Comput Math Methods Med - In vivo imaging-based mathematical modeling techniques that enhance the understanding of oncogene addiction in relation to tumor growth.


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The dependence on the overexpression of a single oncogene constitutes an exploitable weakness for molecular targeted therapy. These drugs can produce dramatic tumor regression by targeting the driving oncogene, but relapse often follows. Understanding the complex interactions of the tumor's multifaceted response to oncogene inactivation is key to tumor regression. It has become clear that a collection of cellular responses lead to regression and that immune-mediated steps are vital to preventing relapse. Our integrative mathematical model includes a variety of cellular response mechanisms of tumors to oncogene inactivation. It allows for correct predictions of the time course of events following oncogene inactivation and their impact on tumor burden. A number of aspects of our mathematical model have proven to be necessary for recapitulating our experimental results. These include a number of heterogeneous tumor cell states since cells following different cellular programs have vastly different fates. Stochastic transitions between these states are necessary to capture the effect of escape from oncogene addiction (i.e., resistance). Finally, delay differential equations were used to accurately model the tumor growth kinetics that we have observed. We use this to model oncogene addiction in MYC-induced lymphoma, osteosarcoma, and hepatocellular carcinoma.

Resumo Limpo

depend overexpress singl oncogen constitut exploit weak molecular target therapi drug can produc dramat tumor regress target drive oncogen relaps often follow understand complex interact tumor multifacet respons oncogen inactiv key tumor regress becom clear collect cellular respons lead regress immunemedi step vital prevent relaps integr mathemat model includ varieti cellular respons mechan tumor oncogen inactiv allow correct predict time cours event follow oncogen inactiv impact tumor burden number aspect mathemat model proven necessari recapitul experiment result includ number heterogen tumor cell state sinc cell follow differ cellular program vast differ fate stochast transit state necessari captur effect escap oncogen addict ie resist final delay differenti equat use accur model tumor growth kinet observ use model oncogen addict mycinduc lymphoma osteosarcoma hepatocellular carcinoma

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