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Related Experiment Video

Updated: Jun 27, 2026

Using Ex Vivo Upright Droplet Cultures of Whole Fetal Organs to Study Developmental Processes during Mouse Organogenesis

Using Ex Vivo Upright Droplet Cultures of Whole Fetal Organs to Study Developmental Processes during Mouse Organogenesis

Published on: October 21, 2015

Endothelial cell migration directs testis cord formation.

Alexander N Combes¹, Dagmar Wilhelm, Tara Davidson

¹Division of Molecular Genetics and Development, Institute for Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.

Developmental Biology

|December 2, 2008

Summary

This summary is machine-generated.

Testis cord formation requires migrating endothelial cells, not peritubular myoid cells, from the mesonephros. Blocking endothelial cell migration disrupts testis cord development, revealing their crucial role in testis organogenesis.

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Organ Culture and Whole Mount Immunofluorescence Staining of Mouse Wolffian Ducts

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Published on: January 13, 2017

Area of Science:

Developmental biology
Cell biology
Reproductive biology

Background:

Mammalian testis determination involves molecular cues but lacks understanding of cellular interactions for functional testis development.
Testis cord formation was previously thought to involve immigrant peritubular myoid cells from the mesonephros.

Purpose of the Study:

To investigate the cellular origin and function of immigrant cells in mammalian testis cord formation.
To determine the role of endothelial cells in the development of testis cords and interstitial compartments.

Main Methods:

Recombinant organ culture of developing testes.
Immunohistochemistry and cell tracking to identify immigrant cell types.
Inhibition of endothelial cell migration using blocking antibodies against VE-cadherin.

Main Results:

Immigrant cells crucial for testis cord formation were identified as endothelial cells, not peritubular myoid cells.
Blocking endothelial cell migration and vascular organization with anti-VE-cadherin antibodies significantly disrupted testis cord development.
These findings challenge previous assumptions about the cellular players in testis cord formation.

Conclusions:

Endothelial cell migration is essential for the formation of testis cords during mammalian organogenesis.
Endothelial cells play a broader, previously underappreciated role in establishing tissue architecture in developing organs.
This study redefines the cellular mechanisms underlying testis cord development.