Discovery of a Biased Allosteric Modulator for Cannabinoid 1 Receptor: Preclinical Anti-Glaucoma Efficacy ()

Sumanta Garai, Luciana M. Leo, Anna Maria Szczesniak, Dow P. Hurst, Peter C. Schaffer, Ayat Zagzoog, Tallan Black, Jeffrey R. Deschamps, Elke Miess, Stefan Schulz, David R. Janero, Alex Straiker, Roger G. Pertwee, Mary E. Abood, Melanie E.M. Kelly, Patricia H. Reggio, Robert B. Laprairie, Ganesh A. Thakur

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

26 Citas (Scopus)

Resumen

We apply the magic methyl effect to improve the potency/efficacy of GAT211, the prototypic 2-phenylindole-based cannabinoid type-1 receptor (CB1R) agonist-positive allosteric modulator (ago-PAM). Introducing a methyl group at the α-position of nitro group generated two diastereomers, the greater potency and efficacy oferythro, (±)-vsthreo, (±)-constitutes the first demonstration of diastereoselective CB1R-allosteric modulator interaction. Of the (±)-9enantiomers, (−)-(S,R)-13evidenced improved potency over GAT211 as a CB1R ago-PAM, whereas (+)-(R,S)-14was a CB1R allosteric agonist biased toward G protein- vs β-arrestin1/2-dependent signaling. (−)-(S,R)-13and (+)-(R,S)-14were devoid of undesirable side effects (triad test), and (+)-(R,S)-14reduced intraocular pressure with an unprecedentedly long duration of action in a murine glaucoma model. (−)-(S,R)-13docked into both a CB1R extracellular PAM and intracellular allosteric-agonist site(s), whereas (+)-(R,S)-14preferentially engaged only the latter. Exploiting G-protein biased CB1R-allosteric modulation can offer safer therapeutic candidates for glaucoma and, potentially, other diseases.

Idioma originalEnglish
Páginas (desde-hasta)8104-8126
Número de páginas23
PublicaciónJournal of Medicinal Chemistry
Volumen64
N.º12
DOI
EstadoPublished - jun. 24 2021

Nota bibliográfica

Funding Information:
This work was supported by EY024727 (to G.A.T., R.G.P., A.S., and M.E.M.K.), R01 DA045698, T32 DA007237, and P30 DA013429 (to M.E.A. and L.M.L), a partnership grant to RBL from GlaxoSmithKline and the Canadian Institutes of Health Research (CIHR) (201704), and a Project Grant to RBL (201909). T.B. and A.Z. are supported by research scholarships from the College of Pharmacy and Nutrition, University of Saskatchewan.

Publisher Copyright:
© 2021 American Chemical Society

ASJC Scopus Subject Areas

  • Molecular Medicine
  • Drug Discovery

PubMed: MeSH publication types

  • Journal Article
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

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