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  4. Micromolar Concentration Affinity Study on a Benchtop NMR Spectrometer with Secondary <SUP>13</SUP>C Labeled Hyperpolarized Ligands
 
research article

Micromolar Concentration Affinity Study on a Benchtop NMR Spectrometer with Secondary 13C Labeled Hyperpolarized Ligands

Cala, Olivier
•
Bocquelet, Charlotte
•
Gioiosa, Chloe
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January 24, 2025
ACS Omega

Benchtop NMR is becoming an increasingly important tool, sometimes providing a simple and low-cost alternative to high-field NMR. The Achilles heel of NMR and even more critically of benchtop NMR is its limited sensitivity. However, when combined with hyperpolarization techniques, the sensitivity boost can provide excellent sensitivity that can even make benchtop NMR compatible with affinity studies for drug discovery. Hyperpolarization by dissolution dynamic nuclear polarization (dDNP) provides a route to enhancing 13C nuclear magnetic resonance (NMR) sensitivity by more than 5 orders of magnitude for a wide range of small molecules on a benchtop NMR system. We show here how ligands can be secondarily labeled with 13C tags and hyperpolarized with conventional dDNP methods. These hyperpolarized ligands display long nuclear spin-lattice relaxation time constants and can therefore be used to probe interactions with target proteins in conventional dDNP settings. The boost in sensitivity combined with the simplicity of the 13C spectra (one peak per ligand) enables detection on an 80 MHz benchtop NMR spectrometer at micromolar concentrations, which may ultimately provide a way of improving and accelerating the discovery of new drug candidates.

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Type
research article
DOI
10.1021/acsomega.4c05101
Web of Science ID

WOS:001406199300001

Author(s)
Cala, Olivier

Ecole Normale Superieure de Lyon (ENS de LYON)

Bocquelet, Charlotte

Ecole Normale Superieure de Lyon (ENS de LYON)

Gioiosa, Chloe

Ctr Rech Solaize

Torres, Felix

Swiss Federal Institutes of Technology Domain

Cousin, Samuel F.

Centre National de la Recherche Scientifique (CNRS)

Guibert, Sylvie

Ecole Normale Superieure de Lyon (ENS de LYON)

Ceillier, Morgan

Ecole Normale Superieure de Lyon (ENS de LYON)

Busse, Venita

Bruker Switzerland AG

Decker, Frank

Bruker Corporation

Kempf, James G.

Bruker Corporation

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Date Issued

2025-01-24

Publisher

AMER CHEMICAL SOC

Published in
ACS Omega
Subjects

DYNAMIC NUCLEAR-POLARIZATION

•

SELECTION

•

Science & Technology

•

Physical Sciences

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
ISIC-NMRP  
FunderFunding(s)Grant NumberGrant URL

Bruker BioSpin

ENS Lyon

Claude Bernard Lyon 1 University

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Available on Infoscience
February 6, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/246596
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