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    • 5. 发明申请
    • RECOMBINANT PRODUCTION OF BIOLOGICALLY ACTIVE PEPTIDES AND PROTEINS
    • 生物活性肽和蛋白质的重组生产
    • WO9604373A2
    • 1996-02-15
    • PCT/US9510219
    • 1995-07-26
    • MAGAININ PHARMA
    • WILLIAMS JON IPIERCE JAMES CANDERSON G MARKKARI PRASAD
    • C07K14/435C07K14/46C12N15/62C12N15/67C12N15/70C12N15/10C07K1/14C07K14/00C12N21/10
    • C07K14/435C07K14/46C07K2319/23C12N15/62C12N15/67C12N15/70
    • The present invention relates to the recombinant production of amphiphilic peptides with biologically and therapeutically significant activities. In one embodiment, this invention relates to recombinantly producing an amphiphilic peptide by providing a protease-deficient microbial host transformed with an expression vector containing DNA that encodes the amphiphilic peptide under the control of a regulatory sequence operable in the microbial host and expressing the amphiphilic peptide in the tranformed microbial host. In another embodiment, this invention relates to providing an E. coli protease-deficient K-12 cell transformed with a vector that expresses a cleavable fusion protein comprising at least part of a carbohydrate binding protein and the amphiphilic peptide in the cell, expressing the fusion protein in the cell, and cleaving the fusion protein to obtain the amphiphilic peptide substantially free of carbohydrate binding protein residues. The biologically active amphiphilic peptide so produced can be further treated chemically or enzymatically to obtain a chemically distinct amphiphilic peptide with improved biological and therapeutic properties.
    • 本发明涉及具有生物学和治疗学重要活性的两亲肽的重组生产。 在一个实施方案中,本发明涉及通过提供用含有编码两亲肽的表达载体转化的蛋白酶缺陷型微生物宿主来重组产生两亲性肽,所述表达载体在可在微生物宿主中操作的调节序列的控制下并表达两亲肽 在转化的微生物宿主中。 在另一个实施方案中,本发明涉及提供用表达可切割融合蛋白的载体转化的大肠杆菌蛋白酶缺陷型K-12细胞,所述载体包含至少部分碳水化合物结合蛋白和细胞中的两亲肽,表达融合 蛋白质,并切割融合蛋白以获得基本上不含碳水化合物结合蛋白质残基的两亲肽。 如此生产的生物活性两亲肽可以进一步进行化学或酶学处理,以获得具有改善的生物学和治疗性质的化学不同的两亲性肽。
    • 10. 发明申请
    • BIOLOGICALLY ACTIVE PEPTIDES WITH REDUCED TOXICITY IN ANIMALS AND A METHOD FOR PREPARING SAME
    • 动物中具有降低毒性的生物活性肽及其制备方法
    • WO9903488A3
    • 1999-04-08
    • PCT/US9814610
    • 1998-07-15
    • MAGAININ PHARMA
    • KARI U PRASADWILLIAMS TAFFY JMCLANE MICHAEL
    • A61K38/00A61P31/00A61P35/00C07K1/02C07K14/435C07K14/46C07K14/47A61K38/17A61K38/04C07K14/00
    • C07K14/46A61K38/00C07K14/43563
    • The present invention relates to biologically active peptides with reduced toxicity and methods of preparing them. The peptides of the invention, which can be unsubstituted or N-terminal substituted have formula (I), wherein X is a biologically active amphiphilic ion channel-forming peptide or protein, T is a lipophilic moiety or hydrogen, and W is T or hydrogen. Preferably T is formula (II), wherein R is a hydrocarbon (alkyl or aromatic or alkylaromatic) having at least 2 and no more than 10 carbon atoms. T is preferably an octanoyl group. The peptides and proteins of the invention have improved antimicrobial and anti-tumor biological activity while exhibiting reduced toxicity. A preferred method of reducing toxicity involves the formation of related methane sulfonate derivatives or analogues. Additionally, the compounds of the invention may be used to treat sepsis, septic shock, and lung infections, such as those occuring in cystic fibrosis.
    • 本发明涉及毒性降低的生物活性肽及其制备方法。 可以是未取代或N-末端取代的本发明的肽具有式(I),其中X是生物活性两亲离子通道形成肽或蛋白质,T是亲脂性部分或氢,W是T或氢 。 T优选为式(II),其中R为具有至少2个且不超过10个碳原子的烃(烷基或芳族或烷基芳族)。 T优选为辛酰基。 本发明的肽和蛋白质具有改善的抗微生物和抗肿瘤生物活性,同时显示降低的毒性。 降低毒性的优选方法涉及形成相关的甲磺酸衍生物或类似物。 此外,本发明的化合物可用于治疗败血症,败血性休克和肺部感染,例如发生在囊性纤维化中的那些。