DiffInvex在瘤发生和化疗期间识别了驱动基因库中的进化转变
Ahmed Khalil1, Fran Supek2,3,4
1Institute for Research in Biomedicine (IRB Barcelona), 08028, Barcelona, Spain.
Nature communications
|May 13, 2025
概括
这项研究介绍了DiffInvex,这是一种用于检测癌症基因组中的基因选择变化的新工具. 它识别了与耐药性和癌症发展相关的基因,进步了我们对瘤演变的理解.
科学领域:
- 基因组学就是基因组学.
- 癌症生物学 癌症生物学
- 进化医学是一种进化医学.
背景情况:
- 身体突变驱动瘤的形成和进化,导致瘤的攻击性增加和耐治疗性.
- 了解癌症进展过程中对个体基因的选择性压力对于开发有效的治疗方法至关重要.
研究的目的:
- 开发DiffInvex,一个用于识别对体质基因组中单个基因起作用的选择变化的计算框架.
- 为了确定与药物耐药性和癌症发展相关的选择下的基因.
- 用非编码DNA基线分析癌症进化过程中中性突变发生的变化.
主要方法:
- 开发了DiffInvex,这是一个利用从非编码DNA获得经验突变率基线的框架.
- 将DiffInvex应用于来自30种癌症类型和健康组织的11000多个体质全基因组序列.
- 在化疗暴露期间分析了条件阳性或阴性选择的点突变.
主要成果:
- 确定了11个与各种化疗相关的治疗选择的基因,将PIK3CA,APC,MAP2K4,SMAD4,STK11和MAP3K1中的突变与药物暴露联系起来.
- 在治疗前和治疗后发现突变的差异性功能影响,支持基因化疗协会.
- 通过对比健康和癌细胞基因组,确定了非癌性扩张特异性驱动因素,包括NOTCH1和ARID1A.
结论:
- DiffInvex有效地识别了与药物耐药性机制相关的选择下的基因.
- 该框架提供了有关癌症演变,驱动基因库和潜在治疗点的见解.
- DiffInvex是一个多功能工具,适用于跨时空的癌症演变的各种分析.
相关概念视频
Cancer-Critical Genes II: Tumor Suppressor Genes
7.3K
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...
7.3K
In-vitro Mutagenesis
13.6K
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
13.6K
Adaptive Mechanisms in Cancer Cells
5.6K
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,...
5.6K
Exon Recombination
3.5K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.5K
Cancer-Critical Genes I: Proto-oncogenes
8.6K
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...
8.6K
Loss of Tumor Suppressor Gene Functions
4.7K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
4.7K


