黑色素和RORβ之间的复杂相互作用:生物物理测试显示,RORβ不太可能是黑色素的假定受体
Jiraporn Panmanee1, Sitthivut Charoensutthivarakul2,3,4, Chew Weng Cheng5
1Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, 73170, Thailand.
Molecular neurobiology
|August 6, 2024
概括
黑素可能不会直接与大脑中的与视网膜酸受体相关的孤儿受体β (RORβ) 结合. 虽然计算模型表明结合,但生物物理测试没有证实,表明间接的核影响.
科学领域:
- 神经内分泌学神经内分泌学
- 分子生物学分子生物学
- 计算化学计算化学
背景情况:
- 与视网酸受体相关的孤儿受体β (RORβ) 在大脑中至关重要,特别是松果腺,这是一个关键的黑激素生产部位.
- 黑色素和ROR受体之间的直接相互作用仍然是科学文献中争论的主题.
研究的目的:
- 调查黑激素与ROR受体异型的潜在结合,特别是RORβ.
- 探索黑色素核效应背后的分子机制.
主要方法:
- 计算分子对接被用来预测人类RORs上的黑激素结合部位.
- 生物物理技术,包括差异扫描度计 (DSF) 和异热定位热量计 (ITC),用于验证.
- 在接受了黑激素治疗后,进行了基因表达分析.
主要成果:
- 分子对接表明,黑激素可以结合所有ROR异型的联体结合域 (LBD),其得分与已知的黑激素受体相当.
- 生物物理测定 (DSF和ITC) 无法证实黑素与RORβ的直接结合,即使使用了协同激活剂.
- 黑色素治疗增加了RORα和RORβ基因表达,表明间接的核信号通路.
结论:
- 黑激素与RORβ带结合域之间的直接相互作用没有生物物理证据支持.
- 黑素对ROR信号的核效应可能是间接介导的,需要重新评估当前的模型.
- 需要进一步的研究来阐明神经元细胞中黑激素与核受体相互作用的精确机制.
相关概念视频
02:19Circadian 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
01:19Management of Insomnia
237
The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
237