It produced the world's first human ES cells the (embryonic stem cells).

That it has produced for the first time in the world with the ability to use make the cells with the same genetic information "cloning technology", change to a variety of cells, ES cells of human (embryonic stem cells), Tachibana of rice Oregon Health and Science large the 15th, and colleagues was published in the U.S. scientific journal cell.
If Tsukuridasere and nerve cells or myocardial having the genetic information same patient as in (induced pluripotent stem cells) iPS cells Yamanaka, Kyoto University professor was produced, it is possible to applications in regenerative medicine.
Eggs from healthy women have provided, remove containing the genetic information "nuclear", the research team transplanted nucleus of skin cells of another person. It brought up to state that "(boric Ban yes) blastocyst," which was cell division until about 150, to prepare ES cells. It was successful in the monkey and mouse, but you grow to blastocyst eggs you have nuclear transfer it was difficult in humans. Was overcome to improve the existing methods.
There is a possibility that if transplanted into the uterus blastocysts were prepared this time, human clone is born. However, in the case of animal testing, abortion rate is high even grow to blastocyst, can be found in high frequency and fetal malformation. Not only not allowed to. Ethical and thus not only the fetus, pregnant women at risk, Akutsu chief of the National Center for Child Health and Development stem cells, reproductive science laboratory clone in terms of safety technology and "human cloning I point out to the man, "not realistic. I feel the greatness of God from the situation is that the human race was able only this, but still can not reach the stage that produce life.


同じ遺伝情報を持つ細胞を作る「クローン技術」を使って、様々な細胞に変化する能力を持つ、人のＥＳ細胞（胚性幹細胞）を世界で初めて作製したと、米オレゴン健康科学大の立花研究員らが１５日、米科学誌セルに発表した。
　患者と同じ遺伝情報を持つ心筋や神経細胞などを作り出せれば、山中・京都大教授が作製したｉＰＳ細胞（人工多能性幹細胞）と同様に、再生医療に応用することが可能になる。
　研究チームは、健康な女性が提供した卵子から、遺伝情報の入った「核」を取り除き、別人の皮膚細胞の核を移植。１５０個ほどまで細胞分裂させた「胚盤胞(はいばんほう)」という状態に育て、ＥＳ細胞を作製した。マウスやサルでは成功していたが、人では核移植した卵子を胚盤胞まで育てるのは難しかった。既存の手法を改良し克服した。
　今回作製した胚盤胞を子宮に移植すれば、クローン人間が生まれる可能性がある。しかし動物実験の場合、胚盤胞まで育てても流産率は高く、胎児の奇形も高頻度で見られる。国立成育医療研究センター幹細胞・生殖学研究室の阿久津室長は「クローン人間作りは胎児だけでなく、妊婦も危険にさらすことになる。倫理的に許されないだけでなく、技術や安全の面でもクローン人間は現実的ではない」と指摘する。これだけのことが出来るようになった人類ですが生命を生み出す段階まで到達できない状況からも神の偉大さを感じますね。