[EN] METHODS FOR MAKING CONJUGATES FROM DISULFIDE-CONTAINING PROTEINS [FR] PROCÉDÉS POUR LA FABRICATION DE CONJUGUÉS À PARTIR DE PROTÉINES CONTENANT DU DISULFURE
METHODS FOR OXIME CONJUGATION TO KETONE-MODIFIED POLYPEPTIDES
申请人:Hu Qi-Ying
公开号:US20150150998A1
公开(公告)日:2015-06-04
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.
Methods for making conjugates from disulfide-containing proteins
申请人:Hu Qi-Ying
公开号:US10022256B2
公开(公告)日:2018-07-17
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.
Methods for oxime conjugation to ketone-modified polypeptides
申请人:Hu Qi-Ying
公开号:US10172948B2
公开(公告)日:2019-01-08
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.
METHODS FOR MAKING CONJUGATES FROM DISULFIDE-CONTAINING PROTEINS
申请人:Novartis AG
公开号:EP2925368A1
公开(公告)日:2015-10-07
[EN] METHODS FOR OXIME CONJUGATION TO KETONE-MODIFIED POLYPEPTIDES<br/>[FR] PROCÉDÉS DE CONJUGAISON OXIME À DES POLYPEPTIDE À MODIFICATION CÉTONE
申请人:NOVARTIS AG
公开号:WO2015079376A1
公开(公告)日:2015-06-04
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.