Synthesis and antitumor activity of novel aroylthiourea derivatives of podophyllotoxin
作者:Yu Zhao、Chengniu Wang、Zhonghua Wu、Jinghuai Fang、Li Zhu
DOI:10.1007/s10637-010-9508-1
日期:2012.2
A novel series of 4β-[(4-substituted) aroylthiourea] derivatives of podophyllotoxin were synthesized and their abilities to inhibit the growth of cancer cells were investigated by MTT assay. Compound 4a possessed the highest cytotoxicity on HepG2, A549 and HCT-116 cancer cell lines with the IC50 values of 0.1 μM. Apoptosis in HCT-116 cells induced by compound 4a was observed by Hoechst33342-Propidium iodide (PI) and acridine orange (AO)-ethidium bromide (EB) double staining assays. DNA flow cytometric analysis revealed that 4a induced cell cycle arrest at G2/M phase and kDNA decatenation assay indicated that 4a inhibited topoisomerase IIα-mediated kDNA decatenation. Our results indicated that compound 4a possessed promising antitumor activity, which need to be studied further.
研究人员合成了一系列新型的4β-[(4-取代)芳基硫脲]荚叶肿毒素衍生物,并通过MTT试验研究了它们抑制癌细胞生长的能力。化合物 4a 对 HepG2、A549 和 HCT-116 癌细胞株具有最高的细胞毒性,IC50 值为 0.1 μM。化合物 4a 诱导的 HCT-116 细胞凋亡可通过 Hoechst33342-碘化丙啶(PI)和吖啶橙(AO)-溴化乙锭(EB)双重染色法进行观察。DNA 流式细胞分析表明,4a 能诱导细胞周期停滞在 G2/M 期,而 kDNA decatenation 分析表明,4a 能抑制拓扑异构酶 IIα 介导的 kDNA decatenation。我们的研究结果表明,化合物 4a 具有良好的抗肿瘤活性,有待进一步研究。