Abstract
Current methods to monitor cellular ATP do not provide spatial or temporal localization of ATP in single cells in real time or they display imperfect specificity to ATP. Here, we have developed a single cell, Enhanced Acceptor Fluorescence (EAF)-based ATP biosensor to visualize ATP in real time. This biosensor utilizes a modified mimic of the ε-subunits of the Bacillus subtilis F0F1 synthase and is coupled to the EAF fluorophores pairs, GFP and YFP. The sensor was then used to monitor ATP in a heterogeneous glioblastoma multiform cancer cell population. We anticipate that this innovative technology and our better understanding of the ATP machinery will have substantial influence on future translational studies.
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Acknowledgments
We would also like to thank Dr. Raphael Levine (UCLA) and Dr. Michel Baudry (USC) for critical analysis and discussions. We would like to thank the UCLA Brain Tumor Translational Resource for biospecimen support. The UCLA David Geffen School of Medicine for early career funds to S. Zadran and the National Science Foundation Graduate Research Fellowship Program (GRFP) to H. Zadran supported this work.
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Zadran, S., Sanchez, D., Zadran, H. et al. Enhanced-acceptor fluorescence-based single cell ATP biosensor monitors ATP in heterogeneous cancer populations in real time. Biotechnol Lett 35, 175–180 (2013). https://doi.org/10.1007/s10529-012-1065-6
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DOI: https://doi.org/10.1007/s10529-012-1065-6