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具有定向結(jié)構(gòu)管狀心肌組織工程支架的構(gòu)建

Fabrication of Oriented Structural Tubular Scaffold With Cardiac Tissue Engineering

作者: 胡京奇  熊卓  張婷  張人佶  顏永年 
單位:清華大學(xué)機(jī)械工程系(北京100084)
關(guān)鍵詞: 組織工程;心肌;支架;定向結(jié)構(gòu) 
分類號:
出版年·卷·期(頁碼):2011·30·3(221-226)
摘要:

心肌組織工程支架是心肌組織工程研究的重要內(nèi)容之一。本文通過模仿天然心肌細(xì)胞外基質(zhì)的材料組成和結(jié)構(gòu)特征,采用“膠原-殼聚糖-黏著”蛋白的材料體系,設(shè)計并應(yīng)用定向凝固后熱致相分離的成形工藝,構(gòu)建具有定向大孔和貫通小孔的管狀心肌組織工程支架。掃面電鏡觀察結(jié)果表明,該心肌組織工程支架具有100μm左右定向大孔和10μm左右貫通小孔的孔隙特征,定向結(jié)構(gòu)取向明顯。生物學(xué)實驗顯示細(xì)胞與支架相容性良好,并可貼附支架沿孔隙生長。本文構(gòu)建的具有定向結(jié)構(gòu)的管狀心肌組織工程支架,具有進(jìn)一步用于組織工程心肌體外構(gòu)建的潛力。

Scaffold is a research focus on myocardial tissue engineering.In this paper,based on the materials and structure of native cardiac extracellular matrix,a tubular cardiac tissue engineering scaffold was fabricated by oriented freezing and thermal induced phase separation processing methods.The scaffold had “collagen-chitosan-glycoprotein” material system and oriented structure.The scanning electron microscope (SEM) photograph showed the oriented big pores were well orientation and had about 100 micrometers diameter.The perforated small pores had about 10 micrometers diameter.The biological assessment result showed the well biocompatibility between the myocardial cells and scaffold and cells grew along the oriented pores.The scaffold proposed was able to be further researched in the myocardial tissue fabrication in vitro.
 

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