激酶在抑制性回避训练的记忆巩固中的参与
Ivan Montiel1,2, Paola C Bello-Medina3, Roberto A Prado-Alcalá4
1Institut Pasteur, Université Paris Cité, Neural Circuits for Spatial Navigation and Memory, Department of Neuroscience, F-75015, Paris, France.
Reviews in the neurosciences
|September 26, 2024
概括
抑制性回避任务揭示了大脑如何形成长期的恐惧记忆. 强度训练可能使用涉及蛋白激酶的非基因组途径来加强记忆力,绕过典型的蛋白质合成.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 记忆研究 记忆研究
背景情况:
- 抑制性回避 (IA) 任务对于研究厌恶事件的长期记忆至关重要.
- 记忆巩固涉及各种大脑区域,包括海马体,条纹体,杏仁体和皮质.
- IA训练激活细胞内信号通路,包括蛋白激酶,影响基因表达和蛋白质合成,用于记忆存储.
研究的目的:
- 在IA任务中审查潜在的记忆巩固的分子和细胞机制.
- 探索蛋白激酶和细胞内信号在记忆形成中的作用.
- 调查强烈的IA训练机制,从而赋予对记忆丧失的抵抗力.
主要方法:
- 对大鼠IA记忆巩固中涉及的大脑结构研究的综述.
- 对神经递质,激素和生长因子参与的分析.
- 在海马体中关键蛋白激酶 (PKA,PKC,MAPK,ERK,CaMKII) 的时间动态和交叉的概述.
主要成果:
- IA训练触发信号级联,导致蛋白质合成和记忆存储的非基因组或基因组变化.
- 特定的蛋白质激酶在结构和突触变化中起作用,这些变化对记忆至关重要.
- 强烈的IA训练增强了旋转生成,并创造了抗灭绝的记忆,可能是通过非基因组途径.
结论:
- 蛋白激酶活性是IA任务中记忆巩固的核心.
- 强烈的IA训练可能利用与蛋白质合成不同的非基因组途径来增强记忆的持久性.
- 为了了解强大的记忆形成,需要进一步研究旋转发生的非基因组机制.
相关概念视频
Long-term Potentiation
51.6K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
51.6K
Long-term Potentiation
2.7K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...
Hebbian LTP
LTP can occur when...
2.7K
cAMP-dependent Protein Kinase Pathways
7.3K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
7.3K
Role of Amygdala in Memory
1.9K
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
1.9K
Role of Hippocampus in Memory
2.0K
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
2.0K


