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    • 2. 发明申请
    • O-LINKED GLYCOSYLATION USING N-ACETYLGLUCOSAMINYL TRANSFERASES
    • 使用N-乙酰氨基葡萄糖转移的O-连接的糖蛋白
    • WO2008151258A3
    • 2009-02-12
    • PCT/US2008065825
    • 2008-06-04
    • NEOSE TECHNOLOGIES INCDEFREES SHAWN
    • DEFREES SHAWN
    • C12N9/10C12Q1/48
    • C07K14/51A61K47/60C07K14/535C07K14/56C07K14/61C07K2319/00
    • The present invention provides covalent conjugates between a polypeptide and a modifying group, such as a water-soluble polymer (e.g., PEG). The amino acid sequence of the polypeptide includes one or more O-linked glycosylation sequence, each being a substrate for a GIcNAc transferase. The modifying group is covalently linked to the polypeptide via a glycosyl-linking group interposed between and covalently linked to both the polypeptide and the modifying group. In one embodiment, a glucosamine linking group is directly attached to an amino acid residue of the O-linked glycosylation sequence. The invention further provides methods of making polypeptide conjugates. The present invention also provides non-naturally ocurring polypeptides that include at leats one O-linked linked glycosylation sequence of the invention, wherein each glycosylation sequence is a substrate for a GIcNAc transferase. The invention further provides pharmaceutical compositions that include a polypeptide conjugate of the invention.
    • 本发明提供多肽和修饰基团之间的共价缀合物,例如水溶性聚合物(例如PEG)。 多肽的氨基酸序列包括一个或多个O-连接的糖基化序列,各自为GlcNAc转移酶的底物。 修饰基团通过插入在多肽和修饰基团之间并且共价连接的糖基连接基团与多肽共价连接。 在一个实施方案中,葡糖胺连接基团直接连接到O-连接的糖基化序列的氨基酸残基。 本发明进一步提供了制备多肽缀合物的方法。 本发明还提供了非天然的多肽,其包括在本发明的一个O-连接的糖基化序列中,其中每个糖基化序列是GlcNAc转移酶的底物。 本发明进一步提供包含本发明的多肽缀合物的药物组合物。
    • 8. 发明申请
    • GLYCOCONJUGATION OF POLYPEPTIDES USING OLIGOSACCHARYLTRANSFERASES
    • 低聚糖基转移酶对多肽的糖苷键合
    • WO2009089396A2
    • 2009-07-16
    • PCT/US2009030503
    • 2009-01-08
    • NEOSE TECHNOLOGIES INCDEFREES SHAWN
    • DEFREES SHAWN
    • A61K38/21
    • C12Y304/21022A61K38/00A61K47/543A61K47/549A61K47/60C07K14/48C07K14/50C07K14/51C07K14/755C12N9/6437C12N9/644C12Y204/99018C12Y304/21021
    • The current invention provides polypeptides and polypeptide conjugates that include an exogenous N-linked glycosylation sequence. The N-linked glycosylation sequence is preferably a substrate for an oligosaccharyltransferase (e.g., bacterial PgIB), which can catalyze the transfer of a glycosyl moiety from a lipid-bound glycosyl donor molecule (e.g., a lipid-pyrophosphate-linked glycosyl moiety) to an asparagine (N) residue of the glycosylation sequence. In one example, the asparagine residue is part of an exogenous N-linked glycosylation sequence of the invention. The invention further provides methods of making the polypeptide conjugates that include contacting a polypeptide having an N-linked glycosylation sequence of the invention and a lipid-pyrophosphate-linked glycosyl moiety (or phospholipid-linked glycosyl moiety) in the presence of an oligosaccharyltransferase under conditions sufficient for the enzyme to transfer the glycosyl moiety to an asparagine residue of the N-linked glycosylation sequence. Exemplary glycosyl moieties that can be conjugated to the glycosylation sequence include GlcNAc, GlcNH, bacillosamine, 6-hydroybacillosamine, GalNAc, GaINH, GlcNAc-GlcNAc, GlcNAc-GlcNH, GlcNAc-Gal, GlcNAc-GlcNAc-Gal-Sia, GlcNAc-Gal-Sia, GlcNAc-GlcNAc-Man, and GlcNAc-GlcNAc-Man(Man)2. The transferred glycosyl moiety is optionally modified with a modifying group, such as a polymer (e.g., PEG). In one example, the modified glycosyl moiety is a GIcNAc or a sialic acid moiety.
    • 本发明提供了包含外源N联糖基化序列的多肽和多肽缀合物。 N-连接的糖基化序列优选是用于寡糖转移酶(例如细菌PgIB)的底物,其可以催化糖基部分从脂质结合的糖基供体分子(例如,脂质 - 焦磷酸连接的糖基部分)转移至 糖基化序列的天冬酰胺(N)残基。 在一个实例中,天冬酰胺残基是本发明的外源N联糖基化序列的一部分。 本发明进一步提供了制备多肽缀合物的方法,其包括在寡糖转移酶存在下,在具有本发明的N-连接糖基化序列的多肽和脂质 - 焦磷酸酯连接的糖基部分(或磷脂连接的糖基部分) 足以使酶将糖基部分转移至N-连接的糖基化序列的天冬酰胺残基。 可以与糖基化序列偶联的示例性糖基部分包括GlcNAc,GlcNH,杆菌胺,6-氢溴吡啶胺,GalNAc,GaINH,GlcNAc-GlcNAc,GlcNAc-GlcNH,GlcNAc-Gal,GlcNAc-GlcNAc-Gal-Sia,GlcNAc- Sia,GlcNAc-GlcNAc-Man和GlcNAc-GlcNAc-Man(Man)2。 转移的糖基部分任选用修饰基团如聚合物(例如PEG)修饰。 在一个实例中,修饰的糖基部分是GlcNAc或唾液酸部分。