Naquotinib

MCE 国际站：Naquotinib

产品活性：Naquotinib (ASP8273) 是有口服活性，不可逆的 EGFR 突变体抑制剂；对EGFR突变体和EGFR的 IC₅₀ 值分别为8-33和230 nM。

研究领域：JAK/STAT Signaling | Protein Tyrosine Kinase/RTK

作用靶点：EGFR

In Vitro: In assays using endogenously EGFR-dependent cells, Naquotinib inhibits the growth of PC-9(del ex19), HCC827(del ex19), NCI-H1975(del ex19/T790M) and PC-9ER(del ex19/T790M) with IC₅₀s of 8-33 nM. Naquotinib selectively inhibits phosphorylation of EGFR and its down-stream signal pathway, ERK and Akt from 10nM in HCC827 and NCI-H1975 while inhibitory effects are only detected at 1000nM in A431.In NCI-H1650 (del ex19), Naquotinib inhibits cell growth with an IC₅₀ value of 70nM while other EGFR-TKIs are only partially effective.

In Vivo: Oral Naquotinib treatment dose dependently induces tumor regression in NCI-H1975 (L858R/T790M), HCC827 (del ex19) and PC-9 (del ex19) xenograft models. Dosing schedules does not affect the efficacy of Naquotinib. In an NCI-H1975 xenograft model, complete regression of tumor is achieved after 14-days of Naquotinib treatment. Complete regression is maintained in 50% of mice more than 85 days after cessation of Naquotinib treatment.

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