New prodrugs derived from 6-aminodopamine and 4-aminophenol as candidates for melanocyte-directed enzyme prodrug therapy (MDEPT)
作者:Sarah Knaggs、Hugh Malkin、Helen M. I. Osborn、Nana Aba O. Williams、Parveen Yaqoob
DOI:10.1039/b506404j
日期:——
Two novel tyrosinase mediated drug delivery pathways have been investigated for the selective delivery of cytotoxic units to melanocytes from urea and thiourea prodrugs. The synthesis of these prodrugs is reported, as well as oximetry data that illustrate that the targets are substrates for tyrosinase. The stability of each of the prodrugs in (i) phosphate buffer and (ii) bovine serum is discussed, and the urea prodrugs are identified as lead candidates for further studies. Finally, HPLC studies and preliminary cytotoxicity studies in a melanotic and an amelanotic cell line, that illustrate the feasibility of the approach, are presented.
我们研究了两种由酪氨酸酶介导的新型给药途径,利用尿素和硫脲原药向黑色素细胞选择性地输送细胞毒性单位。报告中介绍了这些原药的合成过程,并提供了血氧饱和度数据,说明这些原药的目标是酪氨酸酶的底物。讨论了每种原药在(i)磷酸盐缓冲液和(ii)牛血清中的稳定性,并确定脲原药为进一步研究的主要候选药物。最后,还介绍了高效液相色谱法研究以及在黑色素细胞系和黑色素细胞系中进行的初步细胞毒性研究,以说明该方法的可行性。