Inference of random walk models to describe leukocyte migration
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Author(s)
Type
Journal Article
Abstract
While the majority of cells in an organism are static and remain relatively immobile in their tissue, migrating cells occur commonly during developmental processes and are crucial for a functioning immune response. The mode of migration has been described in terms of various types of random walks. To understand the details of the migratory behaviour we rely on mathematical models and their calibration to experimental data. Here we propose an approximate Bayesian inference scheme to calibrate a class of random walk models characterized by a specific, parametric particle re-orientation mechanism to observed trajectory data. We elaborate the concept of transition matrices (TMs) to detect random walk patterns and determine a statistic to quantify these TM to make them applicable for inference schemes. We apply the developed pipeline to in vivo trajectory data of macrophages and neutrophils, extracted from zebrafish that had undergone tail transection. We find that macrophage and neutrophils exhibit very distinct biased persistent random walk patterns, where the strengths of the persistence and bias are spatio-temporally regulated. Furthermore, the movement of macrophages is far less persistent than that of neutrophils in response to wounding.
Date Issued
2015-09-25
Date Acceptance
2015-07-13
Citation
Physical Biology, 2015, 12 (6)
ISSN
1478-3975
Publisher
IOP Publishing
Journal / Book Title
Physical Biology
Volume
12
Issue
6
Copyright Statement
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
License URL
Sponsor
Biotechnology and Biological Sciences Research Council (BBSRC)
NC3Rs (National Centre for the Replacement, Refinement and Reduction of Animals in Research)
Grant Number
BB/K017284/1
NC/K001949/1
Subjects
Science & Technology
Life Sciences & Biomedicine
Biochemistry & Molecular Biology
Biophysics
approximate Bayesian computation
innate immune signalling
in vivo imaging
APPROXIMATE BAYESIAN COMPUTATION
CELL-MIGRATION
ZEBRAFISH
SYSTEMS
09 Engineering
02 Physical Sciences
06 Biological Sciences
Publication Status
Published
Article Number
066001