.13.5.2115

Hypoxia-Inducible Factor 1 Promoter-Induced JAB1 Overexpression Enhances Chemotherapeutic Sensitivity of Lung Cancer Cell Line A549 in an Anoxic Environment  

Hu, Ming-Dong (Institute of Respiration, the Second Affiliated Hospital, the Third Military Medical University)
Xu, Jian-Cheng (Institute of Respiration, the Second Affiliated Hospital, the Third Military Medical University)
Fan, Ye (Institute of Respiration, the Second Affiliated Hospital, the Third Military Medical University)
Xie, Qi-Chao (Department of Tumors, the Second Affiliated Hospital, the Third Military Medical University)
Li, Qi (Institute of Respiration, the Second Affiliated Hospital, the Third Military Medical University)
Zhou, Chang-Xi (The General Hospital of PLA)
Mao, Mei (Wuhan General Hospital of Guangzhou Military Regions)
Yang, Yu (Institute of Respiration, the Second Affiliated Hospital, the Third Military Medical University)
Publication Information
Asian Pacific Journal of Cancer Prevention / v.13, no.5, 2012 , pp. 2115-2120 More about this Journal
Abstract
The presence of lung cancer cells in anoxic zones is a key cause od chemotherapeutic resistance. Thus, it is necessary to enhance the sensitivity of such lung cancer cells. However, loss of efficient gene therapeutic targeting and inefficient objective gene expression in the anoxic zone in lung cancer are dilemmas. In the present study, a eukaryotic expression plasmid pUC57-HRE-JAB1 driven by a hypoxia response elements promoter was constructed and introduced into lung cancer cell line A549. The cells were then exposed to a chemotherapeutic drug cis-diamminedichloroplatinum (C-DDP). qRT-PCR and western blotting were used to determine the mRNA and protein level and flow cytometry to examine the cell cycle and apoptosis of A549 transfected pUC57-HRE-JAB1. The results showed that JAB1 gene in the A549 was overexpressed after the transfection, cell proliferation being arrested in G1 phase and the apoptosis ratio significantly increased. Importantly, introduction of pUC57-HRE-JAB1 significantly increased the chemotherapeutic sensitivity of A549 in an anoxic environment. In conclusion, JAB1 overexpression might provide a novel strategy to overcome chemotherapeutic resistance in lung cancer.
Keywords
Lung cancer; hypoxia-inducible factor; JAB1; chemotherapeutic sensitivity; resistance; cisplatin;
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Times Cited By KSCI : 2  (Citation Analysis)
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