昼夜时钟在胰腺癌中被破坏
Patrick B Schwartz1, Manabu Nukaya1, Mark E Berres2
1Department of Surgery, Division of Surgical Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America.
PLoS genetics
|June 1, 2023
概括
循环时钟的干扰与胰腺癌的进展有关. 研究表明,人类胰腺瘤的时钟减弱,加速生长和恶化存活率.
科学领域:
- 在瘤学瘤学.
- 时间生物学 时间生物学
背景情况:
- 循环时钟的干扰与癌症的发展和进展有关.
- 在人类胰腺癌中表征昼夜时钟是具有挑战性的.
- 胰腺癌是人类最致命的恶性瘤之一.
研究的目的:
- 为了研究昼夜时钟在人类胰腺癌中的功能.
- 确定昼夜时钟中断在胰腺癌进展中的作用.
主要方法:
- 在人类人口层面的数据上使用了正常化变化系数 (nCV) 和时钟相关性分析.
- 在人类和小鼠胰腺转录组数据上采用机器学习方法循环按周期结构排序 (CYCLOPS).
- 使用Bmal1淘汰赛小鼠胰腺癌模型评估了时钟中断的影响.
主要成果:
- 与正常组织相比,人类胰腺癌组织表现出明显减弱的昼夜时钟.
- 正常的胰腺显示出一个完整的昼夜时钟,核心时钟基因的循环很强,而胰腺癌显示出节律性丧失.
- 带有不节律时钟的Bmal1淘汰小鼠显示瘤生长加速,生存率降低,化学抵抗,以及与癌症相关的途径的丰富.
结论:
- 提供了关于人类胰腺癌中昼夜时钟干扰的有力证据.
- 证明昼夜干扰和胰腺癌进展之间存在直接联系,强调时钟作为潜在的治疗目标.
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
Chronic Pancreatitis I: Introduction
117
The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
117
Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
94
Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
94
mTOR Signaling and Cancer Progression
3.8K
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...
3.8K


