Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Chitosan-alginate Gel Modified Poly (L-Lactic-co-ε-Caprolactone) (PLCL) as a Scaffold for Cartilage Tissue Engineering

변형된 키토산 알지네이트 겔 poly (L-Lactic-co-ε-Caprolactone) 지지체의 연골 조직 재생 평가

  • Sutradhar, Bibek Chandra (Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungbuk National University) ;
  • Hwang, Yawon (Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungbuk National University) ;
  • Choi, Seokhwa (Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungbuk National University) ;
  • Kim, Gonhyung (Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungbuk National University)
  • ;
  • 황야원 (충북대학교 수의과대학 수의외과학 교실) ;
  • 최석화 (충북대학교 수의과대학 수의외과학 교실) ;
  • 김근형 (충북대학교 수의과대학 수의외과학 교실)
  • Accepted : 2015.04.09
  • Published : 2015.06.30
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Abstract

This study was designed in the fabricated poly (L-Lactic-co-${\varepsilon}$-Caprolactone) (PLCL) scaffold using chitosan-alginate hydrogel, which would be more suitable to maintain the biological and physiological functions continuing three dimensional spatial organizations for chondrocytes. As a scaffold, hydrogels alone is weak at endure complex loading within the body. In this study, we made cell hybrid scaffold constructs with poly (L-Lactic-co-${\varepsilon}$-Caprolactone) (PLCL) scaffold and hydrogels to make a three-dimensional composition of cells and extracellular matrix, which would be a mimic of a native cartilage. Using a particle leaching technique with NaCl, we fabricated a highly-elastic scaffold from PLCL with 85% porosity and $300-500{\mu}m$ pore size. A mixture of bovine chondrocytes and chitosan-alginate gel was seeded and compared with alginate as a control on the PLCL scaffold. The cell maturation, proliferation, extracellular matrix synthesis, glycosaminoglycans (sGAG) production and collagen type-II expressions were better in chondrocytes seeded in chitosan-alginate hydrogel than in alginate only. These results indicate that chondrocytes with chitosan-alginate gel on PLCL scaffolds provide an appropriate biomimetic environment for cell proliferation and matrix synthesis, which could successfully be used for cartilage repair and regeneration.

본 연구는 키토산 알지네이트 수화겔을 사용하여 제작된 연골세포의 3차원 구조를 유지하며 생물학적, 생리학적인 기능을 유지하는데 적합한 poly (L-Lactic-co-${\varepsilon}$-Caprolactone) (PLCL) 지지체의 효과에 대한 연구이다. 체내에서 수화겔은 단독으로 지지체 역할을 하기에는 부하를 견디기에 약하다. 이에 본 연구에서는 연골세포와 유사한 세포, 세포외 기질의 3차원적 구성을 만들기 위해 PLCL 지지체와 수화겔을 사용하여 합성 지지체를 제작하였다. 염화나트륨을 사용한 입자 침출 기법으로 85%의 다공성, $300-500{\mu}m$ 크기의 구멍을 가진 탄성력 높은 지지체를 제작하였다. 소의 연골세포와 키토산 알지네이트 겔 혼합물이 PLCL 지지체에 적용되었고 대조군의 알지네이트와 비교 연구하였다. 키토산 알지네이트 수화겔과 연골세포가 혼합된 경우에 알지네이트 단독 사용에 비해 세포 성숙, 증식, 세포외 기질의 합성, sGAG 생성과 II 형 콜라겐의 발현 등의 효과가 좋은 것으로 확인되었다. 본 연구 결과를 통해 PLCL 지지체에 연골세포와 키토산 알지네이트 겔 혼합물을 적용할 경우 세포 증식과 기질의 합성에 적합한 환경을 만들 수 있으며 연골의 복구와 재생에 효과적으로 사용될 수 있을 것으로 기대된다.

Keywords

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