
Bioprinting and 3D Printing of Blood Vessels
One of the biggest problems with printing human organs was the creation of blood vessels and ventricles. Making a solid mass of flesh was easy but adding a way to pump blood and other nutrients through the flesh was more difficult. Now researchers at the University of Sydney, Harvard, Stanford and MIT, have solved some of these problems by creating a skeleton of vessels and then growing human cells around them. Once the vessels are stable, they are able to dissolve the 3D printed material.
“Imagine being able to walk into a hospital and have a full organ printed – or bio-printed, as we call it – with all the cells, proteins and blood vessels in the right place, simply by pushing the ‘print’ button in your computer screen,” said Dr. Luiz Bertassoni of the University of Sydney. “While recreating little parts of tissues in the lab is something that we have already been able to do, the possibility of printing three-dimensional tissues with functional blood capillaries in the blink of an eye is a game changer.”
This technique will allow researchers to build “organs” in the lab by growing cells on the network of capillaries. The researchers believe this will eventually lead to true organ regeneration, which sounds amazing. Biomanufacturing is changing everything, starting at blood level.
…3D Bioprinting-Immortality… ((sugar cotton fibers produced by centrifuges machines are even finer…capillaries are between 2 tenth and 1 hundredth of a millimeter in diameter…perhaps… Could be use these machines adapted as “biocentrifuges” to make capillary micro-tubes with a biodegradable and binder yarn of sugar inside coated with cells?))…
…3D Bioprinting-Immortality (organ vascular network)… ((is it the vascular-capillary tree of an organ an aleatory “tangle”?, or is it a structure with symmetry, equidistance among capillary bifurcations always identical in each organ?. How would see it (see it with current technology) both capillary networks, blood and lymphatic, of 2 equal organs if they could been isolated from organ?, probably they are aleatory tangles sufficient for to do its work: in the blood-capillaries leave go out (suitable porosity…) plasma with O2 and nutrients towards, and CO2 which go into from, the intercellular space…and in the lymphatic-capillaries leave go into the surplus lymph with cellular refuses from intercellular space… Could then be used adapted centrifuges machines of sweet cotton, using some class of biodegradable and in water insoluble “sugar” and once formed the 2 different “cotton” tangles (blood and lymphatic) submerge they in a solution of cells with avidity for adhere to yarn-food from the tangle?…forming it the 2 labyrinthine capillary networks of hollow cellular micro-tubes to disappears the within biodegradable binder yarn?))…
…vascular capillary tree structure: how the Nature repeats successful designs, then obviously they must be the same such as in vegetable group in 2 equal trees branches finer and finer, growing from trunks with “approximated symmetry”…