3D printed organs: We’re closer to solving the problem of how to supply them with blood

unnamed file
Injected hydrogel into a 3D printed mold produced this artificial kidney. Image: University of Rochester Medical Center

We’re tantalizingly close to growing organs in the lab, but the biggest remaining challenge has been creating the fine networks of blood vessels required to keep them alive. Now researchers have shown that a common food dye could solve the problem.

But a common challenge … is what is known as vascularization. Building bulk tissue isn’t too challenging, but scientists have struggled to create the intricate networks of tiny blood vessels that carry nutrients and oxygen deep into organs and carry waste products out. That’s why most demonstrations thus far have been of organelles just an inch or two across or hollow structures like throats or bladders.

Related article:  'AI in archeology' pinpointing new excavation sites at an ‘unimaginable’ pace

[A] team of American researchers led by scientists at Rice University in Texas have created a 3D bioprinter that can print vessels.

The group used a common 3D printing technique called projection stereolithography, which uses light to solidify light-sensitive resins layer by layer. In this case, they used a solution that converts into a soft hydrogel when exposed to blue light.

They used the approach to create an intricate model of the lung with tiny air-sacs surrounded by fine blood vessels. In experiments they showed the artificial organ could oxygenate human blood.

Read full, original post: New Progress in the Biggest Challenge With 3D Printed Organs

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Video: Test everyone – Slovakia goes its own way to control COVID

Video: Test everyone – Slovakia goes its own way to control COVID

As Europe sees record coronavirus cases and deaths, Slovakia is testing its entire adult population. WSJ's Drew Hinshaw explains how ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
globalmethanebudget globalcarbonproject cropped x

Infographic: Cows cause climate change? Agriculture scientist says ‘belching bovines’ get too much blame

A recent interview by Caroline Stocks, a UK journalist who writes about food, agriculture and the environment, of air quality ...
organic hillside sweet corn x

Organic v conventional using GMOs: Which is the more sustainable farming?

Many consumers spend more for organic food to avoid genetically modified products in part because they believe that “industrial agriculture” ...
benjamin franklin x

Are most GMO safety studies funded by industry?

The assertion that biotech companies do the research and the government just signs off on it is false ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies for tighter GMO legislation and famously puts out annual "dirty dozen" list of fruits and ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be the prime mover behind the ongoing campaign against agricultural biotechnology at Consumer Reports. He is an ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend