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Gastrulation01:56

Gastrulation

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Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
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Zygotic Development And Stem Cell Formation01:10

Zygotic Development And Stem Cell Formation

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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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Cleavage and Blastulation01:33

Cleavage and Blastulation

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After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
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Embryonic Connective Tissues01:20

Embryonic Connective Tissues

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During early development, the embryo forms two types of connective tissues— the mesenchyme and mucoid connective tissue.
The mesenchyme is the first connective tissue that emerges in the developing embryo. It consists of loosely arranged multipotent mesenchymal cells and reticular fibers in the extracellular matrix. This loose arrangement allows easy migration of cells, which is essential for germ layer positioning, patterning, and organ morphogenesis during embryonic development.
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Related Experiment Video

Updated: Oct 11, 2025

Isolation and Derivation of Mouse Embryonic Germinal Cells
14:01

Isolation and Derivation of Mouse Embryonic Germinal Cells

Published on: October 22, 2009

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Tissue and cell interactions in mammalian PGC development.

Christopher B Cooke1,2,3, Naomi Moris3

  • 1Department of Genetics, University of Cambridge, Cambridge, CB2 3EH, UK.

Development (Cambridge, England)
|December 2, 2021
PubMed
Summary
This summary is machine-generated.

Mouse primordial germ cells (PGCs) require tissue interactions, not just signaling, for proper development and maturation. This inter-tissue dependence is crucial for generating functional germ cells and improving in vitro germ cell generation.

Keywords:
Co-developmentNichePrimordial germ cellTissue level

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Differentiation of Newborn Mouse Skin Derived Stem Cells into Germ-like Cells In vitro
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Differentiation of Newborn Mouse Skin Derived Stem Cells into Germ-like Cells In vitro

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Last Updated: Oct 11, 2025

Isolation and Derivation of Mouse Embryonic Germinal Cells
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Generation of Human Primordial Germ Cell-like Cells at the Surface of Embryoid Bodies from Primed-pluripotency Induced Pluripotent Stem Cells
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Differentiation of Newborn Mouse Skin Derived Stem Cells into Germ-like Cells In vitro

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Area of Science:

  • Developmental Biology
  • Cell Biology
  • Reproductive Biology

Background:

  • Primordial germ cells (PGCs) are essential precursors for gamete formation.
  • In vitro derivation of PGC-like cells (PGCLCs) is possible but full maturation remains a challenge.
  • Existing research focuses on signaling pathways for PGC development.

Purpose of the Study:

  • To explore the role of intercellular and tissue-level interactions in mouse PGC development.
  • To investigate how tissue interactions influence PGC maturation beyond signaling.
  • To understand the implications for in vitro PGCLC generation.

Main Methods:

  • Review of experimental evidence on PGC-neighboring cell interactions.
  • Analysis of PGC development in the context of tissue organization.
  • Discussion of existing literature on PGCLC derivation.

Main Results:

  • PGC development and maturation depend on cellular and tissue-level regulation.
  • Intercellular interactions regulate PGC proportions and positioning within the embryo.
  • Tissue interactions provide a dynamic niche essential for PGC development.

Conclusions:

  • Tissue interactions play a critical role in PGC development, extending beyond inductive signaling.
  • Inter-tissue dependence is crucial for functional germ cell maturation.
  • Understanding these interactions may enhance in vitro generation of mammalian PGCLCs.