Both <scp>d</scp>- and <scp>l</scp>-Glucose Polyphosphates Mimic <scp>d</scp>-<i>myo</i>-Inositol 1,4,5-Trisphosphate: New Synthetic Agonists and Partial Agonists at the Ins(1,4,5)P<sub>3</sub> Receptor
作者:Megan L. Shipton、Andrew M. Riley、Ana M. Rossi、Charles A. Brearley、Colin W. Taylor、Barry V. L. Potter
DOI:10.1021/acs.jmedchem.0c00215
日期:2020.5.28
structure-activity relationships for this Ins(1,4,5)P3R agonist. l-Glucose-derived ligands, methyl α-l-glucopyranoside 2,3,6-trisphosphate and methyl α-l-glucopyranoside 2,4,6-trisphosphate, are also active, while their corresponding d-enantiomers, methyl α-d-glucopyranoside 2,3,6-trisphosphate and methyl α-d-glucopyranoside 2,4,6-trisphosphate, are inactive. Interestingly, both l-glucose-derived ligands are
手性糖衍生物是 Ca2+ 动员细胞内信使 d-肌醇 1,4,5-三磷酸 [Ins(1,4,5)P3] 的潜在环醇替代物。合成了来自 d-和 l-葡萄糖的六种新型多磷酸化类似物。研究了与 Ins(1,4,5)P3 受体 [Ins(1,4,5)P3R] 的结合以及通过 1 型 Ins(1,4,5)P3Rs 从细胞内储存释放 Ca2+ 的能力。β-d-吡喃葡萄糖基 1,3,4-tris-磷酸盐,具有与 Ins(1,4,5)P3 相似的磷酸盐区域化学和立体化学,α-d-吡喃葡萄糖基 1,3,4-tris-磷酸盐是完全激动剂,在 Ca2+ 释放试验中与 Ins(1,4,5)P3 等效,分别比 Ins(1,4,5)P3 弱 23 倍,与 Ins(1,4,5)P3 相似,在结合测定中弱 15 倍。它们可以被视为腺磷蛋白 A 的截短类似物,并加深对这种 Ins(1,4,5)P3R 激动剂结构-活性关系的理