Log in Advanced Search. British scientists have created early-stage, human sperm from female stem cellsaccording to a news report in New Scientist magazine.
Sperm from female stem cells, other scientists are sceptical that this procedure would ever be possible. In more recent work, he took human male stem cells from bone marrow and formed 'spermatogonia', primitive sperm cells that can form mature sperm cells by going through a process called meiosis.
Nayernia has now apparently done the same using human female stem cells, work that has yet to be published. The next stage in the process would be to make these primitive sperm cells undergo meiosiswhich Nayernia claims he has started to do.
The result could be that female eggs are fertilised by 'female' sperm, thereby eradicating the need for male gametes. He told the Telegraph newspaper that the 'presence of two X chromosome is incompatible with this.
Moreover they need genes from the Y chromosome [from the male sperm] to go through meiosis. So they are at least double damned'. Safety issues have also been raised, since the mice pups in Nayernia's initial study had health problems. A Brazilian team of scientists lead by Dr Irina Kerkis at the Butantan Institute in Sao Paolo also claim to have made sperm and eggs from male mouse ES Cells, and are currently starting to take the work into human cells.
The research brings hope to people dealing with infertility, a problem that affects one in six couples, although scientists say the process is still in its infancy and treatments are a long way off.
There is also potential to use ' induced pluripotent stem cells ', stem cells derived from human skin cells, as a starting point for the process. This could enable gay men to donate skin cells that would be used to create stem cells from which eggs could be formed. The eggs could then be fertilised using sperm from his partner, and placed in a surrogate mother. Greg Aharonian, a patent analyst Sperm from female stem cells the US, is trying to patent the technology behind 'female' sperm and 'male' eggs.
A self-proclaimed 'troublemaker', he wants to undermine the argument that marriage should remain heterosexual because its main purpose is procreation. The controversial developments have provoked mixed responses in the UK and US.
Mike Judge from the Christian Institute faith group says that 'children need male and a female role models'. Many religious groups still oppose gay marriage.
Josephine Quintavalle, from the pro-life lobby group Comment on Reproductive Ethics, says: Nobody is interested in looking at what is causing infertility - social reasons such as obesity, smoking and age'. By posting a comment you agree to abide by the BioNews terms and conditions. Syndicate this story - click here to enquire about using this story.
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Sperm from female stem cells? By Dr Charlotte Maden. Appeared in BioNews Paper announcing creation of sperm retracted for plagiarism. By posting a comment
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Advertise your products and services HERE - click for further details. Website developed and built by Ultimate Database Ltd. Subscribe to the BioNews newsletter for free. Death of the father: British scientists discover how to turn women's bone marrow into sperm. Scientists turn bone marrow into sperm. Sperm cells created from female embryo.
Mice sperm cells grown in the lab. Researchers in Japan have successfully grown sperm for the first time in a study that could eventually help preserve the fertility of cancer patients and help infertile men have children A paper published in the journal Stem Cells and Development announcing the creation of human sperm cells from embryonic stem cells has been withdrawn because it contains plagiarised material British scientists have created early-stage, human sperm from female stem cells, according to a news report in New Scientist magazine.
Alternately, they are also trying to create sperm from female eggs. Safety is a key aspect of stem cell research - this aspect is more important. A team of scientists has grown functional mouse sperm cells from cultures of embryonic stem cells.
In principle, embryonic stem cells can.