A cell-permeable piperazinyl-quinazoline compound that acts as a downstream Hh (Hedgehog) pathway blocker, effectively inhibiting Gli-dependent transcription activity in both Sufu+/+ NIH 3T3 (shh-LIGHT2) and Sufu-/- fibroblast cultures (IC₅₀ = 3 & 9 µM, respectively) in a manner similar to two other Hh downstream blockers, HPI-1 (Cat. No. 373275) and GANT-61 (Cat. No. 373401). However, unlike HPI-1, HPI-3′s inhibitory activity against Su(fu)-/- fibroblasts is completely abolished by Gli1 or Gli2 overexpression. While both HPI-1 and HPI-3 are shown to inhibit the ligand-independent Hh pathway activation in SmoM2-expressing NIH 3T3 cultures (IC₅₀ = 2.5 & 1 µM, respectively), only HPI-1, but not HPI-3, is able to effectively suppress the SmoM2-induced Hh pathway activation in primary murine CGNPs (Cerebellar Granule Neuron Precursors) cultures.，官网链接：https://www.sigmaaldrich.cn/product/mm/373276 默克 科研、开发、生产。 作为生命科学行业的全球领先供应商，我们致力于为科研、生物技术开发和生产，以及制药药物疗法开发和生产提供各类解决方案和服务。

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