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    • 1. 发明申请
    • PURIFICATION OF STREPTOCOCCUS PNEUMONIAE TYPE 3 POLYSACCHARIDES
    • 。US E E。。。。。。。。。。。。。。。。。。
    • WO2008045852A3
    • 2008-06-19
    • PCT/US2007080768
    • 2007-10-09
    • WYETH CORPBAHLER BRIAN DOUGLASHUGHES ERIK HELLERLEE TSU-SHUN
    • BAHLER BRIAN DOUGLASHUGHES ERIK HELLERLEE TSU-SHUN
    • C12P19/04A61K31/715A61P31/04
    • C12P19/04A61K31/715Y10S424/831
    • The present invention provides improved methods for the reduction or removal of protein impurities from a complex cellular Streptococcus pneumoniae lysate or centrate comprising serotype 3 polysaccharides involving steps relating to post-lysis heating or pH adjustment. In certain methods, the lysate is heated for a time and at a temperature sufficient to denature proteins present in the lysate and cause their aggregation and precipitation. In one embodiment, the lysate is heated to at least 60°C for at least 30 minutes to cause protein aggregation and precipitation, more particularly about 60°C to about 70°C for about 30 to about 50 minutes, and even more particularly about 65°C for about 40 minutes. In other methods, the pH of the lysate or centrate is increased to at least 8.0 to improve filterability, more particularly about 8.0 to 8.4, and even more particularly about 8.2. In further methods, heating and pH adjustment steps are combined to cause the aggregation and precipitation of proteins as well as to improve filterability of the lysates or centrates. In other methods, the pH of the lysate or centrate is lowered to about 3.0 to about 5.0 to cause protein aggregation and precipitation. Such methods allow for the production of substantially purified serotype 3 polysaccharide-containing lysates or centrates.
    • 本发明提供了用于从复合细胞性肺炎链球菌裂解物或浓缩物中还原或除去蛋白质杂质的改进方法,其包含涉及裂解加热或pH调节的步骤的血清型3多糖。 在某些方法中,将裂解物加热一段时间并且在足以使存在于裂解物中的蛋白质变性并导致其聚集和沉淀的温度下加热。 在一个实施方案中,将裂解物加热至至少60℃至少30分钟以引起蛋白质聚集和沉淀,更特别地约60℃至约70℃约30至约50分钟,甚至更特别地约为 65°C约40分钟。 在其他方法中,将裂解物或浓缩物的pH增加至至少8.0以提高过滤性,更特别地约8.0至8.4,甚至更特别约8.2。 在进一步的方法中,加热和pH调节步骤相结合以引起蛋白质的聚集和沉淀以及提高裂解物或浓缩物的过滤性。 在其他方法中,裂解物或浓缩物的pH降低至约3.0至约5.0以引起蛋白质聚集和沉淀。 这样的方法允许生产基本上纯化的血清型3多糖裂解物或浓缩物。
    • 2. 发明申请
    • IMPROVED METHODS FOR THE SEPARATION OF STREPTOCOCCUS PNEUMONIAE TYPE 3 POLYSACCHARIDES
    • 分离杆菌型3型多糖的改进方法
    • WO2008045852A2
    • 2008-04-17
    • PCT/US2007/080768
    • 2007-10-09
    • WYETHBAHLER, Brian, DouglasHUGHES, Erik, HellerLEE, Tsu-shun
    • BAHLER, Brian, DouglasHUGHES, Erik, HellerLEE, Tsu-shun
    • C12P19/04A61K31/715A61P31/04
    • C12P19/04A61K31/715Y10S424/831
    • The present invention provides improved methods for the reduction or removal of protein impurities from a complex cellular Streptococcus pneumoniae lysate or centrate comprising serotype 3 polysaccharides involving steps relating to post-lysis heating or pH adjustment. In certain methods, the lysate is heated for a time and at a temperature sufficient to denature proteins present in the lysate and cause their aggregation and precipitation. In one embodiment, the lysate is heated to at least 60°C for at least 30 minutes to cause protein aggregation and precipitation, more particularly about 60°C to about 70°C for about 30 to about 50 minutes, and even more particularly about 65°C for about 40 minutes. In other methods, the pH of the lysate or centrate is increased to at least 8.0 to improve filterability, more particularly about 8.0 to 8.4, and even more particularly about 8.2. In further methods, heating and pH adjustment steps are combined to cause the aggregation and precipitation of proteins as well as to improve filterability of the lysates or centrates. In other methods, the pH of the lysate or centrate is lowered to about 3.0 to about 5.0 to cause protein aggregation and precipitation. Such methods allow for the production of substantially purified serotype 3 polysaccharide-containing lysates or centrates.
    • 本发明提供了用于从复合细胞性肺炎链球菌裂解物或浓缩物中还原或除去蛋白质杂质的改进方法,其包含血清型3多糖,其涉及裂解加热或pH调节相关的步骤。 在某些方法中,将裂解物加热一段时间并且在足以使存在于裂解物中的蛋白质变性并导致其聚集和沉淀的温度下加热。 在一个实施方案中,将裂解物加热至至少60℃至少30分钟以引起蛋白质聚集和沉淀,更特别地约60℃至约70℃约30至约50分钟,甚至更特别地约为 65°C约40分钟。 在其他方法中,将裂解物或浓缩物的pH增加至至少8.0以提高过滤性,更特别地约8.0至8.4,甚至更特别约8.2。 在进一步的方法中,加热和pH调节步骤组合以引起蛋白质的聚集和沉淀以及改善裂解物或浓缩物的过滤性。 在其他方法中,裂解物或浓缩物的pH降低至约3.0至约5.0以引起蛋白质聚集和沉淀。 这样的方法允许生产基本上纯化的血清型3多糖裂解物或中心体。