Technology channels () message: "the stem cell research to achieve breakthrough development" of news becomes United States media darling of the front page. On this day, the Middle East conflict, the Iran nuclear issue, or United States parliamentary elections, the real estate market downturn that Government, the largest hotspot are giving this relationship with human health and the ethics of science and technology event. United States advanced cell technology Inc (Advanced Cell Technology) researchers announced that they have not destroy embryos of-in successfully obtained the stem cells. This is the cauldron, the United States of conservatives are lost on stem cell research to attack.
"No reasonable reason to oppose stem cell research," the United States advanced cell technology company President Robert · Branca (Robert Lanza) doctor claims. However, things are no Branca claimed that simple. Always on stem cell research turns up in the White House on this "breakthrough" do not buy it, but Branca's colleagues also questioned: such a study would not be a "clone" of the beginning?
Breakthrough the bottleneck of ethics, sad political gateway
In Branca's technological breakthrough exposure before human embryonic stem cell research is limited to when the embryos into 150 cells, extract some cells to experiment. But this approach is likely to harm the development of the embryo itself, triggering a United States society of considerable moral controversy, and as the Bush Administration refuses to provide federal funding.
Recently, Branca, led by scientists at the authority of the nature (Nature) magazine published a set of new stem cell extraction method, this study can walk out before facing ethical dilemmas. New test object is just a 2-day developing embryos fertilized eggs already at this time--split into eight cells, also called "blastomere" (blastomeres). Scientists will remove the embryo into the environment from the mother, similar to the uterus of cell growth environment (fertility clinics), and then from 8 blastomere extracted one for the future of stem cell research, and after only 7 cell embryo transplantation of mother-to-back again. Since the early stages of embryonic development, which is still extracted across the cells of the embryo can continue to develop into healthy growth, a new life of larvae.
Simply speaking, this means extracting occurred in embryo into the uterus wall in front of the stage, test object of acquire and not to stifle the embryo. This brilliant experiment method seems to have succeeded in bypassing the ethics of stem cell research, so that those who oppose the trap for stem cell research "shut up".
However, this technique cannot answer people all fear of ethics. Some scientists doubt removed from embryonic cells will reduce the embryos in the uterus health development opportunities, or affect its growth, leading to some of the children's health after forming.
"It is not clear that this new approach is consistent with the United States Congress on stem cell research restrictions, because the cells of the ball from embryos removed still makes embryonic development risk facing some, but for this gene test performance from the development of the embryo may seem and IVF (in vitro fertilization) baby are the same," United States national institutes of health (National Institutes of Health), stem cell research · Baie-James (James Battey) evaluation of the Dr said.
Branca in this response to the road, this set of test methods will be used for human beings who already variation, it is not possible to develop into a child's embryonic cells, and the entire risk of the extraction step has been reduced to a minimum, and will not harm healthy embryonic cells.
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