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From epithelial remodelling to carcinogenesis.

Leszek Satora1, Jennifer Mytych2, Anna Bilska-Kos3

  • 1Pomeranian Center of Clinical Toxicology Kartuska 4/6, 80-104, Gdansk, Poland.

Progress in Biophysics and Molecular Biology
|August 6, 2019
PubMed
Summary
This summary is machine-generated.

The tissue organization field theory proposes cancer develops like embryonic development. Studying gut breathing fish reveals how hypoxia and EGFR/HIF signaling influence epithelial cell growth, offering insights into carcinogenesis.

Keywords:
CarcinogenesisEGFREpithelial remodellingGut breathing fishHIF 1HypoxiaTOFT theory

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Area of Science:

  • Oncology
  • Developmental Biology
  • Comparative Physiology

Background:

  • The tissue organization field theory (TOFT) posits carcinogenesis mirrors embryonic organogenesis.
  • Epithelial 'morphological remodelling' under hypoxia in gut breathing fish (GBF) shares similarities with cancer development.

Purpose of the Study:

  • To investigate the relationship between epidermal growth factor receptor (EGFR), hypoxia-inducible factor (HIF), and oxygen states (hypoxia/normoxia) in GBF.
  • To understand the steering mechanisms of squamous epithelium proliferation in GBF under varying oxygen conditions.
  • To enhance the understanding of carcinogenesis through comparative analysis with GBF models.

Main Methods:

  • Comparative analysis of epithelial remodeling in GBF under hypoxic and normoxic conditions.
  • Investigating the roles of EGFR and HIF signaling pathways in response to oxygen levels.
  • Utilizing GBF as a model organism to study fundamental processes of epithelial proliferation.

Main Results:

  • Hypoxia induces morphological changes in GBF epithelium resembling early stages of carcinogenesis.
  • EGFR and HIF signaling pathways are implicated in mediating the epithelial response to hypoxia.
  • GBF model demonstrates a link between tissue organization, hypoxia, and squamous epithelium proliferation.

Conclusions:

  • The study supports TOFT by highlighting parallels between embryonic development and carcinogenesis.
  • Understanding hypoxia-driven epithelial changes in GBF provides crucial insights into cancer initiation.
  • Targeting EGFR and HIF pathways in hypoxic conditions may offer novel therapeutic strategies for squamous cell carcinomas.