Abstract
Measuring cellular metabolism accurately is necessary to understand bioenergetic pathways in cells. The major ATP generating pathways in cells are oxidative phosphorylation and glycolysis. We have recently analyzed and published bioenergetic pathways active in osteoblasts undergoing differentiation in response to various substrates. Based on those studies, here we provide step-by-step procedures to isolate, culture, plate and run a seahorse assay for measuring cellular metabolism. Furthermore, we provide an example of oxygen consumption and extracellular acidification rate traces obtained from MC3T3E1-C4 cells using the XFe96 seahorse analyzer. One of the limitations of studying bioenergetics in bone cells is the current lack of techniques to analyze bioenergetics in vivo in live animals. There are currently techniques that have been developed using third harmonic generation to study osteocytes using three-photon microscopy along with metabolic changes using endogenous two-photon excited fluorescence. However, these sophisticated techniques are not widely available. The relative ease with which one can obtain data pertaining to metabolic parameters using the XF technology makes it a very attractive technique to utilize on a monolayer of adherent cells.
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Acknowledgments
This work was funded by NIGMS to A.R.G. through P20GM121301, Phase I: Mesenchymal and Neural Regulation of Metabolic Networks, Lucy Liaw, PhD, Program Director.
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Tian, L., Rosen, C.J., Guntur, A.R. (2021). Mitochondrial Function and Metabolism of Cultured Skeletal Cells. In: Hilton, M.J. (eds) Skeletal Development and Repair. Methods in Molecular Biology, vol 2230. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1028-2_27
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DOI: https://doi.org/10.1007/978-1-0716-1028-2_27
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