| First
Human Embryo Cloned
in Korea or Britain ?
A South Korean medical research team said on 16 December 1998
that they had succeeded in cultivating a human embryo using human
cells, but claimed they had already been beaten by the British.
Researchers at the infertility clinic of Kyunghee University Hospital
in Seoul said they had grown a early human embryo in using an
unfertilised egg and a cell donated by a woman in her 30s.
This follows an announcement four weeks earlier that another scientist
had cloned himself using a cows egg in experiments kept secret
for three years.
Lee Bo-yon, a researcher with the hospital's infertility clinic,
told Reuters that the human embryo in the Kyunghee University
experiment divided into four cells before the operation was aborted.
"If implanted into a uterine wall of a carrier, we can assume
that a human child would be formed and that it would have the
same gene characteristics as that of the donor." Note:
There is a 1% chance that such an event could have occurred as
a result of manipulation alone - as seen very occaisionally in
IVF clinics, however the overwhelming probability is that that
a human clone was successfully created.
Lee said the research team would not take the cloning experiment
further until there was a social, legal and moral consensus to
support it. Lee said the experiment was, to his knowledge, one
of the first to use only human cells in a cloning experiment.
However others around the world such as Dr
Richard Seed are ready to so so, with financial backing
"To our knowledge the xxxxxx xxxxxxx (in Britain - name deleted
for UK libel reasons) has already succeeded in this experiment,
making us the second," Lee said, but added that he had not
been able to confirm that himself.
Lee said the experiment he conducted with Kim Sung-bo, used the
same technique as that of Teruhiko Wakayama of the University
of Hawaii with mice.
In July, Wakayama and Ryuzo Yanagimachi said they had produced
50 cloned mice from different adults. The "Honolulu Technique"
is different from technology used to create Dolly in 1996.
Dolly's makers (Roslin Institute)
used an electric current to fuse a cell from a sheep's mammary
gland with the egg from another sheep that had the nucleus removed.
The Hawaiians said they scraped the DNA material out of the
nucleus from a mouse egg and injected into it the nucleus of another
mouse. They then "chemically activated" the egg into
behaving like a newly fertilised egg and start growing.
The embryo was transferred into a surrogate mum, who gave birth
to cloned mice. They then cloned the clone, and cloned that clone,
with the result that one mouse was both grandmother and the identical
twin of the other.
South Korea, like other countries, is grappling with the issue.
The National Assembly has yet to pass legislation on human cloning,
in common with over 170 other nations. Some Korean lawmakers
have said they would support limiting the research and development
budgets of state-supported researchers if they continued cloning
experiments. Source: Reuters
Comment by Dr Patrick Dixon:
"I predicted all this in the Genetic Revolution as well as
in my latest book Futurewise.
The allegation is believable. British
cloning experts have often been very slow to announce their recent
work, and Britain is a world centre for cloning technology.
Dolly was a full grown
sheep when the press first saw her, and work began to make her
at least two years earlier. Over
ten years ago I met a leading British embryologist who was already
attempting human cloning, in defiance of public revulsion.
His work has remained secret. This pattern of secrecy was also
seen last month in the US when Jose
Cibelli announced that he head cloned nimself by combining one
of his cells with an empty cows egg - in work conducted three
years earlier, before Dolly was even born. Secrecy breeds
mistrust. British scientists may have difficulty persuading
people around the world to believe their denials. I predict
that any involved in such work will prefer to wait for official
government before making an announcement about work already done.
"Such experiments in humans, though legal in Britain, have
required a licience since 1990. However, just
last week, the official advisory bodies HFEA and HGAC recommended
a green light for making large numbers of human cloned embryos
to be used in human tissue factories with a ban on implantation
and births. Their conclusions were widely anticipated and
leaks may have given encouraged maverick cloners to press ahead,
worried about being left behind in the global human cloning race.
However, surveys show public unease, both about the implantation
of human cloned embryos to make babies and the destruction of
these early embryos to make human tissue factories."
Dr Patrick
Dixon is author of Futurewise
and is heavily involved in media
debates on genetics. Search
for more on this site with 24 million requests in year.
Should scientists be told
when to stop? Web TV.
Full
text of "The Genetic Revolution" by Dr Patrick Dixon
Loads more
articles and Web TV videos on cloning HERE
Human cloning - part one - who is doing human cloning - video
Human cloning - part two - why investors don't like cloning - video
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