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arXiv 1607.08009q-bio.TOq-bio.PE
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实体瘤生长的数学模型及联合治疗在结直肠癌中的应用

A mathematical model for growth of solid tumors and combination therapy with an application to colorectal cancer

Valeria De Mattei, Franco Flandoli, Marta Leocata, Maria Cristina Polito, Cristiano Ricci

摘要:

我们提出了一个数学模型,基于常微分方程,为实体瘤的演变和他们对治疗的反应。具体而言,细胞毒性剂和单克隆抗体的作用作为控制项包括在方程中。这里考虑的变量是:对化疗敏感的癌细胞的数量,对化疗耐药的癌细胞的数量,血管生成的程度和VEGF的平均强度。控制上述数量的规则基于几何参数:我们将肿瘤质量近似为球体,从而推导出含氧量正常的细胞和VEGF产生的基本公式。该单克隆抗体作用于VEGF,因此对血管生成的总体程度有影响。对一些参数进行数值估计,以匹配肿瘤进展的主要标志和结直肠癌特定病例的治疗反应。

英文摘要:

We present a mathematical model, based on ordinary differential equations, for the evolution of solid tumors and their response to treatment. Specifically the effects of a cytotoxic agent and a monoclonal antibody are included as control term in the equations. The variables considered here are: the number of cancerous cells sensitive to chemotherapy, the number of cancerous cells resistant to chemotherapy, the degree of angiogenesis and the average intensity of VEGF. The rules that govern the quantities mentioned above are based on a geometrical argument: we approximate the tumor mass as a sphere and thus derive basic formulae for the normoxic cells and for VEGF production. The monoclonal antibody acts on VEGF and thus has in uence to the global degree of angiogenesis. Numerical estimates on some of the parameters are performed in order to match the main landmark in tumor progression and reaction to treatment in the specific case of colorectal cancer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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