昼夜节律相关基因与细胞外基因之间的关系:对睡眠剥夺的影响
Xuejuan Liu1, Jia Sun2, Zexia Ling1
1Cadre Ward of Neurology Department, Gansu Provincial People's Hospital, Lanzhou, 730000, Gansu, China.
Sleep & breathing = Schlaf & Atmung
|November 4, 2023
概括
睡眠不足通过改变细胞外基质 (ECM) 和昼夜节律基因,影响大脑健康. 这项研究揭示了小鼠MMP9 (ECM) 和昼夜基因PER2/TIMELESS之间的联系,为睡眠剥夺障碍提供了新的见解.
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
- 时间生物学 时间生物学
背景情况:
- 睡眠不足 (SD) 与病理性疾病有关.
- 细胞外矩阵 (ECM) 组成和昼夜节律基因是SD的关键因素.
- 在SD期间ECM和昼夜基因之间的关系尚不清楚.
研究的目的:
- 研究睡眠剥夺后海马体中ECM组成和昼夜节律基因之间的关系.
- 在诱导睡眠剥夺后探索小鼠海马中的分子变化.
主要方法:
- 使用修改的多平台水环境建立了睡眠剥夺的小鼠模型.
- 使用免疫光学,西部斑点和qRT-PCR来分析蛋白质和mRNA表达.
- 进行生物信息分析以确定差异表达的基因和相关性.
主要成果:
- 成功模拟睡眠剥夺,观察海马体的变化,包括增加的Bax和NGF,以及减少的Bcl-2.
- 经SD后差异表达的基因与ECM组成有关.
- 甲蛋白酶9 (MMP9) 是一个ECM成分,低调并与昼夜基因PER2,PER3,TIMELESS,FBXL3和NFIL3.3相关联.
- 在SD之后,海马体的PER2和TIMELESSmRNA水平被上调.
结论:
- 睡眠剥夺与小鼠海马体中昼夜节律基因 (PER2, TIMELESS) 的ECM组成 (MMP9) 有关.
- 这些发现为与睡眠剥夺相关的疾病背后的分子机制提供了新的视角.
相关概念视频
Circadian Rhythms and Gene Regulation
4.1K
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
4.1K
Insufficient Sleep and Sleep Deprivation
148
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Sleep deprivation is a more severe form of sleep loss...
148
The Extracellular Matrix
82.7K
Overview
82.7K
Extracellular Matrix
2.9K
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
2.9K
Understanding Sleep
236
Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
The circadian rhythm, a nearly 24-hour cycle, is deeply influenced by environmental light cues. Light exposure directly affects the hypothalamus, which in turn regulates...
236
Role of Matrix Metalloproteases in Degradation of ECM
2.4K
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult...
2.4K


