Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Sex Steroid Hormones on Proliferation and Differentiation of Preadipocytes from Female and Male Pigs

스테로이드 성호르몬이 암, 수 돼지 지방전구세포의 증식과 분화에 미치는 영향

  • Kim, Won-Young (Department of Animal Science, Chungbuk National University) ;
  • Chung, Chung-Soo (Department of Animal Science, Chungbuk National University)
  • 김원영 (충북대학교 농업생명환경대학 축산학과) ;
  • 정정수 (충북대학교 농업생명환경대학 축산학과)
  • Received : 2010.01.15
  • Accepted : 2010.02.17
  • Published : 2010.02.28
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Abstract

The current study was undertaken to determine the effects of sex steroid hormones (estrogen, testosterone and 19-nortestosterone) on proliferation and differentiation of preadipocytes of female and male pigs. The preadipocytes were isolated from the backfat of new-born female and male pigs by collagenase digestion and cultured in the $CO_2$ incubator. The concentration of $10^{-7}M$ and 10-6M sex steroid hormones were treated to the cultured preadipocytes. Regarding the effects on preadipocytes proliferation, high concentration ($10^{-6}M$) of all the three hormones increased proliferation of female preadipocytes,and only estrogen and testosterone increased proliferation of male preadipocytes. Regarding the effects on preadipocyte differentiation, all the three hormones increased differentiation of pig preadipocytes, regardless of hormone concentrations and sex of preadipocytes. The degree of stimulation of cell differentiation by sex steroid hormones was greater than that of cell proliferation.

본 연구는 스테로이드 성호르몬인 에스트로겐(estrogen), 테스토스테론(testosterone) 및 노르테스토스테론(19-nortestosterone)이 암, 수 돼지 지방전구세포의 증식과 분화에 미치는 영향을 구명하기 위해서 수행하였다. 지방전구세포는 암, 수 갓 난 돼지의 등지방 조직을 떼어 내어 collagenase를 처리한 후 분리해서 $CO_2$ 배양기에서 배양했다. 세포 배양 중에 $10^{-7}M$와 $10^{-6}M$의 스테로이드 성호르몬을 처리했다. 먼저 지방전구세포의 증식에 미치는 영향을 보면, 암퇘지에서 분리한 지방전구세포의 증식을 높은 농도의 스테로이드 성호르몬 모두가 촉진했다. 수퇘지에서 분리한 지방전구세포의 증식은 에스트로겐과 테스토스테론만이 촉진했다. 지방세포의 분화에 미치는 작용을 보면, 세 호르몬 모두, 농도에 관계없이 암수 성별에 관계없이 지방전구세포의 분화를 촉진했다. 촉진 정도는 증식보다 분화에 더 크게 나타났다.

Keywords

References

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