人类的PERIOD3变种通过葡萄糖皮质醇信号传递导致类似冬季抑郁症的行为
Qian Gao1,2, Zhiwei Tang1, Haili Wang1
1Key Laboratory of Molecular Biophysics of Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.
Nature metabolism
|November 11, 2024
概括
在PERIOD3基因中的人类变异通过改变上腺功能和血清素合成,在小鼠中引起类似冬季抑郁的行为. 这些发现揭示了季节性情绪特征的机制.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
背景情况:
- 像冬季抑郁症这样的季节性情绪障碍与昼夜节律障碍有关.
- 人类昼夜钟基因PERIOD3 (PER3) 具有与冬季抑郁症相关的变体 (P415A,H417R).
- 连接PER3变异与季节性情绪障碍的确切机制尚不清楚.
研究的目的:
- 研究人类PER3变体 (P415A,H417R) 对季节性情绪障碍的功能影响.
- 在小鼠模型中阐明潜在的分子和生理机制.
主要方法:
- 使用了携带人类PER3变体 (P415A,H417R) 的小鼠模型.
- 评估与冬季抑郁相关的行为表型.
- 测量皮质水平和上腺功能.
- 分析了基酶2 (Tph2) 基因表达的分析,这对氨酸的合成至关重要.
主要成果:
- 具有人类PER3变异的雄性小鼠表现出类似于冬季抑郁症的行为.
- 这些行为与上腺的功能有关.
- 通过增加合成,PER3变体破坏了皮质的正常下调,以应对更短的白天长度.
- 由变体驱动的高葡萄糖皮质激素信号,抑制了Tph2转录,减少了血清的合成.
结论:
- 人类PER3变种P415A和H417R通过上腺腺机制促进季节性情绪特征.
- 这些变异通过改变皮质调节和血清合成来破坏季节性适应.
- 这项研究揭示了一条新的途径,将昼夜钟遗传与季节性情绪障碍病理生理学联系起来.
相关概念视频
Hypothalamic-Pituitary Axis
59.3K
The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
59.3K
Major Hormones and Their Functions
333
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
333
Circadian Rhythms and Gene Regulation
4.0K
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...
4.0K
Depression: Overview
219
Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
219
Human Genetics
535
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...
535


