循环节调节器REV-ERBα是瘤谱系可塑性的主调节器,也是有效的治疗点
Xiong Zhang1, Yatian Yang1, Hongye Zou1
1Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Davis, CA 95817.
概括
雄激素受体信号传递抑制剂重编程REV-ERBα,驱动前列腺癌谱系可塑性和神经内分泌前列腺癌 (NEPC) 进展. 抑制REV-ERBα有效地阻断NEPC生长,提供了一个有前途的治疗标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 瘤血统可塑性 (LP) 在癌症进展中至关重要.
- 驱动初始LP事件的机制,特别是在前列腺癌中,仍然不清楚.
- 治疗诱导的神经内分泌前列腺癌 (t-NEPC) 由抗雄激素治疗下的腺癌引起.
研究的目的:
- 阐明REV-ERBα在前列腺癌治疗诱导的血统可塑性中的作用.
- 确定REV-ERBα调节LP驱动器的分子机制.
- 评估REV-ERBα作为NEPC的治疗点.
主要方法:
- 在前列腺癌模型中研究了REV-ERBα功能.
- 分析了由抗雄激素受体信号抑制剂 (ARSI) 诱导的基因表达和染色质可访问性变化.
- 使用了REV-ERBα的过度表达和击倒研究,以及药理抑制.
主要成果:
- ARSI重新编程REV-ERBα以促进LP,包括神经发生和上皮-介质细胞过渡.
- REV-ERBα充当主调节剂,促进关键LP驱动器的染色质占用,如BRN2和ASCL1.
- REV-ERBα过度表达诱导LP和ARSI抵抗;其抑制阻断NEPC生长和患者衍生的异种移植.
结论:
- 治疗诱导的LP涉及一个由REV-ERBα调节的协调的驱动网络.
- REV-ERBα是ARSI诱导的LP和NEPC发展的关键调解者.
- 对REV-ERBα的药理抑制是对包括NEPC在内的晚期前列腺癌的有效策略.
相关概念视频
Master Transcription Regulators
7.7K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.7K
Master Transcription Regulators
2.7K
2.7K
Negative Regulator Molecules
38.2K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
38.2K
Circadian Rhythms and Gene Regulation
4.5K
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...
4.5K
mTOR Signaling and Cancer Progression
4.6K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
4.6K
Abnormal Proliferation
5.1K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.1K


