backtop


Print 101 comment(s) - last by FaceMaster.. on Feb 9 at 3:41 PM


Scientists have cloned a Pyrenean ibex, an extinct genetically distinct subspecies of the Spanish ibex, shown here. The ibex, known for its curved horns went extinct in 2000. Scientists resurrected it with a skin sample, though it was born with a lung defect and soon died.  (Source: Jose Luis GOMEZ de FRANCISCO/naturepl.com)
New cloning work could clear the way for resurrection of many recently extinct beasts

In the realm of commercial cloning, trickled-down technology from this cutting edge field of research has allowed firms to offer pet cloning services.  And in the realm of research, tremendous advances continue as scientists are hatching plans to resurrect extinct beasts.  Scientists have almost finished mapping the Woolly Mammoth genome, and have already injected DNA from an extinct species into a mouse.

Now arguably the greatest landmark event for the field of cloning has occurred.  Scientists have for the first time cloned an extinct animal, the Pyrenean ibex, a form of wild mountain goat.  The really spectacular thing about this cloning effort is that it was done using only DNA from skin samples. 

Technically classed as a genetically distinct subspecies of the Spanish ibex, the Pyrenean ibex, or bucardo as it is called by the locals, used to roam the mountainous hillside of northern Spain.  Known for its distinct horns, the animal was a popular target for hunters, and by the 19th century only 100 were left.  The species was not declared protected until 1973, at which time there were around 30 animals.  In 2000, the last known member of this critically endangered species was found dead on a hillside.  Researchers at the time decided to wisely preserve skin samples in liquid nitrogen.

The well-preserved skin samples proved a fruitful source for DNA.  Replicating this DNA using common genomic techniques, the researchers injected it into goat eggs, replacing the goat DNA.

While a great success, the effort also showcased the difficult road ahead for producing viable clones.  While born alive, the newborn ibex kid had defects in its lungs, similar to those found in many cloned sheep, and they proved fatal.  However, as some sheep clones have lived relatively normal lifespans, the success raises the hope of a more permanent resurrection.

Dr Jose Folch, from the Centre of Food Technology and Research of Aragon helped lead the research.  He states, "The delivered kid was genetically identical to the bucardo. In species such as bucardo, cloning is the only possibility to avoid its complete disappearance."

Professor Robert Miller, director the Medical Research Council's Reproductive Sciences Unit at Edinburgh University who heads a northern white rhino cloning effort funded by the Royal Zoological Society of Scotland cheered the news.  He states, "I think this is an exciting advance as it does show the potential of being able to regenerate extinct species. Clearly there is some way to go before it can be used effectively, but the advances in this field are such that we will see more and more solutions to the problems faced."

The race is now on to make sure that critically endangered species' tissues are preserved for future cloning efforts.  Britain's Zoological Society of London and America's Natural History Museum have teamed up in a project called Frozen Ark.  They are in the process of storing samples from thousands of species.

While cloning a dinosaur is highly improbable due to DNA's chemical tendency to rapidly break apart to the point where it cannot be sequenced, this new breakthrough paves the way for cloning of both endangered species, and extinct species with fully sequenced genomes, such as Neanderthals or, likely soon, the Woolly Mammoth.  However, this new work also highlights the extreme challenge ahead in trying to establish a sustainable population of a cloned animal, or even clones that live to reach adulthood.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: Why lungs defective?
By phazers on 2/2/2009 10:25:42 AM , Rating: 5
In mammals, I would think the brain would be the most advanced organ...


RE: Why lungs defective?
By jRaskell on 2/2/2009 11:07:17 AM , Rating: 5
It's likely the fetus would never reach birth with a truly defective brain, where-as organs such as the lungs don't really have an affect on viability until birth, at which point they have to be used.

It's also possible a number of other organs were defective as well, but those organs won't have as immediate an affect on the life of the clone as the lungs do. If you can't breath, you're going to die rather quickly. If your kidneys or liver don't work, you'll live much longer before they start becoming a problem.


RE: Why lungs defective?
By masher2 (blog) on 2/2/2009 11:10:58 AM , Rating: 3
While your other points are valid, a fetus can be viable with a heavily damaged (or even nonexistent) forebrain. The relatively small brain stem is the part required for basic life functions.


RE: Why lungs defective?
By teldar on 2/2/2009 2:45:19 PM , Rating: 2
This would allow them to possibly live to reproductive maturity so they could be inseminated and produce viable offspring.


RE: Why lungs defective?
By Suntan on 2/2/09, Rating: -1
RE: Why lungs defective?
By afkrotch on 2/2/2009 12:23:49 PM , Rating: 5
Ya, like the ppl that have a signature of just their name, when it's already show.

- afkrotch (hizzahahahaha!!!!)


RE: Why lungs defective?
By Suntan on 2/2/09, Rating: -1
RE: Why lungs defective?
By justinmcg67 on 2/2/09, Rating: 0
RE: Why lungs defective?
By GodisanAtheist on 2/2/2009 6:37:21 PM , Rating: 4
He missed one letter in one of his posts while you intentionally type 6 at the end of each of yours.

Its OK not to have a witty comeback each and every time.


RE: Why lungs defective?
By nugundam93 on 2/4/2009 7:15:16 AM , Rating: 2
love those times when the pot and kettle get together and start calling each other names. :D


RE: Why lungs defective?
By cochy on 2/2/2009 12:30:16 PM , Rating: 5
Me no brain?

hahaha hahahahah

Why I laugh?


RE: Why lungs defective?
By DonkeyRhubarb on 2/2/2009 12:50:49 PM , Rating: 5
Me fail English?

That's unpossible!


RE: Why lungs defective?
By kenji4life on 2/2/2009 8:55:49 PM , Rating: 2
"My cat's breath smells like catfood!!!"

My favorite from Homer:

"I am so smart, I am so smart, I am so smart, I am so smart, S-M-R-T, I mean, S-M-A-R-T."


RE: Why lungs defective?
By unrated on 2/2/2009 2:43:27 PM , Rating: 2
I think you are misunderestimating us.


RE: Why lungs defective?
By teldar on 2/2/2009 2:44:00 PM , Rating: 2
You would think so.... however.... Who have you talked to today and how have they made you feel?


RE: Why lungs defective?
By rcc on 2/3/2009 1:45:49 PM , Rating: 2
quote:
In mammals, I would think the brain would be the most advanced organ...


Well, yes, but.... have you ever tried to give an IQ test to a sheep, or goat?

:)

Seriously though, you have a point, but it is a pretty simple brain.


"I want people to see my movies in the best formats possible. For [Paramount] to deny people who have Blu-ray sucks!" -- Movie Director Michael Bay














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki