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相关概念视频

Long-term Depression01:03

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
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相关实验视频

Updated: May 11, 2025

DetectSyn: A Rapid, Unbiased Fluorescent Method to Detect Changes in Synapse Density
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在严重抑郁症中探索男性特异性突触可塑性:使用生物信息学方法进行单核转录组分析.

Ji Chen1, Xiumei Zhu1,2, Fan Yang3

  • 1Institute of Forensic Science, Fudan University, Shanghai 200032, China.

International journal of molecular sciences
|April 17, 2025
PubMed
概括

大型抑郁症 (MDD) 涉及到突触可塑性的改变. 这项研究确定CASKIN1和CSTB是激发性神经元中的关键基因,可能由miR-21-5p调节,影响神经连接.

关键词:
基因中心 基因枢纽机器学习是机器学习.大型抑郁症是主要的抑郁症.单核RNA测序的一个核.突触性可塑性 突触性可塑性

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.
  • 分子生物学分子生物学

背景情况:

  • 重度抑郁症 (MDD) 是一种复杂的精神疾病.
  • 突触可塑性与MDD的病理学有关.

研究的目的:

  • 调查MDD的分子基础.
  • 在单细胞水平上分析与突触可塑性相关的基因表达.

主要方法:

  • 单细胞RNA测序 (snRNA-seq) 的数据分析 (GSE144136).
  • 大量RNA测序 (RNA-seq) 数据集成 (GSE38206).
  • 基因组丰富分析 (GSEA),差异表达分析,机器学习,细胞-细胞通信分析和分子网络构建.

主要成果:

  • 刺激性神经元_1被确定为与MDD和突触可塑性相关的关键细胞群.
  • CASKIN1和CSTB被确定为枢纽基因.
  • miR-21-5p被强调为一种潜在的生物标志物,在激发性神经元_1细胞中建议降低CASKIN1的调节,导致神经连接性降低.

结论:

  • 提出一种涉及MDD中miR-21-5p,CASKIN1和突触可塑性的分子机制.
  • 研究结果为MDD的细胞和分子动态提供了洞察力.
  • 结果可能特定于男性样本.