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A Field-Independent Method for the Rapid Generation of Hyperpolarized [1- 13 C]Pyruvate in Clean Water Solutions for Biomedical Applications.

Salvatore MamoneAnil P JagtapSergey KorchakYonghong DingSonja SternkopfSergey Korchak
Published in: Angewandte Chemie (International ed. in English) (2022)
Hyperpolarization methods in magnetic resonance enhance the signals by several orders of magnitude, opening new windows for real-time investigations of dynamic processes in vitro and in vivo. Here, we propose a field-independent para-hydrogen-based pulsed method to produce rapidly hyperpolarized 13 C-labeled substrates. We demonstrate the method by polarizing the carboxylic carbon of the pyruvate moiety in a purposely designed precursor to 24 % at ≈22 mT. Following a fast purification procedure, we measure 8 % polarization on free [1- 13 C]pyruvate in clean water solutions at physiological conditions at 7 T. The enhanced signals allow real-time monitoring of the pyruvate-lactate conversion in cancer cells, demonstrating the potential of the method for biomedical applications in combination with existing or developing magnetic resonance technologies.
Keyphrases
  • magnetic resonance
  • contrast enhanced
  • risk assessment