Ethylene Glycol and Amino Acid Derivatives of 5-Aminolevulinic Acid as New Photosensitizing Precursors of Protoporphyrin IX in Cells
作者:Yann Berger、Alain Greppi、Olivier Siri、Reinhard Neier、Lucienne Juillerat-Jeanneret
DOI:10.1021/jm000981q
日期:2000.12.1
of cancer and is synthesized intracellularly from aminolevulinic acid (ALA) precursors. To evaluate means to specifically target ALA derivatives to defined cells, we have synthesized and characterized ethylene glycol esters and amino acid pseudodipeptide derivatives of ALA as potential specific substrates for cellular esterases and aminopeptidases, respectively. The PpIX formation induced by these
原卟啉IX(PpIX)在癌症的光动力检测和治疗(PDT)中用作光敏剂,由氨基乙酰丙酸(ALA)前体在细胞内合成。为了评估将ALA衍生物特异性靶向特定细胞的方法,我们合成并表征了ALA的乙二醇酯和氨基酸假二肽衍生物分别作为细胞酯酶和氨基肽酶的潜在特异性底物。使用人类和大鼠的癌细胞系和内皮细胞培养物研究了由这些产物诱导的PpIX形成。这些化合物在没有光照的情况下的细胞毒性也得到了控制。结果表明,乙二醇酯可以诱导高水平的PpIX,并在低于其细胞毒性阈值的浓度下有用。