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Archive for December 27th, 2017

Chinese scientists clone dogs with heart disease — and call it an achievement

longlong

China says it has managed to join South Korea as a world leader in canine cloning — by managing to create a clone of a sick dog.

Longlong, a beagle, was born with a blood-clotting disorder, and that was just what the scientists were hoping for.

The pup is a clone of Apple, a different dog whose genome was edited to develop the disease atherosclerosis, CNN reported.

longlong1By cloning the bioengineered dog, the scientists ensured they will have a good supply of diseased dogs for experiments they say could lead to cures for the condition that causes strokes and heart disease in humans.

Longlong was created by the Beijing-based biotech company Sinogene, which is boasting about having created the world’s first dog cloned from a gene-edited donor.

With Longlong’s birth, and two more clones of the bio-engineered dog being born since then, the scientists claimed that China had matched South Korea as a leader in canine cloning technology. South Korean scientists cloned the first dog, an Afghan hound named Snuppy, in 2005.

“Dogs share the most inheritable diseases with human beings, which makes them the best disease models to study,” says Feng Chong, technical director at Sinogene.

While the pups haven’t shown any signs of cardiovascular disease yet, their cloning ensures they will get it. Experimental drugs to treat cardiovascular diseases are already being tested on them.

Longlong’s birth combined two technologies: A gene-editing tool called CRISPR with somatic cell cloning technology, the method used to clone Dolly the sheep and later, Snuppy.

Zhao Jianping, vice manager of Sinogene, says the company’s success in dog cloning is about 50%. Two surrogate dogs out of four gave birth to three cloned puppies. The other two did not get pregnant.

Scientists at Sinogene believe their work aids the future of pharmaceutical development and biomedical research and it plans to produce more cloned dogs like Longlong.

“Gene-edited dogs are very useful for pharmaceutical companies,” said Feng. “The supply falls short of the demand every year.”

(Poor little pharmaceutical companies.)

The scientists also say cloning bio-engineered dogs to create puppy clones that will be born with the disease is kinder than the previous method of creating atherosclerosis in lab dogs — namely, force feeding with meals high in sugar.

Scientists, in case you haven’t noticed, have also invented a way to justify just about anything they want to do.

So if you want to hail this as a great achievement in technology, go ahead. I prefer to see it as scientists taking another giant stride toward playing God — giveth-ing life to dogs, only to taketh it away. Mankind may benefit (or at least live a longlong time), but rest assured the biggest gains will go to pharmaceutical companies.

(Photos: CNN)