相关实验视频
Updated: Jan 15, 2026
06:01
A Genetically Engineered Mouse Model of Sporadic Colorectal Cancer
Published on: July 6, 2017
9.9K
数学建模量化了"正确"的APC失活对于结肠直肠癌的启动
Meritxell Brunet Guasch1, Nathalie A Feeley2, Ignacio Soriano3
1School of Mathematics and the Maxwell Institute for Mathematical Sciences, University of Edinburgh, Edinburgh, United Kingdom.
Cancer research
|October 15, 2025
概括
细菌腺瘤多样性大肠杆菌 (APC) 基因的部分失活,而不是完全丧失,通过微调WNT信号,为结直肠癌的发展创造了最佳条件. 这种"恰到好处"的APC失活水平显著增加了癌症进展的概率.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 计算生物学 计算生物学
背景情况:
- 在结直肠癌 (CRC) 的发展过程中,腺多样性大肠杆菌 (APC) 基因的调节失调至关重要,主要是通过WNT/β-catenin通路激活.
- 大多数CRC都表现出双基APC突变,导致部分功能丧失,但不完全丧失功能,这表明特定水平的APC失活对于瘤发生是最佳的.
研究的目的:
- 开发一个数学模型来量化各种双基APC基因型的瘤产生影响.
- 研究体质突变过程如何影响APC无活化水平及其与癌症进展的相关性.
主要方法:
- 分析了来自2500多例结直肠癌病例的序列数据.
- 开发和应用一个数学模型来评估不同APC基因型的瘤效应.
- 在体内评估二次WNT驱动器改变与APC突变的结合.
主要成果:
- 具有部分蛋白质功能的APC基因型与与APC完全失活相比,癌症进展的概率高约50倍.
- 针对瘤发生的最佳APC无活化水平因瘤的位置和额外WNT通路突变的存在而有所不同.
- 发现AMER1中的突变可以增强亚最佳APC基因型瘤中的WNT活性.
结论:
- 在不同亚型的结肠直肠癌发育中,APC无活化和WNT信号的"恰当"水平似乎是一个一般原则.
- 由特定的APC无活化水平和二次突变驱动的WNT过活化代表了结直肠癌的潜在治疗脆弱性.
相关概念视频
01:21Cancer Survival Analysis
645
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
645
02:07Tumor Progression
7.2K
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
7.2K