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    • 4. 发明公开
    • Method for shielding functional sites or epitopes on proteins
    • Verfahren zur Abschirmung von funktionalen Stellen oder Epitopen von Proteinen
    • EP2314320A2
    • 2011-04-27
    • EP10183132.9
    • 2006-03-31
    • Istituto di Ricerche di Biologia Molecolare P. Angeletti S.p.A.
    • Bianchi, ElisabettaPessi, Antonello
    • A61K47/48C07K14/16
    • C07K14/005A61K39/00A61K47/60C12N2740/16122
    • Methods of site-specifically shielding one or more binding sites within a polypeptide are disclosed, comprising attaching at least one small molecular weight, water-soluble polymer to said polypeptide such that the binding site is masked by said polymer. The shielding of a binding site ( e.g ., epitope) as per the disclosed methods acts to either eliminate or substantially reduce the biological response induced by the interaction between said binding site and its cognate receptor, helping to refocus the biological response toward unmasked portions of the polypeptide. Pharmaceutical products generated as per the methods described herein ( e.g ., polymer-modified antigens and vaccine compositions comprising them), as well as the use thereof, induce a specific immune response against unmasked portions of the polypeptides when directly introduced into living vertebrate tissue, preferably a mammalian host such as a human or a non-human mammal of commercial or domestic veterinary importance, generating selective immunoprotection in said mammal.
    • 公开了特异性屏蔽多肽内的一个或多个结合位点的方法,包括将至少一种小分子量的水溶性聚合物连接到所述多肽上,使得结合位点被所述聚合物掩蔽。 根据所公开的方法,结合位点(例如,表位)的屏蔽用于消除或显着降低由所述结合位点与其同源受体之间的相互作用诱导的生物反应,有助于将生物反应重新聚焦到未被掩蔽的部分 多肽。 根据本文所述的方法(例如,聚合物修饰的抗原和包含它们的疫苗组合物)产生的药物产品及其用途在直接引入活的脊椎动物组织时诱导针对多肽的未掩蔽部分的特异性免疫应答, 优选哺乳动物宿主,例如商业或家庭兽医重要的人或非人哺乳动物,在所述哺乳动物中产生选择性免疫保护。