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    • 7. 发明申请
    • METHODS FOR OXIME CONJUGATION TO KETONE-MODIFIED POLYPEPTIDES
    • 用于与酮改性聚合物结合的方法
    • WO2015079376A1
    • 2015-06-04
    • PCT/IB2014/066300
    • 2014-11-24
    • NOVARTIS AGHU, Qi-YingIMASE, Hidetomo
    • HU, Qi-YingIMASE, Hidetomo
    • A61K47/48
    • A61K47/48038A61K47/542A61K47/62A61K47/646A61K47/68A61K47/6803A61K47/6849C07K1/1133C07K7/64C07K2317/40
    • The invention provides improved methods to prepare protein conjugates from a ketone-modified protein. In one embodiment, the protein is prepared by linking two free cysteines by reaction with a 1,3-dihaloacetone or similar ketone-containing reactant, linking the sulfur atoms of the two cysteines together. The ketone inserted between the sulfur atoms is then used to form an oxime, thus conjugating the protein to a payload. In another embodiment, two cysteine residues are tied together by reaction with a 1,3-dihaloacetone or similar reactant, and the new ketone is used to form an oxime with a suitable payload molecule, thus conjugating the protein to a payload. The method provides improved reaction conditions for the oxime formation, whereby higher yields and Improved product homogeneity are achieved.
    • 本发明提供了从酮修饰的蛋白质制备蛋白质缀合物的改进方法。 在一个实施方案中,通过与1,3-二卤代丙酮或类似的含酮反应物反应连接两个游离半胱氨酸来制备蛋白质,其将两个半胱氨酸的硫原子连接在一起。 然后将插入硫原子之间的酮用于形成肟,从而使蛋白质与有效载荷共轭。 在另一个实施方案中,通过与1,3-二卤代丙酮或类似的反应物反应将两个半胱氨酸残基连接在一起,并且新的酮用于形成具有合适有效载荷分子的肟,从而​​将蛋白质与有效载荷共轭。 该方法为肟形成提供改进的反应条件,从而获得更高的产率和改进的产物均匀性。
    • 9. 发明申请
    • METHODS FOR MAKING CONJUGATES FROM DISULFIDE-CONTAINING PROTEINS
    • 从含有蛋白质的蛋白质制备结合物的方法
    • WO2014083505A1
    • 2014-06-05
    • PCT/IB2013/060427
    • 2013-11-26
    • NOVARTIS AGHU, Qi-YingIMASE, Hidetomo
    • HU, Qi-YingIMASE, Hidetomo
    • A61K47/48
    • A61F5/0006A61C5/90A61F5/566A61K47/542A61K47/6415A61K47/646A61K47/6803A61K47/6849
    • The invention provides methods to prepare protein conjugates from proteins having at least two cysteines. In one embodiment, a protein with a disulfide linkage is reduced to provide two free cysteines for reaction with a 1,3-dihaloacetone or similar reactant, linking the sulfur atoms of the two cysteines together. The ketone inserted between the sulfur atoms is then used to form a Schiff base to an aminated payload molecule, thus conjugating the protein to a payload. In another embodiment, two cysteine residues are tied together by reaction with a 1,3-dihaloacetone or similar reactant. The linkage between the sulfur atoms in each case holds the protein or peptide in a constrained conformation, while also providing a convenient place for attaching a payload with good specificity and efficiency.
    • 本发明提供了从具有至少两个半胱氨酸的蛋白质制备蛋白质缀合物的方法。 在一个实施方案中,具有二硫键的蛋白质被还原以提供两个游离半胱氨酸,用于与1,3-二卤代丙酮或类似的反应物反应,将两个半胱氨酸的硫原子连接在一起。 然后将插入硫原子之间的酮用于形成胺化有效载体分子的席夫碱,从而将蛋白质与有效载荷共轭。 在另一个实施方案中,通过与1,3-二卤代丙酮或类似的反应物反应将两个半胱氨酸残基连接在一起。 每种情况下硫原子之间的连接将蛋白质或肽保持在约束的构象中,同时也提供了一种方便的附着有效载荷的特点和效率的地方。