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Phase Separation as a Driver of Stem Cell Organization and Function during Development.

Amalia S Parra1, Christopher A Johnston1

  • 1Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA.

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|December 22, 2023
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Summary
This summary is machine-generated.

Liquid-liquid phase separation (LLPS) organizes stem cells without membranes, impacting development. Aberrant LLPS may cause developmental diseases.

Keywords:
asymmetric cell divisioncell fatecell polaritychromatinphase separationspindle orientationstem cell

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Area of Science:

  • Cellular Biology
  • Developmental Biology
  • Biochemistry

Background:

  • Eukaryotic cell organization relies on membrane-bound organelles, but this doesn't fully explain cellular complexity.
  • Non-membrane-bound structures, including those formed by liquid-liquid phase separation (LLPS), are crucial for cellular functions.
  • LLPS is a ubiquitous mechanism for cellular organization, operating without lipid membranes and involving diverse protein and RNA complexes.

Purpose of the Study:

  • To review the impact of LLPS on stem cell organization and function during development.
  • To detail the roles of LLPS in key developmental processes like signaling, chromatin organization, gene expression, and asymmetric cell division.
  • To explore how LLPS contributes to stem cell adaptability, cell fate control, and potential links to developmental diseases.

Main Methods:

  • Literature review focusing on the role of LLPS in stem cell biology and development.
  • Analysis of existing research on LLPS mechanisms, including protein and RNA complex involvement.
  • Synthesis of findings related to LLPS in developmental signaling, chromatin, gene expression, and cell division.

Main Results:

  • LLPS provides a dynamic and adaptable mode of cellular organization for stem cells.
  • LLPS influences developmental signaling pathways, chromatin organization, and gene expression.
  • LLPS plays a critical role in asymmetric cell division and cell fate determination.

Conclusions:

  • LLPS is a fundamental process for stem cell organization and function throughout development.
  • The dynamic nature of LLPS allows stem cells to adapt and control cell fate.
  • Dysregulation of LLPS is implicated in developmental defects and diseases.