使用近似贝叶斯计算对单相和双相瘤生长的基于代理物的模型进行校准
Xiaoyu Wang1,2, Adrianne L Jenner3,4, Robert Salomone4,5
1School of Mathematical Sciences, Queensland University of Technology, Brisbane, QLD, Australia. x311.wang@hdr.qut.edu.au.
Journal of mathematical biology
|February 15, 2024
概括
这项研究增强了基于Voronoi细胞的模型 (VCBM) 来模拟双相瘤生长,改善了癌症进化建模. 大致贝叶斯计算校准了模型,为癌细胞增殖和不确定性量化提供了洞察力.
科学领域:
- 计算生物学 计算生物学
- 数学瘤学数学瘤学
- 癌症研究 癌症研究
背景情况:
- 基于代理的模型 (ABM) 模拟瘤进化,但由于复杂性而面临验证挑战.
- 沃罗诺伊基于细胞的模型 (VCBM) 代表了单个细胞的形状和动态.
- 瘤生长可以表现出两相模式,因此需要捕捉这些不同阶段的模型.
研究的目的:
- 为了扩展VCBM以纳入双相瘤生长.
- 在模型校准和不确定性量化中使用近似贝叶斯计算.
- 通过对乳腺,卵巢和胰腺癌的体内测量来验证增强型号.
主要方法:
- 扩展基于沃罗诺伊细胞的模型 (VCBM),包括两个不同的生长阶段.
- 应用近似贝叶斯计算 (ABC) 进行参数估计和不确定性量化.
- 用多种癌症类型的体内实验数据对模型进行校准.
主要成果:
- 双相VCBM成功捕捉了实验数据中观察到的瘤生长动态.
- 该方法量化了增长阶段之间的切换时间中的不确定性.
- 细胞成熟时间的精确估计得到了实现,使模型精细化.
结论:
- 增强的VCBM为瘤进化和双相生长提供了宝贵的见解.
- 该方法允许在癌症模型中进行可靠的参数估计和不确定性评估.
- 这项工作有助于提高癌症生长建模的准确性和对细胞特征的理解.
更多相关视频
10:33Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification ADCI and Dose Estimation
Published on: September 4, 2017
15.7K
09:24Generation of Microtumors Using 3D Human Biogel Culture System and Patient-derived Glioblastoma Cells for Kinomic Profiling and Drug Response Testing
Published on: June 9, 2016
9.1K
相关概念视频
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
54
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
54
Kaplan-Meier Approach
138
The Kaplan-Meier estimator is a non-parametric method used to estimate the survival function from time-to-event data. In medical research, it is frequently employed to measure the proportion of patients surviving for a certain period after treatment. This estimator is fundamental in analyzing time-to-event data, making it indispensable in clinical trials, epidemiological studies, and reliability engineering. By estimating survival probabilities, researchers can evaluate treatment effectiveness,...
138
Tumor Progression
6.3K
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...
6.3K
