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논문 기본 정보

자료유형
학술저널
저자정보
Zheng, Zhen-Yu (The College of Animal Husbandary and Veterinary, Henan Agricultural University) Lee, Hyo-Sang (Center for Regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology [KRIBB]) Oh, Keon-Bong (Center for Regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology [KRIBB]) Koo, Deog-Bon (Center for Regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology [KRIBB]) Han, Yong-Mahn (Department of Biological Sciences, Korea Advanced Institute of Science and Technology [KAIST]) Lee, Kyung-Kwang (Center for Regenerative Medicine, Korea Research Institute of Bioscience and Biotechnology [KRIBB])
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제32권 제1호
발행연도
2008.1
수록면
45 - 49 (5page)

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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.

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