suramin

Suramin Sodium Salt (BAY-205) 是可逆的竞争性蛋白酪氨酸磷酸酶抑制剂。它抑制 IP5K，是抗寄生虫，抗肿瘤和抗血管生成剂。它是sirtuins 的有效抑制剂，也是 SARS-CoV-2 RNA 依赖性 RNA 聚合酶抑制剂。

Suramin 是一种 SARS-CoV-2 RNA 依赖性 RNA 聚合酶 (RdRp)和蛋白酪氨酸磷酸酶 (PTPases)双功能抑制剂，具有抗寄生虫 (antiparasitic)，抗肿瘤和抗血管生成活性，抑制 sirtuins 和 DNA topoisomerase II。

NF864, a suramin analog, is a P2X1 receptor inhibitor.

NK314 is a novel synthetic benzo[c]phenanthridine alkaloid that shows strong antitumor activity. It inhibited topoisomerase II activity and stabilized topoisomerase II-DNA cleavable complexes. The DNA breaks occurred within 1h after treatment with NK314 even without digestion of topoisomerase II by proteinase K, whereas etoposide required digestion of the enzyme protein in cleavable complex to detect DNA breaks. Pretreatment with topoisomerase II catalytic inhibitors, ICRF-193 and suramin, reduced both cleavable complex-mediated DNA breaks and proteinase K-independent DNA breaks, but protease inhibitors and nuclease inhibitors only decreased the latter.