Synthesis and biological evaluation of a novel betulinic acid derivative as an inducer of apoptosis in human colon carcinoma cells (HT-29)
作者:Biswajit Chakraborty、Debasmita Dutta、Sanjukta Mukherjee、Supriya Das、Nakul C. Maiti、Padma Das、Chinmay Chowdhury
DOI:10.1016/j.ejmech.2015.07.035
日期:2015.9
These were screened for their anticancer activity against different cancer cells and normal human PBMC by MTT assay. Compound 2c [(3S)-3-2-(4-(hydroxymethyl-1H-1,2,3-triazol-1-yl)acetyloxy}-lup-20(29)-en-28-oic acid] was found as the most potent inhibitor of cell line HT-29 with IC50 value 14.9 μM. Its role as an inducer of apoptosis was investigated in this cell line by Annexin-V/PI binding assay and
通过应用叠氮化物-炔烃“点击反应” ,合成了一个新的桦木酸类似物家族,其在C-3处带有通过连接基连接的三唑单元。通过MTT测定法筛选了它们对不同癌细胞和正常人PBMC的抗癌活性。化合物2c [(3 S)-3- 2-(4-(羟甲基-1 H -1,2,3-三唑-1-基)乙酰氧基} lup-20(29)-en-28-oic酸被发现是IC 50最有效的细胞株HT-29抑制剂值14.9μM。通过膜联蛋白-V / PI结合试验,并通过追踪其产生ROS,线粒体跨膜电位去极化,胱天蛋白酶激活,PARP裂解,核降解和pro-表达的能力,研究了其作为细胞凋亡诱导剂的作用。和抗凋亡蛋白。它显示出比标准药物5-氟尿嘧啶高得多的细胞毒性,但对正常PBMC的细胞毒性却可以忽略不计。ROS生成水平升高,caspase 3和caspase 9激活,DNA片段化,Bax和Bad的较高表达,Bcl2和Bcl-xl的较低表达以及Bax