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Researchers at UC Riverside find solution to cell death problem vexing stem cell research
Date:9/7/2010

sults appear online, Sept. 7, in Nature Communications.

Sato explained that most of the current culture methods to grow hPS cells require animal-derived materials, such as Matrigel, for coating the culture surfaces. Without these materials, hPS cells cannot adhere to the culture plate. But the drawback of using them is that they could potentially cause contamination of hPS cells by introducing viruses and unknown pathogens.

"Another advantage of using blebbistatin is that we need no human- or animal-derived materials for coating the culture surfaces," he said. "This is because blebbistatin greatly facilitates the adhesion of cells to the culture surface. By combining blebbistatin and a chemically synthesized coating material, poly-D-lysine, we have developed a fully defined and simplified culture environment that allows hPS cells to grow under completely animal-free and contamination-free conditions."

Available through many companies, poly-D-lysine is a chemically synthesized animal-free coating material that is widely used for cell culture coating for other cell types. For hPS cells to adhere to the poly-D-lysine coating, blebbistatin must be added to the culture medium. "This new method shows that a novel combination of routinely available materials can create a completely distinct technological platform," Sato said.


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Contact: Iqbal Pittalwala
iqbal@ucr.edu
951-827-6050
University of California - Riverside
Source:Eurekalert  

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