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논문 기본 정보

자료유형
학술저널
저자정보
Jang, Hoon (Regenerative Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology) Jang, Won-Gu (Regenerative Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology) Kim, Dong Un (Regenerative Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology) Kim, Eun-Jung (Regenerative Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology) Hwang, Sung Soo (Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration) Oh, Keon Bong (Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration) Lee, Jeong-Woong (Regenerative Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제36권 제3호
발행연도
2012.1
수록면
207 - 212 (6page)

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The shortage of human organs for transplantation has induced the research on the possibility of using animal as porcine. However, pig to human transplantation as known as xeno-transplantation has major problem as immunorejection. Recently, the solutions of pig to human xenotransplantation are commonly mentioned as having a genetically modification which include alpha 1, 3 galatosyl transferase knockout (GTKO) and immune-suppressing gene transgenic model. Unfortunately, the expression level of transgenic gene is very low activity. Therefore, development of gene overexpression system is the most urgent issue. Also, the tissue specific overexpression system is very important. Because most blood vessels are endothelial cells, establishment of the endothelial-specific promoter is attractive candidates for the introduction of suppressing immunorejection. In this study, we focus the ICAM2 promoter which has endothelial-specific regulatory region. To detect the regulatory region of ICAM2 promoter, we cloned 3.7 kb size mini-pig ICAM2 promoter. We conduct serial deletion of 5' flanking region of mini-pig ICAM2 promoter then selected promoter size as 1 kb, 1.5 kb, 2 kb, 2.5 kb, and 3 kb. To analyze promoter activity, luciferase assay system was conducted among these vectors and compare endothelial activity with epithelial cells. The reporter gene assay revealed that ICAM2 promoter has critical activity in endothelial cells (CPAE) and 1 kb size of ICAM2 promoter activity was significantly increased. Taken together, our studies suggest that mini-pig ICMA2 promoter is endothelial cell specific overexpression promoter and among above all size of promoters, 1 kb size promoter is optimal candidate to overcome the vascular immunorejection in pig to human xenotransplantation.

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