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Manufacturing a new gut to treat GI diseases
Date:12/3/2013

Boston, MA For those living with gastrointestinal disorders, such as ulcers or Crohn's disease, treatment often means quelling uncomfortable symptoms through medications or dietary changes. But what if one day treatment meant doing away with the old gut for a new gut free of inflamed or diseased tissues?

That is where scientists at Brigham and Women's Hospital (BWH) and Massachusetts Institute of Technology (MIT) are hoping their new study findings will lead. In their work, the researchers were able to grow extensive numbers of intestinal stem cells, then coax them to develop into different types of mature intestinal cells.

The study is published online in this month's Nature Methods.

"Being able to produce a large inventory of intestinal stem cells could be incredibly useful for stem cell therapy, where the cells could be delivered to patients to treat diseases such as Crohn's disease and ulcerative colitis," said Jeffrey Karp, PhD, Division of Biomedical Engineering, BWH Department of Medicine, co-senior study author. "These cells could also be useful for pharmaceutical companies to screen and identify new drugs that could regulate diseases from inflammatory bowel disease, to diabetes, to obesity. However, to date there hasn't been a way to expand intestinal stem cell numbers."

In the "crypts" of the human gut are immature adult stem cells that live alongside specialized cells called Paneth cells. The stem cells remain immature as long as they remain in contact with Paneth cells. But the researchers found that when Paneth cells are removed and replaced with two small molecules involved in cell signaling, these molecules could direct the stem cells to develop into pure populations of proliferating stem cells. By introducing other molecules to the mix, the pure cells could further develop into specialized mature intestinal cells.

"This is an opportunity to generate a large number of relevant mature ga
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Contact: Marjorie Montemayor-Quellenberg
mmontemayor-quellenberg@partners.org
617-525-6383
Brigham and Women's Hospital
Source:Eurekalert

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