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JoVE Encyclopedia of Experiments
Neuroscience
分离和培养小鼠小脑颗粒神经元祖细胞
分离和培养小鼠小脑颗粒神经元祖细胞
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Isolating and Culturing Murine Cerebellar Granular Neuron Progenitors

分离和培养小鼠小脑颗粒神经元祖细胞

Protocol
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04:34 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

以小鼠幼崽大脑为例。

将它们

均质化成更小的碎片。

添加蛋白水解酶来消化组织的细胞外基质,松弛小脑颗粒祖细胞(CGNP)和星形胶质细胞。

加入含有血清的CGNP培养基以停止酶活性。离心并丢弃富含酶的上清液。

将

组织片段重悬于 CGNP 培养基中。机械解离组织以释放细胞。

一旦碎片沉淀,将含有细胞的上清液转移到新鲜管中。

离

心并去除带有碎屑的上清液。

将细胞重悬于 CGNP 培养基中,并将它们接种到涂有聚-D-赖氨酸的多孔板孔中。孵化。

与

CGNP 相比,星形胶质细胞沉降并牢固地粘附在聚-D-赖氨酸涂层上。

摇动板并收集含有 CGNP 的上清液。离心并除去上清液。

将 CGNP 重悬于 CGNP 培养基中,并将它们接种到聚-L-鸟氨酸包被的多孔板上。孵化。

CGNP 附着在涂层表面并在培养基成分和聚-L-鸟氨酸的帮助下增殖。

将三到五个小脑转移到 15 毫升的管中。离心前用HBSS葡萄糖洗涤小脑。离心试管以收集组织。最后一次洗涤后,用1毫升移液器轻轻上下移液2至3次,使小脑均质化,直到碎片大小为0.5至1立方毫米。

轻轻取出所有液体,直到剩余 2.5 毫升。然后,将0.05%胰蛋白酶加入含有大脑的HBSS葡萄糖的管中,并将组织在37摄氏度的水浴中孵育15分钟。每 1 至 3 分钟倒置一次组织。孵育后,通过加入5毫升cGMP细胞培养基或CGM停止消化,并像以前一样通过离心收集组织。

离心后,除去上清液并加入 1 毫升 CGM。用 1 毫升移液器吸头研磨组织,避免形成气泡。然后,加入 5 毫升 CGM,并将混合物在冰上孵育两分钟以沉淀组织残留物。组织沉降后,将上清液转移到新的 15 毫升管中。然后,向残留组织中加入2毫升CGM,并在收获上清液并丢弃组织残余物之前重复研磨程序。

从

每管15毫升组织中汇集上清液,并离心以收集小脑细胞。将沉淀重悬于 10 毫升 CGM 中。由于星形胶质细胞比cGMP对聚-D-赖氨酸的粘附更快,更强,因此将最多4毫升的细胞悬液添加到聚-D-赖氨酸包被的6孔板的孔中,并在37摄氏度下孵育20分钟以去除星形胶质细胞。

摇动盘子。将上清液收集在15毫升管中,然后像以前一样离心上清液。将沉淀重悬于 10 毫升 CGM 中,并用 Neubauer 计数室计数细胞。4-6小时后,粘附的cGMP呈圆形,呈增殖性。将细胞接种在聚-L-鸟氨酸包被板上的CGM中,并在37摄氏度,5%CO2和100%相对湿度下孵育。

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