XAP044 是高效的选择性mGlu7拮抗剂。代谢型谷氨酸受体亚型 7 是哺乳动物 CNS 中神经传递的重要突触前调节剂。它在啮齿动物行为测试中表现出较好的大脑暴露、广谱抗应激、抗抑郁以及抗焦虑作用。

XAP044 is a mGlu7-selective antagonist which inhibits lateral amygdala long term potentiation (LTP) in brain slices from wild type mice with a half-maximal blockade at 88 nm[1].

Previous study showed that in contrast to all previous mGlu7-selective drugs, XAP044 did not act through the seven-transmembrane region but rather via a binding pocket localized in mGlu7's extracellular Venus flytrap domain, a region identified for orthosteric agonist binding, which was suggested by the chimeric receptor studies in recombinant cell line assays [1].

In rodent behavioral paradigms, XAP044 demonstrated good brain exposure and wide spectrum anti-stress and antidepressant- and anxiolytic-like efficacy. In addition, XAP044 could reduce freezing during acquisition of Pavlovian fear and innate anxiety, which was consistent with the phenotypes of mGlu7-deficient mice. Moreover, XAP044 was able to inhibit lateral amygdala long term potentiation (LTP) in brain slices from wild type mice with a half-maximal blockade at 88 nm. It was alos found that there was no effect of XAP044 on LTP of mGlu7-deficient mice, suggesting that such pharmacological effect was mGlu7-dependent [1].

196928-50-4

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