Abstract
It has been proposed that a mitochondrial switch involving a high mitochondrial superoxide production is associated with cancer metastasis. We here report an EPR analysis of ROS production using cyclic hydroxylamines in superinvasive SiHa-F3 compared with less invasive SiHa wild-type human cervix cancer cells. Using the CMH probe, no significant difference was observed in the overall level of ROS between SiHa and SiHa-F3 cells. However, using mitochondria-targeted cyclic hydroxylamine probe mitoTEMPO-H, we detected a significantly higher mitochondrial ROS content in SiHa-F3 compared with the wild-type SiHa cells. To investigate the nature of mitochondrial ROS, we overexpressed superoxide dismutase 2, a SOD isoform exclusively localized in mitochondria, in SiHa-F3 superinvasive cells. A significantly lower signal was detected in SiHa-F3 cells overexpressing SOD2 compared with SiHa-F3. Despite some limitations discussed in the paper, our EPR results suggest that mitochondrial ROS (at least partly superoxide) are produced to a larger extent in superinvasive cancer cells compared with less invasive wild-type cancer cells.
Similar content being viewed by others
References
Porporato, P. E., Payen, V. L., Perez-Escuredo, J., De Saedeleer, C. J., Danhier, P., Copetti, T., Dhup, S., Tardy, M., Vazeille, T., & Bouzin, C., et al. (2014). A mitochondrial switch promotes tumor metastasis. Cell Reports, 8, 754–766.
Zhao, H., Joseph, J., Fales, H. M., Sokoloski, E. A., Levine, R. L., Vasquez-Vivar, J., & Kalyanaraman, B. (2005). Detection and characterization of the product of hydroethidine and intracellular superoxide by HPLC and limitations of fluorescence. Proceedings of the National Academy of Sciences of the United States of America, 102, 5727–5732.
Zielonka, J., & Kalyanaraman, B. (2010). Hydroethidine- and MitoSOX-derived red fluorescence is not a reliable indicator of intracellular superoxide formation: another inconvenient truth. Free Radical Biology and Medicine, 48, 983–1001.
Kalyanaraman, B., Darley-Usmar, V., Davies, K. J., Dennery, P. A., Forman, H. J., Grisham, M. B., Mann, G. E., Moore, K., Roberts, 2nd, L. J., & Ischiropoulos, H. (2012). Measuring reactive oxygen and nitrogen species with fluorescent probes: challenges and limitations. Free Radical Biology and Medicine, 52, 1–6.
Kalyanaraman, B., Dranka, B. P., Hardy, M., Michalski, R., & Zielonka, J. (2014). HPLC-based monitoring of products formed from hydroethidine-based fluorogenic probes–the ultimate approach for intra- and extracellular superoxide detection. Biochimica et Biophysica Acta, 1840, 739–744.
Zielonka, J., Hardy, M., Michalski, R., Sikora, A., Zielonka, M., Cheng, G., Ouari, O., Podsiadly, R., & Kalyanaraman, B. (2017). Recent developments in the probes and assays for measurement of the activity of NADPH oxidases. Cell Biochemistry and Biophysics, 75, 335–349.
Kalyanaraman, B., Cheng, G., Hardy, M., Ouari, O., Bennett, B., & Zielonka, J. (2018). Teaching the basics of reactive oxygen species and their relevance to cancer biology: Mitochondrial reactive oxygen species detection, redox signaling, and targeted therapies. Redox Biology, 15, 347–362.
Scheinok, S., Leveque, P., & Gallez, B. (2018). Comparison of different methods for measuring the superoxide radical by EPR spectroscopy in buffer, cell lysates and cells. Free Radical Research, 52, 1182–1196.
Dikalov, S. I., Kirilyuk, I. A., Voinov, M., & Grigor’ev, I. A. (2011). EPR detection of cellular and mitochondrial superoxide using cyclic hydroxylamines. Free Radical Research, 45, 417–430.
Scheinok, S., Driesschaert, B., d’Hose, D., Sonveaux, P., Robiette, R., & Gallez, B. (2019). Synthesis and characterization of a 5-membered ring cyclic hydroxylamine coupled to triphenylphosphonium to detect mitochondrial superoxide by EPR spectrometry. Free Radical Research, 53, 1135–1143.
Van Hee, V. F., Perez-Escuredo, J., Cacace, A., Copetti, T., & Sonveaux, P. (2015). Lactate does not activate NF-κB in oxidative tumor cells. Frontiers in Pharmacology, 6, 228.
Dikalov, S. I., Li, W., Mehranpour, P., Wang, S. S., & Zafari, A. M. (2007). Production of extracellular superoxide by human lymphoblast cell lines: comparison of electron spin resonance techniques and cytochrome C reduction assay. Biochemical Pharmacology, 73, 972–980.
Yang, W., Zou, L., Huang, C., & Lei, Y. (2014). Redox regulation of cancer metastasis: molecular signaling and therapeutic opportunities. Drug Development Research, 75, 331–341.
Ishikawa, K., Takenaga, K., Akimoto, M., Koshikawa, N., Yamaguchi, A., Imanishi, H., Nakada, K., Honma, Y., & Hayashi, J. (2008). ROS-generating mitochondrial DNA mutations can regulate tumor cell metastasis. Science, 320, 661–664.
Dikalov, S. I., Polienko, Y. F., & Kirilyuk, I. (2018). Electron paramagnetic resonance measurements of reactive oxygen species by cyclic hydroxylamine spin probes. Antioxidants & Redox Signaling, 28, 1433–1443.
Chen, K., & Swartz, H. M. (1988). Oxidation of hydroxylamines to nitroxide spin labels in living cells. Biochimica et Biophysica Acta, 970, 270–277.
Palazzolo-Balance, A. M., Suquet, C., & Hurst, J. K. (2007). Pathways for intracellular generation of oxidants and tyrosine nitration by a macrophage cell line. Biochemistry, 46, 7536–7548.
Dikalova, A. E., Bikineyeva, A. T., Budzyn, K., Nazarewicz, R. R., McCann, L., Lewis, W., Harrison, D. G., & Dikalov, S. I. (2010). Therapeutic targeting of mitochondrial superoxide in hypertension. Circulation Research, 107, 106–116.
Keana, J. F. W., Pou, S., & Rosen, G. M. (1987). Nitroxides as potential contrast enhancing agents for MRI application: influence of structure on the rate of reduction by rat hepatocytes, whole liver homogenate, subcellular fractions, and ascorbate. Magnetic Resonance in Medicine, 5, 525–536.
Cheng, G., Zielonka, J., McAllister, D., Hardy, M., Ouari, O., Joseph, J., Dwinell, M. B., & Kalyanaraman, B. (2015). Antiproliferative effects of mitochondria-targeted cationic antioxidants and analogs: role of mitochondrial bioenergetics and energy-sensing mechanism. Cancer Letters, 365, 96–106.
Reily, C., Mitchell, T., Chacko, B. K., Benavides, G., Murphy, M. P., & Darley-Usmar, V. (2013). Mitochondrially targeted compounds and their impact on cellular bioenergetics. Redox Biology, 1, 86–93.
Acknowledgements
This study was supported by grants from French Community of Belgium (ARC 14/19-058), the Belgian Fonds National de la Recherche Scientifique (F.R.S.-FNRS, J0.209.16), the Belgian Télévie (7.4557.15) and the Fondation Louvain. PS is a F.R.S.-FNRS Senior Research Associate.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of Interest
The authors declare that they have no conflict of interest.
Additional information
Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Special Issue: XIth International Workshop on EPR in Biology and Medicine. This paper was presented as a poster during the meeting.
Rights and permissions
About this article
Cite this article
Scheinok, S., Capeloa, T., Porporato, P.E. et al. An EPR Study Using Cyclic Hydroxylamines To Assess The Level of Mitochondrial ROS in Superinvasive Cancer Cells. Cell Biochem Biophys 78, 249–254 (2020). https://doi.org/10.1007/s12013-020-00921-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12013-020-00921-6