[Science] Men No Longer Needed to Create Sperm

A healthy body is most important for any child or adult. Discuss all issues related to health in this forum.

[Science] Men No Longer Needed to Create Sperm

Postby sashimi » Fri Mar 13, 2009 9:32 am

http://www.environmentalgraffiti.com/sc ... uction/750

Men No Longer Needed to Create Sperm

Thu, Jan 31, 2008


It looks like males will soon be irrelevant to the survival of the human race.

Scientists at the University of Newcastle have managed to create human sperm cells using a female embryonic stem cell.

The researchers, led by Prof Karim Nayernia, had previously created primitive sperm cells from male bone marrow. They’re currently working on making the cells from female bone marrow, which would be much easier and more practical than creating them from embryos.

The creation means that lesbian couples could soon have children that shared the DNA of both women, rather than having one male biological father. A sperm cell created from one partner could fertilize her partner’s egg.

There is some question about whether a sperm cell created from a female could produce viable, healthy offspring. The human female sperm cells could not in their current state produce offspring as they do not have the correct amount of genetic material. The team must next have the cells undergo meiosis to make sure the cells have the correct amount of genetic material.

That will likely only be a minor roadblock. Prof Nayernia has already overcome this problem with sperm cells created from male cells. In 2006, he used sperm created from embryonic stem cells to impregnate mice. The mice produced 7 pups, although one died and the other six had health problems.

Ok, so it may be overstating it a bit to say that males will be irrelevant. Just because we’re not technically needed to breed doesn’t mean women will no longer find men attractive, right? After all, we’re good for a lot more than just baby making. We’ve got tons to offer! For instance, just the other day I assembled a chair from Ikea, and it only wobbles a tiny bit when you sit on it. Also, I’m frequently asked to kill insects. I think we men have a bright future. :)

Info from Telegraph. Original article: http://www.telegraph.co.uk/scienceandte ... mbryo.html

Sperm cells created from female embryo


By Roger Highfield, Science Editor
Last Updated: 12:17AM GMT 01 Feb 2008

Lesbian couples could one day have children who share both their genes

Sperm cells have been created from a female human embryo in a remarkable breakthrough that suggests it may be possible for lesbian couples to have their own biological children.

British scientists who had already coaxed male bone marrow cells to develop into primitive sperm cells have now repeated the feat with female embryonic stem cells.

The University of Newcastle team that has achieved the feat is now applying for permission to turn the bone marrow of a woman into sperm which, if successful, would make the method more practical than with embryonic cells.

It raises the possibility of lesbian couples one day having children who share both their genes as sperm created from the bone marrow of one woman could be used to fertilise an egg from her partner.

Men and women differ because of what are called sex chromosomes. Both have an X chromosome. But only men possess a Y chromosome that carries several genes thought to be essential to make sperm, so there has been scepticism that female stem cells could ever be used to make sperm.

In April last year, Prof Karim Nayernia, Professor of Stem Cell Biology at Newcastle University, made headlines by taking stem cells from adult men and making them develop into primitive sperm.

He has now managed to repeat the feat of creating the primitive sperm cells with female embryonic stem cells in unpublished work.

The next step is to make these primitive sperm undergo meiosis, so they have the right amount of genetic material for fertilisation.

Prof Nayernia showed the potential of the method in 2006, when he used sperm derived from male embryonic stem cells to fertilise mice to produce seven pups, six of which lived to adulthood, though the survivors did suffer problems.

He is now optimistic about the prospect of lab-grown sperm from women.

“I think, in principle, it will be scientifically possible,” Prof Nayernia told New Scientist.

He said that he has applied for ethical approval from the university to use bone marrow stem cells from women to start experiments to derive female sperm.

“We are now writing the application form,” he said, adding that experiments will begin in Newcastle if and when they get approval.

However, Dr Robin Lovell-Badge, a stem cell and sex determination expert at the National Institute for Medical Research, Mill Hill, London, doubts it will work: “The presence of two X chromosomes is incompatible with this. Moreover they need genes from the Y chromosome to go through meiosis. So they are at least double-damned.”

In Brazil, a team led by Dr Irina Kerkis of the Butantan Institute in Saõ Paulo claims to have made both sperm and eggs from cultures of male mouse embryonic stem cells in the journal Cloning and Stem Cells.

The researchers have not yet shown that their male eggs can be fertilised to produce viable offspring, but they are thinking about possibilities for same-sex human reproduction.

If all these experiments pan out, then the stage would also be set for a gay man to donate skin cells that could be used to make eggs, which could then be fertilised by his partner’s sperm and placed into the uterus of a surrogate mother.

“I think it is possible,” says Kerkis, “but I don’t know how people will look at this ethically.”

The UK parliament is now debating changes to the 1990 Human Fertilisation and Embryology Act, and the government is under pressure to include an amendment that would allow the future use of eggs and sperm grown in the lab from stem cells.

However, a clause added to this amendment would restrict this to sperm from genetic males and eggs from genetic females.

sashimi
BlueBelt
BlueBelt
 
Posts: 499
Joined: Thu Nov 13, 2008 11:21 am
Total Likes: 1


Re: [Science] Men No Longer Needed to Create Sperm

Postby ChiefKiasu » Fri Mar 13, 2009 8:37 pm

sashimi wrote:http://www.environmentalgraffiti.com/sciencetech/men-no-longer-necessary-for-sperm-production/750 ...


This wins the prize for our scariest Friday the 13th post. We males better go clone ourselves quickly. We are getting extinct soon.

ChiefKiasu
Site Admin
 
Posts: 15221
Joined: Mon Sep 03, 2007 9:16 am
Location: Singapore
Total Likes: 319


Re: [Science] Men No Longer Needed to Create Sperm

Postby Guest » Fri Mar 13, 2009 8:58 pm

ChiefKiasu wrote:This wins the prize for our scariest Friday the 13th post. We males better go clone ourselves quickly. We are getting extinct soon.


I think it is faster to eliminate the inventor. :lol:

This is one of the most "bo liao" invention of its kind! :roll:

ok granted, I can only think of one scenario it will be useful....when the whole world has been destroyed and there are only 2 women standing on the surface of the earth. :wink:
Guest
 

Postby ZacK » Fri Mar 13, 2009 11:16 pm

I always wonder when men keep wanting to play God... I'm not against medical sciences where research goes towards improving the lives of mankind in general... But what benefits will come out of such a research?

Will they start producing "male" babies that lack testosterone and then start developing breast and underdeveloped male organs since they get double the shots of estrogen :stupid:

ZacK
KiasuGrandMaster
KiasuGrandMaster
 
Posts: 2396
Joined: Sun Jul 13, 2008 9:19 pm
Total Likes: 0


Postby phantom » Sat Mar 14, 2009 9:18 am

There was this old article that indicate men is on the path to extinction due to degrading Y chromosome.

http://www.theage.com.au/articles/2003/ ... 71984.html
http://www.abc.net.au/science/news/stories/s884493.htm

Maybe that research is preparing for that :!:

But the world would be so dull with just a single sex :pray:

phantom
Site Admin
 
Posts: 369
Joined: Wed Sep 12, 2007 4:48 pm
Total Likes: 1



Re: [Science] Men No Longer Needed to Create Sperm

Postby flyfree » Thu Jul 21, 2011 9:43 pm

God creates Man & Woman, if one of them is not around, life will be "less adventurous, challenging" .

flyfree
GreenBelt
GreenBelt
 
Posts: 100
Joined: Wed Oct 07, 2009 11:24 pm
Total Likes: 0


Re: [Science] Men No Longer Needed to Create Sperm

Postby matrix0405 » Fri Jul 22, 2011 12:48 pm

From 2021 onward, sex will only be for fun. Pro-creation all done in labs and babies.

matrix0405
BlueBelt
BlueBelt
 
Posts: 329
Joined: Wed Jul 30, 2008 10:56 pm
Total Likes: 0


Re: [Science] Men No Longer Needed to Create Sperm

Postby flyfree » Fri Jul 22, 2011 9:54 pm

matrix0405 wrote:From 2021 onward, sex will only be for fun. Pro-creation all done in labs and babies.


Sex can only be satisfying & fulfilling if only with a 'suitable' partner. or else it might be a chore. :love:

flyfree
GreenBelt
GreenBelt
 
Posts: 100
Joined: Wed Oct 07, 2009 11:24 pm
Total Likes: 0


Re: [Science] Men No Longer Needed to Create Sperm

Postby ayaka » Thu Aug 18, 2011 11:27 am

Haha.....
Men will still be needed for creation and survival of species. Imagine every sperm taken from same woman's eggs, then the off spring would inherit the genetic defects of the parent. As smart as the scientists are, they still can't defeat the natural order of things.

Besides, what would women do without us :)

ayaka
KiasuNewbie
KiasuNewbie
 
Posts: 6
Joined: Mon Aug 08, 2011 4:20 pm
Total Likes: 0


Re: [Science] Men No Longer Needed to Create Sperm

Postby Sun_2010 » Thu Aug 18, 2011 12:31 pm

ayaka wrote:Haha.....
Men will still be needed for creation and survival of species. Imagine every sperm taken from same woman's eggs, then the off spring would inherit the genetic defects of the parent. As smart as the scientists are, they still can't defeat the natural order of things.

Besides, what would women do without us :)


Yeah right.
No men?
Life is boring when things are neat, colour coordinated , efficient, ...
No chaos,
No soccer,
What can I rant about if there were no men?
I need my daily dose of ranting :shrug: of course!

So yeah men pls don't go extinct :please:

Sun_2010
KiasuGrandMaster
KiasuGrandMaster
 
Posts: 4613
Joined: Mon Feb 22, 2010 2:13 pm
Total Likes: 145


Next

Return to Health