Influence of delta-like 1 on chemotherapeutic sensitivity of small cell lung cancer

  • Huanxin Liu Department of Pathology, Guangdong Provincial Corps Hospital of Chinese People's Armed Police Forces, Guangzhou Medical College, Guangzhou, 268 Yanling Road, Guangzhou 510507
  • Yan Zhang Department of Pathology, Guangdong Provincial Corps Hospital of Chinese People's Armed Police Forces, Guangzhou Medical College, Guangzhou, 268 Yanling Road, Guangzhou 510507
  • Zuoping Huang Department of Oncology, Guangdong Provincial Corps Hospital of Chinese People's Armed Police Forces, Guangzhou Medical College, Guangzhou, 268 Yanling Road, Guangzhou 510507
  • Linlang Guo Department of Pathology, Zhujiang Hospital, Southern Medical University, 253 Gongye Road, Guangzhou 510282
Keywords: Delta-like 1, Multidrug resistance, Small cell lung cancer


Our study investigated the role of delta-like 1 (DLL1) in multi-drug resistance of small cell lung cancer. Differentially expressed genes were detected in resistant small cell lung cancer H69AR cells and sensitive small cell lung cancer H69 cells by microarray. DLL1 expression in H69 cells and H69AR cells was further confirmed by RT-PCR and Western blot assay. eGFP-RNA was employed to up-regulate DDL1 expressing in H69AR cells (H69AR-eGFP-DLL1) by transfection. These cells were treated with different chemotherapeutics (ADM, DDP, and VP-16). Cell viability was detected. Cell cycle and apoptosis rate were determined. The DLL1 expression was significantly decreased in H69AR cells when compared with H69 cells. Over-expression of DLL1 increased the sensitivity of H69AR cells to chemotherapy, which was characterized by increase in apoptosis and arrest in G0/G1 phase. Our results demonstrate that up-regulation of DLL1 expression in small cell lung cancer cells may increase their sensitivity to chemotherapeutic agents.


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How to Cite
Liu, H., Y. Zhang, Z. Huang, and L. Guo. “Influence of Delta-Like 1 on Chemotherapeutic Sensitivity of Small Cell Lung Cancer”. Bangladesh Journal of Pharmacology, Vol. 8, no. 2, Apr. 2013, pp. 171-6, doi:10.3329/bjp.v8i2.14234.
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