解剖学报 ›› 2023, Vol. 54 ›› Issue (4): 383-391.doi: 10.16098/j.issn.0529-1356.2023.04.002

• 神经生物学 • 上一篇    下一篇

体外培养大脑皮质类器官与活体大脑皮质发育的比较

范文娟1,2 陈旭东1 陈永芳1 杨旭光1 金少举1 赵志军1*  邓锦波1*   

  1. 1.漯河医学高等专科学校,河南省营养与健康工程研究中心,河南 漯河 462002;2.漯河市第一人民医院神经内科,河南 漯河 462000
  • 收稿日期:2022-02-17 修回日期:2022-04-17 出版日期:2023-08-06 发布日期:2023-08-06
  • 通讯作者: 赵志军; 邓锦波 E-mail:zzj20220216@163.com
  • 基金资助:
    河南省科技厅项目;河南省科技厅项目;河南省自然科学基金

Developmental comparison between cerebral organoids in vitro and body’s cortices in vivo

FAN  Wen-juan1,2  CHEN  Xu-dong1  CHEN  Yong-fang1  YANG  Xu-guang1  JIN Shao-ju1 ZHAO  Zhi-jun1* DENG  Jin-bo1*   

  1. 1. Luohe Medical College, He’nan Province Engineering Research Center of Nutrition and Health, He’nan Luohe 462002, China ; 

    2. Neurology Department, the First People’s Hospital of Luohe City, He’nan Luohe 462000, China

  • Received:2022-02-17 Revised:2022-04-17 Online:2023-08-06 Published:2023-08-06
  • Contact: ZHAO Zhi-jun; DENG Jin-bo E-mail:zzj20220216@163.com

摘要:

目的 探讨体外培养大脑类器官与体内正常大脑皮质发育的差异。   方法 1. 分组:在体大脑皮质组、体外培养大脑皮质类器官组。2. 取材:收取昆明小鼠胚胎7.5 d(E7.5)、E9.5完整胚胎以及E11.5、E14.5、出生后3 d(P3)、P7大脑组织,每组标本取3只。利用小鼠诱导性多能干细胞(iPSCs)培养大脑皮质类器官,收取不同培养时间点的标本,每时间点取3个以上。3. 检测方法:通过免疫荧光染色分析各组标本不同类型细胞的分布。   结果 大脑类器官在组织发生、神经细胞与神经胶质细胞分化等方面与活体大脑皮质发育类似,但大脑类器官尚不具有活体大脑皮质复杂的片层结构。   结论 大脑类器官可以模拟在体大脑的发育,用于疾病模型建立,但大脑类器官的培养技术仍需改进。

关键词: 大脑类器官, 大脑皮质, 诱导性多能干细胞, 类器官培养, 免疫荧光, 小鼠

Abstract:

Objective To understand the characteristics and developmental differences between cerebral organoids in vitro and normal cerebral cortices in vivo.   Methods  1. Grouping: cerebral cortices in vivo group and cultured cerebral organoids in vitro group. 2.  Sample collection: cortical tissues were collected from Kunming mouse embryos at embryonic day 7.5(E7.5), E9.5, E11.5, E14.5, and postnatal day 3 (P3) or P7. Three specimens were taken from each group. Meanwhile, cerebral organoids were cultured with mouse induced pluripotent stem cells (iPSCs), and samples at different culture time point were collected, and more than 3 samples were collected at each time point. 3. Detection method: the distribution of different types of cells in each group of specimens was analyzed by immunofluorescent staining.  Results  While relative similarities between in vivo cerebral cortical development and the cerebral organoids in vitro were observed, including the histogenesis, and the morphological differentiation of nerve cells and glial cells, the lamellar architecture of cerebral cortex in mouse brain was not observed in cerebral organoids.     Conclusion  The development of cerebral organoids in vitro has some similarity with body’s cortical development. Therefore, cerebral organoids can be used to a substitution of cortex and diseases’ models, but improvement of the existing technologies is necessary. 

Key words: Cerebral organoid, Cerebral cortex, Induced pluripotent stem cell, Organoid culture, Immunofluorescence, Mouse

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