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Updated: Jul 18, 2026

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Enrichment and Purging of Human Embryonic Stem Cells by Detection of Cell Surface Antigens Using the Monoclonal Antibodies TG30 and GCTM-2
Published on: December 6, 2013
Characterization and evaluation of human embryonic stem cells.
1Geron Corporation, Menlo Par, California, USA.
Methods in Enzymology
|December 13, 2006
Summary
Human embryonic stem cells (hESCs) are vital for regenerative medicine and research. This chapter details their culture, characterization, and unique properties for future applications.
Area of Science:
- Stem Cell Biology
- Regenerative Medicine
- Developmental Biology
Background:
- Human embryonic stem cells (hESCs) hold significant promise for regenerative medicine, drug discovery, and understanding human development.
- Their effective use hinges on robust methods for derivation, maintenance, and characterization of undifferentiated cells.
Purpose of the Study:
- To summarize current advancements in human embryonic stem cell culture conditions.
- To provide detailed technical guidance for evaluating and characterizing hESCs.
Main Methods:
- Review of established and emerging hESC culture techniques.
- Description of key methods for assessing stem cell markers, karyotype stability, and telomerase activity.
- Guidance on differentiation potential assessment.
Main Results:
- Undifferentiated hESCs exhibit remarkable proliferation, stable karyotypes, characteristic marker expression, high telomerase activity, and broad differentiation capacity.
- Current culture conditions support the maintenance of these critical hESC properties.
Conclusions:
- Optimized culture and characterization are essential for harnessing the full potential of hESCs in biomedical research and therapeutic applications.
- This chapter serves as a technical resource for researchers working with hESCs.
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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...
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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.
Maintenance of the ES Cell State
The cells of the blastocyst inner cell mass only remain pluripotent for a short time. This state of pluripotency and self-renewal can be maintained in embryonic stem (ES) cell culture by adding specific chemicals or growth factors to ensure the cells can continue dividing and later differentiate into different cell types. In some cases, the cells are grown on a feeder layer of differentiated cells, which provides the growth factors and extracellular matrix components necessary for stem cell...
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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...
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Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
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