Related topics: embryonic stem cells , cells , proceedings of the national academy of sciences , barack obama , bone marrow
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 cells
Bone marrow cells may significantly reduce risk of second heart attack
5 hours ago |
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Cells from heart attack survivors' own bone marrow reduced the risk of death or another heart attack when they were infused into the affected artery after successful stent placement, according to research reported in the ...
Supportive materials will help regenerate heart tissue (w/ Video)
6 hours ago |
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Bioengineers from University of California, San Diego are developing new regenerative therapies for heart disease. The work could influence the way in which regenerative therapies for cardiovascular and other diseases are ...
Gene therapy and stem cells save limb
6 hours ago |
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Blood vessel blockage, a common condition in old age or diabetes, leads to low blood flow and results in low oxygen, which can kill cells and tissues. Such blockages can require amputation resulting in loss of limbs. Now, ...
Autologous stem cell transplantation for soft tissue sarcoma: insufficient research into therapy
8 hours ago |
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Due to a lack of suitable studies, it is unclear whether patients with soft tissue sarcoma can benefit from autologous haematopoietic stem cell transplantation. With this type of therapy, some of the patient's own (autologous) ...
Umbilical stem cells may help recover lost vision for those with corneal disease
9 hours ago |
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New research from the University of Cincinnati (UC) may help in the recovery of lost vision for patients with corneal scarring.
Researchers demonstrate that stem cells can be engineered to kill HIV
Medicine & Health / HIV & AIDS
13 hours ago |
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(PhysOrg.com) -- UCLA AIDS Institute researchers have for the first time demonstrated that human blood stem cells can be engineered to target and kill HIV-infected cells.
Spices halt growth of breast stem cells, study finds
Dec 07, 2009 |
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A new study finds that compounds derived from the spices turmeric and pepper could help prevent breast cancer by limiting the growth of stem cells, the small number of cells that fuel a tumor's growth.
Study Results Suggest Adult Stem Cells May Help Repair Muscle Cells Damaged by Heart Attack
Dec 07, 2009 |
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(PhysOrg.com) -- Adult stem cells may help repair heart tissue damaged by heart attack according to the findings of a new study to be published in the December 8 issue of the Journal of the American College of Cardiology. Resul ...
