Synthesis, physicochemical and biological evaluation of tacrine derivative labeled with technetium-99m and gallium-68 as a prospective diagnostic tool for early diagnosis of Alzheimer’s disease
作者:Ewa Gniazdowska、Przemysław Koźmiński、Paweł Halik、Marek Bajda、Kamila Czarnecka、Elżbieta Mikiciuk-Olasik、Katarzyna Masłowska、Zbigniew Rogulski、Łukasz Cheda、Krzysztof Kilian、Paweł Szymański
DOI:10.1016/j.bioorg.2019.103136
日期:2019.10
tacrine derivatives were performed. Novel tacrine analogues were labeled with technetium-99m and gallium-68. For all obtained radioconjugates ([99mTc]Tc-Hynic-(tricine)2NH(CH2)ntacrine and [68Ga]Ga-DOTA-NH(CH2)9tacrine, where n = 2–9 denotes the number of methylene groups CH2) the studies of physicochemical properties (lipophilicity, stability in the presence of an excess of standard amino acids cysteine
在新合成的他克林衍生物的基础上,进行了用于早期诊断阿尔茨海默氏病的新型放射性结合物的设计,物理化学和生物学研究。新型他克林类似物用tech 99m和镓68标记。对于所有获得的放射性共轭物([ 99m Tc] Tc-Hynic-(tricine)2 NH(CH 2)n他克林和[ 68 Ga] Ga-DOTA-NH(CH 2)9他克林,其中n = 2–9表示数字的CH 2亚甲基)进行了理化性质(亲脂性,在过量标准氨基酸半胱氨酸或组氨酸存在下的稳定性,人血清和脑脊液中)的研究。对于两个选定的放射性共轭物,[ 99m Tc] Tc-Hynic-(tricine)2 NH(CH 2)9 Tac和[ 68 Ga] Ga-DOTA-NH(CH 2)9他克林(具有最高的亲脂性值)已进行了生物学测试(抑制胆碱酯酶作用,分子对接和生物分布研究)。所有新的放射性结合物在所用生物溶液中均显示出高稳定性。两种选择