与阿尔茨海默氏病相关的补充受体1变体通过影响质细胞灭菌产生风险
Nikoleta Daskoulidou1, Bethany Shaw1, Wioleta Milena Zelek1
1UK Dementia Research Institute at Cardiff University, School of Medicine, Cardiff University, Cardiff, UK.
概括
阿尔茨海默氏病 (AD) 风险变体补充受体1 (CR1) *2增强了被 opsonized 目标的质细胞化,尽管CR1表达较低. 这一发现解释了CR1*2如何通过促进质清除机制来增加AD风险.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 遗传学是一种遗传学.
背景情况:
- 全基因组关联研究将补充系统与阿尔茨海默病 (AD) 病原体联系起来.
- 补体受体1 (CR1) 的CR1*2变体与AD风险增加有关.
- 在质细胞上证实了CR1的表达,但CR1变异对AD风险的功能影响仍然不清楚.
研究的目的:
- 为了研究CR1变异对质细胞细胞的功能后果.
- 阐明CR1*2变种增加AD风险的机制.
主要方法:
- 产生的诱导多能干细胞 (iPSC) 衍生微质细胞和来自具有CR1*1或CR1*2同基因型的捐赠者的星体.
- 使用各种opsonized目标 (大肠杆菌生物颗粒,粉样β聚合物,synaptoneurosomes) 量化CR1表达和评估细胞活性.
主要成果:
- 在质线上,CR1*1表达高于CR1*2.
- 与CR1*1表达的质细胞相比,CR1*2表达的质细胞显著增强了所有位细胞的化作用,特别是与血清opsonization.
- 通过I因子耗尽实验证实了CR1在处理被对象的目标中的作用.
结论:
- 补剂受体1 (CR1) 对于被色材料的质细胞形成至关重要.
- 尽管表达水平较低,但CR1*2变种增强了质细胞的吞能力.
- 这种由CR1*2表达的质细胞增强的细胞增生,为与这种变体相关的AD风险增加提供了机制性的解释.
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