发明名称 |
Method of conjugating an activated ester to an amine-containing biological material |
摘要 |
A coupling agent which is an activated ester such as N-maleimido-6-aminocaproyl-HNSA (mal-sac-HNSA) is formed by reacting 4-hydroxyl-3-nitrobenzene sulfonic acid sodium salt (HNSA) with a carboxylic acid moiety of a compound such as N-maleimido-6-aminocaproic acid. The coupling agent is reacted with an amino group of an amine-containing biological material such as a protein at a pH of about 5.5 to 10.0 and HNSA is released. The released HNSA is spectroscopically measured at a wavelength of from about 350 nm to about 500 nm to precisely monitor and control conjugating of the coupling agent to the biological material. The resulting product is coupled to a sulfhydryl group or other group of another material to provide cross-linking between the two. This enables joining the biological material to one another, to a support matrix, to a label, to a hapten, and to other materials. An immunotoxin for therapeutic use can be prepared by conjugating the coupling agent to an antibody such as a monoclonal antibody with tumor cell specificity and then joining the resultant conjugate to a cytotoxic molecule.
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申请公布号 |
US5663306(A) |
申请公布日期 |
1997.09.02 |
申请号 |
US19870095396 |
申请日期 |
1987.09.10 |
申请人 |
CHIRON CORPORATION |
发明人 |
ALDWIN, LOIS;NITECKI, DANUTE E. |
分类号 |
A61K47/48;C07D207/44;C07D207/452;G01N33/543;(IPC1-7):C07K1/10;A61K39/44;G01N33/547 |
主分类号 |
A61K47/48 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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