Abstract
We describe isologous promoter replacement as an approach to permit high level expression of human hemoglobin in transgenic swine. We linked the human β globin genomic coding region to the porcine β globin promoter and used this fusion gene in an expression construct containing the human β locus control region and the human a and e genes to produce transgenic pigs. The highest level of expression was 24% human (32g/liter) and 30% human α/pig β hybrid (40g/liter) hemoglobin in one transgenic pig. This pig was bred to a non–transgenic animal resulting in the transmission of high level human hemoglobin expression to 5 of 12 progeny.
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Sharma, A., Martin, M., Okabe, J. et al. An Isologous Porcine Promoter Permits High Level Expression of Human Hemoglobin in Transgenic Swine. Nat Biotechnol 12, 55–59 (1994). https://doi.org/10.1038/nbt0194-55
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DOI: https://doi.org/10.1038/nbt0194-55
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