Monday, 30 January 2017

A Cotton Candy Machine Helps These Scientists Grow Human Cells

Biological engineers are developing a method for regrowing human tissue that’s straight out of a macabre carnival.

Hak-Joon Sung and Leon Bellan at Vanderbilt University developed a novel method of spinning capillary-sized polymer fibers out of a cotton candy machine, as part of their work in growing artificial human tissue.

Their work focuses on rebuilding damaged tissue in the heart, brain, blood vessels or other parts of the body, the scientists explain in a National Science Foundation video. One of the biggest hurdles in developing viable tissue is making the scaffolding on which cells live. Capillaries, the smallest type of blood vessel which are 10 times thinner than a human hair, are that support structure for blood throughout our bodies. Cells stick close to those capillaries—within a hair’s distance or less—in order to get oxygen or nutrients.

The size of fibers flung out of a cotton candy machine are very close to the size of capillaries, the researchers found. Polymer fibers spin out of the machine, which are then hardened in a hydrogel, a jelly-like material, and dissolved away. What’s left are capillary-like chambers, which they can grow cells around.

Using a circus appliance to grow human tissue sounds like horror fodder, but being able to build such delicate structures artificially is a step toward grown-on-demand regenerative organs and tissue.

from A Cotton Candy Machine Helps These Scientists Grow Human Cells

4 comments:

  1. 3d bioprinting = Immortality = go to stars

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  2. (1)...interstellar travel (to the third world)... we come in our ship from faraway...are reaching finally, that star they call Sun...our destiny that third planet is distinguished from the others aridly and barrens with its luminescent blue against the dark background of the Universe...now we are under its spell...they call the Earth...we pick up its broadcastings TV...we are hearing the stories that they tell...they speak strangely but we understand... We see at its inhabitants, the human beings very similar to us, outside... We have been studying them in their lifestyles, some in developed places with high level, and others in those other places to that they call...The Third World...suffering, hunger, malnutrition, war, calamities and horrors against the feeble... There´s no limit to what we feel... Are we dreaming or is it all real?...is it true?... We see at their leaders to they call religious...(Torquemadas who were "executioners" against the Human Beings in the Middle Age with their Inquisition on behalf of their sanguinary gods...and still have the arrogance to put their secrets and sectarian religious symbols (channel TV Discovery Max, "secret societies") in popular bank note 1 dollar, if anyone doubt who governs in the shadow the World)...well fattened in their golden palaces...while children perish converted into skeletons with some skin and eyes full of flies, in the arms of their horrified mothers who do not have even a glass of clean water to drink them...religious and political leaders who are purposely keeping the horror because WITHOUT POOR AND IGNORANT THERE IS NOT RELIGION... Have to separate between the worthy concept, strictly personal, believing in a Goddess or a God (wheat) and Humankind´s anxiety of Eternity;...from the manipulation and interested ancient Lie that is religion (darnel)... religions only are a Malign Tale for social control to serve at pontifices, monarchies and politicians...who hypocritically first created the poor..."the poor are always with us"...and after give them an alms... IT´S TRUTH THAT RELIGION IS LIE

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  3. 3D Bioprinting-Immortality... ((sugar cotton fibers produced by centrifuge machines are even finer...capillaries are between 2 tenth and 1 hundredth of a millimeter in diameter...perhaps... Could be used these machines adapted as "biocentrifuges" to make capillary micro-tubes with a biodegradable and binder yarn of sugar inside coated with endothelial cells?))

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  4. ...3D Bioprinting-Immortality (making capillaries)...Also could be synthetic capillaries?, both networks are put into the mold with the organ´s shape, mold that Bioprinter fills with cells. Network capillary-skeleton, porosity among adjacent cells, A FINE MESH OF FIBROUS CONNECTIVE TISSUE fastening the cells: collagen?...fibrin? a blood´s protein in salty water insoluble who forms the cell´s-subjection-mesh of blood coagula... SUITABLE POROSITY: (would to watch very closely capillaries at microscope) both capillary networks (blood and lymphatic) could have a natural unequal aleatory distribution (Better or Worse Equidistance in each organism, better or worse equal feeding to ALL tissue´s cells) of MESH´S HOLES (in blood capillaries: Exit for plasma, 1 liter/hour total in human whole organism, through this plasma go exiting continuously at their discretion towards the intercellular-space O2, nutrients, leukocytes...▓...or Entrance for CO2. In lymphatic capillaries: Entrance for surplus lymp with cellular refuses lactic acid, etc...▓...who cause muscular fatigue). Maybe the better or worse equidistant porosity of skeleton-mesh cell´s-subjection in each capillary tube; besides of genetics: ...size and quantity of mitochondria per cell (only are inherited the mother´s mitochondria...), distance of insertion´s point the tendon of a muscle from the articulation to a bone (law of lever), etc...; a natural cause for to win or not to win a medal in Olympic Games.

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