中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (S)-(-)-tert-butyl-2-<(tert-butoxycarbonyl)amino>-6-hydroxyhexanoate | 213176-15-9 | C15H29NO5 | 303.399 |
(S)-6-氨基-2-((叔丁氧基羰基)氨基)己酸叔丁酯 | tert-butyl N-tert-butyloxycarbonyl-L-lysinate | 7750-42-7 | C15H30N2O4 | 302.414 |
—— | (S)-(-)-1-tert-butyl-2-<(tert-butoxycarbonyl)amino>-5-hexenoate | 145037-74-7 | C15H27NO4 | 285.384 |
BOC-L-6-羟基正亮氨酸 | Boc-L-6-hydroxynorleucine | 77611-37-1 | C11H21NO5 | 247.291 |
N-alpha-叔丁氧羰基-L-赖氨酸 | Boc-Lys-OH | 13734-28-6 | C11H22N2O4 | 246.307 |
—— | tert-butyl (S)-2-(bis(tert-butoxycarbonyl)amino)-hex-5-enoate | 226985-05-3 | C20H35NO6 | 385.501 |
—— | (2S)-6-benzyloxy-2-tert-butyloxycarbonylaminohexanoic acid | 200405-50-1 | C18H27NO5 | 337.416 |
Advanced glycation end-products (AGEs) are a heterogeneous group of compounds formed by non-enzymatic reaction between reducing-sugar and Arg/Lys in proteins and are involved in various diabetic complications. GA-pyridine is derived from glycolaldehyde and is one of the most cytotoxic AGEs. Here, we established a single-chain Fv (scFv) antibody against GA-pyridine, 73MuL9-scFv, and examined the details of its specificity and antigen recognition by using various techniques involving biophysics, chemical biology and structural biology. We also synthesized several compounds that differ slightly in regard to the position and number of GA-pyridine substituent groups, and revealed that GA-pyridine was specifically bound to 73MuL9-scFv. Thermodynamic analysis revealed that the association of GA-pyridine to 73MuL9-scFv was an exothermic and enthalpy driven reaction, and thus that the antigen recognition involved multiple specific interactions. Crystallographic analysis of the Fv fragment of 73MuL9-scFv revealed that several CH-π and hydrogen bond interactions took place between the Fv-fragment and GA-pyridine, which was consistent with the results of thermodynamic analysis. Further studies using 73MuL9-scFv as a tool to clarify the relevance of GA-pyridine to diabetic complications are warranted.
高级糖基化终产物(AGEs)是一类由还原糖与蛋白质中的Arg/Lys非酶反应形成的化合物群,与各种糖尿病并发症有关。GA-吡啶是由甘醛衍生而来的最具细胞毒性的AGEs之一。在这里,我们建立了一个针对GA-吡啶的单链Fv (scFv) 抗体,73MuL9-scFv,并使用生物物理学、化学生物学和结构生物学等各种技术检查了它的特异性和抗原识别的细节。我们还合成了几种GA-吡啶取代基在位置和数量上略有不同的化合物,并揭示了GA-吡啶特异地结合到73MuL9-scFv。热力学分析表明,GA-吡啶与73MuL9-scFv的结合是一个放热的焓驱动反应,因此抗原识别涉及多个特异性相互作用。73MuL9-scFv的Fv片段的晶体学分析揭示了Fv片段与GA-吡啶之间发生了几个CH-π和氢键相互作用,这与热力学分析的结果一致。进一步使用73MuL9-scFv作为工具,阐明GA-吡啶与糖尿病并发症的相关性是值得的。