Multiscale Modeling of the Early CD8 T-Cell Immune Response in Lymph Nodes: An Integrative Study

Abstract : CD8 T-cells are critical in controlling infection by intracellular pathogens. Upon encountering antigen presenting cells, T-cell receptor activation promotes the differentiation of naïve CD8 T-cells into strongly proliferating activated and effector stages. We propose a 2D-multiscale computational model to study the maturation of CD8 T-cells in a lymph node controlled by their molecular profile. A novel molecular pathway is presented and converted into an ordinary differential equation model, coupled with a cellular Potts model to describe cell-cell interactions. Key molecular players such as activated IL2 receptor and Tbet levels control the differentiation from naïve into activated and effector stages, respectively, while caspases and Fas-Fas ligand interactions control cell apoptosis. Coupling this molecular model to the cellular scale successfully reproduces qualitatively the evolution of total CD8 T-cell counts observed in mice lymph node, between Day 3 and 5.5 post-infection. Furthermore, this model allows us to make testable predictions of the evolution of the different CD8 T-cell stages.
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https://hal.inria.fr/hal-01074736
Contributeur : Fabien Crauste <>
Soumis le : mercredi 15 octobre 2014 - 12:14:24
Dernière modification le : lundi 10 décembre 2018 - 15:48:05

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Sotiris Prokopiou, Loic Barbarroux, Samuel Bernard, Julien Mafille, Yann Leverrier, et al.. Multiscale Modeling of the Early CD8 T-Cell Immune Response in Lymph Nodes: An Integrative Study. Computation, MDPI, 2014, 2 (4), pp.159-181. 〈10.3390/computation2040159〉. 〈hal-01074736〉

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