DNA encoding humanized antibodies specific for the ganglioside G

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Recombinant dna technique included in method of making a...

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435 7021, 4351722, 4353201, 435328, 435330, 435332, 4353441, 435346, 5303873, 5303875, 5303877, 5303881, 5303882, 530867, 536 2353, 935 15, C12P 2104, C12P 2108, C12N 1500, C07H 2104

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058742557

ABSTRACT:
Chimeric human antibody expression vectors are constructed by inserting the antibody heavy chain variable region-encoding cDNA and antibody light chain variable region-encoding cDNA isolated from hybridomas producing a mouse or rat monoclonal antibody reacting with the ganglioside GM.sub.2 respectively into an expression vector for use in animal cells which contains the human antibody heavy chain constant region- or human antibody light chain constant region-encoding cDNA. The expression vectors are introduced into animal cells and the transformant thus obtained is cultured for the production of a chimeric human antibody reacting with the ganglioside GM.sub.2.
In contrast to mouse monoclonal antibodies, the chimeric human antibodies of the invention will not cause anti-mouse immunoglobulin antibody production in the patient's body but shows a prolonged blood half-life, with a reduced frequency of adverse effects, so that it can be expected to be superior to mouse monoclonal antibodies in the efficacy in the treatment of human cancer, for instance.

REFERENCES:
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Hodgson, Bio/Technology vol. 8:1245-1247, Dec. 8, 1990.
Morrison et al. Advances in Immunology 44, Dixon et al. Eds. Academic Press 198 pp. 65-92. Schlom et al. "Molecular Foundations of Oncology", Broder Ed., Williams & Wilkins, 1991 pp. 95-134.
Hakomori et al. in Monoclonal Antibodies and Functional Cell Lines Kennett et al., eds. 1985 pp. 67-100.
Kannagi et al., Handbook of Expt'l Immunology 4:1986, 117.1-117.21 Irie et al. Lancet, Apr. 8, 1989 786-7.

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