The Effect of the Plasma Treatment on PLGA Scaffold for Adhesion and Chondrogenic Differentiation of Human Adipose-derived Stromal Cells

인체지방유래 간질세포의 부착 및 연골분화유도를 위한 PLGA 지지체의 플라즈마 처리 효과

  • Dong, Chun Ji (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea) ;
  • Jun, Young Joon (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea) ;
  • Cho, Hyun Mi (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea) ;
  • Oh, Deuk Young (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea) ;
  • Han, Dong Keun (Biomaterials Research Center, Korea Institute of Science and Technology) ;
  • Rhie, Jong Won (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea) ;
  • Ahn, Sang Tae (Department of Plastic Surgery, College of Medicine, The Catholic University of Korea)
  • 동춘희 (가톨릭대학교 의과대학 성형외과학교실) ;
  • 전영준 (가톨릭대학교 의과대학 성형외과학교실) ;
  • 조현미 (가톨릭대학교 의과대학 성형외과학교실) ;
  • 오득영 (가톨릭대학교 의과대학 성형외과학교실) ;
  • 한동근 (한국과학기술연구원 생체재료연구센터) ;
  • 이종원 (가톨릭대학교 의과대학 성형외과학교실) ;
  • 안상태 (가톨릭대학교 의과대학 성형외과학교실)
  • Received : 2005.11.29
  • Published : 2006.01.10

Abstract

High-density micromass culture was needed to take three dimensions culture with ASCs(adipose derived stromal cells) and chondrogenesis. However, the synthetic polymer has hydrophobic character and low affinity to cells and other biomolecules. Therefore, the surface modification without changes of physical and chemical properties is necessary for more suitable condition to cells and biomolecules. This study was performed to investigate the effect of surface modification of poly (lactic-co-glycolic acid)(PLGA) scaffold by plasma treatment (P(+)) on the adhesion, proliferation and chondrogenesis of ASCs, and not plasma treatment (P(-)). ASCs were isolated from human subcutaneous adipose tissue obtained by lipectomy and liposuction. At 1 hour 30 minutes and 3days after cell seeding onto the P(-) group and the P(+) group, total DNA amount of attached and proliferated ASCs markedly increased in the P(+) group (p < 0.05). The changes of the actin under confocal microscope were done for evaluation of cellular affinity, at 1 hour 30 minutes, the shape of the cells was spherical form in all group. At 3rd day, the shape of the cells was fiber network form and finely arranged in P(+) group rather than in P(-) group. RT-PCR analysis of cartilage-specific type II collagen and link protein were expressed in 1, 2 weeks of induction. Amount of Glycoaminoglycan (GAG) markedly increased in P(+) group(p < 0.05). In a week, extracellular matrix was not observed in the Alcian blue and Safranin O staining. However in 2 weeks, it was observed that sulfated proteoglycan increased in P(+) group rather than in P(-) group. In conclusion, we recognized that plasma treatment of PLGA scaffold could increase the hydrophilic property of cells, and provide suitable environment for high-density micromass culture to chondrogenesis

Keywords

Acknowledgement

Supported by : 과학기술부

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