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Modeling Paracrine Noncanonical Wnt Signaling In Vitro
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Cell polarity control by Wnt morphogens.

Chung-Kuan Chen1, Chun-Liang Pan2

  • 1Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan; Program in Biomedical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.

Developmental Biology
|April 24, 2022
PubMed
Summary
This summary is machine-generated.

Wnt glycoproteins are crucial for cell polarity, guiding cell division, migration, and neuronal development. This review highlights their roles, particularly in Caenorhabditis elegans, for understanding developmental biology.

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Molecular Biology

Background:

  • Cell polarity, essential for cellular function, is influenced by intrinsic and extrinsic factors.
  • Wnt glycoproteins, secreted morphogens, regulate cell fate and axon guidance.
  • Emerging evidence indicates Wnts also play a role in instructing cell polarization.

Purpose of the Study:

  • To review the literature on cell polarity control by Wnt glycoproteins.
  • To emphasize the role of Wnts in cell polarity using Caenorhabditis elegans as a model.
  • To summarize recent advances and identify unsolved issues in Wnt-mediated cell polarity.

Main Methods:

  • Literature review of studies on Wnt glycoproteins and cell polarity.
  • Focus on in vivo studies in Caenorhabditis elegans to verify polarity-inducing factors.
  • Analysis of Wnt involvement in asymmetric cell division, neuroblast migration, and axon-dendrite specification.

Main Results:

  • Wnts act as directional signals in both embryonic and postembryonic cell lineages, instructing mitotic asymmetry.
  • In C. elegans, Wnts polarize neuroblasts, controlling their directional migration.
  • Wnts specify axon-dendrite polarity in postmitotic neurons by providing spatial instructions.

Conclusions:

  • Wnt glycoproteins are critical regulators of cell polarity across various developmental contexts.
  • Studies in C. elegans demonstrate the in vivo importance of Wnts in directing cell asymmetry and neuronal development.
  • Further research is needed to fully elucidate the mechanisms and scope of Wnt-mediated cell polarity control.