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Abstract #3429

Validation of Hyperpolarized 13C Lactate as a Prostate Cancer Biomarker Using a Human Prostate Tissue Slice Culture Bioreactor

Kayvan R. Keshari1, Renuka Sriram1, Mark Van Criekinge1, David M. Wilson1, Zhen J. Wang1, Daniel B. Vigneron1, Donna M. Peehl2, John Kurhanewicz1

1Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States; 2Stanford University, Stanford, CA, United States

The treatment of prostate cancer has been impeded by both the lack of clinically relevant disease models and biomarkers that track tumor progression. Hyperpolarized 13C MR has been developed to address these concerns, and safety of 13C pyruvate was confirmed in a recent clinical trial. The present study provides the first validation of HP lactate as a prostate cancer biomarker in human tissues, critical for the interpretation of in vivo studies. A prostate tissue slice culture model that recapitulates the metabolic profile of prostate cancer in vivo was developed, applied to a perfused cell (bioreactor) platform.

Keywords

acid activity addresses aggressiveness applied architecture assayed benign biomedical biopsies cancer cell cells choline citrate clinical clinically companion compatible concentration concentrations conducted continuous contrast corp correlates culture cultured cultures decreases demonstrating derive derived described developed development disease dramatically emerged enrichment evidence exhibit expression extended facilitate flow flux fold foster fractional frozen future glucose glut glutamate guided histology hours human identification immortal impeded in vivo included incubated incubator injected injection instruments integrated investigate issues john labs lactate literature malignant markers mechanistic media median medium metabolic metabolism metabolites model modified necessary nelson novel oxford patient perfused polarization positive post preservation pressing previously primary probes processed produce profile progression proliferation prostate providing purchased radical radiology rapidly recapitulates recent relevant reprogramming rotator safety secs selection significantly situation slice slices snap software specimens spectra spectroscopy stability stable steady structure studies supplemented system taken therapeutics tissue tissues track translatable transporters treatment trial tumor unlabeled untreated utilized utilizing validation years