昼夜钟对生物过程的贡献
Beibei Luo1,2,3, Jiangyuan Song1,2,3, Jiaqi Zhang1,2,3
1Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Frontiers in molecular biosciences
|June 21, 2024
概括
生物钟调节日常节律,对哺乳动物的发育和整体健康至关重要. 操纵昼夜节律可能为预防疾病和形提供新的策略.
科学领域:
- 时间生物学 时间生物学
- 发展生物学 发展生物学
- 哺乳动物生理学哺乳动物生理学
背景情况:
- 循环节律由内部生物钟控制,影响所有生物体的日常生理和行为模式.
- 在哺乳动物中,下丘脑中的上神经核是主生态时钟的所在地,由复杂的反循环驱动,涉及关键调节者,如Bmal1,Clock,mPer和Cry蛋白.
- 胚胎发育涉及复杂的形态变化,这些事件的时间受昼夜时钟的影响.
研究的目的:
- 审查昼夜时钟对身体内的生理活动的多方面的影响.
- 探索昼夜时钟对早期哺乳动物胚胎发育的影响.
- 通过昼夜节律调节提出疾病和形预防的新策略.
主要方法:
- 文献综述综合了关于昼夜时钟机制及其生理影响的当前研究.
- 分析研究研究生态时钟在胚胎发育中的作用.
- 针对昼夜节律的治疗方法的概念化.
主要成果:
- 昼夜时钟在调节各种生物过程中发挥着重要作用,包括新陈代谢,免疫功能和睡眠.
- 循环时钟功能显然与早期哺乳动物胚胎发育的时间和进展有关.
- 昼夜节律的干扰会对健康,生长和发育产生深远的影响.
结论:
- 昼夜时钟对于维持生理平衡至关重要,是正常发育不可或缺的一部分.
- 了解昼夜时钟与胚胎发育之间的相互作用,为发育生物学研究开辟了道路.
- 调节昼夜节律是预防先天性形和其他疾病的有希望的治疗策略.
相关概念视频
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
Biological Clocks and Seasonal Responses
34.6K
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
34.6K
Understanding Sleep
227
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...
227
The Pineal Gland
1.8K
The pineal gland, a diminutive endocrine structure named for its pinecone-shaped appearance, is situated atop the third ventricle within the diencephalon region of the forebrain. This gland, composed of secretory cells known as pinealocytes arranged in compact cords and clusters around dense particles of calcium salts, plays a pivotal role in hormonal regulation.
The primary secretion of the pineal gland is the hormone melatonin, derived from serotonin. The concentration of melatonin in the...
The primary secretion of the pineal gland is the hormone melatonin, derived from serotonin. The concentration of melatonin in the...
1.8K
Aging
41
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
41
Positive Regulator Molecules
5.4K
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
5.4K


