Abstract
For producing a large quantity of human nerve growth factor beta (hNGF-beta), the recombinant adenovirus containing an expression cassette of hNGF-beta complementary DNA gene was constructed and then instilled directly into goats' mammary glands. The recombinant hNGF-beta was detected in the milk. The maximal expression level of recombinant hNGF-beta in the milk reached 196.8 mg/l. The biological activity of the recombinant hNGF-beta, compared with the commercial hNGF-beta, was tested using PC12 cells. The results demonstrate that instilling recombinant adenovirus directly into the mammary gland of goat is an efficient approach to producing a large quantity of hNGF-beta.
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