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Scientist creates lifelike cells out of metal
Researcher says he has created living cells made of metal instead of carbon — and they may be evolving.
Fri, Sep 16 2011 at 1:38 AM
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Photo: p.Gordon/Flickr
Scientists trying to create artificial life generally work under the assumption that life must be carbon-based, but what if a living thing could be made from another element?
One British researcher may have proven that theory, potentially rewriting the book of life. Lee Cronin of the University of Glasgow has created lifelike cells from metal — a feat few believed feasible. The discovery opens the door to the possibility that there may be life forms in the universe not based on carbon, reports New Scientist.
Even more remarkable, Cronin has hinted that the metal-based cells may be replicating themselves and evolving.
"I am 100 percent positive that we can get evolution to work outside organic biology," he said.
The high-functioning "cells" that Cronin has built are constructed from large polyoxometalates derived from a range of metal atoms, like tungsten. He gets them to assemble in bubbly spheres by mixing them in a specialized saline solution, and calls the resultant cell-like structures "inorganic chemical cells," or iCHELLs.
The metallic bubbles are certainly cell-like, but are they actually alive? Cronin has made a compelling case for the comparison by constructing the iCHELLS with a number of features that make them function much as real cells do. For instance, by modifying the outer oxide structure of the bubbles so that they are porous, he has essentially built iCHELLs with membranes capable of selectively allowing chemicals in and out according to size, much as what happens with the walls of real cells.
Cronin's team has also created bubbles inside of bubbles, which opens the door to the possibility of developing specialized "organelles." Even more compelling, some of the iCHELLs are being equipped with the ability to photosynthesize. The process is still rudimentary, but by linking some oxide molecules to light sensitive dyes, the team has constructed a membrane that splits water into hydrogen ions, electrons and oxygen when illuminated — which is how photosynthesis begins in real cells.
Of course, the most compelling lifelike quality of the iCHELLs so far is their ability to evolve. Although they aren't equipped with anything remotely resembling DNA, and therefore can't replicate themselves in the same way that real cells do, Cronin has nevertheless managed to create some polyoxometalates that can use each other as templates to self-replicate. Furthermore, he is currently embarked on a seven-month experiment to see if iCHELLs placed in different environments will evolve.
The early results have been encouraging. "I think we have just shown the first droplets that can evolve," Cronin hinted.
Though the idea of a strange new metal-based form of life rapidly evolving in a lab somewhere on Earth may sound ominous, the finding could forever change how life is defined. It also greatly improves the odds of life existing elsewhere in the universe, since life forms could potentially be built from any number of different elements.
The possibilities are exciting to imagine, even if Cronin's iCHELLs eventually fall short of full-blown living cells. His research may have already blown the door off previous paradigms about the conditions necessary for life to form.
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the idea is weather or not it's possible for life to form in ways which we currently think are impossible. it's not aimed at creating "artificial life" though if this type of life shares so many qualities with life as we currently understand it, is it really so artificial?
But does it blend?
just sayin
Bring on the grey goo.
BUT IF IT CAN'T DIVIDE...HW CAN IT BE CALLED LIVING...WILL IT GROW?
I very much doubt you can divide and yet you are 'called living'. The whole point of this experiment is that it will cause definitions of life to be rethought so there is no point trying to call it living by standards that may not apply in the near future.
What in your mind separates genuine life and artificial life?
is it real??????
We are the Borg.
AUTOBOTS ROLL OUT!!!!
Hover your mouse over the image. It is an image of mercury, titled "droplets of mercury".
What...? No T-1000 or Skynet jokes?
If researchers can use metal to metal make air out of water, and oxygen out of carbon dioxide.
Then this gentleman is exclaiming over the wrong part of his discovery.
If they can make hydrogen out of water, whats to keep them from making water out of hydrogen? Fuel Cell.
In all the comments, I sense God experimenting with thoughts for another big bang!
How could a second big bang happen in a Universe which has already expanded?
easy. The universe implodes, then when it reaches the furthest inwards it can go, KABLOOIE! New big bang. Done and done.
But space is supposed to be infinite. That works both ways. So if there is no end then that means that there is no limit to how far inwards it can go
Is there any research paper for this? on the web or something? I mean, sounds pretty interesting but i rather see something more technical (sorry for my english)
Here's a thought-- why don't we take care of the life on earth that DOES exist?
I have nothing against this research. It just seems like ironic news when, all over the planet, the magnificent, complex web of life is being degraded at such a pace...
you sir are just Not seeing the big picture, you comment is irrelevant.
This feels like a very familiar script to me....hmmmm.....
Paging Catherine Weaver!
So, he's creating Transformers, right?
we need to stop people like this for they are gonna create something terrible and we'll be done
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