透露癌症驱动基因通过整合性转录和表观基因组分析与月光
Mona Nourbakhsh1,2, Yuanning Zheng3, Humaira Noor3
1Cancer Systems Biology, Section for Bioinformatics, Department of Health Technology, Technical University of Denmark, Lyngby, Denmark.
PLoS computational biology
|April 21, 2025
概括
我们开发了Moonlight2,这是一个整合DNA甲基化和基因表达的工具,用于识别癌症驱动基因. 这种方法揭示了在各种癌症类型中具有预后和治疗潜力的新型表观遗传驱动因素.
科学领域:
- 基因组学和表观遗传学
- 癌症生物学 癌症生物学
- 系统生物学 系统生物学
背景情况:
- 癌症是由驱动基因的遗传和表观遗传改变引起的,这对于理解致癌,预后和治疗至关重要.
- 之前的工作建立了月光框架,用于使用多omics数据预测驱动基因.
- 识别驱动基因对于推进癌症研究和治疗策略至关重要.
研究的目的:
- 通过将DNA甲基化数据用于驱动基因预测来增强月光框架.
- 引入基因甲基化分析 (GMA) 用于识别表观遗传放松调节的驱动基因.
- 为癌症中驱动基因表达特征提供表观遗传学证据.
主要方法:
- 开发了Moonlight2,集成了一个DNA甲基化分析模块 (基因甲基化分析 - GMA).
- 利用EpiMix工具检测异常的DNA甲基化模式,并将其与基因表达变化联系起来.
- 将GMA应用于基底类乳腺癌,肺腺癌和甲状腺癌数据集.
主要成果:
- 在基底性乳腺癌,肺腺癌和甲状腺癌中分别发现了33个,190个和263个表观遗传驱动的基因.
- 确定了一组具有显著预后价值的驱动基因子集,影响患者的存活率.
- 发现这些驱动基因的一部分代表了潜在的治疗点.
结论:
- 月光2通过整合基因表达和甲基化数据,为探索癌症的驱动力提供了一个强大的框架.
- 这项研究为三种不同的癌症亚型的表观遗传景观提供了新的见解.
- 已识别的驱动基因有可能改善癌症诊断,预后和治疗方法.
相关概念视频
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Such genes that act...
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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...
02:53Adaptive Mechanisms in Cancer Cells
Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
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...