计算溶液所需的质量、体积或浓度。
| 活性类型 | 活性值-log(M) | 作用机制 | 期刊 | 参考文献(PubMed IDs) |
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Moligand™ 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
-80℃储存。特低温运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
Semagacestat (LY450139)是一种γ-分泌酶抑制剂,作用于Aβ42, Aβ40和Aβ38时,IC50分别为10.9 nM, 12.1 nM和12.0 nM,也抑制Notch信号通路,IC50为14.1 nM。A γ-secretase blocker of Aβ42, Aβ40 and Aβ38
Information
Semagacestat (LY450139) is a γ-secretase blocker forAβ42,Aβ40andAβ38withIC50of 10.9 nM, 12.1 nM and 12.0 nM, also inhibitsNotchsignaling withIC50of 14.1 nM in H4 human glioma cell. Phase 3.
In vitro
Semagacestat reduces the secretion of Aβ42, Aβ40 and Aβ38 from H4 human glioma cells stably overexpressing human wild-type APP into the culture medium, with IC50 of 10.9 nM, 12.1 nM and 12.0 nM, respectively, without affecting cell viability. Semagacestat also increases β-CTF in cell lysates with ECmax of 16.0 nM, and the increase can be unexpectedly attenuated at high concentrations. Semagacestat inhibits Notch signaling with IC50 of 14.1 nM, and shows minimal Notch-sparing selectivity with Notch IC50/Aβ42 IC50 only 1.3. Semagacestat causes a concentration-dependent decrease in Aβ40 secreted into the medium with IC50 of 111 nM from murine CTX expressing endogenous murine APP, but murine Aβ42 formation in CTX is roughly 12-fold less than Aβ40 in accordance with data for neurons from wild type mice.
In vivo
Oral administration of Semagacestat (1 mg/kg) to 5.5-month old APP-transgenic Tg2576 mice significantly ameliorates memory deficits on spatial working memory using the Y-maze task, which disappears after 8 days subchronic dosing. LY450139 decreases hippocampal levels of both Aβ42 and Aβ40 at 10 mg/kg (22-23% reduction) and 30 mg/kg (36-41% reduction) and increases β-CTF at 0.3-10 mg/kg in a dose dependent manner with no inhibition on the processing of other γ-secretase substrates, such as Notch, N-cadherin or EphA4, in the brain, but impairs normal cognition in wild-type mice and 3-month-old Tg2576 mice failing to restore cognitive deficits in the Y-maze test.
Cell Data
cell lines:
Concentrations:Dissolved in DMSO, final concentration ~10 μM
Incubation Time:24 hours
Powder Purity:≥97%
| ALogP | 1.3 |
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | S409198 |