| 14th November 2007 12:03 PM |
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| steel driving hammer |
2 hours, 1 minute ago
PARIS, Nov 14, 2007 (AFP) - Scientists said Wednesday they had created the world's first cloned embryo from a monkey, in work that could spur cloning of human cells for use in medical research.
In a paper published online by the British journal Nature, a team in the US said they had created cloned embryos of rhesus macaques, using the same method that famously led to Dolly the Sheep and other genetically duplicated animals.
It is the first time that this technique has been successfully used to create cloned primate embryos.
The group generated two lines of embryonic stemcells from the embryos, according to the research headed by Shoukhrat Mitalipov of the Oregon Health and Science University in Beaverton, Oregon.
Dolly, the world's first cloned animal, was created in 1996, by using so-called somatic cell nuclear transfer (SCNT) in which the genetic core of an egg is removed and replaced with the nucleus of an adult cell.
The egg is then stimulated with chemicals or a jolt of electricity to prompt its division.
The list of other cloned creatures using SCNT includes mice, pigs, cats, cows and dogs.
Until now, though, there has been no cloned primate, for researchers encountered obstacles that caused cell development to be catastrophically flawed.
Work on primate cloning has also stirred controversy among ethicists, who say it could open the door to cloning human beings, not just cells. In an exceptional move, Nature said it moved forward the release of the paper because of "continuing speculation" about the research.
Researchers distinguish between "reproductive cloning" of humans, in which a cloned baby would be born and "therapeutic cloning" in which only cloned cells would be used for medical reasons and no baby would result.
Helen Wallace of Genewatch UK, a British group that monitors cloning and other activities in biotechnology, said the breakthrough announced on Wednesday would cause "a real worry" in some quarters that it would tempt a renegade scientist to create a cloned baby.
"The clear risk of an experiment [in human reproductive cloning] is of a deformed baby and maternal suffering," she told AFP in a phone interview.
"In Britain, we don't think that the technology is going to go that far because there are laws against reproductive cloning," she said. "However, in most countries around the world, there are no legal safeguards."
Stemcells are immature cells that develop into the specific tissues of the body.
Embryonic stemcells have the highest capability of all, because they can differentiate into any tissue. Scientists hope to be able to coax these cells into one day becoming replacement tissue for organs that are damaged or diseased.
Transplanted cells from a donor, however, run the risk of being attacked as intruders by the patient's immune system. By creating stemcells that are programmed with the patient's own DNA the risk of rejection would be skirted.
Mitalipov's team said they collected 304 eggs, also known as oocytes, from 14 female rhesus macaques.
The donor nucleus came from skin cells taken from an adult male monkey housed at the Oregon National Primate Research Center.
Thirty-five blastocysts, or early-stage embryos, resulted from the SCNT operation. They in turn led to two lines of self-dividing embryonic stemcells -- a success rate of 0.7 percent when compared to the number of eggs used.
"Our results represent successful nuclear reprogramming of adult somatic cells into pluripotent ES (embryonic stem) cells and demonstrate proof-of-concept for therapeutic cloning in primates," the paper said.
Wallace criticised what she said was the "very high failure rate" of SCNT.
The technique has always needed large numbers of eggs to be harvested in order to result in just a small number of cloned embryos. In addition, many cloned animals are born with genetic defects and die prematurely.
"We have concerns about the implications of using this technology because the failure rate raises questions as to whether the suffering in animals is justified," said Wallace.
The claim that the stemcells were an exact DNA copy of the donor monkey's genetic code was validated independently by a team led by David Cram of Monash University in Melbourne, Australia.
That confirmation comes on the heels of a scandal surrounding earlier claims on cloning.
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| 14th November 2007 12:08 PM |
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| Blowey |
I'm totally against cloning...
(Wait for it)
Because life is nothing without loads and loads of SPLOOGE!!!! I LOVE the stuff!!!
YES!!!!
H.R. Blowin'Stuff. (He loves the SPLOOGE!)
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| 14th November 2007 12:10 PM |
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| Fiji Joe |
Cloned monkey?...I bet that petri dish sumbitch grows up to post here |
| 14th November 2007 12:12 PM |
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| Joey |
" Cloned monkey?...I bet that petri dish sumbitch grows up to post here "
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| 14th November 2007 12:15 PM |
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| Fiji Joe |
quote:
Joey wrote:
" Cloned monkey?...I bet that petri dish sumbitch grows up to post here "
Sup fake Blowey?
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| 14th November 2007 12:21 PM |
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| LadyJane |
quote:
Fiji Joe wrote:
Cloned monkey?...I bet that petri dish sumbitch grows up to post here
Wonder if it pouts??
LJ. |
| 14th November 2007 04:39 PM |
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| Joey |
quote:
Fiji Joe wrote:
the joey is a phenomenal writer
Lil' Fiji ........ Oh , OH !!! ... Little , Oh , .. Lil' Fiji ..........
Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh , .. Oh !!! Oh ....
...Lil' .. little Fiji |
| 16th November 2007 04:45 AM |
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| JohnLeeHacker |
I'm a fleabit peanut monkey
All my friends are junkies
That's not really true
I'm a cold Italian pizza
I could use a lemon squeezer
Would you do?
But I've been bit and I've been tossed around
By every she-rat in this town
Have you, babe?
Well, I am just a monkey man
I'm glad you are a monkey woman too
I was bitten by a boar
I was gouged and I was gored
But I pulled it on through
Yes, I'm a sack of broken eggs
I always have an unmade bed
Don't you?
Well, I hope we're not too messianic
Or a trifle too satanic
We love to play the blues
Well I am just a monkey man
I'm glad you are a monkey, monkey woman too, babe
I'm a monkey
I'm a monkey
I'm a monkey man
I'm a monkey man
I'm a monkey...
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| 16th November 2007 07:09 AM |
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| Ten Thousand Motels |
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