Effects of Donor Cell Treatments on the Production of Transgenic Cloned Piglets

공여세포 처리 조건이 형질전환 복제돼지 생산에 미치는 영향

  • 권대진 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 곽태욱 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 오건봉 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 김동훈 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 양병철 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 임기순 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 김진회 (건국대학교 동물생명과학대학) ;
  • 박진기 (농촌진흥청 국립축산과학원 동물바이오공학과) ;
  • 황성수 (농촌진흥청 국립축산과학원 동물바이오공학과)
  • Received : 2011.08.15
  • Accepted : 2011.08.22
  • Published : 2011.09.30

Abstract

This study was conducted to investigate the effects of donor cell treatments on the production of transgenic cloned piglets. Ear fibroblast cell obtained from NIH MHC Inbred minipig was used as control. The GalT knock-out/CD45 knock-in (GalT/CD46) transgenic cell lines were established and used as donor cells. The reconstructed GalT/CD46 embryos were surgically transferred into oviduct of naturally cycling surrogate sows (Landrace ${\times}$ Yorkshire) on the second day of standing estrus. Unlike control (1.2 kV/cm, 75.4%), the fusion rate of the GalT/CDl6 donor cells was significantly higher in 1.5 kV/cm, (84.5%) than that of 1.25 kV/cm, (20.2%) (p<0.01). When the number of the transferred embryos were more than 129, the pregnancy and delivery rates were increased to 13/20 (65%) and 5/20 (25%) compared to less then 100 group [1/6 (16.7%) and 0/6 (0%)], respectively. To analyze the effect of donor cell culture condition on pregnancy and delivery rates, the GalT/CD46 donor cells were cultured with DMEM or serum reduced medium. In serum reduced medium group, the pregnancy and delivery rates were improved to 8/12 (66.7%) and 5/12 (41.7%) compared to DMEM group [3/7 (42.9%) and 0/7 (0%)], respectively. In conclusion, it can be postulated that an appropriate fusion condition and culture system is essential factors to increase the efficiency of the production of transgenic cloned piglets.

Keywords

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