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Oscillatory Protein Expression Dynamics Endows Stem Cells with Robust Differentiation Potential

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  • Narito Suzuki
  • Chikara Furusawa
  • Kunihiko Kaneko

Abstract

The lack of understanding of stem cell differentiation and proliferation is a fundamental problem in developmental biology. Although gene regulatory networks (GRNs) for stem cell differentiation have been partially identified, the nature of differentiation dynamics and their regulation leading to robust development remain unclear. Herein, using a dynamical system modeling cell approach, we performed simulations of the developmental process using all possible GRNs with a few genes, and screened GRNs that could generate cell type diversity through cell-cell interactions. We found that model stem cells that both proliferated and differentiated always exhibited oscillatory expression dynamics, and the differentiation frequency of such stem cells was regulated, resulting in a robust number distribution. Moreover, we uncovered the common regulatory motifs for stem cell differentiation, in which a combination of regulatory motifs that generated oscillatory expression dynamics and stabilized distinct cellular states played an essential role. These findings may explain the recently observed heterogeneity and dynamic equilibrium in cellular states of stem cells, and can be used to predict regulatory networks responsible for differentiation in stem cell systems.

Suggested Citation

  • Narito Suzuki & Chikara Furusawa & Kunihiko Kaneko, 2011. "Oscillatory Protein Expression Dynamics Endows Stem Cells with Robust Differentiation Potential," PLOS ONE, Public Library of Science, vol. 6(11), pages 1-15, November.
  • Handle: RePEc:plo:pone00:0027232
    DOI: 10.1371/journal.pone.0027232
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