Researchers at the University of Bristol, led by Dr. Adam Perriman, have hypothesized that using stem cells that are “welded together” may be the key to healing chronic wounds that often result from diabetes and other afflictions. The research involves using mesenchymal stem cells (the same type of stem cells found in teeth) and modifying their membranes so that the cells adhere to one another.
Researchers at UC Berkeley have been working on improving and scaling up and the printing of biomaterials with stem cells. They have developed a unique approach to ‘3D’ bioprinting by incorporating flash freezing into their process. They have improved on current techniques by printing layers of flat tissues [2D] and freezing them until they can be combined into a 3D structure. This technique was developed to overcome one of the major hurdles in scaling up 3D printing: the survival of the printed cells during the lengthy process of printing complex structures. By using 2D layers and flash freezing them before bringing them together to form a 3D organ or tissue structure, the new technique assures the survival of the cells throughout bigger, and more complex organs.