Batista RITP, Melo CHS, Souza-Fabjan JMG, Teixeira DIA, Melo LM, Freitas VJF. Phenotypic features of first-generation transgenic goats for human granulocyte-colony stimulation factor production in milk.
Biotechnol Lett 2014;
36:2155-62. [PMID:
24975728 DOI:
10.1007/s10529-014-1588-0]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 06/12/2014] [Indexed: 12/20/2022]
Abstract
Human granulocyte-colony stimulating factor (hG-CSF) is a hematopoietic growth factor used in neutropenic patients. It is produced in transgenic bacteria or cultured mammalian cells. As an alternative, we now show that hG-CSF can be expressed in the mammary gland of first-generation (F1) transgenic goats during induced lactation. Despite lower milk production, transgenic females presented a similar milk composition (fat, protein and lactose) when compared to non-transgenic (p > 0.05) ones. The mean concentration (±SD) of recombinant hG-CSF in milk during lactation was 360 ± 178 µg ml(-1). All clinical parameters, as well as kidney and liver function, indicated that F1 transgenic goats were healthy. Additionally, no ectopic hG-CSF expression was detected in studied tissues of F1 transgenic males. Thus, F1 hG-CSF-transgenic goats can express the recombinant protein in milk at quantities compatible with their use as bioreactors in a commercial-scale protein-production program.
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