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Artificial Organs May Be Created With Cotton Candy Machines

February 9, 2016 By Ryan Harris Leave a Comment

"Man making cotton candy"

The same technique used by cotton candy machines can be applied to the creation of capillary veins.

(Mirror Daily, Unites States) – According to Leon Bellan, a mechanical engineering assistant professor at the University of Vanderbilt, artificial organs may be created with cotton candy machines.

Cotton Candy machines take a rough amount of pure sugar and then uses a large amount of centrifugal force to make the sugar crystals thinner and longer. It basically turns one crystal into a long lock of sugary goodness. What is more impressive is that the strains are actually quite resistant, even though the machine stretched them tremendously.

Leon Bellan was always fascinated by the way in which these wondrous childhood machines worked. They had such an impact on the mechanical engineering assistant professor that he applied the same principle to the process of creating artificial capillary veins for the artificially created organs with which scientists are experimenting at the moment.

Capillaries are very small veins with extremely thin walls that deliver nutrients and oxygen from the heart to the cells. They also carry away the waste, meaning the carbon dioxide. They work at a cellular level so it has been difficult for researchers to find a way to recreate something so small and functional. The artificial organs that have been developed in laboratory conditions cannot be sustained without properly functioning capillaries.

But it seems that cotton candy machines were the answer that laid right in front of the researchers. Bellan modified the technology in order to create artificial capillary veins and it seems that he actually managed to revolutionize the process.

The online “Advanced Healthcare Materials” magazine published on the 4th of February an article that described the procedure that Bellan used and the results he obtained. It seems like the “cotton candy” method managed to produce capillaries that are able to maintain the cells functional and viable for more than week. This is an incredible improvement over the methods that are currently in use.

The material used by Bellan and his team to create the artificial capillary veins is called hydrogel and it is, as the name suggests, a gel based on water. Its texture is similar to hair gel, but it also mimics soluble compounds diffusion. This means that it can act exactly like a capillary vein. And the best part is that it is strong enough to be molded and thinned.

But there are various types of cells and tissue in the human body, and Bellan must find a way to adapt his invention so that it will be compatible with all of them. For the moment, the Vanderbilt assistant professor is working on a “toolbox”, a basic set of ingredients that will allow other researchers to make use of his new invention.

Image source: www.wikimedia.org

Filed Under: Tech & Science Tagged With: 3D printing, artificial organs, cotton candy machines, Vanderbilt University

Molecular-Level 3D Printer Based on Plants Could Speed Up Drug Development

March 13, 2015 By Tara Hamilton Leave a Comment

science issue molecule makingChemists at the University of Illinois, under the supervision of chemistry professor and medical doctor Martin D. Burke, built a molecule-making machine, which functions on the principles of a 3D-printer, but uses knowledge we gained from plants. The aim of their research was to speed up the process of generating molecules, in order to make it available to non-specialists. To achieve this, Professor Burke said, a complicated process like chemical synthesis had to be made simple, so that it could be automatized.

Most drugs available today for various medical conditions are based on small molecules – a category of complex but compact chemical structures, which are also used in solar cells and LEDs and which play an essential role in the functioning of living cells. Because these molecules are difficult to synthetize, the progress of pharmaceutical companies has been significantly slowed down so far.

To generate molecules mechanically, you have to first create their “building blocks” – smaller components that aggregate into molecules through a simple reaction, once their identical connector pieces are stitched together. In order to make the device work, Burke’s group constructed a method that adds one piece at a time and wipes away the excess before adding the next building block. Using this technique, the molecular 3D-printer can make up 14 different kinds of small molecules, some of which are very difficult to obtain by traditional methods. Now, a simple click of the mouse can set off the process, once the printer has been created.

Miles Fabian, a member of the Institute of General Medical Sciences within the National Institute of Health (which funded part of Burke’s research), declared his enthusiasm for the impact he foresees the new molecule-making machine will have on the synthetic chemistry market, as well as on research in bio sciences.

So far, the new technology has been licensed only to REVOLUTION Medicines, Inc., a company which produces anti-fungal medications, but Burke hopes that his results will be used in other therapeutic fields as well. He believes that the industrialization of the molecule-making technology will help improve the invention. The new discovery is featured on the cover of the March 13 issue of Science Magazine.

image source: Science

Filed Under: Tech & Science Tagged With: 3D printing, Martin D. Burke, molecular 3D printing, molecule-making machine, new drug-development possibilities, new technologies

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