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MCF-7 유방암 세포주에 있어서 spermine에 의해 유도된 세포사멸 기작

Mechanism of Apoptosis Induced by Spermine in MCF-7 Breast Cancer Cells

  • 장은성 (부산대학교 자연대 생물학과) ;
  • 김병기 (부산대학교 자연대 생물학과)
  • Jang, Eun-Seong (Department of Biology, College of Natural Sciences, Pusan National University) ;
  • Kim, Byeong-Gee (Department of Biology, College of Natural Sciences, Pusan National University)
  • 발행 : 2008.09.30

초록

폴리아민은 미생물에서부터 동.식물에 이르기 까지 모든 세포들에서 발견되는 극성을 띈 분자이다. 세포의 성장과 분화에 폴리아민이 중요한 역할을 한다는 것은 이미 오래 전부터 알려져 온 사실이나 정확한 작용 기작은 잘 밝혀져 있지 않다. 최근에 와서는 폴리아민이 다양한 방법으로 세포 독성을 유발한다는 결과가 보고되고 있다. 본 연구에서는 spm의 세포독성 효과가 세포 내 칼슘이온 농도 증가에 따른 미토콘드리아-의존 기작에 의하여 일어난다는 것을 보여준다. Spm에 의해 유도된 세포 내 칼슘이온 농도 증가는 주로 외부로부터의 칼슘 유입에 의한 것으로 생각되며, 세포 내 칼슘 증가는 미토콘드리아로부터의 cytochrome c 방출과 미토콘드리아막의 탈분극에 의한 membrane potential 변화를 초래하였다. 세포사멸에 주도적인 역할을 하는 caspase의 확인에 있어서는, MCF-7 세포는 caspase-3이 결핍되어서 caspase-7이 중심적인 역할을 하는 것으로 이미 알려져 있다. 본 연구에서 확인 한 결과 spm 처리 시 caspase-7과 -12가 활성화되었다. 또한 세포사멸 조절 단백질인 Bcl-2 종류 단백질들의 발현을 조사 한 결과 세포사멸 억제 단백질인 Bcl-2의 발현은 크게 억제되었으며, 촉진단백질인 Bax는 spm 처리시 단백질 양이 거의 2배로 증가되었다. 이상의 결과에 의하면, spm에 의해 유도되는 세포사멸과정은 세포질 내 칼슘이온 농도 증가에 의한 미토콘드리아의 변화가 주도적인 역할을 하는 것으로 생각된다.

In the present work, we show that spermine (spm)-induced cytotoxicity is due to the mitochondrial-dependent pathway triggered by the intracellular $Ca^{2+}$ increase in MCF-7 human breast cancer cells. Spm induced the intracellular $Ca^{2+}$ increase in a dose-dependent manner in the medium containing 1.5 mM $Ca^{2+}$. Even in the $Ca^{2+}$-free medium, spm could induce a minor $Ca^{2+}$ increase in a dose-dependent fashion, suggesting a probable leak from the internal storage. The cytotoxic effect of $Ca^{2+}$ could be further proved by using either BAPTA or ionophore. Spm-induced $Ca^{2+}$ increase led to the release of cytochrome c from mitochondria into the cytosol and the change of mitochondrial membrane potential. In MCF-7 cells, caspase-7 plays a key role in the downstream of apoptosis because caspase-3 is absent. In the cells treated with spm, the cleavage of caspase-7 and -12 was increased almost two-fold. The level of anti-apoptotic Bcl-2 protein decreased to 35% of the control; however, the cells showed increased expression of pro-apoptotic Bax protein about two-fold in response to spm. These results imply that the apoptotic signaling pathway activated by spm is likely to be mediated via the mitochondrial-dependent pathway.

키워드

참고문헌

  1. Arancia, G., A. Calcabrini, M. Marra, P. Crateri, M. Artico, A Martone, F. Martelli and E. Agostinelli. 2004. Mitochondrial alterations induced by serum amine oxidase and spermine on human multidrug resistant tumor cells. Amino Acids 26, 273-282.
  2. Averill-Bates, D. A., Q. Ke, A Tanel, J. Roy, G. Fortier and E. Agostinelli. 2008. Mechanism of cell death induced by spermine and amine oxidase in mouse melanoma cells. Int. J. Oncol. 32, 79-88.
  3. Baffy, G,, T. Miyashita, J. R. Williamson and J. C. Reed. 1993. Apoptosis induced by withdrawal of interleukin-3 (IL-3) from an IL-3 dependent hematopoietic cell line is associated with repartitioning of intracellular calcium and is blocked by enforced Bcl-2 oncoprotein production. J. BioI. Chem. 268, 6511-6519.
  4. Boatright, K. M. and G. S. Salvensen. 2003. Mechanisms of caspase activation. Curr. Opinion Cell BioI. 15, 725-731. https://doi.org/10.1016/j.ceb.2003.10.009
  5. Demaurex, N. and C. Distelhorst. 2003. Apoptosis-the calcium connection. Science 300, 65-67. https://doi.org/10.1126/science.1083628
  6. Hajnoczky, G, E. Davis and M. Medesh. 2003. Calcium signaling and apoptosis. Biochem. Biophys. Res. Comm. 304, 445-454. https://doi.org/10.1016/S0006-291X(03)00616-8
  7. Han, L., C. Xu, C. Jiang, H. Li, W. Zhang, Y. Zhao, L. Zhang, Y. Zhang, W. Zhao and B. Yang. 2007. Effects of polyamines on apoptosis induced by simulated ischemia/reperfusion injury in cultured neonatal rat cardiomyocytes. Cell BioI. Int. 31, 1345-1352. https://doi.org/10.1016/j.cellbi.2007.05.015
  8. Harman, A. W. and M. J. Maxwell. 1995. An evaluation of the role of calcium in cell injury. Ann. Rev. Pharmacol. Toxicol. 35, 129-144. https://doi.org/10.1146/annurev.pa.35.040195.001021
  9. Janicke, R. U., M. L. Sprengart, M. R. Wati and A. G. Porter. 1998. Caspase-3 is required for DNA fragmentation and morphological changes associated with apoptosis. J. BioI. Chem. 273, 9357-9360. https://doi.org/10.1074/jbc.273.16.9357
  10. Kroemer, G. and J. C. Reed. 2000. Mitochondrial control of cell death. Nat. Med. 6, 513-519. https://doi.org/10.1038/74994
  11. Lambert, P. A., K. D. Somers, E. C. Kohn and R. R. Perry. 1997. Antiproliferative and antiinvasive effects of carboxyamidotriazole on breast cancer lines. Surgery 122, 372-378. https://doi.org/10.1016/S0039-6060(97)90029-5
  12. Lee, W. J., S. J. Robert-Thomson, N. A. Holman, F. J. May, G. M. Lehrbach and G. R. Monteith. 2002. Expression of plasma membrane calcium pump isoform mRNA in breast cancer cell lines. Cell Signal. 14, 1015-1022. https://doi.org/10.1016/S0898-6568(02)00049-9
  13. Lenzen, S., W. Munster and I. Rustenbeck. 1992. Dual effect of spermine on mitochondrial $Ca^{2+}$ transport. Biochem. J. 286, 597-602.
  14. Nutt, L. K., A. Pataer, J. Pahler, B. Fang, J. Roth, D. J. McConkey and S. G. Swisher. 2002. Bax and bak promote apoptosis by modulating endoplasmic reticular and mitochondrial calcium stores. J. BioI. Chem. 277, 9219-9225. https://doi.org/10.1074/jbc.M106817200
  15. Pacher, P. and G. Hajnoczky. 2001. Propagation of the apoptotic signal by mitochondrial waves. EMBO J. 20, 4107-4121. https://doi.org/10.1093/emboj/20.15.4107
  16. Pignatti, C., B. Tantini, C. Stefanelli and F. Flamigni. 2004. Signal transduction pathways linking polyamines to apoptosis. Amino Acids 27, 359-365. https://doi.org/10.1007/s00726-004-0115-3
  17. Rossi, A. M., G. Picotto, A. R. de Boland and R. L. Boland. 2002. Evidence on the operation of ATP-induced capacitative calcium entry in breast cancer cells and its blockade by 17 beta-estradiol. J. Cell Biochem. 87, 324-333. https://doi.org/10.1002/jcb.10303
  18. Salvi, M. and A. Toninello, 2004. Effects of polyamines on mitochondrial $Ca^{2+}$ transport. Biochim. Biophys. Acta. 1661, 113-124 https://doi.org/10.1016/j.bbamem.2003.12.005
  19. Schendel, S. L., Z. Xie, M. O. Montal, S. Mastumyama, M. Mental and J. C. Reed. 1997. Channel formation by antiapoptotic protein Bcl-2. Prog. Biophys. Mol. BioI. 64, 5113-5118.
  20. Schipper, R. G., L. C. Penning and A. A. Verhofstad. 2000. Involvement of polyamines in apoptosis, Facts and controversies: effectors or protectors? Cancer BioI. 10, 55-68. https://doi.org/10.1006/scbi.2000.0308
  21. Stefanelli, C., F. Bonavita, I. Stanic, M. Mignani, A. Facchini, C. Pignatti, F. Flamigni and C. Caldarera, 1998. Spermine causes caspase activation in leukaemia cells. FEBS Lett. 437, 233-236. https://doi.org/10.1016/S0014-5793(98)01239-3
  22. Stefanelli, C., F. Bonavita, I. Stante, C. Pignatti, F. Flamigni, C. Guarnieri and C. Caldarera, 1999. Spermine triggers the activation of caspase-3 in a cell-free model of apoptosis. FEBS Lett. 451, 95-98. https://doi.org/10.1016/S0014-5793(99)00549-9
  23. Thomas, T. and T. J. Thomas. 2001. Polyamines in cell growth and cell death: molecular mechanisms and therapeutic applications. Cell Mol. Life Sci. 58, 244-258. https://doi.org/10.1007/PL00000852
  24. Twiddy, D., G. M. Cohen, M. MacFarlane and K. Cain. 2006. Caspase-7 is directly activated by ${\sim}$700 kDa apoptosime complex and is released as a stable XIAP-caspase-7 ${\sim}$ 200 kDa complex. J. Biol. Chem. 281, 3876-3888. https://doi.org/10.1074/jbc.M507393200
  25. Wang, R., C. Xu, W. Zhao, J. Zhang, K. Cao, B. Yang and L. Wu. 2003. Calcium and polyamine regulated calcium-sensing receptors in cardiac tissues. Eur. J. Biochem. 270, 2680-2688. https://doi.org/10.1046/j.1432-1033.2003.03645.x
  26. Wei, G, K. DeFeo, C. S. Hayes, P. M. Wester, L. Mandik-Nayak and S. K. Gilmour. 2008. Elevated ornithine decarboxylase levels activate ataxia telangiectasia mutated-DNA damage signaling in normal keratinocytes. Cancer Res. 68, 2214-2222. https://doi.org/10.1158/0008-5472.CAN-07-5030
  27. Zong, W. X., C. Li, G. Hatzivassiliou, T. Lindsten, Q. C. Yu, J. Yuan and C. B. Thompson. 2003. Bax and Bak can localize to the endoplasmic reticulum to initiate apoptosis, J. Cell BioI. 162, 59-69. https://doi.org/10.1083/jcb.200302084

피인용 문헌

  1. Modulation of Adhesion Proteins Integrin β1 and FAK, and Cytoskeletal Protein Actin by Spermine in MCF-7 Cells vol.22, pp.1, 2012, https://doi.org/10.5352/JLS.2012.22.1.16