摘要
目的:建立改进大鼠气道平滑肌细胞(ASMC)的体外培养方法,为相关研究提供实验材料。方法:将组织块连续贴壁进行细胞原代培养,胰酶消化传代培养,差速贴壁进行细胞纯化,形态学及免疫细胞化学染色法进行细胞鉴定。MTT法检测PDGF-BB诱导的ASMC增殖。结果:成功培养大鼠ASMC,以改良组织块消化法最为理想。第四代平滑肌细胞纯度可达95%以上。相差显微镜下培养细胞呈典型“峰谷状”生长。免疫荧光化学染色显示特异性平滑肌肌动蛋白阳性表达。随着PDGF浓度的升高(2-80ng/ml),MTT比色A490值呈上升趋势。与对照组相比较,80ng/ml、20ng/ml PDGF—BB组有统计学意义(P〈0.01)。结论:改良组织块消化法可缩短培养周期,在充分利用标本的基础上获得大量气道平滑肌细胞。
Objective: To establish an improved cultured model of rat airway smooth muscle cells (ASMC) in vitro. Methods: The primary and transfer cells were cultured by mixed tissue-piece digestion inoculation. The cells were purified by natural passage transfer and differential adhesion. The cells were identified by morphological characteristics and immunocytochemistry. Results: The purity of the fourth passage ASMCs was over 95%. ASMC possessed "peak and valley" characteristics in phase contrast microscope. Immunocytochemical staining with specific mAb against rat SMAα-actin demonstrated these cells as positive. A490 value of ASMC by MTT assay increased with the elevation of PDGF-BB concentration(2-80 ng/ml). Compared with control group, A490 value of 20ng/ml PDGF group and 80ng/ml PDGF group were increased significantly (P 〈0.01). Conclusion: It is a simple and reliable model for obtaining highly purified airway smooth cells by improved tissue-piece digestion inoculation.
出处
《现代生物医学进展》
CAS
2009年第14期2631-2633,2648,共4页
Progress in Modern Biomedicine
基金
广州市教育局科技项目(1007
61041)
广州市科技局课题(2008J1-C261-1)
关键词
气道
平滑肌细胞
大鼠
airway
smooth muscle cell
rat