McBride Stephen J, Pike Megan, Curran Erica, Zavriyev Alexander, Adebesin Bukola, Tucker Luke, Harzan Jared M, Senanayake Ishani M, Shen Sheng, Abdulmojeed Mustapha, Theiss Franziska, Boele Thomas, Gade Terence P, Duckett Simon, Goodson Boyd M, Rosen Matthew S, Chekmenev Eduard Y, Yuan Hong, Dedesma Carlos, Kadlecek Stephen, Theis Thomas, TomHon Patrick
North Carolina State University, Department of Chemistry, UNITED STATES OF AMERICA.
North Carolina State University, Department of Chemistry, North Carolina, UNITED STATES OF AMERICA.
Angew Chem Int Ed Engl. 2025 Apr 23:e202501231. doi: 10.1002/anie.202501231.
Hyperpolarized (HP) MRI using [1-13C]pyruvate is emerging as a promising molecular imaging approach. Among hyperpolarization methods, Signal Amplification By Reversible Exchange (SABRE) is attractive because SABRE polarizes the substrates directly in room-temperature solutions avoiding complex hardware. Most SABRE experiments have historically been performed in methanol, a relatively toxic and difficult to remove solvent. Here we demonstrate the use of a 80/20 acetone-water-solvent system (Ace-SABRE) to provide hyperpolarized [1-13C]pyruvate with up to 17% polarization, then implement a solvent processing protocol to achieve injectable solutions retaining 74% of the initial polarization, and lastly we demonstrate HP in vivo spectroscopy and imaging using the Ace-SABRE platform to showcase metabolic tracking in a hepatocellular carcinoma (HCC) tumor as well as HP-MRI, both in direct comparison to dissolution dynamic nuclear polarization (d-DNP) experiments. The Ace-SABRE technique promises faster adoption of SABRE hyperpolarization in biological experiments, overall lowering the barriers to entry for HP-NMR and HP-MRI.
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