微质隔离和培养方法对转录特征和功能的影响
Mark Mizrachi1,2, Betty Diamond3,4
1Feinstein Institutes of Molecular Medicine, Feinstein Institutes for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
Journal of neuroinflammation
|April 8, 2024
概括
选择正确的微质分离方法对于研究至关重要. 不同的协议影响细胞产量,RNA质量和对像HMGB1这样的刺激的反应,影响实验结果.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 优化微质隔离和培养对于最大限度地提高产量,纯度,响应性和体内相似性至关重要.
- 本研究评估了从新生儿和成年小鼠中分离微质的五种不同的方法.
研究的目的:
- 用五种不同的方法分离的微质细胞的转录形状和HMGB1响应性进行比较.
- 评估隔离和培养方案对微质特征的影响.
主要方法:
- 测试了五种微质隔离方案:三种来自新生小鼠 (在GM-CSF使用和培养持续时间上有所不同),两种来自成年小鼠 (依附性和CD11b珠子隔离).
- 评估了纯度,产量和RNA质量. 通过细胞因子分泌 (TNFα,IL1β,IFNβ) 和使用散装mRNA测序的基因表达来评估对HMGB1的反应.
主要成果:
- 所有方法都实现了>90%的纯度.
- 在所有测试的微质细胞中,HMGB1刺激增加了TNFα,IL1β和IFNβ的转录和分泌.
- 与成人微质相比,新生儿微质在对HMGB1的反应中表现出更差异化的基因表达. 成人和新生儿培养的微细胞都显示出早期发育阶段的转录特征.
结论:
- 虽然所有方法都产生高纯度的微质,但协议选择显著影响产量,RNA质量,基线转录和刺激反应.
- 这种比较分析为选择适当的微质隔离和培养技术提供了关键的见解.
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