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JoVE Encyclopedia of Experiments
Neuroscience
使用荧光激活细胞分选分离小鼠视网膜神经节细胞
使用荧光激活细胞分选分离小鼠视网膜神经节细胞
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Isolating Murine Retinal Ganglion Cells Using Fluorescence-Activated Cell Sorting

使用荧光激活细胞分选分离小鼠视网膜神经节细胞

Protocol
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03:10 min
July 8, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

将

小鼠视网膜放在湿润的细胞过滤器上,并以圆周运动浸渍,以将视网膜细胞与细胞外基质分离。

将过滤器转移到收集管中。

向

过滤器中加入磷酸盐缓冲液和血清溶液以洗涤和收集细胞。

离

心以沉淀细胞。弃去上清液并将细胞重悬于磷酸盐缓冲液和血清溶液中。

添加与细胞上的Fc受体结合的阻断抗体,防止靶抗体的非特异性结合。

接下来,添加荧光标记和未标记的一抗,这些一抗与各种细胞类型上的特定细胞表面标记物结合。

洗涤以去除未结合的抗体。

添加荧光标记的二抗以与未标记的一抗结合。

洗涤以去除未结合的抗体。

进行荧光激活细胞分选或FACS,以捕获标记细胞的不同荧光信号,并从各种视网膜细胞群中分选视网膜神经节细胞。

将多达 12 个视网膜放在用 PBS 和 FBS 润湿的无菌 70 微米尼龙过滤器上,并用 10 毫升注射器柱塞的后端以打圈的方式轻轻浸渍视网膜。当所有细胞都解离后,将过滤器放在聚丙烯收集管上,并使用 P1000 移液器将细胞通过过滤器过滤到收集管中。

用PBS和FBS冲洗过滤器,将洗涤液汇集在收集管中。加入足够的PBS和FBS,使最终体积达到每个视网膜1毫升溶液,并通过离心收集细胞。然后,将沉淀重悬于 PBS 加 FBS 中,每 5 个视网膜浓度为每 1 毫升培养基。接下来,在室温下,每 1 x 106 细胞用 1 微升抗小鼠 CD16/32 抗体阻断每个管中的任何非特异性 FC 受体结合 10 分钟。

在

封闭孵育结束时,将感兴趣的抗体混合物加入细胞中,轻轻移液,在避光的冰上孵育30分钟。然后,在4毫升的PBS和FBS最终体积中洗涤细胞两次。用适当的二抗在避光的冰上再标记细胞 30 分钟,然后在 PBS 和 FBS 中洗涤 2 次,并将样品管加载到流式细胞仪上。

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