Production of α-1, 3-galactosyltransferase knockout pigs by nuclear transfer cloning

L Lai, D Kolber-Simonds, KW Park, HT Cheong… - Science, 2002 - science.org
L Lai, D Kolber-Simonds, KW Park, HT Cheong, JL Greenstein, GS Im, M Samuel, A Bonk…
Science, 2002science.org
The presence of galactose α-1, 3-galactose residues on the surface of pig cells is a major
obstacle to successful xenotransplantation. Here, we report the production of four live pigs in
which one allele of the α-1, 3-galactosyltransferase locus has been knocked out. These pigs
were produced by nuclear transfer technology; clonal fetal fibroblast cell lines were used as
nuclear donors for embryos reconstructed with enucleated pig oocytes.
The presence of galactose α-1,3-galactose residues on the surface of pig cells is a major obstacle to successful xenotransplantation. Here, we report the production of four live pigs in which one allele of the α-1,3-galactosyltransferase locus has been knocked out. These pigs were produced by nuclear transfer technology; clonal fetal fibroblast cell lines were used as nuclear donors for embryos reconstructed with enucleated pig oocytes.
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