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• W4309160592 abstract "Despite great successes in oncology, patient outcomes are often still discouraging, and hence the diagnostic imaging paradigm is increasingly shifting toward functional imaging of the pathology to better understand individual disease biology and to personalize therapies. The dissolution Dynamic Nuclear Polarization (d-DNP) hyperpolarization method has enabled unprecedented real-time MRI sensing of metabolism and tissue pH using hyperpolarized [1-13C]pyruvate as a biosensor with great potential for diagnosis and monitoring of cancer patients. However, current d-DNP is expensive and suffers from long hyperpolarization times, posing a substantial translational roadblock. Here, we report the development of Re-Dissolution Signal Amplification By Reversible Exchange (Re-D SABRE), which relies on fast and low-cost hyperpolarization of [1-13C]pyruvate by chemical exchange with parahydrogen at microtesla magnetic fields. [1-13C]pyruvate is precipitated from catalyst-containing methanol using ethyl acetate and rapidly reconstituted in aqueous media. 13C polarization of 9 ± 1% is demonstrated after redissolution in water with residual iridium mass fraction of 8.5 ± 1.5 ppm; further improvement is anticipated via process automation. Re-D SABRE makes hyperpolarized [1-13C]pyruvate biosensor available at a fraction of the cost (<$10,000) and production time (≈1 min) of currently used techniques and makes aqueous hyperpolarized [1-13C]pyruvate ready for in vivo applications." @default.
• W4309160592 created "2022-11-24" @default.
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• W4309160592 date "2022-11-15" @default.
• W4309160592 modified "2023-10-14" @default.
• W4309160592 title "Catalyst-Free Aqueous Hyperpolarized [1-¹³C]Pyruvate Obtained by Re-Dissolution Signal Amplification by Reversible Exchange" @default.
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• W4309160592 doi "https://doi.org/10.1021/acssensors.2c01715" @default.
• W4309160592 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36379005" @default.
• W4309160592 hasPublicationYear "2022" @default.
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