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    • 9. 发明申请
    • MEMBRANE-ASSOCIATED IMMUNOGENS OF MYCOBACTERIA
    • 膜结缔组织免疫球蛋白
    • WO1994000493A1
    • 1994-01-06
    • PCT/US1993006080
    • 1993-06-28
    • KAPOOR, ArchanaMUNSHI, Anil
    • C07K15/04
    • C07K14/35A61K39/00C07K2319/00C07K2319/40C12N9/14Y02A50/472
    • Nucleic acid encoding four novel immunodeterminant protein antigens of M. bovis BCG, which is a vaccine strain for tuberculosis, have been isolated. These genes were isolated as immunoreactive recombinant clones from a genomic library of M. bovis BCG DNA, constructed in pBR322 vector, and screened with sera collected from tuberculosis patients. The BCG DNA insert of one of the recombinants, pMBB51A, which expressed an antigen of Mr 90 kD, was sequenced completely and an ORF encoding 761 amino acids encoding a protein of deduced molecular weight 79 kD, was identified. This gene was identified to encode a membrane bound, ion-motive ATPase of M. bovis BCG. The approach described here can be used to identify immunogens of mycobacteria. In addition, the well-characterized M. bovis BCG antigens can be used in the prevention, diagnosis and treatment of tuberculosis. The 79 kD antigen is also useful in the design of recombinant vaccines against different pathogens. The sequence of the 79 kD membrane-associated polypeptides also are useful for the development of specific PCR amplification based diagnostic procedures for the detection of mycobacteria. Also, the promoter of the 79 kD antigen is useful for expressing homologous and/or heterologous antigens in mycobacteria.
    • 已经分离了编码四种新型免疫决定蛋白抗原的核酸,其为结核分枝杆菌疫苗株。 从pBR322载体构建的来自牛分枝杆菌BCG DNA的基因组文库中分离这些基因作为免疫反应性重组克隆,并用结核病患者的血清进行筛选。 鉴定了表达90kD前列腺素抗原​​的重组体pMBB51A的BCG DNA插入片段,并且编码编码分子量为79kD的推定蛋白质的761个氨基酸的ORF。 鉴定该基因编码牛分枝杆菌BCG的膜结合离子动力ATP酶。 这里描述的方法可用于鉴定分枝杆菌的免疫原。 此外,良好表征的牛分枝杆菌BCG抗原可用于预防,诊断和治疗结核病。 79 kD抗原也可用于设计针对不同病原体的重组疫苗。 79kD膜相关多肽的序列也可用于开发用于检测分枝杆菌的基于特异性PCR扩增的诊断程序。 此外,79kD抗原的启动子可用于在分枝杆菌中表达同源和/或异源抗原。