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Updated: Oct 5, 2025
12:09
Protocol for Human Blastoids Modeling Blastocyst Development and Implantation
Published on: August 10, 2022
6.8K
Early human embryonic development: Blastocyst formation to gastrulation.
Janet Rossant1, Patrick P L Tam2
1Hospital for Sick Children, University of Toronto, Toronto, ON, Canada; The Gairdner Foundation, Toronto, ON, Canada.
Developmental Cell
|January 25, 2022
Summary
Recent advances in culturing human embryos and stem-cell models offer new insights into early human embryogenesis. Key questions remain regarding the molecular mechanisms of lineage development and embryonic patterning.
Area of Science:
- Developmental Biology
- Stem Cell Biology
- Human Embryogenesis
Background:
- Renewed interest in human early embryonic development.
- Advances in in vitro culture conditions for blastocysts.
- Emergence of stem-cell-based models for early embryos.
Purpose of the Study:
- To review new insights into human embryogenesis.
- To discuss advances from in vitro embryo culture and stem-cell models.
- To outline unanswered questions in the field.
Main Methods:
- Review of recent scientific literature.
- Synthesis of findings from in vitro human embryo culture.
- Analysis of data from stem-cell-based embryo models.
Main Results:
- Improved in vitro culture conditions enhance blastocyst maintenance.
- Stem-cell models provide novel information on blastocyst and peri-implantation development.
- Significant progress has been made in understanding early human embryogenesis.
Conclusions:
- Technical advances have reinvigorated the study of human embryogenesis.
- Mechanisms of lineage development and patterning require further investigation.
- Future research should address the molecular pathways regulating these processes.
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