Why not use Adult Stem Cells?

Very interesting, indeed.

Yahoo News: Researchers find stem cells for brain cancer:

WASHINGTON (Reuters) - Some types of brain cancer may start with specialized stem cells, researchers said in a report that could lead to new treatments for hard-to-treat brain tumors.

Studies in mice showed that certain incurable types of brain tumor may be initiated by the primitive stem cells, which are a kind of master cell for blood and tissue, they reported on Monday.

"Continued research into the biology of adult stem cells will aid in the understanding of how cancers originate and develop and may lead to possible new therapies for treating aggressive, currently incurable brain tumors," said Dr. Luis Parada of the University of Texas Southwestern Medical Center in Dallas, who led the study.

Writing in the journal Cancer Cell, Parada and colleagues said their findings support evidence that so-called adult stem cells may play a role in the development of some forms of cancer.

Stem cells share some properties with cancer cells, including an ability to live a very long time without self-destructing, as a normal cell does as it ages.

Adult stem cells are already programmed to become certain types of tissue. For example, bone marrow stem cells make various kinds of blood cells such as white blood cells, and can also become muscle when directed properly.

So, adult stem cells have actually proven useful, while Embryonic Stem Cell Research hasn't produced anything.