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Updated: Sep 7, 2025

A Mouse Fetal Skin Model of Scarless Wound Repair
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Miniaturized Bioengineered Models for Preterm Fetal Membrane Healing.

Flurina Famos1, Eva Avilla-Royo1,2, Ladina Vonzun1,3

  • 1Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland.

Fetal Diagnosis and Therapy
|June 16, 2022
PubMed
Summary

Researchers developed a novel miniaturized model to study fetal membrane (FM) healing. Platelet-derived growth factor BB (PDGF-BB) was shown to promote preterm FM cell migration in this model, offering new therapeutic possibilities.

Keywords:
AmnionEx vivo modelsFetal membranesIatrogenic preterm prelabor rupture of fetal membranesPreterm delivery

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Area of Science:

  • Biomedical Engineering
  • Regenerative Medicine
  • Obstetrics

Background:

  • Fetal membrane (FM) healing after fetoscopic interventions remains poorly understood.
  • The absence of adequate miniaturized models hinders the development of treatments for FM healing.
  • Lack of small-scale tissue models limits the study of preterm FM functions.

Purpose of the Study:

  • To develop novel miniaturized ex vivo models for studying fetal membrane healing.
  • To investigate the potential of platelet-derived growth factor BB (PDGF-BB) in promoting preterm FM cell migration.
  • To establish a platform for evaluating therapeutic strategies for FM healing.

Main Methods:

  • Collected fetal membranes (FMs) from planned cesarean deliveries.
  • Developed ex vivo models using engineered biomaterials to study FM healing.
  • Evaluated the effect of PDGF-BB on cell migration from preterm and term FMs.

Main Results:

  • Fetal membranes were successfully cultured ex vivo for up to 14 days.
  • Cell migration into FM defects was less than migration into the biomaterial.
  • PDGF-BB significantly promoted the migration of preterm amnion cells in a miniaturized model.

Conclusions:

  • A novel miniaturized model for preterm tissue was successfully developed.
  • Demonstrated that PDGF-BB enhances preterm FM cell migration within a 3D biomaterial environment.
  • This model provides a new tool for studying preterm FM healing and developing treatments.