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초록
영어
We have previously produced transgenic (TG) mice expressing the human lactoferrin (hLF), interleukin-10 (hIL-10), and thrombopoietin (hTPO) proteins in the milk. In this study, we examined whether simple crossbreeding between two kids of a single transgenic mouse can produce double transgenics co-expressing two human proteins.. The hLF male, and the hIL-10 male were crossbred with the hIL-10 and hTPO females, and the hTPO female, respectively. PCR analysis for genotyping showed 32%, 23% and 24% double transgenic rates for hLF/hIL-10, hLF/hTPO, and hIL-10/hTPO transgenes, respectively. We analyzed the expression levels of the human proteins from double transgenic mice and compared those with their single transgenic siblings. All double transgenic co-expressed two human proteins at comparable levels to singles', unless hTPO was not co-expressed: for hLF, 1.1 mg/ml in hLF/hIL-10, whereas 0.5 mg/ml in hLF/hTPO; for hIL-10, 4.1 mg/ml in hIL-10/hLF, whereas 1.4 mg/ml in hIL-10/hTPO. Ihe downregulation of hTPO to half level of singles' was observed in double transgenic mice. The possible reason why hTPO co-expressed might lead to down-regulation of another human protein was discussed. These results suggested that double transgenic generated by crossbreeding between two singles' could be useful system for bioreactor.
목차
ABSTRACT INTRODUCTION MATERIALS AND METHODS Generation of F-11 Double-Transgenic Mice Analysis of Expression Level of Transgene by ELISA RESULTS Generation of Double Transgenic Mice Co-Expression in Double transgenic Mice Milk DISCUSSION REFERENCES
키워드
Human IactoferrinHuman TPOHuman Il-10Double transgenic mouse
저자
Zhen-Yu Zheng [ The College of Animal Husbandry and Veterinary, Henam Agricultural University ]
Hyo-Sang Lee [ Center for regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology ]
Keon Bong Oh [ Center for regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology ]
Deog-Bon Koo [ Center for regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology ]
Yong-Mahn Han [ Department of Biological Sciences, Korea Advanced Institute of Science and Technology(KAIST) ]
Corresponding author