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Yan J, Lima Goncalves CF, Korfhage MO, Hasan MZ, Fan TWM, Wang X, Zhu C. Portable optical spectroscopic assay for non-destructive measurement of key metabolic parameters on in vitro cancer cells and organotypic fresh tumor slices. Biomed Opt Express 2023; 14:4065-4079. [PMID: 37799678 PMCID: PMC10549737 DOI: 10.1364/boe.497127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 10/07/2023]
Abstract
To enable non-destructive metabolic characterizations on in vitro cancer cells and organotypic tumor models for therapeutic studies in an easy-to-access way, we report a highly portable optical spectroscopic assay for simultaneous measurement of glucose uptake and mitochondrial function on various cancer models with high sensitivity. Well-established breast cancer cell lines (MCF-7 and MDA-MB-231) were used to validate the optical spectroscopic assay for metabolic characterizations, while fresh tumor samples harvested from both animals and human cancer patients were used to test the feasibility of our optical metabolic assay for non-destructive measurement of key metabolic parameters on organotypic tumor slices. Our optical metabolic assay captured that MCF-7 cells had higher mitochondrial metabolism, but lower glucose uptake compared to the MDA-MB-231 cells, which is consistent with our microscopy imaging and flow cytometry data, as well as the published Seahorse Assay data. Moreover, we demonstrated that our optical assay could non-destructively measure both glucose uptake and mitochondrial metabolism on the same cancer cell samples at one time, which remains challenging by existing metabolic tools. Our pilot tests on thin fresh tumor slices showed that our optical assay captured increased metabolic activities in tumors compared to normal tissues. Our non-destructive optical metabolic assay provides a cost-effective way for future longitudinal therapeutic studies using patient-derived organotypic fresh tumor slices through the lens of tumor energetics, which will significantly advance translational cancer research.
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Affiliation(s)
- Jing Yan
- Department of Biomedical Engineering,
University of Kentucky, Lexington, KY 40506, USA
| | | | - Madison O. Korfhage
- Department of Biomedical Engineering,
University of Kentucky, Lexington, KY 40506, USA
| | - Md Zahid Hasan
- Department of Biomedical Engineering,
University of Kentucky, Lexington, KY 40506, USA
| | - Teresa W.-M. Fan
- Center for Environmental and Systems Biochemistry, University of Kentucky, Lexington, KY 40536, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536, USA
| | - Xiaoqin Wang
- Department of Radiology, University of Kentucky, Lexington, KY 40536, USA
| | - Caigang Zhu
- Department of Biomedical Engineering,
University of Kentucky, Lexington, KY 40506, USA
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