Sensitive and specific enzyme immunoassays for antigenic trisaccharide from Bacillus anthracis spores
作者:Sandrine G. Y. Dhénin、Vincent Moreau、Marie-Claire Nevers、Christophe Créminon、Florence Djedaïni-Pilard
DOI:10.1039/b914534f
日期:——
A straightforward synthesis of an anthrose-containing trisaccharide derived from Bacillus anthracis was achieved. Antibodies raised against this hapten provide a highly sensitive enzyme immunoassay with a detection limit of 8.5 pmol mL−1. By investigating the specificity of the antibodies obtained using different mono-, di- and trisaccharide synthetic analogues, we demonstrated that the epitope was mainly made up of the methyl group at C-5, the butamido group at C-4 and the hydroxyl at C-3 of the anthrose unit, the other parts of the trisaccharide appearing little involved in the recognition.
成功实现了一种来源于炭疽杆菌的含炭疽糖的三糖的直接合成。针对这种半抗原产生的抗体提供了高度敏感的酶免疫测定法,其检测限为8.5 pmol mL−1。通过研究使用不同单糖、二糖和三糖合成类似物获得的抗体的特异性,我们证明表位主要由炭疽糖单元中的C-5甲基、C-4丁酰胺基和C-3羟基组成,三糖的其他部分在识别中涉及较少。