3-(3-Butylamino-2-hydroxy-propoxy)-1-hydroxy-xanthen-9-one acts as a topoisomerase IIα catalytic inhibitor with low DNA damage
作者:So-Eun Park、In-Hye Chang、Kyu-Yeon Jun、Eunyoung Lee、Eung-Seok Lee、Younghwa Na、Youngjoo Kwon
DOI:10.1016/j.ejmech.2013.07.048
日期:2013.11
compounds are in the order of 4 (n = 4) > 1 (n = 3) >> 5 (n = 5) ≈ 6 (n = 6); 8 (n = 4) >> 7 (n = 3) ≈ 9 (n = 5) ≈ 10 (n = 6) where n is the number of carbon in the aliphatic side chain in ring C and compounds 7–10 have additional methoxy group in ring A compared to compounds 1, 4–6. Compound 4 showed efficient cytotoxicities against T47D (IC50: 0.93 ± 0.04 μM) and HCT15 (IC50: 0.78 ± 0.01 μM) cells
作为一项连续研究,我们制备了几种烷基胺(n = 3–6),并评估了其药理活性和作用方式。在拓扑异构酶IIα(topoIIα)抑制试验中,化合物4在10μM浓度下显示出最强的抑制活性。化合物的抑制活性是在顺序4(Ñ = 4)> 1(Ñ = 3)>> 5(Ñ = 5)≈ 6(Ñ = 6); 8(Ñ = 4)>> 7(Ñ = 3)≈ 9(Ñ = 5)≈ 10(Ñ = 6),其中Ñ是在C环的脂族侧链的碳的数目和化合物7 - 10具有比化合物中环A附加甲氧基1,4 - 6。化合物4对T47D(IC 50:0.93±0.04μM)和HCT15(IC 50:0.78±0.01μM)细胞表现出有效的细胞毒性,其毒性高于依托泊苷。化合物4也是一种具有ATP竞争能力的人topoIIα催化抑制剂,具有部分阻断人topoIIα催化的ATP水解并嵌入DNA的作用。化合物4在HCT15人