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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...

Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...

Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.

Lineage Commitment

Lineage Commitment

Commitment is the process whereby stem cells:

Stem Cell Culture

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...

Cellular Differentiation

Cellular Differentiation

How does a complex organism such as a human develop from a single cell? It all starts from a single fertilized egg which gives rise to a vast array of cell types, such as nerve cells, muscle cells, and epithelial cells that characterize the adult? Throughout development and adulthood, cellular differentiation leads cells to assume their final morphology and physiology. Differentiation is the process by which unspecialized cells become specialized to carry out distinct functions.
A zygote is a...

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Related Experiment Video

Updated: Jun 4, 2026

Differentiation of Enteric Nervous System Lineages from Human Pluripotent Stem Cells

Differentiation of Enteric Nervous System Lineages from Human Pluripotent Stem Cells

Published on: May 17, 2024

Human germ cell lineage differentiation from embryonic stem cells.

Kehkooi Kee¹, Renee A Reijo Pera

¹Center for Human Embryonic Stem Cell Research and Education, Institute for Stem Cell Biology and Regenerative Medicine, Department of Obstetrics and Gynecology, Stanford University, Palo Alto, CA 94304-5542, USA.

|March 2, 2011

Summary

Human embryonic stem cells (hESCs) can be induced to differentiate into germ cells using bone morphogenetic proteins (BMPs). This method aids in studying human germ cell development and reproductive health.

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Differentiation and Characterization of Neural Progenitors and Neurons from Mouse Embryonic Stem Cells

Differentiation and Characterization of Neural Progenitors and Neurons from Mouse Embryonic Stem Cells

Published on: May 15, 2020

Area of Science:

Developmental biology
Stem cell research
Reproductive medicine

Background:

Human germ cell development is crucial for reproductive health but is difficult to study due to biological and ethical constraints.
Knowledge of human germ cell development largely relies on studies from model organisms.
Human embryonic stem cells (hESCs) offer a promising in vitro model for investigating germ cell formation and differentiation.

Purpose of the Study:

To describe a protocol for inducing germ cell differentiation from hESCs in vitro.
To facilitate the study of human germ cell development mechanisms.
To explore the role of specific growth factors in germ cell differentiation.

Main Methods:

Utilizing human embryonic stem cells (hESCs) as a model system.
Supplementing hESC differentiation medium with specific bone morphogenetic proteins (BMPs): BMP4, BMP7, and BMP8b.
Inducing germ cell differentiation through controlled in vitro culture conditions.

Main Results:

Demonstrated successful induction of germ cell differentiation from hESCs.
Observed that BMPs significantly enhance germ cell differentiation from hESCs in vitro.
Established a protocol applicable for studying human germ cell development.

Conclusions:

Bone morphogenetic proteins (BMPs) are effective in promoting germ cell differentiation from hESCs.
This protocol provides a valuable tool for in vitro studies of human germ cell development.
The findings contribute to understanding reproductive health and potential tumorigenesis related to germ cells.