• Preparation of Insulin-Immobilized Polyurethane Films and Their Interaction with Fibroblasts
  • Meng W, Kim WS, Lee DH, Park LS, Kang IK
  • 인슐린을 고정화한 폴리우레탄 막의 제조 및 섬유아세포와의 상호작용
  • 맹만, 김우식, 이동호, 박이순, 강인규
Abstract
Polyurethanes containing L-lysine segments in the main chain (PULL) were synthesized from 4, 4′-diphenymethyl diisocynate, poly(tetramethylene glycol), and z-lysine oligomer as a chain extender. Insulinimmobilized polyurethanes (PULL-In) were prepared by a coupling reaction of PULL surface amino groups with insulins. The amount of immobilized insulin was about 0.30 nmol/cm2, as determined by Bradford method. The interactions of NIH/3T3 fibroblasts with surface-modified PULLs were investigated using 3H-thymidine incoporation and optical microscopy. The cell growth rate on PULL-In film was higher than those on other substrates. The cell proliferation by the immobilized insulin was almost same as that by the free one.

Z-라이신 올리고머를 사슬연장제로 하고 D-다이페닐이소시아네이트와 폴리테트라메틸글리콜을 반응시켜 주사슬에 L-라이신 분절을 함유하는 폴리우레틴 (PULL)을 합성하였다. PULL 표면의 아민기와 인슐린의 공유 결합으로 인슐린 고정화 폴리우레탄 (PULL-In)을 제조하였다. Bradfold법으로 측정한 고정화 인슐린의 양은 약 0.30 nmol/cm2이였다. 3H-thymidine 분석방법과 광학 현미경법으로 NIH/3T3 섬유아세포와 표면 개질된 PULL의 상호작용을 조사하였다. 그 결과 PULL-In 필름 표면에서의 세포 성장 속도는 다른 기질에서보다 높았다. 또한 고정화된 인슐린에서의 세포증식이 배양액에 용해된 인슐린에서와 거의 유사한 특성을 나타내었다.

Keywords: insulin; polyurethane; fibroblasts; surface modification; proliferation

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2004; 28(6): 538-544

    Published online Nov 25, 2004

  • Received on Sep 3, 2004
  • Accepted on Nov 12, 2004