Summarize the scientific and ethical advantages and disadvantages of using embryonic stem cells versus adult stem cells for stem cell therapies
What will be an ideal response?
Scientific Ethical
Advantages Disadvantages Advantages Disadvantages
Embryonic stem cells 1 . Because embryonic stem cells have to form all of the 200-plus different cell types that make up the tissues in our body (pluripotent), most proposed therapies use these cells.
2 . Stem cells can be removed from an embryo and grown in the laboratory to establish an embryonic stem-cell line. • Rejection of transplanted cells by the patient's immune system. N/A Harvesting embryonic stem cells destroys a human embryo.
Adult stem cells • Because the stem cells originate from the patient, there is no rejection of the transplanted cells by the immune system. • Because adult stem cells have only limited developmental potential (multipotent), they can only be used to treat a relatively small number of diseases.
• Adult stem cells are rare and difficult to isolate.
• Adult stem cells are more difficult to grow and reprogram than embryonic cells. • Adult stem-cell therapy does not involve embryo destruction. N/A
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