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Abstract ▼ AI-Helper

A serum-free medium that could be used for the large-scale culture of mouse hybridoma to produce monoclonal antibodies was developed. The medium was based on a 1:1 mixture of Iscove's Modified Dulbecco's Medium and Ham's F-12, supplemented with insulin 10$\mu\textrm{g}$/$m\ell$...

A serum-free medium that could be used for the large-scale culture of mouse hybridoma to produce monoclonal antibodies was developed. The medium was based on a 1:1 mixture of Iscove's Modified Dulbecco's Medium and Ham's F-12, supplemented with insulin 10$\mu\textrm{g}$/$m\ell$, transferrin 10$\mu\textrm{g}$/$m\ell$, ethanolamine 10$\mu$M and selenium 30nM (designated EBM (enriched basal medium) with the supplements). The effect of various supplements of steroid hormones, vitamins, lipid and mineral salts was investigated and their optimal concentration was determined to replace fetal calf serum (PCS). These components were added respectively and then added by way of two or three combination to discern of which component combination was effective to the culture of hybridoma. As a result, serum-free medium KM3 (EBM with BSA 100$\mu\textrm{g}$/$m\ell$, mineral cocktail and 0.05% PEG) was deter-mined. The hybridoma Alps 25-3 cultured in this medium showed almost the same growth rate as in medium added with 2% fetal bovine serum. However, the antibody concentration from KM3 cultures was 80% of that obtained from culture with FCS. KM3 was also examined for the culture of other mouse hybridomas, KW, A4W & HCGK, and it was confirmed that it could support the growth of these hybridomas and the production of monoclonal antibodies.

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