Journal of Embryo Transfer (한국수정란이식학회지)

The Korean Society of Embryo Transfer (한국수정란이식학회)
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Hormonal Changes in Cultured Medium on In Vitro Culture of Bovine Oviduct Epithelial Cells (BOEC) Supplemented with UK-4

소 난관 상피 세포의 체외 배양시 IL-4의 첨가에 의한 배양액내 호르몬 변화

  • Choi, S.H. (National Livestock Research Institute, RDA) ;
  • Cho, S.R. (National Livestock Research Institute, RDA) ;
  • Han, M.H. (National Livestock Research Institute, RDA) ;
  • Kim, H.J. (National Livestock Research Institute, RDA) ;
  • Son, D.S. (National Livestock Research Institute, RDA) ;
  • Sang, B.D. (National Livestock Research Institute, RDA) ;
  • Park, C.K. (Kangwon National University)
  • Published : 2006.12.31
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Abstract

This study was conducted to investigate the hormonal changes in cultured medium during in vitro culture of bovine oviduct epithelial cells (BOEC) supplemented with interleukin (IL)-4 of 0.001, 0.01, 0.1 or 1 ng/ml. BOEC were collected from the oviduct and washed 3 times with 1% antibiotic-mycotic-DMEM medium and cultured at $39^{\circ}C$, 5% $CO_2$, 95% air for 24$\sim$120 hrs. The cultured media were analyzed hormonal changes with hormonal analyzing kit (progesterone (P4), estradiol (E2) : Perkin Elmer, USA) and Transforming growth factor (TGF)-$\beta$ with Eliza kit (Promega, USA). The production of P4 in 0.001 IL-4 was increased as the culture time increased. P4 production was significantly higher in the medium cultured for 120 hrs than 24 hrs (P<0.05). P4 production in 0.01 ng/ml group was similar to that of 0.001 ng/ml. The production of E2 in 0.001 and 0.01 ng/ml groups were increased to 72 hrs like P4 production and showed significantly different between the culture periods (P<0.05). After the culture for 96 hrs, P4 and E2 production were increased to 96 hrs, but decreased at 120 hrs. The production of TGF-$\beta$ showed no changes according to culture period or supplementation of IL-4. In conclusion, the supplementation of IL-4 can increase the production of P4 and E2 and might have important role for the successful pregnancy in bovine.

본 연구는 소 난관 상피 세포를 채취 체외 배양을 실시하고, 이에 착상과 관련이 있은 IL-4를 첨가하여 배양액내의 임신에 관련된 호르몬들(P4, E2, TGF-$\beta$)의 변화를 관찰함으로써, 소 난관 상피 세포와 착상과의 관계를 구명하고자 실시하였으며, 그에 따른 결과는 다음과 같다. 소 난관 상피 세포의 체외 배양시 IL-4 첨가에 의한 배양액내의 P4의 생산은 0.001 ng/ml의 IL-4를 첨가한 배양액의 P4의 농도는 배양 시간이 경과할수록 증가하는 경향을 보였으며, 24시간보다 120시간에서는 약 2배의 생산을 보여 유의적인 차이를 나타냈다(P<0.05). 0.01 ng/ml의 경우에도 0.001의 경우와 유사한 경향을 보였으나, 0.001 ng/ml의 경우보다는 다소 생산량이 낮았다. 0.1이나 1 ng/ml의 경우는 배양 시간에 따른 생산량은 다른 두 가지의 농도와 같이 배양시간 96시간까지는 증가하였으나, 배양 시간 120시간에서는 감소하였다. 소 난관 상피 세포의 체외 배양시 IL-4 첨가에 의한 배양액내의 E2의 생산은 0.001, 0.01 ng/ml 첨가시는 P4의 경우와 같이 배양 시간 72시간까지 배양 시간에 따라 생산량이 증가하여 유의적인 차이를 나타내었으며(P<0.05), 0.1 및 1 ng/ml의 경우는 배양 시간 96시간까지 증가하는 경향을 보였다. 그러나 배양 시간 120 시간에는 IL-4의 첨가 농도에 관계없이 배양 시간 24시간째의 생산량과 유사한 경향을 나타냈다. 소 난관 상피 세포의 체외 배양시 IL-4 첨가에 의한 배양액 내 TGF-$\beta$의 생산은 IL-4의 첨가 농도 및 배양 시간에 대하여 차이를 나타내지 않았으며, 유의성도 나타나지 않았다. 배양 초기에 비하여 배양시간 120시간에는 약간 생산이 낮아지는 것으로 나타나 IL-4에 의한 TGF-$\beta$의 생산은 배양 시간 96이후에는 활성이 저하하는 것으로 나타났다. 이상의 결과로 소 난관 상피 세포의 체외 배양시 IL-4 첨가는 P4 및 E2의 생산에 영향을 미치는 것으로 나타났으며, TGF-$\beta$의 생산에는 영향을 미치지 않는 것으로 나타나, IL-4는 소의 임신의 성립에 중요한 역할을 하며, 난관 상피 세포 이외의 자성 생식 기도 내에 있어서 IL-4와 관련된 기전에 대하여 더 많은 연구가 요구된다.

Keywords

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