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在老鼠大脑中通过鼻内输送吸收介质干细胞衍生的外体
Zihe Zhang1, Siqi He1, Weijie Jiang1
1The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
Current drug delivery
|October 2, 2024
概括
来自干细胞的外体细胞可以通过鼻内注射输送到成年老鼠大脑中. 摄取量随年龄而有显著变化,老年小鼠在整个大脑中表现出更大的外体分布.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 外体,纳米级的细胞外囊泡,是细胞间通信的关键媒介.
- 来自干细胞的外基因组显示出治疗大脑疾病的前景.
- 有限的数据存在于不同年龄小鼠的大脑中的外体细胞递送和吸收.
研究的目的:
- 研究不同年龄组的小鼠大脑中干细胞衍生的外体的输送和吸收.
- 评估年龄对鼻内分娩后外体分布的影响.
主要方法:
- 介酶干细胞衍生的外体被标记为PKH-26.6.
- 内鼻分娩在2周,2个月和6个月以上的老鼠中进行.
- 在分娩后的24小时内,对大脑区域的外体分布进行了分析.
主要成果:
- 在2周大的小鼠的大脑中没有观察到外体分布.
- 在2个月大的小鼠的嗅球,皮质和海马体中检测到有限的外体细胞吸收,小脑中没有.
- 在6个月以上的小鼠中,在包括小脑在内的所有大脑区域都观察到显著的外体吸收.
结论:
- 鼻内注射使外体细胞进入成年老鼠大脑.
- 年龄显著影响大脑外体细胞吸收率.
- 研究结果支持鼻内外体作为治疗大脑疾病的潜在治疗策略,年龄因素对疗效至关重要.
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