Now, 3D printer that can create tissue-like materi
Washington: Oxford University scientists have developed a custom-built programmable 3D printer that can create materials with several of the properties of living tissues.
The new type of material consists of thousands of connected water droplets, encapsulated within lipid films, which can perform some of the functions of the cells inside our bodies.
These printed "droplet networks" could be the building blocks of a new kind of technology for delivering drugs to places where they are needed and potentially one day replacing or interfacing with damaged human tissues.
Because droplet networks are entirely synthetic, have no genome and do not replicate, they avoid some of the problems associated with other approaches to creating artificial tissues - such as those that use stem cells.
"We aren`t trying to make materials that faithfully resemble tissues but rather structures that can carry out the functions of tissues," Professor Hagan Bayley of Oxford University`s Department of Chemistry, who led the research, said.
"We`ve shown that it is possible to create networks of tens of thousands connected droplets. The droplets can be printed with protein pores to form pathways through the network that mimic nerves and are able to transmit electrical signals from one side of a network to the other," Bayley said.
Each droplet is an aqueous compartment about 50 microns in diameter.
Although this is around five times larger than living cells the researchers believe there is no reason why they could not be made smaller. The networks remain stable for weeks.
The findings are published in the journal Science.
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