I think RepubCarrier makes a good point as well. Not using the cells for research will not make the eggs develop into a baby who will then go on to lead a happy life. Anyway, here’s some stem cell stories:
Bite Back
By Jocelyn Selim
DISCOVER Vol. 25 No. 12 | December 2004
In a major advance in custom-engineered body parts, a 56-year-old German man who lost his jaw to cancer grew a new one. Surgeon Patrick Warnke at the University of Kiel used computer-imaging software to fabricate a titanium-mesh mold that precisely matched the shape of the patient?s lost bone. Warnke then seeded the mold with bone stem cells from the man?s marrow and incubated it in his latissimus dorsi muscle, below the right shoulder blade. The marrow cells quickly filled the mesh with new bone. Seven weeks later, doctors surgically removed the mold and attached it to the remains of the cancer victim?s jaw. Four weeks after the operation, the patient (below)?who had only been able to slurp soft foods for the past nine years?was back on solids. ?His first meal was a bratwurst,? Warnke says. ?He really wanted that sausage.?
This marks the first time an entire bone has been replaced with a part grown in a mold. Surgeons normally must harvest replacement bone from elsewhere in the body, usually the lower leg. If a large amount of bone is needed, the procedure can do almost as much harm as good. It is also difficult to sculpt the bone precisely, so the implant generally leaves the patient disfigured. Warnke?s technique circumvents these limitations and could be adapted to work with other types of cells. ?This is just a proof-of-concept case. It will be necessary to do more operations and get an idea of the long-term prognosis before we say that the method is a success,? Warnke says. ?I do think that one day, especially with stem cell advances, we will be able to do this sort of thing routinely?perhaps even with joints or more complex organs.?
Can Stem Cells Cure Baldness?
By Jocelyn Selim
DISCOVER Vol. 25 No. 12 | December 2004
Patrick Stewart and James Gandolfini, take note. Biochemists led by Elaine Fuchs of Rockefeller University have isolated stem cells that may someday grow new hair on a bald head. This is more than a vanity project for the Rogaine set: The work could also lead to custom-grown skin grafts and a better understanding of how the body regenerates itself.
The skin?s ability to grow back after a wound led scientists to assume that it must contain stem cells, immature cells that can rapidly differentiate into many different types of tissue. Until now, however, nobody knew where such cells were located in the skin or how many kinds there might be.
Using fluorescent markers, Fuchs and her colleagues isolated two distinct populations of stem cells from mouse skin. The researchers then extracted the cells and grafted them onto genetically engineered hairless mice. Both cell populations caused the mice to develop thick patches of fur, along with all the other components of skin, including sweat and sebaceous glands.
These stem cells are different from the controversial ones extracted from embryos. ?Embryonic stem cells are pluripotent, meaning they have the ability to become any type of tissue,? Fuchs says. ?We know these stem cells are multipotent?they can become any epidermis-derived tissue?but beyond that, we don?t know.?
Fuchs is now working on isolating equivalent cells in humans. ?To really treat baldness, you?d have to understand all the chemical pathways cells use to tell each other when to grow,? she says. ?That could take a while.?
These were both taken from http://www.discover.com/issues/dec-04/rd/
To-Shin Do