Related Experiment Video
Updated: Aug 4, 2026
10:25
Time-lapse Imaging of Neuroblast Migration in Acute Slices of the Adult Mouse Forebrain
Published on: September 12, 2012
Time-lapse analysis of living mouse germ cell migration
K A Molyneaux1, J Stallock, K Schaible
1Division of Developmental Biology, Children's Hospital Research Foundation, Cincinnati, Ohio 45229, USA.
Developmental Biology
|January 11, 2002
Summary
Primordial germ cells (PGCs) in mouse embryos exhibit distinct migration phases, moving from the gut to genital ridges directionally by E10.5. Their movement slows and becomes sex-dependent by E11.5.
Area of Science:
- Developmental Biology
- Embryology
- Cell Biology
Background:
- Primordial germ cells (PGCs) originate during gastrulation in mouse embryos, separate from the developing gonads.
- Previous studies suggested active PGC migration to gonads, but direct observation was limited by embryo opacity.
Purpose of the Study:
- To directly observe and describe the dynamic process of PGC migration in living mouse embryos.
- To identify distinct phases and directional movements of PGCs during their journey to the genital ridges.
Main Methods:
- Utilized confocal microscopy to film living PGCs expressing eGFP in embryonic mouse tissue slices.
- Observed PGC behavior across different developmental stages from E9.0 to E11.5.
Main Results:
- Identified four distinct phases of PGC migration: immotility within the gut (until E9.0-E9.5), rapid exit from the gut without directional movement (E9.0-E9.5), directed migration to genital ridges (E10.0-E10.5), and sex-dependent slowing (E11.5).
- Challenged the prevailing model by showing minimal migration of gut mesentery PGCs into genital ridges at E10.5.
Conclusions:
- Provided the first formal, dynamic description of mouse PGC migration phases.
- Demonstrated that PGC migration is a complex, multi-stage process with specific timing and directional cues, influenced by embryonic sex later in development.
