Abstract
Only a few techniques are currently available for quantifying systemic metastases in preclinical models. Cancer cell expression of naturally secreted Gaussia luciferase (Gluc) provides a useful circulating biomarker that enables the monitoring of metastatic tumor burden and of treatment response from minimal drops of blood. This blood-based Gluc assay exhibits several distinct advantages: (1) It is highly sensitive in quantifying metastatic tumor growth, particularly when compared to whole-body bioluminescence imaging (BLI) alone; (2) It is quantitative by nature and reflects viable tumor burden in a minimally invasive manner; (3) Through longitudinal collection of blood samples, treatment response can be monitored in real-time; and (4) Gluc bioluminescence provides a means to localize and assess metastatic colonization using BLI. By elucidating the progression of systemic metastases and therapeutic response in animal models, the blood-based Gluc assay is emerging as a valuable quantitative tool for novel drug development.
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Acknowledgements
The authors are grateful for the support of the Steele Laboratory for Tumor Biology (PI: Rakesh K. Jain) and Prof. Bakhos A. Tannous at the Massachusetts General Hospital. This work was supported by grants from the Institute of Medical System Engineering and the Bio Imaging Research Center at Gwangju Institute of Science and Technology (GIST); Basic Research Projects in High-tech Industrial Technology at GIST; the Institute of Medical System Engineering at GIST; the Bio & Medical Technology Development Program and Basic Science Program through the National Research Foundation of Korea Grants 2011-0019633 and 2012R1A1A1012853, and the Tosteson postdoctoral fellowship at the Massachusetts General Hospital (to E.C.)
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Yamashita, H., Nguyen, D.T., Chung, E. (2014). Blood-Based Assay with Secreted Gaussia Luciferase to Monitor Tumor Metastasis. In: Badr, C. (eds) Bioluminescent Imaging. Methods in Molecular Biology, vol 1098. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-718-1_12
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DOI: https://doi.org/10.1007/978-1-62703-718-1_12
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