Purification of pertussis toxins
    5.
    发明授权
    Purification of pertussis toxins 失效
    百日咳毒素的净化

    公开(公告)号:US4997915A

    公开(公告)日:1991-03-05

    申请号:US333964

    申请日:1989-04-06

    CPC分类号: C07K14/235 A61K39/00

    摘要: Lymphocytosis promoting factor (LPF) and filamentous hemaglutinin (FHA) are isolated from the growth medium of the Bordatella pertussis organism and purified by selecting adsorbing the LPF and FHA on a selective adsorbing medium, such as filter aids or gel filtration media, at low ionic strength and subsequently removing the adsorbed LPF and FHA at using an aqueous medium of high ionic strength, either simultaneously or sequentially. Prior to desorbtion of the LPF and FHA, the adsorbing medium may be contacted with an aqueous solution of a non-ionic detergent, which enables the LPF and FHA subsequently desorbed to be substantially free from contamination by lipopolysaccharides (LPS). The LPF and FHA may be further purified on hydroxyapatite. The LPF and FHA may be detoxified separately or together by contacting with a cross-linking agent, such as glutaraldehyde or formaldehyde, in the presence of an anti-aggregation agent. The resulting purified and detoxified LPF and FHA may be used to formulate a vaccine against pertussis.