人类皮质中与神经发育障碍相关的基因的细胞特异表达偏差
Jeffrey B Russ1, Alexa C Stone2, Kayli Maney2
1Department of Pediatrics, Division of Neurology, Duke University, 2301 Erwin Rd, Durham, NC, 27710, USA. jeffrey.russ@duke.edu.
Scientific reports
|July 2, 2025
概括
单基因变异导致许多神经发育障碍. 这项研究揭示了这些遗传变化如何影响特定的大脑细胞类型,如神经元和微质细胞,影响发育和症状.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
背景情况:
- 单基因致病变体占先天性脑形和神经发育障碍的三分之一.
- 对于神经系统中这些变异的细胞病理生理学的理解仍然有限.
研究的目的:
- 研究与不同神经发育现象型相关的皮质细胞类型特定基因表达偏差.
- 为了确定受致病变体影响的特定细胞类型和潜在的介导症状.
主要方法:
- 来自两个大型患者队列 (杜克儿科遗传学和解密发育障碍研究) 的综合表型数据与人类皮质单核RNA测序 (snRNAseq) 数据集.
- 分析了来自86个人类皮质样本的snRNAseq数据,跨越发育阶段 (第二个三个月到成年).
主要成果:
- 确定了与语言/认知延迟和有关的基因的可复制的细胞特异性表达偏差.
- 在刺激神经元和微质中发现了这些基因的丰富表达,突出了它们在神经发育中的关键作用.
- 标记出不同的皮质细胞类型,更容易受到致病变体及其相关症状的影响.
结论:
- 特定的大脑细胞类型,包括刺激性神经元和微质细胞,受到潜在的神经发育障碍的病原体变异的差异影响.
- 细胞类型特定的基因表达偏差为单一性神经发育条件的病理生理学和症状学提供了洞察力.
- 这项研究推动了我们对遗传变异如何破坏细胞水平的神经发育的理解.
相关概念视频
01:28Human Genetics
738
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
738
02:30Genomic Imprinting and Inheritance
35.3K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
35.3K
01:33Pleiotropy
41.2K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
41.2K
01:58Cell Specific Gene Expression
14.0K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
14.0K
01:29Biological Causes of Schizophrenia
154
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
154
01:11Genetic Lingo
105.0K
Overview
105.0K