A kinome-wide selective radiolabeled TrkB/C inhibitor for in vitro and in vivo neuroimaging

• Verfasst von: Bernard-Gauthier, Vadim [VerfasserIn]
• Verfasst von: Mahringer, Anne [VerfasserIn]
• Verfasst von: Fricker, Gert [VerfasserIn]
• Verfasst von: Wängler, Björn [VerfasserIn]
• Titel: A kinome-wide selective radiolabeled TrkB/C inhibitor for in vitro and in vivo neuroimaging
• Titelzusatz: synthesis, preclinical evaluation, and first-in-human
• Mitwirkende: soucy, jean-paul
• Verf.angabe: Vadim Bernard-Gauthier, Justin J. Bailey, Andrew V. Mossine, Simon Lindner, Lena Vomacka, Arturo Aliaga, Xia Shao, Carole A. Quesada, Phillip Sherman, Anne Mahringer, Alexey Kostikov, Marilyn Grand’Maison, Pedro Rosa-Neto, Jean-Paul Soucy, Alexander Thiel, David R. Kaplan, Gert Fricker, Björn Wängler, Peter Bartenstein, Ralf Schirrmacher, and Peter J.H. Scott
• Jahr: 2017
• Umfang: 14 S.
• Fussnoten: Publication Date (Web): July 11, 2017 ; Gesehen am 28.06.2018
• Titel Quelle: Enthalten in: Journal of medicinal chemistry
• Ort Quelle: Washington, DC : ACS, 1959
• Jahr Quelle: 2017
• Band/Heft Quelle: 60(2017), 16, Seite 6897-6910
• ISSN Quelle: 1520-4804
• DOI: doi:10.1021/acs.jmedchem.7b00396
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1577018664

Abstract

The proto-oncogenes NTRK1/2/3 encode the tropomyosin receptor kinases TrkA/B/C which play pivotal roles in neurobiology and cancer. We describe herein the discovery of [11C]-(R)-3 ([11C]-(R)-IPMICF16), a first-in-class positron emission tomography (PET) TrkB/C-targeting radiolabeled kinase inhibitor lead. Relying on extensive human kinome vetting, we show that (R)-3 is the most potent and most selective TrkB/C inhibitor characterized to date. It is demonstrated that [11C]-(R)-3 readily crosses the blood-brain barrier (BBB) in rodents and selectively binds to TrkB/C receptors in vivo, as evidenced by entrectinib blocking studies. Substantial TrkB/C-specific binding in human brain tissue is observed in vitro, with specific reduction in the hippocampus of Alzheimer’s disease (AD) versus healthy brains. We additionally provide preliminary translational data regarding the brain disposition of [11C]-(R)-3 in primates including first-in-human assessment. These results illustrate for the first time the use of a kinome-wide selective radioactive chemical probe for endogenous kinase PET neuroimaging in human.