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Coupled differentiation and division of embryonic stem cells inferred from clonal snapshots

Research output: Contribution to journalArticle

Author(s)

Liam J. Ruske, Jochen Kursawe, Anestis Tsakiridis, Valerie Wilson, Alexander G. Fletcher, Richard A. Blythe, Linus J. Schumacher

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Abstract

The deluge of single-cell data obtained by sequencing, imaging and epigenetic markers has led to an increasingly detailed description of cell state. However, it remains challenging to identify how cells transition between different states, in part because data are typically limited to snapshots in time. A prerequisite for inferring cell state transitions from such snapshots is to distinguish whether transitions are coupled to cell divisions. To address this, we present two minimal branching process models of cell division and differentiation in a well-mixed population. These models describe dynamics where differentiation and division are coupled or uncoupled. For each model, we derive analytic expressions for each subpopulation's mean and variance and for the likelihood, allowing exact Bayesian parameter inference and model selection in the idealised case of fully observed trajectories of differentiation and division events. In the case of snapshots, we present a sample path algorithm and use this to predict optimal temporal spacing of measurements for experimental design. We then apply this methodology to an \textit{in vitro} dataset assaying the clonal growth of epiblast stem cells in culture conditions promoting self-renewal or differentiation. Here, the larger number of cell states necessitates approximate Bayesian computation. For both culture conditions, our inference supports the model where cell state transitions are coupled to division. For culture conditions promoting differentiation, our analysis indicates a possible shift in dynamics, with these processes becoming more coupled over time.
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Details

Original languageEnglish
JournalArXiv e-prints
Publication statusPublished - 27 Apr 2020

    Research areas

  • q-bio.QM, physics.bio-ph, q-bio.CB, 92C15

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