U.S.A. cultivates the artificial sperm's ovum and gives birth to the child or finishes a person

U.S.A. cultivates the artificial sperm's ovum and gives birth to the child or finishes a person
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Auspicious Buddhist nun of American Stanford University Auspicious and outstanding Wear and draw the research group in 10 Of moon 29 one>Write articles on the magazine to point out, they have already found mixed plaster of protein and vitamin, make the human embryo stem cell turn into reproduction cells, thus cultivate primitive sperm and ovum in the laboratory. Scientific research personnel estimate, it will be riper to make human sperm and technology of the ovum 5 years later.
The scientist says, this can let people understand human breeding and evolution, forming reason of the hereditary disease to break through better, and found the infertile sterility of new method treatment. Have scientist say new research might let, give birth to child, become thing of one. The research has initiated a lot of morals and ethics dispute too, a lot of people are anxious may appear " L The artificial baby " .
Artificial sperm and ovum
It is to cause mankind's infertile sterile main reason to wear the quality of playing showing, there are too few reproduction cells or reproduction cell and does not pass, and all these appear in uterus, it is very much difficult for scientist not to see. So, for many years, the scientist has been studying how human reproduction cells were produced, need some genes. But human reproduction cycle can not carry on the experiment on animal, because only mankind of gene that human reproduction needs possesses.
Wearing a researcher who draws the laboratory designs a method to isolate reproduction cells from several huge embryo stem cells. Researcher add into embryo's cell give out light gene by one, gene this will make and send green fluorogenic albumen out when reproduction cells are active. Subsequently, researchers separate reproduction cells out, and control a plurality of relevant genes, find in transform the stem cell ripe the intersection of reproduction and the intersection of cell and to perform meritorious deeds never to be obliterated DAZ, DAZL, BOULE finally. Among them, DAZL gene transforms embryo's stem cell into the key of reproduction cells, DAZ and BOULE gene relates to miotic course of zoogamy.
According to Britain>Report on October 29, the sperm fostered out in laboratory has heads and short tails, it has been already ripe enough, can be fertilized; Though the ovum fostered out is not so ripe, the ovum fostered out than before is a lot riper.
Wear, draw, show, find out about behind the every about gene function, may develop genetic treatment, help the infertile sterile personage to make the sperm or ovum, make them bear naturally.
Britain bears association's secretary, Sheffield university man and bears the expert Allen The west of the handkerchief expresses : " I think that it is impossible to produce sperms in the laboratory, this research may let us find and treat man's sterile method finally, find some medicines or genes to stimulate the natural growth of the sperm. "
Are the sperm and skin of ovum made?
>Point out in the report, it is to use embryo's stem cell to foster sperm and ovum to wear and draw the group now, they hope to foster sperm and ovum with the adult's skin cell next. The scientist has already found the method, has let skin cells be turned into the omnipotent cells like stem cell, if add the technology of the cultivation reproduction cells researched and developed newly, can foster artificial sperm and ovum with skin cells. That is to say, men can produce the ovum with skin cells, women can produce sperms with skin cells.
In addition, use human one's own skin cells to mean really testing the sperm or ovum fostered in room too that will not be repelled with the human body. However, according to>Report on October 29, the sperm will pass the miotic Y chromosome, because there is male Y chromosome in women's cells, the scientist produces sperms and doubts to the skin cells that could use women.
Wear, draw, claim, bear with artificial sperm and ovum, involve much security, morals and legal issue too, it is estimated that will come true 5 years later, her research focus is to open infertile and sterile by this kind of method now.
Security and ethics cause the dispute
The births of artificial sperm and ovum, may change human bearing the appearance, also initiated the disputes of much security and ethics.
>Report point out,warn elder brother tower tile fields lying fallow in rotation, Josephine of ethics, reviewer of Britain reproduction, artificial sperm and ovum usually have defects, and will give such defective heredity to the offspring.
Britain protects Anthony not born in child's association Mick points out now : " The baby utilizing the artificial embryonated egg to foster out, may destroy even twist the human relation relation among kinsfolks. Ignore the basic ethics morals, produce the human life with medical technology, it is not the scientific and technological progress at all . "
Wear, draw, show, in future, use artificial sperm or ovum take, observe certain criterion too. The mankind who Britain will announce in 2008 breeds and forbids using artificial sperm and ovum with embryo's bill too.
In July of this year, the scientist of Britain Newcastle university declares that cultivates the ripe sperm from embryo's stem cell, but in cases that the counterpart query to it is wrong to study and have, the thesis is recalled. Group of this research has carried on the similar experiment on mouse too, the mouse has bred out the offspring too, but died soon. (Liu Xia )
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