1. Generation of a recloned transgenic cat expressing red fluorescence protein.
- Author
-
Cho SJ, Bang JI, Yu XF, Lee YS, Kim JH, Jeon JT, Yee ST, and Kong IK
- Subjects
- Animals, Cloning, Organism methods, DNA analysis, DNA genetics, DNA Methylation, Embryo Transfer veterinary, Female, Gene Expression, Luminescent Proteins analysis, Microsatellite Repeats, Nuclear Transfer Techniques, Placenta chemistry, Polymerase Chain Reaction, Pregnancy, RNA, Messenger analysis, RNA, Messenger genetics, Red Fluorescent Protein, Animals, Genetically Modified genetics, Cats genetics, Cloning, Organism veterinary, Luminescent Proteins genetics
- Abstract
Somatic cells from a first-generation red fluorescence protein transgenic cat (first RFP TG cat) were used to produce a recloned RFP transgenic cat (Re-RFP TG cat) (Felis catus) that systemically expressed RFP. A total of 281 RFP cloned embryos were transferred into 13 surrogate mothers (mean=21+/-7.7 embryos/recipient). One surrogate cat was diagnosed pregnant (7.7%) and delivered one live kitten. The presence of the RFP gene in the mRNA and genomic DNA of the Re-RFP TG cat was confirmed by polymerase chain reaction analyses, and red fluorescence was detected in its internal organs and placental tissue samples. Analysis of nine feline-specific microsatellite loci confirmed that the Re-RFP TG cat was genetically identical to the donor cat. To test whether results such as normality of offspring and a low cloning success were due to epigenetic modifications, global methylation of placenta from the two first cloned RFP TG cats (77.08% and 82.29%) and the Re-RFP TG cat (76.38%) were compared by bisulfite mutagenesis sequencing analysis. In conclusion, although cloning efficiency was low, we demonstrated the successful use of a cloned first RFP TG cat as a donor cat to produce a Re-RFP TG cat. These results may facilitate future developments in biomedical models for human therapeutic applications., (Copyright 2010 Elsevier Inc. All rights reserved.)
- Published
- 2010
- Full Text
- View/download PDF