alexa Advances in farm animal transgenesis.
Genetics & Molecular Biology

Genetics & Molecular Biology

Cloning & Transgenesis

Author(s): Kues WA, Niemann H

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Abstract The first transgenic livestock were produced in 1985 by microinjection of foreign DNA into zygotic pronuclei. This was the method of choice for more than 20 years, but more efficient protocols are now available, including somatic cell nuclear transfer and lentiviral transgenesis. Typical applications include carcass composition, lactational performance and wool production, as well as enhanced disease resistance and reduced environmental impact. Transgenic farm animal production for biomedical applications has found broad acceptance. In 2006 the European Medicines Agency (EMA) approved commercialization of the first recombinant pharmaceutical protein, antithrombin, produced in the mammary gland of transgenic goats. As the genome sequencing projects for various farm animal species are completed, it has become feasible to perform precise genetic modifications employing the emerging tools of lentiviral vectors, small interfering ribonucleic acids, meganucleases, zinc finger nucleases and transposons. We anticipate that genetic modification of farm animals will be instrumental in meeting global challenges in agricultural production and will open new horizons in biomedicine. Copyright © 2011 Elsevier B.V. All rights reserved. This article was published in Prev Vet Med and referenced in Cloning & Transgenesis

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