白色固体。
用途DAPT 可促进人类舌癌细胞的凋亡并调节自噬。
生物活性DAPT (GSI-IX, LY-374973) 是一种新型γ-secretase抑制剂,能够抑制Aβ产生,在HEK 293细胞中的IC50值为20 nM。
Target | Value |
---|---|
γ secretase(Aβ) (HEK 293 cells) | 20 nM |
DAPT 功能性抑制γ-分泌酶,从而在HEK 293细胞中降低全部Aβ的产量,IC50值为20 nM。它作用于原代培养的人神经细胞时也抑制Aβ的产生,对全长Aβ和Aβ42的IC50值分别为115 nM 和200 nM,比在HEK 293细胞中的效果低约5-10倍。最新研究显示DAPT 抑制SK-MES-1 细胞增殖,这种作用呈浓度依赖性,IC50为11.265 μM。此外,DAPT 还能作用于肺鳞状细胞癌细胞,并通过抑制Notch受体信号通路诱导依赖性和非依赖性的细胞凋亡。
体内研究按100 mg/kg剂量处理PDAPP小鼠后,DAPT 在脑中的水平在1小时内超过100 ng/g,并在接下来的18小时内持续上升。3小时后达到最高水平490 ng/g。这种处理方式也降低了大脑皮层中全部Aβ和Aβ42的含量,作用呈剂量依赖性,减少50%。DAPT按40 mg/kg剂量作用于大鼠大脑皮层时,能够抑制LPS诱导的γ分泌酶活性,并提高携带长期神经炎症细胞的凋亡率。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-(L-alanyl)-L-phenylglycine tert-butyl ester | 327052-53-9 | C15H22N2O3 | 278.351 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(2S)-N-[(3,5-二氟苯基)乙酰基]-L-丙氨酰基-2-苯基-甘氨酸 | (2S)-({N-[(3,5-difluorophenyl)acetyl]-L-alanyl}amino)(phenyl)acetic acid | 263162-50-1 | C19H18F2N2O4 | 376.36 |
—— | DAP-BpB | —— | C52H63F2N7O6S | 952.178 |
We report the synthesis of two series of compounds with 3,5-difluoromandelyl-alanyl or 3,5-difluorophenylacetyl-alanyl backbones coupled to various heterocyclic or peptidic moieties. These two series of compounds were evaluated for their inhibitory properties on β-secretase (BACE-1) enzymatic assay, a target enzyme for Alzheimer’s disease (AD) pathology. We found that both diastereomers obtained from the racemic mixture 7 of the coumarin derivative bearing a mandelyl moiety were the most potent BACE-1 inhibitors studied in this work (IC50 = 1 × 10−6 M). Analysis of the obtained results led to the hypothesis that introduction of a difluoromandelyl residue in place of a difluorophenylacetyl moiety may induce β-secretase inhibitory activity.