Related topics: stem cells
Stem cell
hideStem cells are cells found in most, if not all, multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s. The two broad types of mammalian stem cells are: embryonic stem cells that are isolated from the inner cell mass of blastocysts, and adult stem cells that are found in adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin or intestinal tissues.
Stem cells can now be grown and transformed into specialized cells with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture. Highly plastic adult stem cells from a variety of sources, including umbilical cord blood and bone marrow, are routinely used in medical therapies. Embryonic cell lines and autologous embryonic stem cells generated through therapeutic cloning have also been proposed as promising candidates for future therapies.
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News tagged with stem cell research
Potential new 'twist' in breast cancer detection
Dec 04, 2009 |
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Working with mice, scientists at Johns Hopkins publishing in the December issue of Neoplasia have shown that a protein made by a gene called "Twist" may be the proverbial red flag that can accurately distinguish stem cells ...
New stem cell lines approved for tax-paid research
Dec 02, 2009 |
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(AP) -- Scientists can start using taxpayer dollars to do research with 13 batches of embryonic stem cells and the government says dozens more cell lines should be available soon, opening a new era for the potentially life-saving ...
Measure to change U. of Neb. stem-cell rule fails (Update 2)
Nov 21, 2009 |
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(AP) -- The University of Nebraska's governing board on Friday voted not to place tighter restrictions on embryonic stem cell research than those outlined under federal guidelines, which were expanded after ...
Embryonic stem cell therapy closer to human trials
Nov 19, 2009 |
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Embryonic stem cell therapy got a step closer to the clinic Thursday after US researchers said they filed a request for government approval of human trials.
Search results for stem cell research
Cholesterol-lowering drugs also may protect stem cell transplant patients from GVHD
Dec 04, 2009 |
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Cholesterol-lowering drugs known as statins are among the most prescribed medicines in the U.S. Now a new study by researchers at Fred Hutchinson Cancer Research Center indicates that statins may protect stem cell transplant ...
Turning genetic trash to treasure
Dec 03, 2009 |
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(PhysOrg.com) -- John Rinn, a researcher at Harvard Medical School, the Beth Israel Deaconess Medical Center, and the Broad Institute, overcame a rocky start in life through a passion for biology and discovered ...
Scientists rescue visual function in rats using induced pluripotent stem cells
Dec 03, 2009 |
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An international team of scientists has rescued visual function in laboratory rats with eye disease by using cells similar to stem cells. The research shows the potential for stem cell-based therapies to treat ...
Discovery makes brain tumor cells more responsive to radiation
Dec 02, 2009 |
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Duke University Medical Center researchers have figured out how stem cells in the malignant brain cancer glioma may be better able to resist radiation therapy. And using a drug to block a particular signaling pathway in these ...
Bone Marrow Stem Cells May Prevent Chronic Lung Disease
Dec 01, 2009 |
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(PhysOrg.com) -- Researchers at Children's Hospital Boston have discovered a possible way to protect the fragile lungs of premature babies by using stem cells harvested from bone marrow. In experiments on laboratory mice, ...
New source discovered for the generation of nerve cells in the brain
Medicine & Health / Neuroscience
Dec 01, 2009 |
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The research group of Professor Magdalena Gotz of Helmholtz Zentrum Munchen and Ludwig-Maximilians-Universitat Munich (Germany) has made a significant advance in understanding regeneration processes in the brain. The researchers ...
New stem cell technology leads to better treatment for complicated bone fractures
Nov 30, 2009 |
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A novel technology involving use of stem cells, developed by Hebrew University of Jerusalem researchers, has been applied to provide better and rapid healing for patients suffering from complicated bone fractures.
Japan scientists attack govt research cut plans
Nov 26, 2009 |
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Top Japanese scientists, including four Nobel laureates, have criticised the new government for plans to slash research budgets, warning the country will loose its high-tech edge.
Polyphenols and polyunsaturated fatty acids boost the birth of new neurons
Nov 24, 2009 |
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Universitat Autňnoma de Barcelona (UAB, Spain) researchers have confirmed that a diet rich in polyphenols and polyunsaturated fatty acids, patented as an LMN diet, helps boost the production of the brain's stem cells ...
Tissue tension regulates tumor progression
Nov 23, 2009 |
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(PhysOrg.com) -- UCSF scientists have shown for the first time that the rigidity of a tissue can induce cancer. The research team identified an enzyme that is crucial for regulating tissue stiffness and demonstrated that ...
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