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An “Age” Structured Model of Hematopoietic Stem Cell Organization with Application to Chronic Myeloid Leukemia

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Abstract

Previously, we have modeled hematopoietic stem cell organization by a stochastic, single cell-based approach. Applications to different experimental systems demonstrated that this model consistently explains a broad variety of in vivo and in vitro data. A major advantage of the agent-based model (ABM) is the representation of heterogeneity within the hematopoietic stem cell population. However, this advantage comes at the price of time-consuming simulations if the systems become large. One example in this respect is the modeling of disease and treatment dynamics in patients with chronic myeloid leukemia (CML), where the realistic number of individual cells to be considered exceeds 106. To overcome this deficiency, without losing the representation of the inherent heterogeneity of the stem cell population, we here propose to approximate the ABM by a system of partial differential equations (PDEs). The major benefit of such an approach is its independence from the size of the system. Although this mean field approach includes a number of simplifying assumptions compared to the ABM, it retains the key structure of the model including the “age” structure of stem cells. We show that the PDE model qualitatively and quantitatively reproduces the results of the agent-based approach.

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Authors and Affiliations

  1. Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany

    Ingo Roeder, Maria Herberg & Matthias Horn

  2. Department of Computing, Goldsmiths, University of London, London, UK

    Ingo Roeder

Authors
  1. Ingo Roeder
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  2. Maria Herberg
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  3. Matthias Horn
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Correspondence to Ingo Roeder.

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Roeder, I., Herberg, M. & Horn, M. An “Age” Structured Model of Hematopoietic Stem Cell Organization with Application to Chronic Myeloid Leukemia. Bull. Math. Biol. 71, 602–626 (2009). https://doi.org/10.1007/s11538-008-9373-7

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  • DOI: https://doi.org/10.1007/s11538-008-9373-7

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