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New technique advances bioprinting of cells
Date:7/1/2011

College Park, Md. (July 1, 2011) -- Ever since an ordinary office inkjet printer had its ink cartridges swapped out for a cargo of cells about 10 years ago and sprayed out cell-packed droplets to create living tissue, scientists and engineers have never looked at office equipment in quite the same way. They dream of using a specialized bio-inkjet printer to grow new body parts for organ transplants or tissues for making regenerative medicine repairs to ailing bodies. Both these new therapies begin with a carefully printed mass of embryonic stem cells. And now there's progress on getting that initial mass of stem cells printed.

By extending his pioneering acoustical work that applied sound waves to generate droplets from fluids, Dr. Utkan Demirci and his team at Harvard Medical School's (Brigham and Women's Hospital) Bio-Acoustic Mems in Medicine Laboratory report encouraging preliminary results at an early and crucial point in a stem cell's career known as embroid body formation. Their research results appear in the journal Biomicrofluids, published by the American Institute of Physics.

Getting the embroid body formed correctly and without mechanical trauma is key to preserving the stem cells' astounding ability to develop into any desired tissue. Their new automated bioprinting approach appears to do this better than manual pipetting in the "hang-drop" method traditionally used.

Notes Dr. Demirci: "To have the capability to manipulate cells in a high-throughput environment reliably and repeatedly, whether it is a single cell or tens of thousands of cells in a single droplet, has the potential to enable potential solutions to many problems in medicine and engineering."

Three research results stand out:

  • Enhanced uniformity of size and ability to control droplet size. These are key variables because they determine how the embroid bodies will grow.
  • Achieving a scalable sy
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Contact: Charles E. Blue
cblue@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

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