Photo Credit: Printgreen Tiskajzeleno/Facebook
This 3D printer is the dream of every garden lover. Created at the University of Maribor in Slovenia by students Maja Petek, Tina Zidanšek, Urška Skaza, Danica Rženičnik and Simon Tržan, the printer unites art, technology and nature into one.
Pluripotent cells are great, but they can be difficult to steer into growing the way you want. Now scientists have found a new way to create 3D-printed ‘building blocks’ of embryonic stem cells (ESCs), which could be used for growing micro-organs, performing tissue regeneration experiments, testing medication and other biology research purposes.
While bioprinting with ESCs is not entirely new, until recently researchers have only managed to produce two-dimensional sheets of cells. Now a team of scientists from Tsingua University in China and Drexel University in Philadelphia have published a study in Biofabrication, introducing a novel technique for printing a grid-like 3D structure laden with stem cells.
In normal biological conditions ESCs naturally tend to cluster together into spherical ‘embryoid bodies’ – clumps of pluripotent cells which can go on to develop into any type of cell or tissue in the human body.
According to the Mayo Clinic, the Nerve regeneration is a complex process, because of its complexity, regrowth of nerves after injury or disease is extremely rare. Nerve damages more often than not are incurable and cause permanent disability, but now the scientist has proved that Advanced 3D printing methods could hold a possible cure for such patients.
To prove the proof of concept, a physically disabled rat was chosen as a test subject. The scientist used a specially designed 3D scanners and 3D Printers to create a custom silicone guide, 3D-printed chemical cues were added to the guide to promote both motor and sensory nerve regeneration. This was then implanted into the rat with surgically grafting it to the cut ends of the nerve. The operation was a extremely successful and the rat showed tremendous improvement in the way it walked within 10 to 12 weeks.
Big news! This 3D printer is our first step towards manufactured human organs. For perspective, the device can print a 100-cm blood vessel in two minutes.
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Researchers from Beijing and Philadelphia develop a method to 3D print embryonic stem cells in highly uniform blocks.
Researchers from Tsinghua University in Beijing, China and Drexel University in the US have developed an extrusion-based 3D printing method to produce highly uniform “blocks” of embryonic stem cells. These blocks are a grid-like 3D structure that was able to demonstrate cell viability and rapid self-renewal while maintaining high pluripotency. Lead author Wei Sun says, “It was really exciting to see that we could grow embryoid body in such a controlled manner. The grown embryoid body is uniform and homogenous, and serves as much better starting point for further tissue growth.”
Other common methods of printing stem cells are either done in 2D or with the “suspension” method, but these methods do not produce cells with the same cell uniformity and homogenous proliferation as that of the 3D method. This new method would enable researchers to perform experiments on tissue regeneration. Another author on the paper, Rui Yao, adds, “Our next step is to find out more about how we can vary the size of the embryoid body by changing the printing and structural parameters, and how the varying the embryoid body size leads to “manufacture” of different cell types.”
The human brain is a fragile and powerful tool, and is also fully dependent on a sturdy skull to keep it secure and intact. Unfortunately for some, there is a need for cranial reconstruction on people who were either born with a skull-related deficiency or critically injured in the head area. 3D printing has shown itself to be a potential game-changer in this regard; we have already witnessed successful titanium mesh skull replacements for one Chinese farmer and even a three-year-old girl born with congenital hydrocephalus. Now, researchers out of Western Australia are developing a new advanced 3D printing method that involves reconstructing the human skull from stem cell cultures.
The project, which is taking place within the Royal Perth Hospital and is being funded by the State Government, will provide their patients with damaged or surgically removed skull fragments with a high-quality cranial reconstruction surgery. The 3D printed stem cell-based skull replacement can potentially increase the success rate and the post-surgical quality of life of patients who require this intensive surgery.
A thyroid gland printed last March by 3D Printing Solutions is now proven to be fully functional, and experts say the results will revolutionize medicine.
We can build structures that resettle after quakes, and self-cooling homes – the trick is to 3D print custom building blocks, not whole buildings.
Coronary artery structure being 3-D bioprinted (credit: Carnegie Mellon University College of Engineering)
Carnegie Mellon scientists are creating cutting-edge technology that could one day solve the shortage of heart transplants, which are currently needed to repair damaged organs.
“We’ve been able to take MRI images of coronary arteries and 3-D images of embryonic hearts and 3-D bioprint them with unprecedented resolution and quality out of very soft materials like collagens, alginates and fibrins,” said Adam Feinberg, an associate professor of Materials Science and Engineering and Biomedical Engineering at Carnegie Mellon University.
You might not be able to control the 7Bot robotic arm with your mind or your eyes, but at least it’ll only cost you around $350 — cheaper than an iPhone, its creators point out — to get one. Even better, you don’t need to know how to code to program it: just physically guide the arm or use a gesture control device like a Kinect or a Leap motion sensor to make it mimic your movements. In the video below the fold and on its Kickstarter page, you can see it doing calligraphy after a team member’s grandfather physically taught it how. The team also managed make it paint cherry blossoms and do basic mathematics, and we’ll bet you can teach it other productive things, like how to terrorize your cat.
If you prefer the more hands-off approach, you can remotely control it using its 3D visualization app on a computer. And, in case you’re more tech-savvy than the average user, you can program it using the C and C++ open source APIs the 7Bot team provides. In addition to the basic model, the team also offers packages with more features, such as a version with two arms and one that comes with a 3D printer, though they’re also understandably more expensive. According to its campaign page, rewards should start shipping out as soon as January 2016, but as always, it’s best not to treat Kickstarter and other crowdfunding websites as a store.
