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ZIC3 in Heterotaxy.

Helen M Bellchambers1, Stephanie M Ware2,3

  • 1Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.

Advances in Experimental Medicine and Biology
|February 15, 2018
PubMed
Summary

ZIC3 gene mutations cause X-linked heterotaxy, disrupting organ laterality. This study explores ZIC3

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Area of Science:

  • Developmental Biology
  • Genetics
  • Human Physiology

Background:

  • X-linked heterotaxy is a congenital disorder characterized by abnormal left-right asymmetry of internal organs.
  • ZIC3 mutations are a known cause of heterotaxy, but the underlying molecular mechanisms remain unclear.
  • Defects in early left-right axis formation, potentially involving the node and cilia, are implicated.

Purpose of the Study:

  • To elucidate the molecular mechanisms by which ZIC3 mutations lead to heterotaxy.
  • To investigate the role of ZIC3 in key developmental signaling pathways crucial for left-right patterning.
  • To consolidate current understanding of ZIC3 function in early development and its link to heterotaxy.

Main Methods:

  • Review of existing literature on ZIC3 function, heterotaxy, and developmental signaling pathways.
Keywords:
CiliaGastrulationLeft-right patterningMutationNodePlanar cell polarity

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  • Analysis of model organism studies and gene expression data related to ZIC3.
  • Integration of data on the node and cilia abnormalities in ZIC3-related heterotaxy.

    • Main Results:

    • ZIC3 mutations disrupt the earliest stages of left-right axis formation.
    • ZIC3 plays a role in multiple signaling pathways essential for establishing organ laterality.
    • Abnormalities in the node and cilia are associated with ZIC3 loss-of-function, but the precise molecular link requires further investigation.

    Conclusions:

    • ZIC3 is critical for establishing left-right asymmetry during embryonic development.
    • Understanding ZIC3's role in signaling pathways is key to deciphering heterotaxy pathogenesis.
    • Further research is needed to fully unravel the molecular basis of ZIC3-related heterotaxy.