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公开(公告)号:US20090285845A1
公开(公告)日:2009-11-19
申请号:US11661665
申请日:2005-09-01
申请人: Vega Masignani , Maria Scarselli , Rino Rappuoli , Mariagrazia Pizza , Marzia Giuliani , Federica Di Marcello , Daniele Veggi , Laura Ciucchi
发明人: Vega Masignani , Maria Scarselli , Rino Rappuoli , Mariagrazia Pizza , Marzia Giuliani , Federica Di Marcello , Daniele Veggi , Laura Ciucchi
IPC分类号: A61K39/095 , C07K14/22 , C07H21/00 , A61P37/02
CPC分类号: A61K39/095 , A61K39/00 , A61K2039/55505 , C07K14/22
摘要: ‘NMB1870’ is a known surface protein in Neisseria meningitidis expressed across all serogroups. It has three distinct families. Serum raised against a given family is bactericidal within the same family, but is not active against strains which express one of the other two families i.e. intra-family but not inter-family cross-protection. The inventors have found that NMB1870 can be divided into domains, and that not all domains are required for antigenicity. Antigenic domains can be taken from each of the three NMB1870 families and expressed as a single polypeptide chain. The inventors have also found that NMB1870 exposes some of its epitopes in surface loops situated between alpha helices, and that substitution of loop epitopes from one family into the loop position in another family allows chimeric NMB1870 to be produced with multi-family antigenicity. Thus chimeric NMB1870 proteins are provided that comprise portions of NMB1870 from different families.
摘要翻译: “NMB1870”是脑膜炎奈瑟氏球菌在所有血清群中表达的已知表面蛋白质。 它有三个不同的家庭。 对同一家庭提起的血清是在同一家庭内具有杀菌作用,但对于表达其他两个家族之一,即家庭内部而不是家族间交叉保护的菌株不起作用。 发明人已经发现,NMB1870可以分为多个结构域,并不是所有的域都是抗原性所必需的。 抗原结构域可以从三个NMB1870家族中的每一个获取,并且表达为单个多肽链。 本发明人还发现NMB1870在位于α-螺旋之间的表面循环中暴露了其一些表位,并且将一个家族的环表位置换为另一家族的环位置允许以多家族抗原性产生嵌合NMB1870。 因此,提供了嵌合NMB1870蛋白,其包含来自不同家族的NMB1870的部分。
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公开(公告)号:US20130022633A1
公开(公告)日:2013-01-24
申请号:US13504476
申请日:2010-10-27
申请人: Lucia Banci , Francesca Cantini , Sara Dragonetti , Maria Antonietta Gentile , Daniele Veggi , Maria Scarselli , Mariagrazia Pizza
发明人: Lucia Banci , Francesca Cantini , Sara Dragonetti , Maria Antonietta Gentile , Daniele Veggi , Maria Scarselli , Mariagrazia Pizza
IPC分类号: C07K14/22 , C12N15/74 , A61P31/04 , C07K1/00 , A61K39/095 , A61P37/04 , C12N15/31 , C12N1/21
CPC分类号: C07K14/22 , A61K39/00 , A61K39/092 , A61K39/095
摘要: The factor H binding activity of meningococcal fHBP can be uncoupled from its bactericidal sensitivity. NMR studies have identified various amino acid residues involved in the fHBP/fH interaction and one or more of these residues is modified in a fHBP to reduce or eliminate its ability to bind to fH.
摘要翻译: 脑膜炎球菌fHBP的因子H结合活性可以与其杀菌灵敏度分离。 NMR研究已经鉴定了参与fHBP / fH相互作用的各种氨基酸残基,并且这些残基中的一个或多个在fHBP中被修饰以降低或消除其与fH结合的能力。
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