Article
  • Biological Evaluation of Bone Marrow-Derived Stem Cells onto Different Wettability by RT-PCR
  • Kim EJ, Park CS, Kim MS, Cho SH, Rhee JM, Lee HB, Khang G
  • 역전사 중합효소 연쇄반응을 이용한 표면 적심성에 따른 골수유래 줄기세포의 생물학적 평가
  • 김은정, 박종수, 김문석, 조선행, 이종문, 이해방, 강길선
Abstract
The adhesion and proliferation of mammalian cells on polymeric biomaterials depend on the surface characteristics such as wettability, chemistry, charge and roughness. In order to recognize the correlation between the adhesion and proliferation of human bone marrow derived stem cells(BMSCs) and surface property, radio frequency generated plasma treatment on low density polyethylene (LDPE) has been carried out. The modified LDPE surfaces were characterized by measuring the static water contact angle. The adhesion and proliferation of cells on LDPE films were characterized by cell counting and reverse transcription-polymerase chain reaction (RT-PCR). The water contact angle of the film surface decreased with plasma treatment time. Proto-oncogenes (c-myc, c-fos) and tumor suppressor gene (p53) showed maximum expression with contact angle of 60 ~ 70 ℃ range of LDPE film. By cell counting, we confirmed that the rate of cell proliferation appeared the higher on the film surface of the contact angle of 60 ~ 70 °. We concluded that the surface wettability is an important role for the growth and differentiation of BMSCs.

고분자 생체재료에서 세포부착과 성장은 재료의 적심성, 화학구조, 표면전하 및 거칠기 등의 표면 성질에 의존한다. 본 연구에서는 저밀도 폴리에틸렌 필름 (LDPE)의 표면 적심성과 골수유래 줄기세포의 증식 및 성장성을 측정하기 위하여 플라즈마 처리를 실시하였으며 개질된 필름 표면의 특성을 조사하였다. 또한 LDPE 필름에서의 세포부착과 증식률은 세포수 관찰과 역전사 중합효소 연쇄반응으로 확인하였다. 표면성질의 하나인 물 접촉각 측정 결과 플라즈마 처리 시간이 길어짐에 따라 필름표면의 접촉각이 감소하였으며 암형성 유전자와 암억제 유전자의 발현률이 60 ~ 70 °사이에서 높음을 확인할 수 있었다. 또한 세포수 관찰을 통해 접촉각이 60 ~ 70 °인 표면에서 세포 증식률이 우수하여 표면성질이 세포의 성장과 분화에 중요함을 확인하였다.

Keywords: LDPE film; plasma treatment; surface wettability; contact angle; proto-oncogene; tumor suppressor gene

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2004; 28(3): 218-224

    Published online May 25, 2004

  • Received on Jan 20, 2004
  • Accepted on Apr 20, 2004