Related Experiment Video
Updated: Jul 26, 2026

09:03
Profiling Individual Human Embryonic Stem Cells by Quantitative RT-PCR
Published on: May 29, 2014
Characterization and differentiation of human embryonic stem cells
M K Carpenter1, E Rosler, M S Rao
1Geron Corporation, Menlo Park, California 94025, USA. mcarpenter@geron.com
Cloning and Stem Cells
|April 26, 2003
Summary
Human embryonic stem (hES) cells offer a stable and expandable cell source for regenerative medicine. These pluripotent stem cells maintain normal genetics and can differentiate into various cell types, overcoming limitations in cell replacement therapies.
Area of Science:
- Stem cell biology
- Regenerative medicine
- Cell therapy
Background:
- Cell replacement therapies are hindered by insufficient cell quantities.
- Human embryonic stem (hES) cells present a potential solution due to their proliferative capacity.
Purpose of the Study:
- To assess the stability and differentiation potential of hES cell lines for therapeutic applications.
- To evaluate hES cells as a source for large-scale cell generation.
Main Methods:
- Characterization of multiple hES cell lines maintained in vitro for extended periods.
- Analysis of karyotypic and phenotypic stability, including marker expression.
- Assessment of differentiation capacity into various cell lineages.
Main Results:
- hES cell lines demonstrated karyotypic and phenotypic stability after long-term culture.
- Consistent expression of key pluripotent markers (SSEA-4, Tra-1-60, Tra-1-81, OCT-4) was observed.
- hES cells successfully differentiated into derivatives of all three germ layers, including cardiomyocytes and neural cells.
Conclusions:
- hES cells are karyotypically and phenotypically stable, suitable for long-term culture.
- Their extensive differentiation potential supports their use in regenerative medicine.
- hES cells represent a promising source for cell replacement therapies.
Related Concept Videos
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.
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...
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...
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...
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...

