A series of O2-glycosylated diazeniumdiolate-based derivatives of oleanolic acid (4–19) were synthesized and their anti-human hepatocellular carcinoma (HCC) activities were evaluated. Compound 6 selectively inhibited HCC, but not non-tumor liver cell proliferation. This inhibition was attributed to high levels of nitric oxide (NO) released in HCC cells. Importantly, 6 exhibited low acute toxicity (LD50 = 173.3 mg kg−1) and potent inhibition of HCC tumor growth in mice (3 mg kg−1 iv). Furthermore, 6 induced HCC cell apoptosis, which was accompanied by lower mitochondrial membrane potentials and Bcl2 expression, but with higher cytochrome C release, Bax, caspase 3 and 9 expression activities in HCC cells. Collectively, 6 may be a promising candidate drug for the intervention of HCC.
研究人员合成了一系列基于
齐墩果酸的 O2-糖基化重氮二醇酯衍
生物(4-19),并评估了它们的抗人类肝细胞癌(HCC)活性。化合物 6 能选择性地抑制 HCC,但不能抑制非肿瘤肝细胞的增殖。这种抑制作用归因于 HCC 细胞释放的高
水平
一氧化氮(NO)。重要的是,6 号化合物表现出较低的急性毒性(LD50 = 173.3 mg kg-1),并能有效抑制小鼠 HCC 肿瘤的生长(3 mg kg-1 iv)。此外,6 还能诱导 HCC 细胞凋亡,其线粒体膜电位和 Bcl2 表达较低,但
细胞色素 C 释放、Bax、caspase 3 和 9 表达活性较高。总之,6号可能是一种很有前景的干预HCC的候选药物。