double-strand

Irinotecan (CPT-11) 是喜树碱的衍生物，是一种 DNA 拓扑异构酶 I (Topo I) 的抑制剂。Irinotecan 通过与 Topo I 复合物结合来阻止 DNA 链的重新连接，并导致双链 DNA 断裂和细胞死亡，具有抗肿瘤活性。

Eurycomalactone 是一种NF-κB 抑制剂，IC50=0.5 μM，是一种天然产物。它可抑制蛋白合成，降低 cyclin D1 蛋白水平，但对 TNFα 诱导的 IκBα 降解或 IKKα β 和 IκBα 的磷酸化水平没有作用。

Cylindrospermopsin, a tricyclic uracil derivative, is a cyanobacterial toxin that was first discovered in an algal bloom contaminating a local drinking supply on Palm Island in Queensland, Australia after an outbreak of a mysterious disease. Cylindrospermopsin targets protein and glutathione synthesis in hepatocytes (IC50s = 1.3 and 2.4 µM, respectively), leading to cell death. [1] It has been shown to inhibit the activity of the uridine monophosphate synthase complex with a Ki value of 10 µM.[2] Cylindrospermopsin is genotoxic, inducing DNA damage as evidenced by double strand breaks and reducing cell viability in HepG2 cells at 0.1-0.5 µg/ml.[3]