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  5. 細胞共培養於聚乳酸-羥基乙酸共聚物微管陣列膜之小直徑血管取代物研製
 
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細胞共培養於聚乳酸-羥基乙酸共聚物微管陣列膜之小直徑血管取代物研製

Other Title
Fabrication of Poly (lactic-co-glycolic acid) (PLGA) Microtube Array Membrane (MTAM) for small diameter vascular graft based on the Co-Culture of Smooth Muscle Cells (SMC) and Human Umbilical Vein Endothelial Cells (HUVEC)
Type
thesis
Date Issued
2017-07-04
Author(s)
許伯戎
Advisor
陳建中
施俊明
Subjects
系所名稱:生醫材料暨組織工程研究所
Description
學位別:碩士
語文別:中文
指導教授:陳建中
共同指導教授:施俊明
口試委員:馮琮涵;鄭財木;周啟雄
中文關鍵字:微管陣列膜、同軸靜電紡絲、聚乳酸-羥基乙酸共聚物、冠狀動脈心臟病、共培養、人造血管
英文關鍵字:Coronary artery disease (CABG), co-axial electrospinning, Microtube Array Membrane (MTAM), co-culture, engineered blood vessel
Abstract
冠狀動脈心臟病是因冠狀動脈狹窄及阻塞造成,臨床上常以經皮冠狀動脈氣球擴張術或冠狀動脈繞道手術治療之。冠狀動脈繞道手術目前優先使用的血管取代物是取自病患本身其他部位之血管,但因許多因素,限制自體血管的使用。然而一般人造血管材料由高分子合成,因其血液相容性低,在植入後易造成血栓或內膜增生情形,使其尺寸上無法應用在小於6毫米管徑之人造血管。本研究以聚乳酸-羥基乙酸共聚物 (PLGA) 高分子聚合物,並以聚乙二醇 (PEG) 做為致孔劑,再以同軸靜電紡絲技術製備高順向奈米多孔化微管陣列膜 (MTAM),經電漿表面處理及塗佈0.5%明膠後將平滑肌細胞 (SMCs) 培養於MTAM管腔內;而人類臍帶靜脈內皮細胞 (HUVECs) 共培養於MTAM表面,並加入結合珠蛋白(α-1)促進HUVECs增生,最後製成具生物降解性且內徑小於6毫米之人造血管。實驗結果顯示,從SEM可觀察出成功製造其高順向之Nano Porous PLGA MTAM,並具有82.7%之優良延伸率。於細胞存活率試驗中,將兩細胞共培養於MTAM七天後,SMCs及HUVECs的細胞存活率為6倍及2.4倍,共培養8週後,SMCs及HUVECs皆隨時間逐漸增加,於MTAM內腔之SMCs具高順向性的排列,其細胞型態也能保持SMCs特有之長條形型態,且提升其耐壓之能力,最高可承受1092.2±175.3 mmHg的壓力,於MTAM表面之HUVECs則能形成單層細胞層,並且具有Tight junctions的型態。最後經兩個月共培養後,PLGA MTAM由分子量分析其降解程度為82%。
URI
https://203.71.86.71/handle/123456789/57753

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