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Sprague-Dawley (SD) 大鼠原代视网膜 Müller 细胞的分离和培养
Sprague-Dawley (SD) 大鼠原代视网膜 Müller 细胞的分离和培养
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Isolation and Culture of Primary Retinal Müller Cells from Sprague-Dawley (SD) Rats

Sprague-Dawley (SD) 大鼠原代视网膜 Müller 细胞的分离和培养

Full Text
899 Views
07:41 min
June 17, 2025

DOI: 10.3791/68129-v

Yunhua Tang1,2,3,4, Yue Sun1,2,3, Yongqi Mao1,2,3, Wenyan Peng1,2,3, Wenfeng Zhang1,2,3, Fuwen Zhang1,2,3,5

1Eye School of Chengdu University of TCM,Chengdu University of Traditional Chinese Medicine, 2Key Laboratory of Sichuan Province Ophthalmopathy Prevention & Cure and Visual Function Protection with TCM Laboratory, Eye School of Chengdu University of TCM,Chengdu University of Traditional Chinese Medicine, 3Retinal Image Technology and Chronic Vascular Disease Prevention & Control and Collaborative Innovation Center, Eye School of Chengdu University of TCM,Chengdu University of Traditional Chinese Medicine, 4Department of Ophthalmology,Ziyang Hospital of Traditional Chinese Medicine, 5Department of Ophthalmology, Ineye Hospital of Chengdu University of TCM,Chengdu University of Traditional Chinese Medicine

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Please note that some of the translations on this page are AI generated. Click here for the English version.

本文介绍了从新生 Sprague-Dawley (SD) 大鼠中分离原代视网膜 Müller 细胞的详细方案。该程序包括眼球摘除术、视网膜组织解剖、细胞提取和鉴定以及后续细胞培养的关键考虑因素。

该协议描述了从 Sprague-Dawley SD 大鼠中分离和培养原代视网膜穆勒细胞,这可以帮助科学界的视网膜研究。该协议涵盖、视网膜夹层、CI 提取和鉴定以及关键控制注意事项。该协议建立了一种高效、标准化且具有成本效益的方法,用于从合法的 SD 机架中提取和回收 RMC。RMC模型可用于模拟糖尿病、正常等病理状况,辅助药物效果。

[旁白]首先,将 D-Hank 的溶液倒入两个 10 厘米的玻璃培养皿中。对新生SD大鼠实施安乐死和消毒后,将其放在无菌弯曲的培养皿上。使用牙镊子沿着睑裂撕裂眼睑皮肤,露出大鼠的眼球。将无齿镊子打开并平行于睑裂以压下眼眶。一旦到达视神经并暴露眼球,合上镊子以提起并取出眼球。现在将眼球放入装有 D-Hank 溶液的玻璃培养皿中。冲洗眼球并将其转移到另一个装有新鲜 D-Hank 溶液的盘子中。然后使用弯曲的眼科微型镊子,轻轻固定角膜和视神经之间的区域,以暴露角膜。使用微型角膜剪刀刺穿角膜巩膜交界处,并沿角膜缘以圆形方式切割。在松开镊子并在视神经和巩膜的交界处重新夹紧之前,做两个长度约为两毫米的对称巩膜切口。然后,使用第二个镊子轻轻按压视神经根部附近,将压力引导至角膜视神经界面。当晶状体组织出现时,小心地将其取下并继续按压,直到视网膜组织出现。使用镊子,将分离的视网膜组织转移到另一个无菌培养皿中。打开培养皿盖,用吸头一毫升的移液器将视网膜组织上下移液约15次,将其打碎成小块。然后,将组织与一毫升0.25%胰蛋白酶在37摄氏度下孵育五分钟。从培养箱中取出培养皿并将其放在干净的工作台上。加入两毫升完全培养基,轻轻移液以停止消化。现在通过 300 目尼龙筛网将细胞悬液过滤到 15 毫升离心机中。用准备好的PBS清洗培养皿并收集剩余的悬浮液。然后在室温下以 878 G 旋转试管五分钟。离心后,吸出并弃去上清液。将沉淀重悬于两毫升完全培养基中,并再次以 878 G 离心五分钟以纯化细胞。弃去上清液后,将细胞重悬于两毫升完全培养基中。取一个装有三毫升完全培养基的T25烧瓶,加入一毫升细胞悬液。在将烧瓶放入培养箱之前,以十字模式摇动烧瓶。孵育 48 小时后,将烧瓶从培养箱中取出并将其放在洁净的工作台上。弃去用过的培养基,用一毫升PBS洗涤细胞粘附表面3次,PBS含有1%青霉素和链霉素。然后加入五毫升新鲜的完全培养基,继续孵育,直到细胞汇合度超过90%。用一毫升含有1%青霉素链霉素的PBS洗涤细胞三次。然后将细胞与一毫升0.25%胰蛋白酶EDTA溶液孵育1分30秒。现在,在倒置显微镜下观察烧瓶。当细胞呈圆形、分离并开始漂浮时,向烧瓶中加入两毫升完全培养基以终止消化。然后使用移液器吸出细胞悬液,并将整个细胞悬液转移到15毫升离心管中。用两毫升含有 1% 青霉素链霉素的 PBS 冲洗烧瓶壁,并将其添加到同一管中。在室温下以 878 G 离心管五分钟。弃去上清液并将细胞沉淀重悬于适当体积的完全培养基中。最后,根据需要以一比二或一比三的比例传代细胞。第二代视网膜穆勒细胞或RMC表现出星形或纺锤形形态,具有圆形或椭圆形细胞核和丰富的细胞质。 苏木精和伊红染色显示梭形和星形细胞,具有丰富的粉红色细胞质和位于中央的椭圆形细胞核,通过细丝状结构相互连接。RMCs的免疫荧光染色显示,在标记谷氨酰胺合成酶和水通道蛋白-4的细胞中发出强烈的红色荧光,CRALBP、Kir4.1和波形蛋白发出亮绿色荧光。NeuN,免疫荧光分析未检测到阴性对照,证实了RMC分离的特异性。流式细胞术分析显示,98.7%的细胞谷氨酰胺合成酶呈阳性,97%的细胞CRALBP呈阳性,表明RMCs的纯度很高。

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