患者大脑器官识别了16p11.2拷贝数变体和RBFOX1基因之间的联系
Milos Kostic1, Joseph J Raymond1, Christophe A C Freyre1
1Neuroscience, Novartis Institutes for BioMedical Research, Cambridge 02139, Massachusetts, United States.
ACS chemical neuroscience
|October 30, 2023
概括
在16p11.2区域的拷贝数变异 (CNV) 导致神经发育障碍. 人类皮质器官发现细胞粘附和神经元生长受损,将RBFOX1与这些疾病联系起来,并建议共同的治疗点.
科学领域:
- 遗传学 遗传学 是一个
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
背景情况:
- 在16p11.2基因组位置的拷贝数变异 (CNVs) 与神经发育障碍密切相关.
- 这些神经发育现象型背后的精确分子机制在很大程度上是未知的.
- 人类皮质器官 (hCOs) 为研究人类特异性疾病机制提供了一个有前途的模型.
研究的目的:
- 通过使用人类皮质器官来研究16p11.2 CNVs的细胞和分子后果.
- 为了识别受16p11.2删除影响的新基因和途径.
- 探索神经发育障碍的潜在融合治疗策略.
主要方法:
- 从具有16p11.2 CNV和对照的17个个体生成hCOs.
- 对167,958个细胞进行单细胞RNA测序分析.
- 在mRNA和蛋白质水平上验证基因表达变化.
主要成果:
- 鉴定与细胞-细胞粘附和神经元投射生长有关的神经元特异性差异性基因表达.
- 在16p11.2删除综合征有机体中降低了RBFOX1mRNA和蛋白质水平.
- 在患者衍生器官中RBFOX1调节基因的乱,在独立的CNV和神经发育表型之间建立联系.
结论:
- 16p11.2 CNVs 破坏关键的神经发育路径,包括细胞粘附和神经元生长.
- RBFOX1参与了16p11.2删除综合征的发病,将其与其他神经发育状况联系起来.
- 融合信号通路表明,对于各种罕见的神经发育疾病,可能是共同的治疗点.
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