Structure-activity relationship study of pyridazine derivatives as glutamate transporter EAAT2 activators.

Structure-activity relationship study of pyridazine derivatives as glutamate transporter EAAT2 activators.
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DOI:
10.1016/j.bmcl.2011.08.009
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发表时间:
2011-10-01
影响因子:
2.7
通讯作者:
Cuny, Gregory D.
Cuny, Gregory D.
中科院分区:
医学4区
文献类型:
--
作者:
Xing, Xuechao;Chang, Ling-Chu;Kong, Qiongman;Colton, Craig K.;Lai, Liching;Glicksman, Marcie A.;Lin, Chien-Liang Glenn;Cuny, Gregory D.

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兴奋性氨基酸转运体2(EAAT2)是谷氨酸的主要转运体,具有清除突触中谷氨酸的功能。已发现一种噻嗪衍生物可增加星形胶质细胞中EAAT2蛋白的水平。结构-活性关系研究表明,该分子的几个成分是活性所必需的,如硫醚和哒嗪。对苯硫醚进行修饰得到了几个衍生物(7-13,7-15和7-17),它们在24小时后在浓度为5μM的情况下使EAT2水平增加了6倍。此外,其中一个衍生物(7-22)在24小时后使EAT2水平提高了3.5-3.9倍,EC50值为0.5μM。
Excitatory amino acid transporter 2 (EAAT2) is the major glutamate transporter and functions to remove glutamate from synapses. A thiopyridazine derivative has been found to increase EAAT2 protein levels in astrocytes. A structure-activity relationship study revealed that several components of the molecule were required for activity, such as the thioether and pyridazine. Modification of the benzylthioether resulted in several derivatives (7–13, 7–15 and 7–17) that enhanced EAAT2 levels by > 6 fold at concentrations < 5 μM after 24 h. In addition, one of the derivatives (7–22) enhanced EAAT2 levels 3.5 – 3.9 fold after 24 h with an EC50 of 0.5 μM.
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