循环基因多态和癌症:对发育和风险的洞察力
Danixa Llanos1, Kevins Jara-Medina1, Luis Lillo1
1Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bio-Bio, Campus Fernando May, Chillan, Chile.
Chronobiology international
|July 4, 2025
概括
现代生活方式破坏昼夜节律,增加疾病和癌症的风险. 时钟基因中的遗传变异可能会加剧这些时间干扰,影响细胞周期和癌症发展.
科学领域:
- 时间生物学 时间生物学
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- 现代生活方式引入了压力因素,破坏了生理适应能力和计时能力.
- 夜间暴露于光线的循环节障碍会影响新陈代谢,荷尔蒙和细胞过程,包括细胞周期.
- 越来越多的证据将昼夜干扰与增加疾病风险,特别是癌症联系在一起.
研究的目的:
- 审查核心昼夜时钟基因 (例如,BMAL-1,CLOCK,PER,CRY) 中的多态性在扰乱昼夜节律中的作用.
- 探索这些遗传变异如何影响细胞周期检查点 (例如,WEE1,Cyclins,C-MYC).
- 突出进一步研究昼夜干扰的遗传基础及其与癌症风险的联系的迫切需要.
主要方法:
- 文献综述侧重于昼夜钟基因及其多态性.
- 分析昼夜节律扰乱,遗传变异和细胞周期调节之间的相互作用.
- 综合证据,将昼夜干扰和遗传因素与癌症发展联系起来.
主要成果:
- 循环节障碍会影响平衡和细胞功能,这对癌症风险有影响.
- 时钟基因中的多态性 (BMAL-1, CLOCK, PER, CRY, RORA, NPAS2, TIMELESS) 可以导致昼夜时间的破坏.
- 这些干扰可以影响关键细胞循环调节器,如WEE1,Cyclins和C-MYC.
结论:
- 昼夜钟基因的遗传变异与时间中断有关.
- 了解这些遗传因素对于阐明癌症发展途径至关重要.
- 对针对昼夜系统的新型癌症诊断和预防策略需要进一步的研究.
相关概念视频
Circadian Rhythms and Gene Regulation
4.2K
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...
4.2K
Cancer-Critical Genes I: Proto-oncogenes
9.2K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
9.2K
Cancer-Critical Genes II: Tumor Suppressor Genes
8.1K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
8.1K
Cancers Originate from Somatic Mutations in a Single Cell
13.0K
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
13.0K
Cancer Prevention
6.3K
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
6.3K
Positive Regulator Molecules
5.7K
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.
5.7K


