Stella Dimoko Korkus.com: World’s Frst Baby Born With New “3 Parent” Technique

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Wednesday, 28 September 2016

World’s Frst Baby Born With New “3 Parent” Technique

A five-month-old boy is the first baby to be born using a new technique that incorporates DNA from three people, New Scientist can reveal. 




“This is great news and a huge deal,” says Dusko Ilic at King’s College London, who wasn’t involved in the work. “It’s revolutionary.”
The controversial technique, which allows parents with rare genetic mutations to have healthy babies, has only been legally approved in the UK. But the birth of the child, whose Jordanian parents were treated by a US-based team in Mexico, should fast-forward progress around the world, say embryologists.

The boy’s mother carries genes for Leigh syndrome, a fatal disorder that affects the developing nervous system. Genes for the disease reside in DNA in the mitochondria, which provide energy for our cells and carry just 37 genes that are passed down to us from our mothers. This is separate from the majority of our DNA, which is housed in each cell’s nucleus.



Around a quarter of her mitochondria have the disease-causing mutation. While she is healthy, Leigh syndrome was responsible for the deaths of her first two children. The couple sought out the help of John Zhang and his team at the New Hope Fertility Center in New York City.


John Zhang holds the baby
Zhang has been working on a way to avoid mitochondrial disease using a so-called “three-parent” technique. In theory, there are a few ways of doing this. The method approved in the UK is called pronuclear transfer and involves fertilising both the mother’s egg and a donor egg with the father’s sperm. Before the fertilised eggs start dividing into early-stage embryos, each nucleus is removed. The nucleus from the donor’s fertilised egg is discarded and replaced by that from the mother’s fertilised egg.

But this technique wasn’t appropriate for the couple – as Muslims, they were opposed to the destruction of two embryos. So Zhang took a different approach, called spindle nuclear transfer. He removed the nucleus from one of the mother’s eggs and inserted it into a donor egg that had had its own nucleus removed. The resulting egg – with nuclear DNA from the mother and mitochondrial DNA from a donor – was then fertilised with the father’s sperm.
Zhang’s team used this approach to create five embryos, only one of which developed normally. This embryo was implanted in the mother and the child was born nine months later. “It’s exciting news,” says Bert Smeets at Maastricht University in the Netherlands. 


The team will describe the findings at the American Society for Reproductive Medicine’s Scientific Congress in Salt Lake City in October.
Neither method has been approved in the US, so Zhang went to Mexico instead, where he says “there are no rules”. He is adamant that he made the right choice. “To save lives is the ethical thing to do,” he says.


The team seems to have taken an ethical approach with their technique, says Sian Harding, who reviewed the ethics of the UK procedure. The team avoided destroying embryos, and used a male embryo, so that the resulting child wouldn’t pass on any inherited mitochondrial DNA. “It’s as good as or better than what we’ll do in the UK,” says Harding.

A remaining concern is safety. Last time embryologists tried to create a baby using DNA from three people was in the 1990s, when they injected mitochondrial DNA from a donor into another woman’s egg, along with sperm from her partner. Some of the babies went on to develop genetic disorders, and the technique was banned. The problem may have arisen from the babies having mitochondria from two sources.

When Zhang and his colleagues tested the boy’s mitochondria, they found that less than 1 per cent carry the mutation. Hopefully, this is too low to cause any problems; generally it is thought to take around 18 per cent of mitochondria to be affected before problems start. “It’s very good,” says Ilic.

Smeets agrees, but cautions that the team should monitor the child to make sure the levels stay low. There’s a chance that faulty mitochondria could be better at replicating, and gradually increase in number, he says. “We need to wait for more births, and to carefully judge them,” says Smeets.


Two women, one man and a baby
A Jordanian couple has been trying to start a family for almost 20 years. Ten years after they married, she became pregnant, but it ended in the first of four miscarriages.

In 2005, the couple gave birth to a baby girl. It was then that they discovered the probable cause of their fertility problems: a genetic mutation in the mother’s mitochondria. Their daughter was born with Leigh syndrome, which affects the brain, muscles and nerves of developing infants. Sadly, she died aged six.


 The couple’s second child had the same disorder, and lived for 8 months.

Using a controversial “three-parent baby” technique (see main story), the boy was born on 6 April 2016. He is showing no signs of disease.

culled -New Scientist.com


20 comments:

Monkey Face said...

😕😕 so who will the baby look like?
Having iru fanta, okpa coke

redbotafly said...

God is great.

ZIONA said...

im happy for the couple they have gone thru a lot emotionally.

Wizkid said...

i seeeee

Ella Izulu said...

They should stop already with this their weird discoveries dat are unnecessary.....wat happen to finding solution to why a 10yr old baby is masturbating...... or solution to the killing of young women and girls if they are raped.. in India....... or atleast BOKOHARAM ETC...

Port Harcourt's Finest said...

Revolutionary science for the greater good.

BluntChic said...

Two woman One man and a baby! Wow! This is lovely. what else?

Nemerem said...

Na so e dey start, valid reason from there they will start creating something else. I hope the child has/lives a normal life.
God bless every TTC parents, and help our medical/scientists to know their limits in their pursuit for superior knowledge.

Cynthia said...

Chaiii scientist will not kill us kpatakpata with researches BT it all good

becky lawei said...

Wow i love science

Taye said...

They have started again oh....trying to prove *what not*. God is still God....no matter what!

Hair Wonder Whatsapp 07038005613 said...

Okay oooh,
Science project pikin.

PORTABLE VIV the beautiful n sexy queen of sdk blog said...

OK.. He should enjoy

PL THE GREAT said...

I'm literally clapping for Dr zhang here. It's revolutionary indeed!

The best amongst the cuties said...

Una well-done oh. Playing God.

Anonymous said...

Why can't you find the solution.idiot

LINDY NARDS said...

Wait till judgement day..........

LUCILE COCONUT OIL ABUJA 07059605320 Pin- 2BC6235E said...

Abi

Jasmine said...

Ok. So I can decide to av a baby with my husband and ex? Na question o

Anonymous said...

So finding solution to y a child would be born only to suffer for d rest of its life ain't good? U better find solution to ur utter stupidity n idiotic state of mibd

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