作者:Suresh, Navyashree C.、Kumar, B.M. Anil、Preetham, Habbanakuppe D、Srinivasa, Sudhanva Muddenahalli、Ali, Mohd Sajid、Al-Lohedan, Hamad A.、Kumar, Kothanahally S. Sharath、Shivamallu, Chandan、Jain, Anisha、Rangappa, Shobith、Umashankara、Mantelingu
DOI:10.1016/j.molstruc.2024.138519
日期:——
DNA strands during the replication process by reliving the topological stress. Aberrant over expression of TOPO enzymes have been observed in many cancer cells. Topoisomerase has been an attractive target to fight against cancer cells due to its critical role in refining the DNA strands. Inhibition of topoisomerase leads to double strand break, persistent accumulation of these double strand breaks are
拓扑异构酶通过消除拓扑应力,在复制过程中的 DNA 链精炼中发挥着关键作用。在许多癌细胞中观察到 TOPO 酶的异常过度表达。拓扑异构酶因其在精炼 DNA 链中的关键作用而成为对抗癌细胞的一个有吸引力的靶标。拓扑异构酶的抑制会导致双链断裂,这些双链断裂的持续积累是非常致命的,最终导致细胞凋亡。化合物 4l 在筛选的乳腺癌细胞中非常有效地诱导细胞死亡,4l 消除 MDA-MB-231 和 MBA-MB-468 细胞的增殖,IC50 分别为 18.94 和 22.68 µM。 Hoechst 和 Pi 双染色显示细胞摄取碘化丙啶后,4l 可以诱导两种乳腺癌细胞凋亡。 4l 与拓扑异构酶的分子对接揭示了与 -8.39 K Cal/mol 的强相互作用,分子动力学模拟揭示了与拓扑异构酶的强疏水相互作用。