Master cells
May. 31st, 2003 02:09 amStem Cell "Master Gene" Found
Scientists yesterday said they have discovered a long-sought "master gene" in embryonic stem cells that is largely responsible for giving those cells their unique regenerative and therapeutic potential.
The discovery of the gene brings scientists closer to a holy grail of biology: the ability to turn ordinary cells into those that possess all the biomedical potency of human embryonic stem cells, eliminating the need to destroy embryos to get them.
Researchers cautioned that the new work -- details of which were published in today's issue of the journal Cell -- will not bring a quick end to the political controversy over human embryo research. Some said research involving human embryos will be more important than ever for at least a while, as scientists turn their attention to the master gene and how it works in its natural, embryonic environment.
But experts said the work -- conducted mostly on mouse embryo cells but also on human equivalents -- is already revealing more about the mysterious capacity of embryonic stem cells to retain indefinitely their youthful potential to become any kind of cell the body might need. That phenomenon is known as pluripotency.
In recognition of that power, the researchers have named the gene "nanog," a reference to the mythological Celtic land of Tir Nan Og, whose fairy-like residents are said to stay forever young.
( Read more... )
Scientists yesterday said they have discovered a long-sought "master gene" in embryonic stem cells that is largely responsible for giving those cells their unique regenerative and therapeutic potential.
The discovery of the gene brings scientists closer to a holy grail of biology: the ability to turn ordinary cells into those that possess all the biomedical potency of human embryonic stem cells, eliminating the need to destroy embryos to get them.
Researchers cautioned that the new work -- details of which were published in today's issue of the journal Cell -- will not bring a quick end to the political controversy over human embryo research. Some said research involving human embryos will be more important than ever for at least a while, as scientists turn their attention to the master gene and how it works in its natural, embryonic environment.
But experts said the work -- conducted mostly on mouse embryo cells but also on human equivalents -- is already revealing more about the mysterious capacity of embryonic stem cells to retain indefinitely their youthful potential to become any kind of cell the body might need. That phenomenon is known as pluripotency.
In recognition of that power, the researchers have named the gene "nanog," a reference to the mythological Celtic land of Tir Nan Og, whose fairy-like residents are said to stay forever young.
( Read more... )