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    • 3. 发明申请
    • PURIFICATION, CHARACTERIZATION AND USE OF PROTECTIVE ANTIGENIC STRUCTURES AGAINST TRYPANOSOMES AND RELATED PARASITES
    • 保护性抗原结构的清除,表征和使用对抗原和相关的PARASITES
    • WO2002019960A2
    • 2002-03-14
    • PCT/BE2001000146
    • 2001-09-06
    • UNIVERSITE LIBRE DE BRUXELLESBLACK, Samuel, J.MURPHY, NoelPEARSON, TerryPAYS, EtienneNOLAN, Derek
    • UNIVERSITE LIBRE DE BRUXELLESBLACK, Samuel, J.MURPHY, NoelPEARSON, Terry
    • A61K
    • A61K39/005A61K2039/505C07K16/20H04L29/06027H04L67/00H04L69/16H04L69/329
    • The present invention is related to a method for the recovering and the characterization of a surface antigenic structure of a trypanosome flagellar pocket (fp), characterized in that it comprises the following steps:- purifying membrane glycoproteins located on the surface of the flagellar pocket (fp) of said trypanosome, preferably glycoproteins containing linear poly-N-acetyllactosamine (pNAL), from a biological extract comprising said trypanosome,- deglycosylating said glycoproteins into proteins,- obtaining hybridomas secreting monoclonal antibodies directed against said proteins, - screening the resulting hybridomas for selecting a positive hybridoma which secretes an antibody able to inhibit the trypanosome growth (trypanosome activity in vitro), - obtaining said antibody from said positive hybridoma, - selecting and purifying an antigenic structure among the proteins of the trypanosome flagellar pocket (fp) by binding said proteins to said monoclonal antibody, and- possibly identifying the amino acid sequence of said antigenic structure and possibly the nucleotide sequence encoding said antigenic structure.
    • 本发明涉及一种回收和表征锥虫鞭毛袋(fp)的表面抗原结构的方法,其特征在于包括以下步骤: - 纯化位于鞭毛袋表面上的膜糖蛋白( fp),优选含有线性聚-N-乙酰乳糖胺(pNAL)的糖蛋白,来自包含所述锥虫体的生物提取物,将所述糖蛋白脱糖基化成蛋白质, - 获得分泌针对所述蛋白质的单克隆抗体的杂交瘤,筛选所得杂交瘤 用于选择分泌能够抑制锥虫体生长的抗体(体外锥虫体活性)的阳性杂交瘤, - 从所述阳性杂交瘤获得所述抗体, - 通过以下步骤选择和纯化锥虫体鞭毛袋(fp)的蛋白质中的抗原结构: 将所述蛋白质结合到所述单克隆抗体,和 - 可能是ide 确定所述抗原结构的氨基酸序列和可能的编码所述抗原结构的核苷酸序列。