Antitumor efficacy and apoptotic activity of substituted chloroalkyl 1H-benz[de]isoquinoline-1,3-diones: a new class of potential antineoplastic agents
作者:Asama Mukherjee、Suva Hazra、Sushanta Dutta、Shanmugavel Muthiah、Dilip Manikrao Mondhe、Parduman Raj Sharma、Shashank Kumar Singh、Ajit Kumar Saxena、Gulam Nabi Qazi、Utpal Sanyal
DOI:10.1007/s10637-009-9372-z
日期:2011.6
A series of ten chloroalkyl 1H-benz[de]isoquinoline-1,3-diones (naphthalimides) were synthesized and evaluated for antitumor activity. Amongst them, new compounds 2d and 2i carrying a 6-NO2 substituent in the aromatic portion of the molecule possessed significant antineoplastic activity. The most active compound 2i had elicited significant cytotoxicity in 15 human tumor cell lines namely Leukemia: MOLT-4, HL-60; Lymphoma: U-937; Colon: 502713, HT-29, SW-620, HCT-15, COLO-205; Liver: Hep-2; Prostate DU-145, PC-3; Breast: MCF-7; Neuroblastoma: IMR-32, SK-N-SH and Ovary: OVCAR-5 out of the 17 cell lines screened. Flow cytometric analysis performed to study the effect of compound 2i on the progression of cell cycle of MOLT-4 cells, revealed rise in sub-G1 fraction and concomitant accumulation of cells in S and G2/M phases, indicating apoptosis, mitotic arrest and/or delay in exit of daughter cells from mitotic cycle respectively. It also induced caspase-mediated apoptosis of MOLT-4 cells in a dose dependant manner. Light and electron microscopic studies revealed characteristic morphology of apoptotic MOLT-4 cells after in vitro treatment with 10 μM concentration of the compound. Apoptosis induction was also observed in HL-60 cells by compounds 2d and 2i to an extent much greater than camptothecin and cis-platin at 10 μM concentration. Both the compounds have shown minimal suppressive effect on human PBMC having high IC50 values of 3,582 and 1,536 μM respectively. These compounds inhibited DNA and RNA synthesis in murine ascites Sarcoma-180 tumor cells in vitro at 8 μM concentration. Above results indicate promising chemotherapeutic potential of the key compound 2i.
研究人员合成了一系列十氯烷基 1H-苯并[de]异喹啉-1,3-二酮(萘二甲酰亚胺),并对其抗肿瘤活性进行了评估。其中,分子芳香部分带有 6-NO2 取代基的新化合物 2d 和 2i 具有显著的抗肿瘤活性。白血病:MOLT-4、HL-60;淋巴瘤:U-937;结肠癌:MOLT-4、HL-60:U-937;结肠癌502713, HT-29, SW-620, HCT-15, COLO-205; Liver:肝:Hep-2;前列腺癌:DU-145、PC-3;乳腺癌:MCF-7MCF-7;神经母细胞瘤:IMR-32、SK-N-SH 和卵巢:在筛选出的 17 种细胞系中,只有卵巢癌:OVCAR-5。为研究化合物 2i 对 MOLT-4 细胞周期进展的影响而进行的流式细胞仪分析表明,亚 G1 部分的细胞数增加,同时 S 期和 G2/M 期的细胞数增加,这分别表明细胞凋亡、有丝分裂停滞和/或子细胞延迟退出有丝分裂周期。它还以剂量依赖的方式诱导了 Caspase 介导的 MOLT-4 细胞凋亡。光镜和电子显微镜研究显示,体外处理 10 μM 浓度的化合物后,凋亡的 MOLT-4 细胞形态特征明显。在 10 μM 浓度下,化合物 2d 和 2i 对 HL-60 细胞的凋亡诱导程度也远高于喜树碱和顺铂。这两种化合物对人类 PBMC 的抑制作用极小,IC50 值分别高达 3,582 和 1,536 μM。这些化合物在体外以 8 μM 的浓度抑制了小鼠腹水肉瘤-180 肿瘤细胞的 DNA 和 RNA 合成。上述结果表明,关键化合物 2i 具有良好的化疗潜力。