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Updated: Aug 13, 2026
09:36
Culture and Maintenance of Human Embryonic Stem Cells
Published on: December 22, 2009
Research ethics, science policy, and four contexts for the stem cell debate
1Institute on Biotechnology, Chicago, IL, USA.
Summary
Ethical debates surrounding embryonic stem cell research involve diverse viewpoints on legality and funding. Exploring six distinct policy options and crucial issues like consent and time limits is vital for responsible advancement in biosciences.
Area of Science:
- Biomedical Ethics
- Biosciences Policy
Background:
- Significant ethical disagreements exist regarding human embryonic stem cell research.
- Public policy plays a critical role in regulating legal and funded research in biosciences.
Framework:
- Six distinct policy options address the use of human embryos in research.
- Key considerations include the use of excess in vitro embryos versus creating new ones, and the permissibility of clonal embryos.
Implementation:
- Policies must address consent for embryo use.
- Time limits for embryo utilization present additional complex issues.
Implications:
- Advancements in biotechnology necessitate a global dialogue on scientific potential and social responsibility.
- Balancing scientific progress with ethical considerations is crucial for the future of human health and society.
Related Concept Videos
00:57Embryonic 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...
00:58Embryonic 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.
01:17Stem 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...
01:27Source And Potency Of Stem Cells
Stem cells are undifferentiated cells with extensive self-renewal properties that help them maintain their population during the fetal and adult stages of life. They can specialize in all cell types of the human body. However, their differential potential may vary and can be classified into five types. Stem cells can be (1) Totipotent, (2) Pluripotent, (3) Multipotent, (4) Oligopotent, and (5) Unipotent. Each stem cell has a specific origin; the fertilized egg or zygote is a totipotent cell and...
01:26Stem Cell Niche
The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
01:56Ethics in Research
Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.