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Dual Inhibition of PI3K/Akt/mTOR Pathway and Role of Autophagy in Non-Small Cell Lung Cancer Cells

  • Jeong, Eun-Hui (Division of Pulmonology, Department of Internal Medicine, Korea Cancer Center Hospital) ;
  • Choi, Hyeong-Sim (Division of Pulmonology, Department of Internal Medicine, Korea Cancer Center Hospital) ;
  • Lee, Tae-Gul (Division of Pulmonology, Department of Internal Medicine, Korea Cancer Center Hospital) ;
  • Kim, Hye-Ryoun (Division of Pulmonology, Department of Internal Medicine, Korea Cancer Center Hospital) ;
  • Kim, Cheol-Hyeon (Division of Pulmonology, Department of Internal Medicine, Korea Cancer Center Hospital)
  • Received : 2012.01.16
  • Accepted : 2012.03.05
  • Published : 2012.04.30

Abstract

Background: The phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling axis has emerged as a novel target for cancer therapy. Agents that inhibit this pathway are currently under development for lung cancer treatment. In the present study, we have tested whether dual inhibition of PI3K/Akt/mTOR signaling can lead to enahnced antitumor effects. We have also examined the role of autophagy during this process. Methods: We analyzed the combination effect of the mTOR inhibitor, temsirolimus, and the Akt inhibitor, GSK690693, on the survival of NCI-H460 and A549 non-small cell lung cancer cells. Cell proliferation was determined by MTT assay and apoptosis induction was evaluated by flow cytometry and terminal deoxynucleotidyl transferase dUTP nick end labeling assay. Autophagy induction was also evaluated by acridine orange staining. Changes of apoptosis or autophagy-related proteins were evaluated by western blot analysis. Results: Combination treatment with temsirolimus and GSK690693 caused synergistically increased cell death in NCI-H460 and A549 cells. This was attributable to increased induction of apoptosis. Caspase 3 activation and poly(ADP-ribose) polymerase cleavage accompanied these findings. Autophagy also increased and inhibition of autophagy resulted in increased cell death, suggesting its cytoprotective role during this process. Conclusion: Taken together, our results suggest that the combination of temsirolimus and GSK690693 could be a novel strategy for lung cancer therapy. Inhibition of autophagy could also be a promising method of enhancing the combination effect of these drugs.

Keywords

References

  1. Burnett PE, Barrow RK, Cohen NA, Snyder SH, Sabatini DM. RAFT1 phosphorylation of the translational regulators p70 S6 kinase and 4E-BP1. Proc Natl Acad Sci U S A 1998;95:1432-7. https://doi.org/10.1073/pnas.95.4.1432
  2. West KA, Linnoila IR, Belinsky SA, Harris CC, Dennis PA. Tobacco carcinogen-induced cellular transformation increases activation of the phosphatidylinositol 3'-kinase/Akt pathway in vitro and in vivo. Cancer Res 2004;64:446-51. https://doi.org/10.1158/0008-5472.CAN-03-3241
  3. Janku F, Stewart DJ, Kurzrock R. Targeted therapy in non-small-cell lung cancer: is it becoming a reality? Nat Rev Clin Oncol 2010;7:401-14. https://doi.org/10.1038/nrclinonc.2010.64
  4. Reungwetwattana T, Weroha SJ, Molina JR. Oncogenic pathways, molecularly targeted therapies, and highlighted clinical trials in non-small-cell lung cancer (NSCLC). Clin Lung Cancer 2011 Dec 6 [Epub]. http://dx.doi.org/10.1016/j.cllc.2011.09.004.
  5. Yamamoto H, Shigematsu H, Nomura M, Lockwood WW, Sato M, Okumura N, et al. PIK3CA mutations and copy number gains in human lung cancers. Cancer Res 2008;68:6913-21. https://doi.org/10.1158/0008-5472.CAN-07-5084
  6. Kawano O, Sasaki H, Endo K, Suzuki E, Haneda H, Yukiue H, et al. PIK3CA mutation status in Japanese lung cancer patients. Lung Cancer 2006;54:209-15. https://doi.org/10.1016/j.lungcan.2006.07.006
  7. Kawano O, Sasaki H, Okuda K, Yukiue H, Yokoyama T, Yano M, et al. PIK3CA gene amplification in Japanese non-small cell lung cancer. Lung Cancer 2007;58:159-60. https://doi.org/10.1016/j.lungcan.2007.06.020
  8. Hudes G, Carducci M, Tomczak P, Dutcher J, Figlin R, Kapoor A, et al. Temsirolimus, interferon alfa, or both for advanced renal-cell carcinoma. N Engl J Med 2007; 356:2271-81. https://doi.org/10.1056/NEJMoa066838
  9. Motzer RJ, Escudier B, Oudard S, Hutson TE, Porta C, Bracarda S, et al. Efficacy of everolimus in advanced renal cell carcinoma: a double-blind, randomised, placebo- controlled phase III trial. Lancet 2008;372:449-56. https://doi.org/10.1016/S0140-6736(08)61039-9
  10. Mita MM, Mita AC, Chu QS, Rowinsky EK, Fetterly GJ, Goldston M, et al. Phase I trial of the novel mammalian target of rapamycin inhibitor deforolimus (AP23573; MK-8669) administered intravenously daily for 5 days every 2 weeks to patients with advanced malignancies. J Clin Oncol 2008;26:361-7. https://doi.org/10.1200/JCO.2007.12.0345
  11. Soria JC, Shepherd FA, Douillard JY, Wolf J, Giaccone G, Crino L, et al. Efficacy of everolimus (RAD001) in patients with advanced NSCLC previously treated with chemotherapy alone or with chemotherapy and EGFR inhibitors. Ann Oncol 2009;20:1674-81. https://doi.org/10.1093/annonc/mdp060
  12. Molina JR, Mandrekar SJ, Rowland K, Reuter NF, Jett JR, Marks R, et al. A phase II NCCTG "window of opportunity front-line" study of the mTOR inhibitor, CCI-779 (temsirolimus) given as a single agent in patients with advanced NSCLC: D7-07. J Thorac Oncol 2007;2:S413.
  13. Ihle NT, Paine-Murrieta G, Berggren MI, Baker A, Tate WR, Wipf P, et al. The phosphatidylinositol-3-kinase inhibitor PX-866 overcomes resistance to the epidermal growth factor receptor inhibitor gefitinib in A-549 human non-small cell lung cancer xenografts. Mol Cancer Ther 2005;4:1349-57. https://doi.org/10.1158/1535-7163.MCT-05-0149
  14. Ihle NT, Williams R, Chow S, Chew W, Berggren MI, Paine-Murrieta G, et al. Molecular pharmacology and antitumor activity of PX-866, a novel inhibitor of phosphoinositide- 3-kinase signaling. Mol Cancer Ther 2004; 3:763-72.
  15. Rhodes N, Heerding DA, Duckett DR, Eberwein DJ, Knick VB, Lansing TJ, et al. Characterization of an Akt kinase inhibitor with potent pharmacodynamic and antitumor activity. Cancer Res 2008;68:2366-74. https://doi.org/10.1158/0008-5472.CAN-07-5783
  16. Sharma SV, Bell DW, Settleman J, Haber DA. Epidermal growth factor receptor mutations in lung cancer. Nat Rev Cancer 2007;7:169-81. https://doi.org/10.1038/nrc2088
  17. Arteaga CL. HER3 and mutant EGFR meet MET. Nat Med 2007;13:675-7. https://doi.org/10.1038/nm0607-675
  18. Janku F, Garrido-Laguna I, Petruzelka LB, Stewart DJ, Kurzrock R. Novel therapeutic targets in non-small cell lung cancer. J Thorac Oncol 2011;6:1601-12. https://doi.org/10.1097/JTO.0b013e31822944b3
  19. Marinov M, Fischer B, Arcaro A. Targeting mTOR signaling in lung cancer. Crit Rev Oncol Hematol 2007;63: 172-82. https://doi.org/10.1016/j.critrevonc.2007.04.002
  20. Gibbons JJ, Abraham RT, Yu K. Mammalian target of rapamycin: discovery of rapamycin reveals a signaling pathway important for normal and cancer cell growth. Semin Oncol 2009;36 Suppl 3:S3-17. https://doi.org/10.1053/j.seminoncol.2009.10.011
  21. Mallon R, Feldberg LR, Lucas J, Chaudhary I, Dehnhardt C, Santos ED, et al. Antitumor efficacy of PKI- 587, a highly potent dual PI3K/mTOR kinase inhibitor. Clin Cancer Res 2011;17:3193-203. https://doi.org/10.1158/1078-0432.CCR-10-1694
  22. Wallin JJ, Edgar KA, Guan J, Berry M, Prior WW, Lee L, et al. GDC-0980 is a novel class I PI3K/mTOR kinase inhibitor with robust activity in cancer models driven by the PI3K pathway. Mol Cancer Ther 2011;10:2426-36. https://doi.org/10.1158/1535-7163.MCT-11-0446
  23. Xu CX, Li Y, Yue P, Owonikoko TK, Ramalingam SS, Khuri FR, et al. The combination of RAD001 and NVP-BEZ235 exerts synergistic anticancer activity against non-small cell lung cancer in vitro and in vivo. PLoS One 2011;6:e20899. https://doi.org/10.1371/journal.pone.0020899
  24. Yuan J, Mehta PP, Yin MJ, Sun S, Zou A, Chen J, et al. PF-04691502, a potent and selective oral inhibitor of PI3K and mTOR kinases with antitumor activity. Mol Cancer Ther 2011;10:2189-99. https://doi.org/10.1158/1535-7163.MCT-11-0185
  25. Mathew R, White E. Autophagy in tumorigenesis and energy metabolism: friend by day, foe by night. Curr Opin Genet Dev 2011;21:113-9. https://doi.org/10.1016/j.gde.2010.12.008
  26. Maycotte P, Thorburn A. Autophagy and cancer therapy. Cancer Biol Ther 2011;11:127-37. https://doi.org/10.4161/cbt.11.2.14627
  27. Zois CE, Koukourakis MI. Radiation-induced autophagy in normal and cancer cells: towards novel cytoprotection and radio-sensitization policies? Autophagy 2009;5: 442-50. https://doi.org/10.4161/auto.5.4.7667

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