Design, synthesis, photochemical properties and cytotoxic activities of water-Soluble caged l-Leucyl-l-leucine methyl esters that control apoptosis of immune cells
作者:Hironori Mizuta、Soichiro Watanabe、Yuji Sakurai、Keiko Nishiyama、Toshiaki Furuta、Yoshiro Kobayashi、Michiko Iwamura
DOI:10.1016/s0968-0896(01)00323-6
日期:2002.3
L-Leucyl-L-leucine methyl esters (LeuLeuOMe) is a lysosomotropic agent that induces apoptosis of certain immune cells. Glucose-carrying 2-nitrobenzyl (2-NB) and 2-nitrophenethyl (2-NPE) caged LeuLeuOMe, 1a and b, were synthesized and their photochemical and immunological properties were studied. Caged glycine methyl esters (GlyOMe), 2a,b, were also prepared to examine the cytotoxic activity of the
L-亮氨酰-L-亮氨酸甲酯(LeuLeuOMe)是溶同溶性药物,可诱导某些免疫细胞凋亡。合成了带有葡萄糖的2-硝基苄基(2-NB)和2-硝基苯乙基(2-NPE)笼罩的LeuLeuOMe 1a和b,并研究了它们的光化学和免疫学特性。还制备了笼状的甘氨酸甲酯(GlyOMe)2a,b,以检查1a,b的光解副产物的细胞毒活性。所有笼中的化合物都可溶于含1%DMSO的PBS(浓度超过400 microM),并在350 nm照射下有效释放底物。尽管1a和1b均对HL60细胞无毒,但1b释放LeuLeuOMe的速度更快,并且诱导HL60细胞凋亡的效率远高于1a。尽管GlyOMe没有细胞毒性,2a和2b在照射前后的毒性几乎相同。因此,笼组的光解产物似乎对细胞无毒,并且1a和b的凋亡诱导活性可能主要是由于LeuLeuOMe引起的。