한국발생생물학회지:발생과생식 (Development and Reproduction)

  • 제14권4호
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  • Pages.233-241
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  • 2010
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  • 2465-9525(pISSN)
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  • 2465-9541(eISSN)
한국발생생물학회 (The Korean Society of Developmental Biology)
권호 표지

사람의 허벅지지방유래 줄기세포의 특성 분석

Characterization of Human Thigh Adipose-derived Stem Cells

  • 허진영 (서울여자대학교 자연과학대학 생명공학과) ;
  • 윤진아 (서울여자대학교 자연과학대학 생명공학과) ;
  • 강현미 (서울여자대학교 자연과학대학 생명공학과) ;
  • 박세아 (서울여자대학교 자연과학대학 생명공학과) ;
  • 김해권 (서울여자대학교 자연과학대학 생명공학과)
  • Heo, Jin-Yeong (Dept. of Biotechnology, College of Natural Science, Seoul Women's University) ;
  • Yoon, Jin-Ah (Dept. of Biotechnology, College of Natural Science, Seoul Women's University) ;
  • Kang, Hyun-Mi (Dept. of Biotechnology, College of Natural Science, Seoul Women's University) ;
  • Park, Se-Ah (Dept. of Biotechnology, College of Natural Science, Seoul Women's University) ;
  • Kim, Hae-Kwon (Dept. of Biotechnology, College of Natural Science, Seoul Women's University)
  • 투고 : 2010.10.30
  • 심사 : 2010.12.18
  • 발행 : 2010.12.31
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초록

사람의지방줄기세포는지방조직내에존재하는 줄기세포로 얻기 쉽고, 골수줄기세포와 유사한 특징을 가지고 있다. 그러나 지방을 추출하는 과정, 공여자의 나이, 체질량, 추출 부위에 따라 세포의 특성이 달라지며, 이질적인 세포군을 얻게 된다. 따라서 본 연구에서는 허벅지 지방에서 유래한 줄기세포 특성 분석 및 중배엽, 내배엽성 세포로의 분화능을 알아보았다. 허벅지 유래 줄기세포는 골수줄기세포와 유사한 섬유아세포와 유사한 모양을 보였으며, 체외에서 56.5번의 분열을 하였고, 약 $5{\times}10^{22}$개의 세포를 얻을 수 있었다. 이들은 SCF, Oct4, nanog, vimentin, CK18, FGF5, NCAM, Pax6, BMP4, HNF4a, nestin, GATA4, HLA-ABC, HLA-DR과 같은 유전자를 발현하였으며, Oct4, Thy-1, FSP, vWF, vimentin, desmin, CK18, CD54, CD4, CD106, CD31, a-SMA, HLA-ABC 등과 같은 단백질을 발현하였다. 또한 이들은 지방, 골, 연골 세포와 같은 중배엽성 세포로 분화하였고, 더욱이 인슐린 분비세포와 같은 내배엽성 세포로도 분화하였다. 결론적으로, 사람의 허벅지 유래 줄기세포는 골수 줄기세포와 유사하게 체외에서 증식이 가능하였으며, 유전자 및 단백질 발현 패턴을 가지고 있었으며, 다양한 세포로 분화 가능하였다. 이러한 결과로 미루어 보아 허벅지 지방유래 줄기세포는 골수 줄기세포를 대체할 수 있는 세포치료제의 재료가 될 수 있을 것으로 사료된다.

Human adipose stem cells are an abundant, readily available population of multipotent progenitor cells that reside in adipose tissue and these cells have characteristics very similar to bone marrow mesenchymal stromal cells (BMMSCs). However, liposuction procedure, donor age, body mass index, and harvesting sites might generate differences in the initial cell population and the preparations are a heterogeneous mixture of precursors with different subsets. Therefore, in this study, we investigated the characteristics of human thigh adipose stem cells and the differentiation potential into mesodermal and endodermal lineage. Thigh adipose stem cells maintained fibroblast-like morphology similar to BM-MSCs and they underwent average 56.5 doublings and produced $5{\times}10^{22}$ cells. These cells expressed SCF, Oct4, nanog, vimentin, CK18, FGF5, NCAM, Pax6, BMP4, HNF4a, nestin, GATA4, HLA-ABC, and HLA-DR genes at p3 and they also expressed Oct4, Thy-1, FSP, vWF, vimentin, desmin, CK18, CD54, CD4, CD106, CD31, a-SMA, HLA-ABC proteins. Moreover, they could differentiate into mesodermal lineage cells such as adipocyte, osteoblast and chondrocyte. In addition, they also differentiated into insulin secreting cells in our culture condition. In conclusion, human thigh adipose stem cells retain proliferative potential and expression patterns similar to BM-MSCs and they also differentiate into various cell types. Thus, human thigh adipose stem cells might be useful alternative cell source for clinical application.

키워드

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