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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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Blogs for Stem Cells

Stem-Cell-Blog

Stem cell blogs supports research, treatments and therapy using stem cell derived technologies that do not destroy human life.www.stem-cell-blog.com/

Stem Cells Blog

Stem Cells Blog. What's the Buzz??? Back to Main Page ... Posted by Stem Cells Blog at 10/29/2008 6:24 AM | Add Comment. Case Studies in SCT by Dr. Molnar ...blog.stemcellsblog.com/

California Stem Cell Report

The Niche, a stem cell blog by Monya Baker of Nature magazine, with commentary ... Stem Cell Battles -- a blog written by patient advocate Don C. Reed ...californiastemcellreport.blogspot.com/

Stem Cell Research Blog

Stem Cell Research Blog. Ani13 Apr 2009 12:21 pm ... This blog will aim to educate people in simple words about stem cell research ...stemcell.taragana.net/

China Stem Cell News

News on Stem Cell treatment and research in China. Read about patient experiences, blogs and treatment updates for treatable disorders such as ONH, ROP, heart ...www.stemcellschina.com/

Wikipedia About Stem Cells

Mouse%20embryonic%20stem%20cells.jpg

Human%20embryonic%20stem%20cell%20colony%20phase.jpg

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.

Properties

The classical definition of a stem cell requires that it possess two properties:

  • Self-renewal - the ability to go through numerous cycles of cell division while maintaining the undifferentiated state.
  • Potency - the capacity to differentiate into specialized cell types. In the strictest sense, this requires stem cells to be either totipotent or pluripotent - to be able to give rise to any mature cell type, although multipotent or unipotent progenitor cells are sometimes referred to as stem cells.

Potency definitions

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  • Totipotent (a.k.a omnipotent) stem cells can differentiate into embryonic and extraembryonic cell types. Such cells can construct a complete, viable, organism. These cells are produced from the fusion of an egg and sperm cell. Cells produced by the first few divisions of the fertilized egg are also totipotent.Fact: date=November 2008
  • Pluripotent stem cells are the descendants of totipotent cells and can differentiate into nearly all cells, i.e. cells derived from any of the three germ layers.
  • Multipotent stem cells can differentiate into a number of cells, but only those of a closely related family of cells.
  • Oligopotent stem cells can differentiate into only a few cells, such as lymphoid or myeloid stem cells.
  • Unipotent cells can produce only one cell type, their own, but have the property of self-renewal which distinguishes them from non-stem cells (e.g. muscle stem cells).

Identification

The practical definition of a stem cell is the functional definition - a cell that has the potential to regenerate tissue over a lifetime. For example, the gold standard test for a bone marrow or hematopoietic stem cell (HSC) is the ability to transplant one cell and save an individual without HSCs. In this case, a stem cell must be able to produce new blood cells and immune cells over a long term, demonstrating potency. It should also be possible to isolate stem cells from the transplanted individual, which can themselves be transplanted into another individual without HSCs, demonstrating that the stem cell was able to self-renew.

Images found for Stem Cells

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News about Stem Cells

Curiosities: When will stem cells yield treatments?

Wisconsin State JournalQ: When will we see cures or treatments from stem cells?http://www.madison.com/wsj/mad/top/446781

Experts use stem cells to grow new eggs in mice

CTV.caResearchers in China say they have managed to generate new eggs using stem cells from the ovaries of female mice. But the discovery is being met with skepticism.http://www.ctv.ca/servlet/ArticleNews/story/CTVNews/20090413...

Stem cells, new industry in Vietnam

Vietnam NetVietNamNet Bridge – Dr. Phan Toan Thang, a leading expert in stem cells at the Singapore National University and a representative of Singapore-based CellResearch Corporation, spoke with VietNamNet about stem-cell research in Vietnam.http://english.vietnamnet.vn/reports/2009/04/841612/

Patient Movement Forms In Opposition To FDA Position That The Patient's Own Stem Cells Are Drugs

BioresearchOnlineThe American Stem Cell Therapy Association (ASTCA) announced today the on-line publication of its patient web-site, www.safestemcells.org, which reflects the activities and opinions of patients driving the Safe Stem Cells NOW! movement.http://www.bioresearchonline.com/article.mvc/Patient-Movemen...

Stem cells generate new eggs

News 24 South AfricaResearchers say they have managed to generate new eggs using stem cells from the ovaries of female mice, taking a step towards addressing problems of female infertility.http://www.news24.com/News24/Technology/News/0,,2-13-1443_25...

News about Stem Cells

Clinton to stump for stem cells in Michigan

Detroit Free PressFormer President Bill Clinton is set to stop in Michigan to campaign for a state proposal that would loosen restrictions on embryonic stem cell research. Clinton has accepted the invitation of retail mogul and philanthropist A. Alfred Taubman to ... http://www.freep.com/article/20081010/NEWS15/81010031/1008/n...

Charter Medical Receives 510(k) Clearance for CELL-FREEZE(R) Cryogenic ...

MSN MoneyCentralCharter Medical Receives 510(k) Clearance for CELL-FREEZE(R) Cryogenic Storage Containers for Peripheral Blood Stem Cells October 7, 2008 4:14 PM EThttp://news.moneycentral.msn.com/provider/providerarticle.as...

University: Stem-cell study used falsified data

Seattle TimesThe University of Minnesota has concluded that falsified data were used in a 2001 article published by one of its researchers on adult stem cells. The school is asking that the article be retracted. The conclusion follows an 18-month investigation ... http://seattletimes.nwsource.com/html/businesstechnology/200...

Lokey Gives $75 Million to Create Nation's Largest Stem Cell Research ...

ForbesHe views stem cells as being at the heart of the biotech field. "At 81 -- I expect to go well past 90 -- I might see the benefits (of stem cell research). There's a chance," he said. "But the real application will be for the 38-year-old person who ... http://www.forbes.com/businesswire/feeds/businesswire/2008/1...

Billionaire helps to build U.S. largest stem cell research center at ...

Xinhua News AgencyStem cells are going to introduce an entirely new field of medicine for extending lives and improving the quality of life," Lokey said in a statement released by the medical school. Lokey's gift is one of the largest gifts even given to the ... http://news.xinhuanet.com/english/2008-10/07/content_1015940...

Search results for Stem Cells

Do No Harm: The Coalition of Americans for Research Ethics

How Adult Stem Cell Therapies Saved My Life: Medicine’s Best Kept Secret Can Save Your Life by Bernard van Zyl. More Information. USCCB Ads Go Nationwide!http://www.stemcellresearch.org/

University of Wisconsin Stem Cell and Regenerative Medicine Center

Listing of faculty involved in stem cell research and resources for prospective students, employees, and the interested public from university at Madison.http://www.stemcells.wisc.edu/

Stem Cells

Stem cells are cells that divide by mitosis to form either two stem cells, thus increasing the size of the stem cell "pool", or one daughter that goes on to differentiate, and one ... http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/S/Ste...

Stem Cell Biotherapy

copyright (2007 - 2008) Privacy Policy - Disclaimerhttp://www.stemcellbiotherapy.com/

Stem Cell Science Education

Stem cell bioscience education for biology teachers, science students, stem cell researchers, genomics, proteomics and life-science learning, including hematopoietic, cell ... http://www.stemcellresources.org/
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Scotland's Stem Cell Strategy

Scotland's Stem Cell StrategyHealth minister talks about partnering with U.S. companies on stem cell research.Flash - Video

Obama talks stem cells

Obama talks stem cellsPresident Obama discusses his views on stem cell research.Windows Media - Video

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Stem cells used for dog's arthritic leg(NECN/KTVX: Providence, Utah) - Skittish as a cat, Coty took cover at her vet's waiting room. She had been there before. A few weeks prior, the 12-year-old Alaskan Husky had a...Flash - Video

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G20 Could Stem ProtectionismThe G20 meeting is unlikely to produce any market-moving results, but could help to stem protectionism, Hugh Johnson, chairman & CIO of John...Flash - Video

How the Body Work: Anatomy of the B...

How the Body Work: Anatomy of the Brain StemThe brain stem , which is only two and a half inches long, is seen here cut from top to bottom and laid open, in a similar way to which a book is opened. The central dark area is...Flash - Video
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