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    • 61. 发明申请
    • NOVEL ANTIBIOTIC COMPRISING AN ANTIBODY MIMETIC, ITS PREPARATION METHODS AND USES THEREOF
    • 包含抗体的新型抗生素,其制备方法及其用途
    • US20120190826A1
    • 2012-07-26
    • US13013693
    • 2011-01-25
    • Xiaoqing Qiu
    • Xiaoqing Qiu
    • C07K16/12C12N15/63C12P21/00C07H21/00
    • C07K14/245A61K38/00A61K47/48484A61K47/48507A61K47/6829A61K47/6835A61K2039/505C07K16/1217C07K2317/565C07K2317/567C07K2317/569C07K2317/60C07K2319/01C07K2319/30
    • The present invention belongs to field of biology and medicine, and especially relates to a novel antibiotic comprising an antibody mimetic antibody, its preparation methods and uses thereof. A novel antibiotic comprising a antibody mimetic covalently bonded to the carboxyl end of a colicin polypeptide or a channel-forming domain polypeptide of a colicin, wherein said colicin is selected from the group consisting of Colicin E1, Ia, Ib, A, B, N; wherein said antibody mimetic being yielded by fusing two complementarity determining regions (CDRs), VHCDR1 and VLCDR3 through a cognate framework region (VHFR2) of an immunoglobulin; wherein said the immunoglobulin specifically recognizes the bacterial porins. Its antibacterial ability is a thousandfold powerful than normal antibiotics. Due to its unique action mechanism, drug resistance resulted in mutation can hardly be acquired by pathogenic bacteria. And the antibiotic will not hurt normal human cells when it kills pathogenic bacteria. Therefore, it can be used for manufacturing antibacterial medicament of killing Neisseria meningitidis, vancomycin-resistant Enterococcus faecalis, methicillin-resistant Staphylococcus aureus, multidrug-resistance Pseudomonas aeruginosa or Mycobacterium tuberculosis.
    • 本发明属于生物学和医学领域,特别涉及包含抗体模拟抗体的新型抗生素,其制备方法和用途。 一种新型抗生素,其包含共价键合到大肠杆菌素多肽的羧基末端的抗体模拟物或者大肠菌素的通道形成结构域多肽,其中所述大肠菌素选自Colicin E1,Ia,Ib,A,B,N ; 其中通过将两个互补决定区(CDR),VHCDR1和VLCDR3通过免疫球蛋白的同源框架区(VHFR2)融合产生所述抗体模拟物; 其中所述免疫球蛋白特异性识别细菌孔蛋白。 其抗菌能力比正常抗生素强1000倍。 由于其独特的作用机制,导致突变的耐药性几乎不能被致病菌获得。 抗生素在杀死病原菌时不会伤害正常的人类细胞。 因此,可用于制造杀伤脑膜炎奈瑟菌,万古霉素耐药性粪肠球菌,耐甲氧西林金黄色葡萄球菌,多药耐药铜绿假单胞菌或结核分枝杆菌的抗菌药物。