DNA intercalating molecules are promising chemotherapeutic agents. In the present study, a novel DNA intercalating compound of pyrimido[4′,5′:4,5]selenolo(2,3-b)quinoline series having 8-methyl-4-(3 diethylaminopropylamino) side chain is studied for its chemotherapeutic properties. Our results showed that 8-methyl-4-(3 diethylaminopropylamino) pyrimido [4′,5′:4,5] selenolo(2,3-b)quinoline (MDPSQ) induces cytotoxicity in a time- and concentration-dependent manner on leukemic cell lines. Both cell cycle analysis and tritiated thymidine assays revealed that MDPSQ affects DNA replication. Treatment with MDPSQ resulted in both elevated levels of DNA strand breaks and repair proteins, further indicating its cytotoxic effects. Besides, Annexin V/PI staining revealed that MDPSQ induces cell death by triggering necrosis rather than apoptosis.
DNA 插层分子是很有前景的化疗药物。本研究对一种具有 8-甲基-4-(3-二乙
氨基丙基
氨基)侧链的
嘧啶并[4′,5′:4,5]
硒并[2,3-b]
喹啉系列新型 DNA 插层化合物进行了化疗特性研究。研究结果表明,8-甲基-4-(3-
二乙胺基丙基
氨基)
嘧啶并[4′,5′:4,5]
硒并[2,3-b]
喹啉(MDPSQ)对白血病细胞株具有时间和浓度依赖性的细胞毒性。细胞周期分析和三价
胸苷测定均显示,MDPSQ 会影响 DNA 复制。用 MDPSQ 处理会导致 DNA 链断裂和修复蛋白
水平升高,这进一步表明了它的细胞毒性作用。此外,Annexin V/
PI染色显示,MDPSQ通过引发细胞坏死而不是凋亡来诱导
细胞死亡。