Chiral resolution of serial potent and selective σ1 ligands and biological evaluation of (-)-[18F]TZ3108 in rodent and the nonhuman primate brain.
Chiral resolution of serial potent and selective σ1 ligands and biological evaluation of (-)-[18F]TZ3108 in rodent and the nonhuman primate brain.
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啮齿类动物和非人类灵长类动物脑中连续有效和选择性 α1 配体的手性拆分以及 (-)-[18F]TZ3108 的生物学评估。
DOI:
10.1016/j.bmc.2017.01.017
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发表时间:
2017
影响因子:
3.5
通讯作者:
Tu,Zhude
中科院分区:
文献类型:
--
作者:
Yue,Xuyi;Jin,Hongjun;Luo,Zonghua;Liu,Hui;Zhang,Xiang;McSpadden,EthanD;Tian,Linlin;Flores,HubertP;Perlmutter,JoelS;Parsons,StanleyM;Tu,Zhude
Twelve optically pure enantiomers were obtained using either crystallization or chiral high performance liquid chromatography (HPLC) separation methodologies to resolve six racemic sigma-1 (σ1) receptor ligands. Thein vitrobinding affinities of each enantiomer forσ1,σ2receptors and vesicular acetylcholine transporter (VAChT) were determined. Out of the 12 optically pure enantiomers, five displayed very high affinities forσ1(Ki< 2 nM) and high selectivity forσ1versusσ2and VAChT (>100-fold). The minus enantiomer, (−)-14a((−)-TZ3108) (Ki-σ1= 1.8 ± 0.4 nM, Ki-σ2= 6960 ± 810 nM, Ki-VAChT= 980 ± 87 nM), was chosen for radiolabeling and furtherin vivoevaluation in rodents and nonhuman primates (NHPs). A biodistribution study in Sprague Dawley rats showed brain uptake (%ID/gram) of (−)-[18F]TZ3108reached 1.285 ± 0.062 at 5 min and 0.802 ± 0.129 at 120 min. NHP microPET imaging studies revealed higher brain uptake of (−)-[18F]TZ3108and more favorable pharmacokinetics compared to its racemic counterpart. Pretreatment of the animal using two structurally differentσ1ligands significantly decreased accumulation of (−)-[18F]TZ3108in the brain. Together, ourin vivoevaluation results suggest that (−)-[18F]TZ3108is a promising positron emission tomography (PET) tracer for quantifyingσ1receptor in the brain.
DOI:
--
发表时间:
1948
期刊:
The Proceedings of the Institute of Medicine of Chicago
影响因子:
--
作者:
P. Bailey
通讯作者:
P. Bailey
影响因子:
1.9
作者:
A. Hawkes;G. Adelman;S. G. Dennis;F. O. Schmitt;F. Warden
通讯作者:
F. Warden