Related Experiment Videos
Properties of extra-embryonic ectoderm isolated from postimplantation mouse embryos
Journal of Embryology and Experimental Morphology
|June 1, 1977
Summary
Mouse extra-embryonic ectoderm can develop into trophoblast giant cells in vitro and ectopic sites. This finding supports a shared trophectoderm origin for both extra-embryonic ectoderm and ectoplacental cone tissues.
Area of Science:
- Developmental biology
- Embryology
- Cell biology
Background:
- The trophectoderm of the blastocyst is the precursor to extra-embryonic tissues.
- The differentiation potential of early embryonic tissues is a key area of developmental research.
Purpose of the Study:
- To investigate the differentiation capacity of extra-embryonic ectoderm from later stage mouse embryos.
- To compare the in vitro and in vivo differentiation potential of this tissue.
Main Methods:
- Isolation of extra-embryonic ectoderm from 8.5-day post coitum mouse embryos.
- Culture of isolated cells in vitro.
- Grafting of isolated cells to ectopic sites.
Main Results:
- Extra-embryonic ectoderm formed cells with trophoblast giant cell morphology.
- These cells were observed both in vitro and in ectopic sites.
- The observed differentiation mirrored that of ectoplacental cone tissue.
Conclusions:
- Extra-embryonic ectoderm retains differentiation potential into trophoblast giant cells even at later developmental stages.
- These findings support the hypothesis that both extra-embryonic ectoderm and ectoplacental cone originate from the trophectoderm.