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http://dx.doi.org/10.12750/JET.2017.32.3.73

Development of α1,3-galactosyltransferase Inactivated and Human Membrane Cofactor Protein Expressing Homozygous Transgenic Pigs for Xenotransplantation  

Lee, Gunsup (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Park, Sang Hyoun (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Lee, Haesun (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Ji, Soo-Jeong (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Lee, Joo Yung (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Byun, Sung-June (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Hwang, Seongsoo (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Kim, Kyung Woon (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Ock, Sun A (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Oh, Keon Bong (Animal Biotechnology Division, National Institute of Animal Science, RDA)
Publication Information
Journal of Embryo Transfer / v.32, no.3, 2017 , pp. 73-79 More about this Journal
Abstract
Transplantation is considered to be a very useful approach to improve human welfare and to prolong life-span. Heterologous organ transplantation using pig organs which are similar to human beings and easy to make mass-production has known as one of the alternatives. To ensure potential usage of the pig organ for transplantation application, it is essentially required to generate transgenic pig modifying immuno-related genes. Previously, we reported production of heterozygous ${\alpha}1,3$-galactosyltransferase (GalT) knock-out and human membrane cofactor protein (MCP) expressing pig ($GalT^{-MCP/+}$), which is enforced for suppression of hyperacute and acute immunological rejection. In this study, we reported generation of homozygous pig ($GalT^{-MCP/-MCP}$) by crossbreeding $GalT^{-MCP/+}$ pigs. Two female founders gave birth to six of $GalT^{-MCP/-MCP}$, and seven $GalT^{-MCP/+}$ pigs. We performed quantitative real-time PCR, western blot, and flow cytometry analyses to confirm GalT and MCP expression. We showed that fibroblasts of the $GalT^{-MCP/-MCP}$ pig do not express GalT and its product Gal antigen, while efficiently express MCP. We also showed no expression of GalT, otherwise expression of MCP at heart, kidney, liver and pancreas of transgenic pig. Taken together, we suggest that the $GalT^{-MCP/-MCP}$ pig is a useful candidate to apply xenotransplantation study.
Keywords
Xenotransplantation; ${\alpha}1,3$-Galactosyltransferase; Membrane cofactor protein; Pig;
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