cn0c00009_si_001.pdf (2.98 MB)
Development of Clickable Photoaffinity Ligands for Metabotropic Glutamate Receptor 2 Based on Two Positive Allosteric Modulator Chemotypes
journal contribution
posted on 2020-05-22, 21:29 authored by Shane
D. Hellyer, Shaili Aggarwal, Amy N. Y. Chen, Katie Leach, David J. Lapinsky, Karen J. GregoryThe
metabotropic glutamate receptor 2 (mGlu2) is a transmembrane-spanning
class C G protein-coupled receptor that is an attractive therapeutic
target for multiple psychiatric and neurological disorders. A key
challenge has been deciphering the contribution of mGlu2 relative to other closely related mGlu receptors in mediating different
physiological responses, which could be achieved through the utilization
of subtype selective pharmacological tools. In this respect, allosteric
modulators that recognize ligand-binding sites distinct from the endogenous
neurotransmitter glutamate offer the promise of higher receptor-subtype
selectivity. We hypothesized that mGlu2-selective positive
allosteric modulators could be derivatized to generate bifunctional
pharmacological tools. Here we developed clickable photoaffinity probes
for mGlu2 based on two different positive allosteric modulator
scaffolds that retained similar pharmacological activity to parent
compounds. We demonstrate successful probe-dependent incorporation
of a commercially available clickable fluorophore using bioorthogonal
conjugation. Importantly, we also show the limitations of using these
probes to assess in situ fluorescence of mGlu2 in intact cells where significant nonspecific membrane binding
is evident.
History
Usage metrics
Categories
Keywords
allosteric modulator scaffoldsmetabotropic glutamate receptor 2allosteric modulatorsPositive Allosteric Modulator Chemotypesneurotransmitter glutamate offerClickable Photoaffinity Ligandstransmembrane-spanning class C G protein-coupled receptorMetabotropic Glutamate Receptor 2mGlu 2clickable photoaffinity probes
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC