Synthetic 1-Deoxynojirimycin N-Substituted Peptides Offer Prolonged Disruption to N-Linked Glycan Processing
作者:Aimé López Aguilar、Jaime Escribano、Paul Wentworth、Terry D. Butters
DOI:10.1002/cmdc.201402186
日期:2014.12
(DNJ) N‐linked peptides were synthesized. Their IC50 values were measured in vitro against α‐glucosidases I and II and were found to be in the micromolar range for both isozymes, and better than that of the iminosugar NB‐DNJ (miglustat, 3) against α‐glucosidase II. Cell‐based studies revealed that although the free iminosugar 3 is most effective at disrupting N‐linked glycan processing for short‐term
合成了一组1-脱氧野oji霉素(DNJ)N-连接的肽。他们在体外针对α-葡萄糖苷酶I和II的IC 50值进行了测量,发现两种同工酶的IC 50值都在微摩尔范围内,并且优于针对α-葡萄糖苷酶II的亚氨基糖N B-DNJ(miglustat,3)。基于细胞的研究表明,尽管游离亚氨基糖3在短期孵育(一天)中能最有效地破坏N-连接的聚糖加工,但是当基于细胞的研究延长至三天时,DNJ N-连接的四肽KDEL ,这是一个内质网(ER)保留序列,表现远好于3。在低抑制剂洗脱研究中,NB-DNJ抑制作用在24小时后降至零,但DNJ-KDEL保留了13%的活性。这种方法为将药物靶向ER并延长其活性提供了一种通用方法。此外,它是模块化的,因此,当发现新的效力增强的亚氨基糖时,可以将它们添加到此模板中进行靶向。