06:27 pm
21 February 2019

Scientists have developed new 3D printing technology of micro-organ

I3 pro C 3D printers are not only can make some plastic gadget–scientists say loading 3D structure of embryonic stem cells may help doctors in the future micro-organs needed to make organ transplant patients. Embryonic stem cells from human embryos can develop into a variety of cells such as brain cells, heart cells and bone cells. So they’re suitable for regenerative medicine–to repair or replace damaged cells, tissues and organs.
Scientists often use a variety of biological factors of embryonic stem cells into specific tissue–a process called differentiation. Cells form at the beginning of the process known as globular mass of the embryo, the embryo was modelled on an activated form of early embryonic development.gygu
Studies have shown that optimal conditions for growth of embryonic stem cells is not a flat Petri dish, but the 3D environment of human body. Recently, scientists have developed a 3D printer of embryonic stem cells. 3D layers of sedimentary material, just like regular printer inkjet, on a layer of material it can stack another layer of material to build 3D objects.The past, embryonic stem cell 3D printer can make flat arrangement or simple accumulation, which is called “stalagmites”. Now, researchers say they developed a method that can print the 3D for the first time, for filling of embryonic stem cells.jnnj
Co-author Wei Sun currently is Beijing’s Tsinghua University (Tsinghua University) and Drexel University in Philadelphia (Drexel University) Professor of mechanical engineering, he told LiveScience: “under controlled conditions, we can use 3D printing technology to produce the embryo, produce identical embryonic stem cell module. ”
Sun added: “these modules can in theory like the LEGO building organizations and even micro-organs. ”
Experiment, the researchers also use water gel print mouse embryonic stem cells, the materials and the materials of the same kind of soft contact lenses. Fragile due to embryonic stem cells, scientists must protect them-for example, to find the most suitable temperature and increase the print nozzles.
According to the latest research, 90% of the cells can survive in the printing process. Researchers said these cells proliferate into the embryo in a Hydrogel scaffolds, embryonic stem cells also secrete health are secreted proteins. Scientists can also dissolve the gel get the embryo.The embryo size and monodisperse will strongly influence would become the cells type. Researchers said their new technology and existing technology, better able to control the size of the embryo and single dispersion.
thySun said in a statement: “prepared embryo is pure can be used as tissue growth is a good starting point. Under controlled conditions, can produce embryo is very exciting. ”
Tsinghua University, Beijing (TsinghuaUniversity), Associate Professor of the partner Rui Yao says: “our next step will be to study how by changing the print and parameters to adjust the size of the embryo, and how by changing the embryo to produce different kinds of cells. ”
Long term, the researchers want to print different kinds of embryo. Yao said: “this can promote the growth of different cells at the same time approaching, laying the Foundation for micro-lab-grown organs. ”