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Researchers engineer miniature human livers in the lab
Date:10/30/2010

WINSTON-SALEM, N.C. Saturday, Oct. 30, 2010 Researchers at the Institute for Regenerative Medicine at Wake Forest University Baptist Medical Center have reached an early, but important, milestone in the quest to grow replacement livers in the lab. They are the first to use human liver cells to successfully engineer miniature livers that function at least in a laboratory setting like human livers. The next step is to see if the livers will continue to function after transplantation in an animal model.

The ultimate goal of the research, which will be presented Sunday at the annual meeting of the American Association for the Study of Liver Diseases in Boston, is to provide a solution to the shortage of donor livers available for patients who need transplants. Laboratory-engineered livers could also be used to test the safety of new drugs.

"We are excited about the possibilities this research represents, but must stress that we're at an early stage and many technical hurdles must be overcome before it could benefit patients," said Shay Soker, Ph.D., professor of regenerative medicine and project director. "Not only must we learn how to grow billions of liver cells at one time in order to engineer livers large enough for patients, but we must determine whether these organs are safe to use in patients."

Pedro Baptista, PharmD, Ph.D., lead author on the study, said the project is the first time that human liver cells have been used to engineer livers in the lab. "Our hope is that once these organs are transplanted, they will maintain and gain function as they continue to develop," he said.

To engineer the organs, the scientists used animal livers that were treated with a mild detergent to remove all cells (a process called decellularization), leaving only the collagen "skeleton" or support structure. They then replaced the original cells with two types of human cells: immature liver cells known as progenitors, and endothelia
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Contact: Karen Richardson
krchrdsn@wfubmc.edu
336-716-4453
Wake Forest University Baptist Medical Center
Source:Eurekalert

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