Late-stage deuteration of 13C-enriched substrates for: T 1 prolongation in hyperpolarized 13C MRI

  • Céline Taglang
  • , David E. Korenchan
  • , Cornelius Von Morze
  • , Justin Yu
  • , Chloé Najac
  • , Sinan Wang
  • , Joseph E. Blecha
  • , Sukumar Subramaniam
  • , Robert Bok
  • , Henry F. Vanbrocklin
  • , Daniel B. Vigneron
  • , Sabrina M. Ronen
  • , Renuka Sriram
  • , John Kurhanewicz
  • , David M. Wilson
  • , Robert R. Flavell

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A robust and selective late-stage deuteration methodology was applied to 13C-enriched amino and alpha hydroxy acids to increase spin-lattice relaxation constant T1 for hyperpolarized 13C magnetic resonance imaging. For the five substrates with 13C-labeling on the C1-position ([1-13C]alanine, [1-13C]serine, [1-13C]lactate, [1-13C]glycine, and [1-13C]valine), significant increase of their T1 was observed at 3 T with deuterium labeling (+26%, 22%, +16%, +25% and +29%, respectively). Remarkably, in the case of [2-13C]alanine, [2-13C]serine and [2-13C]lactate, deuterium labeling led to a greater than four fold increase in T1. [1-13C,2-2H]alanine, produced using this method, was applied to in vitro enzyme assays with alanine aminotransferase, demonstrating a kinetic isotope effect.

Original languageEnglish
Pages (from-to)5233-5236
Number of pages4
JournalChemical Communications
Volume54
Issue number41
DOIs
StatePublished - 2018

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