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Research ArticleExperimental Studies

Anticancer Mechanism of Plumbagin, a Natural Compound, on Non-small Cell Lung Cancer Cells

ROHINI GOMATHINAYAGAM, SRINIVASAN SOWMYALAKSHMI, FIRDAUS MARDHATILLAH, RAJ KUMAR, MOHAMMAD A. AKBARSHA and CHENDIL DAMODARAN
Anticancer Research March 2008, 28 (2A) 785-792;
ROHINI GOMATHINAYAGAM
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SRINIVASAN SOWMYALAKSHMI
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FIRDAUS MARDHATILLAH
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RAJ KUMAR
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MOHAMMAD A. AKBARSHA
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CHENDIL DAMODARAN
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  • For correspondence: dchen2@uky.edu
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Abstract

Background: Lung cancer is the leading cause of cancer-related deaths in the United States. Prevailing treatment options have limited therapeutic success in lung cancer, particularly non-small cell lung cancer (NSCLC), as it becomes resistant to therapy. Hence, better therapeutic options are immediately required for lung cancer. Plumbagin, a natural compound has been recently examined for its anticancer effect on different cancers. Materials and Methods: To determine the anticancer effect of plumbagin on NSCLC cell lines H460 and A549, cell viability, apoptotic, Western blot and reporter assays were performed. Results: Plumbagin significantly inhibited the growth of H460 cells compared to A549 cells, and down-regulated the expression of EGFR/Neu and its downstream signaling (Akt, NF-κB, Bcl-2 and survivin) in H460 cells. In addition, plumbagin up-regulated the expression of p53 and p21CIP1/WAF1 causing cell cycle arrest in the G2/M-phase by down-regulating G2/M regulatory proteins (cyclinB1 and Cdc25B) in H460 cells. Furthermore, it activated the JNK/p38 signaling, leading to caspase-3 activation resulting in the induction of apoptosis. Conclusion: Plumbagin exerted anticancer activity on NSCLC cells by modulating the pro-survival and pro-apoptotic signaling that causes induction of apoptosis.

  • Apoptosis
  • pro-apoptotic genes
  • cell cycle
  • lung cancer
  • plumbagin
  • Received November 19, 2007.
  • Revision received January 14, 2008.
  • Accepted February 12, 2008.
  • Copyright© 2008 International Institute of Anticaner Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 28 (2A)
Anticancer Research
Vol. 28, Issue 2A
March-April 2008
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Anticancer Mechanism of Plumbagin, a Natural Compound, on Non-small Cell Lung Cancer Cells
ROHINI GOMATHINAYAGAM, SRINIVASAN SOWMYALAKSHMI, FIRDAUS MARDHATILLAH, RAJ KUMAR, MOHAMMAD A. AKBARSHA, CHENDIL DAMODARAN
Anticancer Research Mar 2008, 28 (2A) 785-792;

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Anticancer Mechanism of Plumbagin, a Natural Compound, on Non-small Cell Lung Cancer Cells
ROHINI GOMATHINAYAGAM, SRINIVASAN SOWMYALAKSHMI, FIRDAUS MARDHATILLAH, RAJ KUMAR, MOHAMMAD A. AKBARSHA, CHENDIL DAMODARAN
Anticancer Research Mar 2008, 28 (2A) 785-792;
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