2008/02/05

♂の死=British scientist develop sperm cells from female embryo




In what seems to be achieving the impossible, British scientists have managed to reverse the laws of nature by developing sperm cells from female human embryo. Prof Karim Nayernia, Professor of Stem Cell Biology at Newcastle University has achieved this feat. The primary difference between the sperm cell and the female embryonic cells is that the former contains the Y-chromosomes along with the X chromosomes while the latter contains only the X chromosomes. To make the primitive sperm cells developed from female embryo functional the challenge that lies ahead of the scientists is to make the primitive sperm cells undergo meiosis so that they contain the correct genetic materials capable of fertilization.
This new development has raised hope among lesbian couples desiring to have their own biological children. However, to develop babies from the method would take years. There will be a number of biological as well as ethical issues in developing babies through unnatural ways. The biological impediment would involve developing healthy humans from this method without any genetic defect. In an earlier experiment, Prof Nayernia had developed sperms from male embryonic stem cells, used them to fertilize egg cells, and developed seven mice pups. Six of these mice survived adulthood but had severe defects.According to Dr. Robin Lovell-Badge of National Institute of Medical Research, Mill Hill, London this method of developing human embryo is ‘doubly-damned’. Firstly, presence of both X and Y-chromosomes is not possible from this method and secondly, you need Y chromosome genes to undergo meiosis.

達成するためには不可能だと思われるものは、英国の科学者が管理する自然の法則を逆に精子細胞を開発することにより女性のヒト胚からです。 Prof Karim Nayernia, Professor of Stem Cell Biology at Newcastle University has achieved this feat.カリムnayernia教授は、幹細胞生物学の教授ニューカッスル大学ではこの偉業を達成した。 The primary difference between the sperm cell and the female embryonic cells is that the former contains the Y-chromosomes along with the X chromosomes while the latter contains only the X chromosomes.主な違いは、女性の胚細胞精子細胞とは、前者には、 Y字型の染色体に沿っていますが、後者のX染色体のX染色体のみが含まれています。 To make the primitive sperm cells developed from female embryo functional the challenge that lies ahead of the scientists is to make the primitive sperm cells undergo meiosis so that they contain the correct genetic materials capable of fertilization.精子を作る原始胚細胞の機能の開発に挑戦してから女性待ち受けていることだが、科学者たちは、原始精子細胞を作る減数分裂を受けるように、正しい遺伝物質が含まれ受精能力がある。

This new development has raised hope among lesbian couples desiring to have their own biological children.この新たな発展が期待引き上げたレズビアンのカップルの間では、独自の生物学的欲求を連れています。 However, to develop babies from the method would take years.しかし、赤ちゃんを開発する方法をとる年からです。 There will be a number of biological as well as ethical issues in developing babies through unnatural ways.生物学的には、いくつかの倫理的な問題だけでなく、発展途上の赤ちゃんを通して不自然な方法があります。 The biological impediment would involve developing healthy humans from this method without any genetic defect.発展途上の生物学的障害を伴う健全な人間には、この方法よりもなく遺伝的欠陥です。 In an earlier experiment, Prof Nayernia had developed sperms from male embryonic stem cells, used them to fertilize egg cells, and developed seven mice pups.以前の実験では、教授が開発したnayernia男性の胚性幹細胞から精子は、卵子を受精させるように使われて、マウスや先進7パップス。 Six of these mice survived adulthood but had severe defects.しかし、これらのマウスを乗り越えた6人が重度の欠陥を大人になっている。

According to Dr. Robin Lovell-Badge of National Institute of Medical Research, Mill Hill, London this method of developing human embryo is ‘doubly-damned’.博士によると、ロビンラベル-バッジの国立医学研究は、ミルヒルは、ロンドンでは、このメソッドは、開発途上ヒト胚'二重にのろわれた' 。 Firstly, presence of both X and Y-chromosomes is not possible from this method and secondly, you need Y chromosome genes to undergo meiosis.まず第一に、 x 、 yの両方に存在する染色体ではないから、この方法の可能性や第二に、 Y染色体の遺伝子を受ける必要があります減数分裂。

Source: Telegraphソース: テレグラフ


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