相关实验视频

Updated: Jan 13, 2026

Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice

Author Spotlight: Understanding Adolescent Social Adversity Effects on Neurodevelopment in Mice

Published on: March 15, 2024

社会失败的表观遗传特征压力不同的持续时间

Natalya Bondar^1,2, Vasiliy Reshetnikov^1,3, Polina Ritter^1,2

¹Institute of Cytology and Genetics, Lavrentiev Ave., 10, Novosibirsk 630090, Russia.

International journal of molecular sciences

|January 10, 2026

概括

在小鼠中,30天的社会失败压力 (SDS) 恶化了抑郁行为. 前额叶皮层中的质子修饰 (H3K4me3) 揭示了与压力和抑郁症相关的基因调节模式.

科学领域:

神经生物学神经生物学神经生物学
分子精神病学分子精神病学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

压力引起的精神障碍,如抑郁和焦虑,是全球性的健康问题.
了解这些条件的分子基础是至关重要的,但具有挑战性.
社会失败压力 (SDS) 是研究与压力相关的行为变化的一个相关模型.

研究的目的:

调查不同持续时间的SDS (10天和30天) 对小鼠行为和前额叶皮层的H3K4me3景观的影响.
将这些发现与现有的H3K4me3和15天SDS的转录基因数据进行比较.
阐明压力诱导的行为变化背后的分子机制.

主要方法:

对C57BL/6小鼠进行了10天和30天的社会失败压力 (SDS).
进行行为测试以评估类似抑郁症的症状.
染色体免疫沉测序 (ChIP-seq) 用于绘制前额叶皮层中的H3K4me3景观.
数据与现有的转录基因 (RNA-seq) 数据进行了整合.

主要成果:

一个30天的SDS期间导致更严重的抑郁类行为.
在许多基因组区域中,SDS诱导了H3K4me3密度的微妙变化.
促进区中的差异H3K4me3丰富形成了类似于"QR码"的模式,可能调节转录因子的可访问性.
一个特定的基因集群,包括转录因子 (Mef2c,Nr4a3) 和后突触蛋白 (Shank2,Shank1,Gria2),在SDS之后显示出差异H3K4me3丰富.

结论:

SDS的持续时间会影响抑郁类行为的严重程度.
前额叶皮层中的H3K4me3模式因慢性压力而动态改变.
参与突触可塑性和神经元功能的特定基因由SDS进行表观遗传调节.
这些发现提供了有关压力相关疾病的分子机制和潜在的治疗点的见解.

关键词:

在 ChIP-seqq.H3K4me3是什么意思 H3K4me3是什么意思抑郁抑郁症抑郁症抑郁症抑郁症表观遗传学是指表观遗传学.前额叶皮层前额叶皮层.社会失败压力社会失败压力

更多相关视频

Author Spotlight: Unveiling Mechanisms of Stress Resilience - Significant Findings, Advancements, and Future Research

Author Spotlight: Unveiling Mechanisms of Stress Resilience - Significant Findings, Advancements, and Future Research

Published on: December 15, 2023

Chronic Social Defeat Stress in Early Adolescent Male Mice

Chronic Social Defeat Stress in Early Adolescent Male Mice

Published on: January 24, 2025

相关概念视频

Introduction to Stress and Lifestyle

Introduction to Stress and Lifestyle

Stress is a multifaceted response to events perceived as challenging or threatening, highlighting physical, emotional, cognitive, and behavioral reactions. Physically, stress can lead to fatigue, sleep disruptions, and various health issues such as frequent colds, chest pains, and nausea. Emotionally, it can manifest as anxiety, depression, irritability, and anger triggered by both minor and major life events. Cognitively, it may result in difficulty in concentration, memory, and...

Stress and Mental Health

Stress and Mental Health

Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...

Physiological Foundation of Stress

Physiological Foundation of Stress

Stress triggers a coordinated physiological response involving the sympathetic nervous system (SNS) and the hypothalamic-pituitary-adrenal (HPA) axis. This dual activation ensures that the body is prepared for both immediate and prolonged stress management. The process begins with the perception of a stressor. This initial phase activates the SNS, leading to the rapid release of adrenaline (epinephrine) from the adrenal glands.
Role of the Sympathetic Nervous System
Adrenaline triggers the...

Psychological Responses to Stress

Psychological Responses to Stress

Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...