Scientists at the University of Bristol have developed a new kind of bio-ink. This discovery could allow the production of complex tissues for surgical implants. The new stem cell-containing bio-ink allows 3D printing of a living tissue, also known as bioprinting.
This bio-ink contains two different polymer-based components. One, extracted from seaweed, is a natural polymer. The other, used in the medical industry, is a sacrificial synthetic polymer. Both of these had a big role to play in the development of the bio-ink. The synthetic polymer alters the bio-ink from a liquid to a solid when its temperature rises. When cell nutrients are added the seaweed polymer provides structural support.
Dr. Adam Perriman, lead researcher from the School of Cellular and Molecular Medicine, stated that designing the new bio-ink was extremely challenging as it required a material that is printable and durable enough to maintain its shape if immersed in nutrients and does no harm to the cells. There was a lot of trial and error tests before they were able to formulate a working method.
http://sciencenewsjournal.com/3d-printing-living-tissue-stem-cell-bio-ink/
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