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Scientists create artificial jellyfish from rat heart cells (+video)

Using rat heart muscle cells and a thin silicone film, researchers have constructed a swimming jellyfish like creature that can be used to study everything from marine biology to cardiac physiology.

Engineers from Caltech and Harvard University built an artificial jellyfish using rat cells.
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Using rat heart cells and silicone polymer, researchers have bioengineered a "jellyfish" that knows how to swim.

The odd jellyfish mimic, dubbed a "Medusoid" by its creators, is more than a curiosity. It's a natural biological pump, just like the human heart. That makes it a good model to use to study cardiac physiology, said study researcher Kevin Kit Parker, a bioengineer at Harvard University.

"The idea is to look at a muscular pump other than the heart or other muscular organ and see if there are some fundamental similarities, or design principles, that are conserved across them," Parker told LiveScience. "This study revealed that there are." [10 Amazing Facts About Your Heart]

Building a jelly

Jellyfish propel themselves with a pumping action, as anyone who has ever watched them float around an aquarium tank can attest. Parker was looking for a way to tackle questions about the heart that aren't well understood when he saw some jellyfish in a display in 2007.

"I thought, 'I can build this,'" he said.


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