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Zygotic Development And Stem Cell Formation

Zygotic Development And Stem Cell Formation

The development of all multicellular organisms starts with the fusion of haploid cells called sperm and egg to form a diploid zygote. A zygote is a totipotent cell that can develop into a complete organism. The zygote undergoes cell division or cleavage to form an 8-cell mass. Until this stage, the cells are spherical, loosely attached, and remain totipotent. Totipotent cells are capable of developing both the embryonic and the extraembryonic tissues. However, as they continue to divide, they...

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Related Experiment Video

Updated: Apr 19, 2026

Derivation of Mouse Trophoblast Stem Cells from Blastocysts

Derivation of Mouse Trophoblast Stem Cells from Blastocysts

Published on: June 8, 2010

Mouse and human blastocyst-derived stem cells: vive les differences.

Janet Rossant¹

¹Program in Developmental and Stem Cell Biology, Hospital for Sick Children, Peter Gilgan Centre for Research and Learning, 686 Bay Street, Toronto, Ontario, Canada M5G OA4 Department of Molecular Genetics, University of Toronto, Peter Gilgan Centre for Research and Learning, 686 Bay Street, Toronto, Ontario, Canada M5G OA4 janet.rossant@sickkids.ca.

Development (Cambridge, England)

|December 18, 2014

Summary

This summary is machine-generated.

Conserved vertebrate development, particularly the phylotypic stage, informs advances in pluripotent stem cell differentiation. Understanding early human development differences is key to improving stem cell therapies.

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Derivation of Mouse Trophoblast Stem Cells from Blastocysts

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Derivation of Stem Cell Lines from Mouse Preimplantation Embryos

Derivation of Stem Cell Lines from Mouse Preimplantation Embryos

Published on: August 20, 2017

Area of Science:

Developmental biology
Stem cell research

Background:

Conserved vertebrate developmental pathways guide advances in pluripotent stem cell differentiation.
The phylotypic stage represents a highly conserved period of early body plan patterning.
Significant species divergence occurs before and after the phylotypic stage.

Purpose of the Study:

To explore how developmental differences between human and mouse at early stages impact stem cell lines.
To enhance the generation and manipulation of human stem cells and their derivatives.

Main Methods:

Comparative analysis of conserved vertebrate developmental pathways.
Investigation of early human and mouse embryonic development (blastocyst and post-implantation).

Main Results:

Early developmental differences between human and mouse embryos may explain variations in derived stem cell lines.
Insights from conserved developmental stages are crucial for stem cell applications.

Conclusions:

Understanding early human development is vital for advancing human stem cell technology.
Leveraging knowledge of conserved developmental pathways can improve therapeutic stem cell generation.