| 应用 |
A γ-secretase blocker of Aβ42, Aβ40 and Aβ38 |
| 产品介绍 |
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。 |
| 备注 |
Semagacestat (LY450139) is a γ-secretase blocker for Aβ42, Aβ40 and Aβ38 with IC50 of 10.9 nM, 12.1 nM and 12.0 nM, also inhibits Notch signaling with IC50 of 14.1 nM. Phase 3. |
| 生化机理 |
Semagacestat is an inhibitor of the γ-secretase complex. It causes a reduction in the secretion of Aβ42, Aβ40 and Aβ38 from H4 human glioma cells stably overexpressing human wild-type APP into the culture medium. Semagacestat increases β-CTF in cell lysates, and the increase can be 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. |
| 别名 |
司马西特; (2S)-2-羟基-3-甲基-N-[(1S)-1-甲基-2-氧代-2-[[(1S)-2,3,4,5-四氢-3-甲基-2-氧代-1H-3-苯并氮杂卓-1-基]氨基]乙基]丁酰胺;LY450139;LY-450139;LY 450139;(2S)-2-Hydroxy-3-methyl-N-[(1S)-1-methyl-2-oxo-2-[[(1S)-2,3,4,5-tetrahydro-3-methyl-2-oxo-1H-3-benzazepin-1-yl]amino]ethyl]butanamide |
