Q1 · CROSS-FIELD
Article
Author: Barnaeva, E. ; Zhou, Y. ; Hu, X. ; Southall, N. ; Toth, K. ; Marugan, J. J. ; Barak, L. S. ; Wetsel, W. C. ; Caron, M. G. ; Wang, A. ; Gross, J. D. ; Clark, N. B. ; Xu, X. ; Ferrer, M. ; Slosky, L. M. ; Jansen, D. ; Kim, D. W. ; Ray, C. R.
SignificanceThe modulation of growth hormone secretagogue receptor-1a (GHSR1a) signaling is a promising strategy for treating brain conditions of metabolism, aging, and addiction. GHSR1a activation results in pleiotropic physiological outcomes through distinct and pharmacologically separable G protein- and β-arrestin (βarr)-dependent signaling pathways. Thus, pathway-selective modulation can enable improved pharmacotherapeutics that can promote therapeutic efficacy while mitigating side effects. Here, we describe the discovery of a brain-penetrant small molecule, N8279 (NCATS-SM8864), that biases GHSR1a conformations toward Gαq activation and reduces aberrant dopaminergic behavior in mice. N8279 represents a promising chemical scaffold to advance the development of better treatments for GHSR1a-related brain disorders involving the pathological dysregulation of dopamine.