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生物活性：SPP-86 是一种选择性的 RET 酪氨酸激酶的有效抑制剂，其 IC₅₀ 值为 8 nM。SPP-86 抑制 MCF7 细胞中 RET 诱导激活的 PI3K/Akt 和 MAPK 信号通路，也能抑制 RET 诱导的 ERα 磷酸化。

SPP-86 is a potent and selective cell permeable inhibitor of RET tyrosine kinase, with an IC₅₀ of 8 nM. SPP-86 inhibits RET-induced phosphatidylinositide 3-kinases (PI3K)/Akt and MAPK signaling, also inhibits RET-induced estrogen receptorα (ERα) phosphorylation in MCF7 cells^[1]. SPP-86 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.