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Predicting pathogen-specific CD8 T cell immune responses from a modeling approach.

F Crauste1, E Terry2, I Le Mercier3

  • 1Université de Lyon, Université Lyon 1, CNRS UMR 5208, Institut Camille Jordan 43 blvd du 11 novembre 1918, F-69622 Villeurbanne-Cedex, France; Inria Team Dracula, Inria Center Grenoble Rhône-Alpes, France.

Journal of Theoretical Biology
|April 8, 2015
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Summary
This summary is machine-generated.

This study identifies key parameters controlling CD8 T cell immune responses to intracellular pathogens. A mathematical model reveals 2-4 critical parameters define pathogen-specific responses, influencing cell death and memory formation.

Keywords:
CD8 T cellsImmune responseNonlinear modelParameter value estimationPredictive model

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Area of Science:

  • Immunology
  • Mathematical Biology
  • Computational Immunology

Background:

  • CD8 T cell immune responses are crucial for controlling intracellular pathogen infections.
  • Understanding pathogen-specific dynamics of CD8 T cell responses is essential for effective treatment strategies.

Purpose of the Study:

  • To identify pathogen-specific dynamical parameters of CD8 T cell responses using a mathematical modeling approach.
  • To assess if CD8 T cell counts kinetics can reveal these characteristic parameters.

Main Methods:

  • Generated experimental CD8 T cell count kinetics data for influenza, vaccinia, and Listeria monocytogenes infections.
  • Developed a mathematical model of CD8 T cell and pathogen dynamics with 9 parameters.
  • Compared model outputs to experimental data and performed parameter estimation.

Main Results:

  • A small number of parameters (2-4) were identified as critical in defining CD8 T cell immune response features.
  • These key parameters are characteristic of the specific pathogen and influence effector cell control and pathogen clearance.
  • Memory cell death parameter is less critical during acute infection but essential for long-term predictions.

Conclusions:

  • Mathematical modeling can identify key, pathogen-specific parameters governing CD8 T cell immune responses.
  • These parameters, particularly those related to cell death, are crucial for understanding infection dynamics and long-term immunity.
  • The study highlights the power of integrating experimental data with mathematical models to dissect complex biological processes.