FIELD: medicine, pharmaceutics.
SUBSTANCE: present invention refers to immunology and biotechnology. What is presented is a nucleic acid coding a anti-human CD3 and CEA bi-specific one-chain antibody. Domain-binding CEA contains three CDRs of a light chain and three CDRs of a heavy chain, wherein CDR-H3 originates from anti-murine A5B7 monoclonal antibody. There is described: an expression vector, and a NC-based host cell, as well as a method for producing the bi-specific one-chain antibody with using the cell.
EFFECT: using the invention provides producing the antibody, which is stable to human soluble CEA that can find application in a therapy of epithelial tumours in the patients with high-CEA plasma.
14 cl, 27 dwg, 1 tbl
| Title | Year | Author | Number |
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| SOLUBLE CD3 STABLE PHARMACEUTICAL COMPOSITIONS | 2006 |
|
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|
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| BISPECIFIC BINDING AGENTS WITH INTERSPECIFIC SPECIFICITY | 2008 |
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RU2535992C2 |
| CD3-EPSILON-BINDING DOMAIN HAVING INTERSPECIES SPECIFICITY | 2008 |
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