Method for obtaining expression of mixed polypeptide particles in yeast
    1.
    发明授权
    Method for obtaining expression of mixed polypeptide particles in yeast 失效
    在酵母中获得混合多肽颗粒表达的方法

    公开(公告)号:US06306625B1

    公开(公告)日:2001-10-23

    申请号:US08823578

    申请日:1997-03-25

    IPC分类号: C12N1509

    摘要: The present invention provides a method for obtaining expression of a mixed hepatitis B surface antigen particle, e.g., a particle of mixed polypeptide composition, in yeast. Also disclosed is a method for obtaining multimeric structures presenting two or more polypeptides by expression in yeast as fusion proteins with the S antigen of HBsAg.

    摘要翻译: 本发明提供了在酵母中获得混合的乙型肝炎表面抗原颗粒(例如混合多肽组合物的颗粒)的表达的方法。 还公开了通过在酵母中表达作为与HBsAg的S抗原的融合蛋白的两种或多种多肽的多聚体结构的方法。

    Antigens and methods therefor
    2.
    发明授权
    Antigens and methods therefor 失效
    抗原及其方法

    公开(公告)号:US06103519A

    公开(公告)日:2000-08-15

    申请号:US443054

    申请日:1995-05-17

    摘要: A composite particle comprising at least two polypeptides corresponding to all or part of a protein having the biological activity of one of the hepatitis B surface antigens, wherein the particle presents at least two antigenic determinants provided by the S-protein, preS2-protein or preS1-protein, said particle optionally further comprising host specific lipids. The invention also provides a modified hepatitis B surface antigen L protein which may be used alone or incorporated into such composite particles.A particular embodiment of the modified L protein (L*) comprises residues 12-52 followed by residues 133-145 followed by residues 175-400 of the L protein and a particular embodiment of a composite particle has the form (L*, S) where S is the S-protein of HBsAg.Improved hepatitis B vaccines may be prepared following expression of the above immunogens, especially in yeasts such as S. cerevisiae and Hansenula polymorpha.

    摘要翻译: 包含至少两个对应于具有乙型肝炎表面抗原之一的生物活性的蛋白质全部或部分的多肽的复合颗粒,其中所述颗粒呈现由S-蛋白质,preS2-蛋白质或preS1提供的至少两种抗原决定簇 所述颗粒任选地还包含宿主特异性脂质。 本发明还提供了可以单独使用或并入这种复合颗粒中的改良的乙型肝炎表面抗原L蛋白。 修饰的L蛋白(L *)的一个具体实施方案包括残基12-52,其后是残基133-145,随后是L蛋白的残基175-400,复合颗粒的具体实施方案具有形式(L *,S) 其中S是HBsAg的S-蛋白。 改进的乙型肝炎疫苗可以在上述免疫原的表达后制备,特别是在酵母如酿酒酵母和多形汉逊酵母中。