不调节的血自身抗体与B细胞功能障碍有关,在卡塔尔的年轻阿拉伯儿童中患有自闭症谱系障碍
Samia M Ltaief1, Wared Nour-Eldine1, Nimshitha Pavathuparambil Abdul Manaph1
1Neurological Disorders Research Center, Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar.
概括
研究人员在患有自闭症谱系障碍 (ASD) 的儿童中确定了特定的自身抗体和B细胞变化. 八个自身抗体签名准确地分类了ASD严重程度,提供了潜在的诊断见解.
科学领域:
- 神经免疫学 神经免疫学
- 发育神经科学的发展神经科学.
- 免疫遗传学 免疫遗传学
背景情况:
- 自闭症谱系障碍 (ASD) 是一种神经发育状况,其特征是社会沟通缺陷和重复性行为.
- 有证据表明,在ASD中免疫系统失调,但自身抗体配置文件仍未得到充分研究.
- 了解自身抗体模式可能会揭示对ASD病变的新见解.
研究的目的:
- 用高通量蛋白质阵列在患有自闭症的幼儿中查血自身抗体.
- 识别与ASD诊断和严重程度相关的自身抗体.
- 研究B细胞变异及其与ASD中自身抗体的相关性.
主要方法:
- 使用高通量KoRctly Expressed (KREX) i-Ome蛋白质阵列技术,对100名患有自闭症儿童和60名对照儿童的自身抗体进行查.
- 分析了差异性自身抗体和基因表达,将研究结果与母亲年龄和出生体重等临床因素相关联.
- 评估循环B细胞种群 (包括活性和原始子集) 和它们与自身抗体水平的关系.
主要成果:
- 在ASD中鉴定出16种不同表达的自身抗体,其中33种与ASD严重程度相关的自身抗体.
- 发现失调的B细胞数量和激活 (HLADR+ B细胞,活性原始B细胞) 与自身抗体水平相关.
- 涉及MAPK信号通路的破坏;一个由八个自身抗体组成的小组在分类自闭症严重程度方面取得了93.7%的准确性.
结论:
- 在儿童中,自闭症的特征是明显的自身抗体配置和B细胞功能障碍.
- 一个八个自身抗体的签名显示了高的诊断准确性ASD严重程度的分类.
- 这些发现突出了ASD潜在的基于免疫的生物标志物.
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