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应用组织工程方法构建瘢痕疙瘩模型

Keywords: 组织工程学,瘢痕疙瘩,成纤维细胞

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Abstract:

目的应用组织工程方法构建人瘢痕疙瘩动物模型,并探讨采用这一模型进行瘢痕疙瘩临床和实验室研究的可行性。方法对人体瘢痕疙瘩组织中成纤维细胞进行原代培养,将体外培养第6~8代的成纤维细胞,接种到培养液预湿的聚乳酸-乙醇酸共聚物(plga)支架,形成体外复合体,将复合体转移至旋转式细胞培养系统容器内培养;1周后种植在20只雌性裸鼠皮下,同体两侧对照,第4、8、16、24周取材,对获得的瘢痕疙瘩组织进行组织学评价。结果术后裸鼠全部成活。复合体移植24w后,在裸鼠皮下形成的瘢痕疙瘩保持了其原有的胶原形态,在电镜下可观察到植入物内同时存在纤维细胞和成纤维细胞,成纤维细胞内可见丰富的粗面内质网,细胞特性保持不变。结论plga与瘢痕疙瘩成纤维细胞具有较好的亲和性,plga-瘢痕疙瘩成纤维细胞复合体在裸鼠体内可形成瘢痕疙瘩,值得进一步开发研制。

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