Publications [#359459] of Warren S. Warren

Journal Articles

  1. Park, H; Zhang, G; Bae, J; Theis, T; Warren, WS; Wang, Q, "Application of 15N2-Diazirines as a Versatile Platform for Hyperpolarization of Biological Molecules by d-DNP.", Bioconjugate chemistryMarch,, 2020, 31(3), 537-541 [doi].
    (last updated on 2024/04/23)

    Abstract:
    15N2-Diazirines represent an attractive class of imaging tags for hyperpolarized magnetic resonance imaging (HP-MRI), offering desirable biocompatibility, ease of incorporation into a variety of molecules, and ability to deliver long-lasting polarization. We have recently established hyperpolarization of 15N2-diazirines in organic solvents using SABRE-Shield Enables Alignment Transfer to Heteronuclei (SABRE-SHEATH). Yet, the current challenge of SABRE-SHEATH in water, specifically poor polarization efficiency, presents a barrier in examining the practical use of 15N2-diazirines for HP-MRI. Herein, we show that efficient polarization of diverse 15N2-diazirine-labeled molecules in water can be readily achieved by dissolution dynamic nuclear polarization (d-DNP), a hyperpolarization technique used in clinical practice. Hyperpolarization by d-DNP also demonstrates greater enhancement for long-lasting 15N signals, in comparison with SABRE-SHEATH. Various biologically important molecules are studied in this work, including amino acid, sugar, and drug compounds, demonstrating the great potential of 15N2-diazirines as molecular tags in broad biomedical and clinical applications.