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在衰老和精神分裂症中,协同的神经元-星细胞基因表达下降
Emi Ling1,2, James Nemesh1,2, Melissa Goldman1,2
1Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
人类大脑细胞,神经元和星体细胞,通过突触神经元和星体细胞程序 (SNAP) 进行协调. 这个程序是这个程序.
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
- 遗传学 是一个遗传学.
背景情况:
- 人类大脑的变异在细胞水平上是不理解的.
- 老龄化和精神分裂症的认知衰退涉及减少可塑性.
- 星球细胞-胆固醇合成支持突触功能.
研究的目的:
- 为了研究皮层神经元和人类大脑中的星球细胞之间的关系.
- 识别人类正常大脑变异背后的细胞机制.
- 探索细胞相互作用在精神分裂症和衰老中的作用.
主要方法:
- 从191名人类捐赠者 (年龄22-97岁) 的前额叶皮层单核RNA测序 (snRNA-seq).
- 潜在因子分析以确定基因表达模式.
- 分析包括健康个体和精神分裂症患者.
主要成果:
- 在皮层神经元和星球细胞之间确定了一种协调的基因表达程序,即突触神经元和星球细胞程序 (SNAP).
- SNAP涉及两种细胞类型的突触功能基因和星球细胞中的胆固醇合成.
- 在精神分裂症和衰老中,星球细胞,谷氨酸性神经元和GABAergic神经元中的SNAP表达减少.
- 对于精神分裂症的遗传风险因素,SNAP组件得到了丰富.
- 即使在健康个体中,SNAP的表达也在数量上有所不同.
结论:
- SNAP是人类皮质中一个关键的细胞关系.
- 在老化和精神分裂症中,SNAP功能障碍可能是认知衰退的基础.
- SNAP代表了各种神经病理学的潜在融合点.
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