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What are the New Discoveries?

Human embryonic stem cells (hES cells) are cells that are self-renewing--virtually immortal--and have the capacity to develop into any or all tissue types in the human body. If medical scientists could gain the ability to turn on selected genes to grow selected tissues and organs for transplantation, hES cell-based therapies would revolutionize treatment of degenerative age-related diseases such as Parkinson's disease, diabetes, and congestive heart failure.

Two recent claims of laboratory triumph are relevant. First is the isolation of human embryonic stem cells (hES cells) by James Thomson, an associate veterinarian in the University of Wisconsin's Regional Primate Research Center. Thomson began with fertilized ova--spare embryos from in vitro fertilization (IVF) not placed in a uterus--and cultured them to the blastocyst stage, about four to six days. At this point he removed the outer shell of the blastocyst, separated out the individual cells, and placed them on a feeder tray. The cells divided. They reproduced themselves. Because these cells are as yet undifferentiated--that is, they are pluripotent and able to make any part of a human body--they are the cells from which other cells stem. Because they replicate themselves indefinitely, Thomson in effect created an immortal line of embryonic stem cells.James A. Thomson, Joseph Itskovitz-Eldor, Sander S. Shapiro, Michelle A. Waknitz, Jennifer J. Swiergiel, Vivienne S. Marshall, and Jeffrey M. Jones, "Embryonic Stem Cell Lines Derived from Human Blastocysts,"...

Second, John Gearhart, a professor of gynecology and obstetrics at Johns Hopkins University School of Medicine, drew human embryonic germ cells (hEG cells) from fetal gonadal tissue. These cells, when taken from an aborted fetus, resemble in nearly all respects the pluripotent stem cells described above.Michael J. Shamblott, Joyce Axelman, Shunping Wang, Elizabeth M. Bugg, John W. Littlefield, Peter J. Donovan, Paul D. Blumenthal, George R. Huggins, and John D. Gearhart, "Deriviation of Pluripotent...I will provide more detail on the Gearhart discovery in the description that follows.

Email link | Printer-friendly | Feedback | Contributed by: Dr. Ted Peters

Topic Sets Available

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E. Coli at the No Free Lunchroom
Engaging Extra-Terrestrial Intelligence: An Adventure in Astro-Ethics
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Evolution and Theology (GHC)
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The Expelled Controversy
Faith and Reason: An Introduction
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Francisco Ayala on Evolution

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Genetic Engineering and Food

Genetics and Ethics
Genetic Technologies - the Radical Revision of Human Existence and the Natural World

Genomics, Nanotechnology and Robotics
Getting Mind out of Meat
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God the Spirit - and Natural Science
Historical Examples of the Science and Religion Debate (GHC)
History of Creationism
Intelligent Design Coming Clean

Issues for the Millennium: Cloning and Genetic Technologies
Jean Vanier of L'Arche
Nano-Technology and Nano-ethics
Natural Science and Christian Theology - A Select Bibliography
Neuroscience and the Soul
Outlines of the Science and Religion Debate (GHC)

Perspectives on Evolution

Physics and Theology
Quantum Mechanics and Theology (GHC)
Questions that Shape Our Future
Reductionism (GHC)
Reintroducing Teleology Into Science
Science and Suffering

Scientific Perspectives on Divine Action (CTNS/Vatican Series)

Space Exploration and Positive Stewardship

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Current Stats: topics: >2600, links: >300,000, video: 200 hours.