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Front Genet. 2019 Jan 22;10:2. doi: 10.3389/fgene.2019.00002. eCollection 2019.

Machine Learning of Stem Cell Identities From Single-Cell Expression Data via Regulatory Network Archetypes.

Author information

1
Centre for Human Development, Stem Cells and Regeneration, Faculty of Medicine, University of Southampton, Southampton, United Kingdom.
2
Institute for Life Sciences, University of Southampton, Southampton, United Kingdom.
3
Mathematical Sciences, University of Southampton, Southampton, United Kingdom.

Abstract

The molecular regulatory network underlying stem cell pluripotency has been intensively studied, and we now have a reliable ensemble model for the "average" pluripotent cell. However, evidence of significant cell-to-cell variability suggests that the activity of this network varies within individual stem cells, leading to differential processing of environmental signals and variability in cell fates. Here, we adapt a method originally designed for face recognition to infer regulatory network patterns within individual cells from single-cell expression data. Using this method we identify three distinct network configurations in cultured mouse embryonic stem cells-corresponding to naïve and formative pluripotent states and an early primitive endoderm state-and associate these configurations with particular combinations of regulatory network activity archetypes that govern different aspects of the cell's response to environmental stimuli, cell cycle status and core information processing circuitry. These results show how variability in cell identities arise naturally from alterations in underlying regulatory network dynamics and demonstrate how methods from machine learning may be used to better understand single cell biology, and the collective dynamics of cell communities.

KEYWORDS:

eigenface approach; machine learning (artificial intelligence); pluripotency stem cells; regulatory network; single-cell data; stem cell

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