Enantiomers of 2'-fluoralkyl-6-nitroquipazine as serotonin transporter positron emission tomography imaging agents and antidepressant therapeutics
申请人:Gerdes M. John
公开号:US20080058344A1
公开(公告)日:2008-03-06
Racemic mixtures and individual enantiomers of fluorine-18 or carbon-11 radio-labelled 2′-alkyl-6-nitroquipazine ligands are serotonin transporter (SERT) tracers for positron emission tomography (PET) imaging. The non-radioactive ligand forms possess therapeutic antidepressant in vitro and in vivo pharmacological binding profiles in rodent brain and cells expressing human serotonin transporter (hSERT). Twelve 2′-alkyl-6-nitroquipazine ligands potently bind in sub-nanomolar concentrations to the pre-synaptic SERT binding site where established antidepressant drugs bind and inhibit the re-uptake of the neurotransmitter serotonin (5-HT). In vivo tracer studies in rats as well as monkey PET scan trial have demonstrated the fluorine-18 and carbon-11 positron radionuclide labeled tracers perform as quantitative tracers of specific binding the SERT protein in live brain.
Enantiomers of 2'-Fluoralkyl-6-nitroquipazine as Serotonin Transporter Positron Emission Tomography Imaging Agents and Antidepressant Therapeutics
申请人:Gerdes John M.
公开号:US20110009419A1
公开(公告)日:2011-01-13
Racemic mixtures and individual enantiomers of fluorine-18 or carbon-11 radiolabelled 2′-alkyl-6-nitroquipazine ligands are serotonin transporter (SERT) tracers for positron emission tomography (PET) imaging. The non-radioactive ligand forms possess therapeutic antidepressant in vitro and in vivo pharmacological binding profiles in rodent brain and cells expressing human serotonin transporter (hSERT). Twelve 2′-alkyl-6-nitroquipazine ligands potently bind in sub-nanomolar concentrations to the pre-synaptic SERT binding site where established antidepressant drugs bind and inhibit the re-uptake of the neurotransmitter serotonin (5-HT). In vivo tracer studies in rats as well as monkey PET scan trial have demonstrated the fluorine-18 and carbon-11 positron radionuclide labeled tracers perform as quantitative tracers of specific binding the SERT protein in live brain.
[EN] ENANTIOMERS OF 2'-FLUORALKYL-6-NITROQUIPAZINE AS SEROTONIN TRANSPORTER POSITRON EMISSION TOMOGRAPHY IMAGING AGENTS AND ANTIDEPRESSANT THERAPEUTICS<br/>[FR] ÉNANTIOMÈRES DE 2'-FLUORALKYL-6-NITROQUIPAZINE EN TANT QU'AGENTS D'IMAGERIE PAR TOMOGRAPHIE À ÉMISSION DE POSITRONS DES TRANSPORTEURS DE LA SÉROTONINE ET AGENTS THÉRAPEUTIQUES ANTIDÉPRESSEURS
申请人:UNIV MONTANA
公开号:WO2007127262A2
公开(公告)日:2007-11-08
[EN] Racemic mixtures and individual enantiomers of fluorine-18 or carbon-11 radiolabeled 2'-alkyl-6-nitroquipazine ligands are serotonin transporter (SERT) tracers for positron emission tomography (PET) imaging. The non-radioactive ligand forms possess therapeutic antidepressant in vitro and in vivo pharmacological binding profiles in rodent brain and cells expressing human serotonin transporter (hSERT). Twelve 2'-alkyl-6-nitroquipazine ligands potently bind in sub-nanomolar concentrations to the pre-synaptic SERT binding site where established antidepressant drugs bind and inhibit the re-uptake of the neurotransmitter serotonin (5-HT). In vivo tracer studies in rats as well as monkey PET scan trial have demonstrated the fluorine-18 and carbon-11 positron radionuclide labeled tracers perform as quantitative tracers of specific binding the SERT protein in live brain. [FR] Selon l'invention, des mélanges racémiques et des énantiomères individuels de ligands 2'-alkyl-6-nitroquipazine radiomarqués au fluor 18 ou au carbone 11 sont des traceurs des transporteurs de la sérotonine (SERT) pour l'imagerie par tomographie à émission de positrons (TEP). Ces formes de ligands non radioactifs possèdent un effet antidépresseur thérapeutique et des profils de liaison pharmacologique in vitro et in vivo dans le cerveau des rongeurs et des cellules exprimant le transporteur de la sérotonine humaine (hSERT). Douze ligands 2'-alkyl-6-nitroquipazine se lient puissamment à des concentrations subnanomolaires au site de liaison au SERT présynaptique auquel les médicaments antidépresseurs établis se lient et inhibent la réabsorption de la sérotonine neurotransmettrice (5-HT). Des études de traceurs in vivo chez le rat ainsi qu'un essai d'exploration TEP chez le singe ont démontré que les traceurs marqués avec les radionucléides émetteurs de positrons que sont le fluor 18 et le carbone 11 fonctionnent comme des traceurs quantitatifs de la liaison spécifique de la protéine SERT dans le cerveau vivant.