Please use this identifier to cite or link to this item:
|Title:||Stochastic Modeling of Cell Dynamics, Mutation Acquisition and Cancer Risk|
Department of Applied Mathematics and Statistics.
Kuan, Pei Fen
|Abstract:||It is well recognized that cancer results from multi-stage mutation acquisitions. To this end, both intrinsic and extrinsic factors contribute to mutagenesis in cancer and subsequently the risk of cancer. To better understand the process of cancer initiation and the contributions of various risk factors, we build stochastic models for carcinogenesis based on modern cancer stem cell theory with clonal expansion. In our extended risk model, we have incorporated all three types of cell lineages including stem cells, progenitor cells and terminal cells. We have also included major ingredients for cancer development, including general cell behaviors, tissue homeostasis, multi-stage mutation acquisition, as well as how driver mutations may alter cell behaviors through cell fitness or clonal expansion. Our model provides a general framework for estimating cancer risk and cancer mutation distributions at any age in a lifetime. With these models, we can simulate and analyze the effect of different factors on the speed, magnitude and risk of cancer onset. In particular, for each cancer, based on observed cancer risk data, we can quantify (1) the amount of lifetime risk due to the intrinsic mutations alone, that is, the intrinsic risk, or as the media calls, the ‘bad luck’, and (2) the percent of mutations due to intrinsic risk alone. Applying our modeling in conjunction with the US and the World cancer registry data, we found that non-intrinsic risk accounts for not only the major percentage of lifetime cancer risk, but also the major proportion of lifetime cancer mutations.|
|Appears in Collections:||Stony Brook Theses and Dissertations Collection|
Files in This Item:
|Tian_grad.sunysb_0771E_13450.pdf||9.16 MB||Adobe PDF||View/Open|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.