中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
5-甲基-1-[4-[(7-氧代-7H-呋喃并[3,2-g][1]苯并吡喃-9-基)氧基]丁基]-2,4(1H,3H)-嘧啶二酮 | 9-(1-thyminylbutoxy)psoralen | 78497-53-7 | C20H18N2O6 | 382.373 |
We report here the synthesis of novel thymine biomimetic photo-adducts bearing an alkane spacer between nucleobases and characterized by antimelanoma activity against two mutated cancer cell lines overexpressing human Topoisomerase 1 (TOP1), namely SKMEL28 and RPMI7951. Among them, Dewar Valence photo-adducts showed a selectivity index higher than the corresponding pyrimidine-(6-4)-pyrimidone and cyclobutane counterpart and were characterized by the highest affinity towards TOP1/DNA complex as evaluated by molecular docking analysis. The antimelanoma activity of novel photo-adducts was retained after loading into UV photo-protective lignin nanoparticles as stabilizing agent and efficient drug delivery system. Overall, these results support a combined antimelanoma and UV sunscreen strategy involving the use of photo-protective lignin nanoparticles for the controlled release of thymine dimers on the skin followed by their sacrificial transformation into photo-adducts and successive inhibition of melanoma and alert of cellular UV machinery repair pathways.