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原代心肌细胞培养方法探讨

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3132

邵伟 (山东省千佛山医院 山东济南250014)

周苏宁 邵建华 (山东大学医学院 山东省立医院 山东济南250021)

摘要 探讨培养Wister新生大鼠心肌细胞的可靠方法。采用心肌组织块差别消化结合化学纯化的培养方法,通过倒置显微镜、HE染色、透射电镜、台盼篮、免疫细胞化学,鉴定心肌细胞生长情况及纯度。结果细胞生长迅速、自行搏动,细胞形态完整,细胞内肌丝、线粒体清晰;细胞成活率达94.6%;肌动蛋白(HHF35)经S-P法胞浆呈现棕褐色阳性表达,纯度达96.4%。表明该方法培养的心肌细胞生长迅速、活性好、纯度高。 关键词 心肌细胞; 细胞培养 ;大鼠 Explore a method of neonatal rat myocardial cells in culture ZHOU Suning, SHAO Jianhua. Medical college of Shandong university, the people’s hospital of Shandong province, Jinan 250021, China Abstract To explore a reliable method of neonatal rat myocardial cells in culture. The plots of myocardial tissue from neonatal Wister rat were cultured and purified with the method of differential enzyme and 5-Bromodeoxyuridine-treatment. Microscope, transmission electron microscope, HE stains, Trypan blue stains, immunohistochemical test were determined to identification the cell. The results of myocardial cells grow rapidity, automaticity, shape intact, the cell of filament and mitochondria clearly. The cell viability was up to 94.6% by Trypan blue stains. The cell purity was up to 96.4% by Actin (HHF35)of Streptavidin peroxidase conjunction method. This method of myocardial cells in culture was grown up rapidity, lively well, high purity. Key words Myocardial Cells; Culture; Rat 随着心脏病发病率逐年升高, 有关心肌疾病的研究越来越受到重视,快速、理想的心肌细胞培养是深入研究的前提,为此我们进行了原代心肌 细胞培养 方法的探讨,并对其进行了一系列实验研究,现报道如下。 1材料与方法

1.1 心肌细胞的培养 取24h内Wister大鼠,在其心脏跳动时将心脏取下,小心剪取心室组织,用冰PBS液清洗干净后,将组织反复剪成0.5~1mm3的小块,加2~3滴 细胞培养 液,用吸管轻轻吹打后分次吸取组织块悬液,将其均匀排在75ml培养瓶底壁上,轻轻翻转培养瓶,加入含150ml/L胎牛血清、0.1mmol/L 5-溴脱氧核苷 (5-Bromodeoxyuridine;Brdu)的高糖DMEM 3ml培养液,做好标记置于37℃恒温培养箱中30~40min后,待组织块略干能贴于瓶壁上,再缓慢、轻轻地将培养瓶翻转,使培养液浸泡组织块,继续静止培养。每天小心取出培养瓶置于相差显微镜下进行观察,2h后就可见组织块周边有细胞伸出,1天后周围爬满细胞,3~4天后多数连接成片,可进行传代,用吸管轻吹组织块使其脱落移出,加入0.1%胰蛋白酶1ml,放置倒置显微镜下观察,约3~5min后部分细胞呈圆形,在瓶上做好标记,弃去胰蛋白酶液加入含有0.1mmol/L Brdu培养液5~10ml在标记处反复吹打,计数板计数细胞5×105/ml,根据需要传至培养瓶(板)中培养,多数3~4天后长成致密单层可用于实验。

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