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Lung Tissue from Stem Cells can be Engineered by Natural Lung Material

by Kathy Jones on August 21, 2010 at 9:08 PM
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 Lung Tissue  from Stem Cells can be Engineered by Natural  Lung Material

Researchers have successfully used cell-depleted lung as a natural growth matrix for generating new rat lung from embryonic stem cells.

Embryonic stem cells (ESCs) have the potential to mature into virtually any type of cell and tissue type, but they require an appropriate environment and chemical signals to drive their differentiation into specific cell types and to form 3-dimensional tissue structures.

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Alternatives to available synthetic tissue matrices are needed to drive this technology forward and develop clinical applications for engineered lung tissue.

Sr. Joaquin Cortiella, and colleagues from University of Texas Medical Branch (Galveston), Stanford University (Palo Alto, CA), Brown Medical School (Providence, RI), and Duke University (Durham, NC), describe the first attempt to make acellular rat lung and use it as a biological matrix for differentiating ESCs into lung tissue.
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The authors present evidence of improved cell retention, repopulation of the matrix, and differentiation into the cell types present in healthy lung.

They also report signs that the cells are organizing into the 3-D structures characteristic of complex tissues and are producing the chemical signals and growth factors that guide lung tissue function and development.

In the study, the researchers described the process used to remove the cellular component of natural lung tissue and create a growth matrix for ESCs.

"Organ-specific extracellular matrices, properly prepared, are serving more and more as the appropriate structural scaffold for the recapitulation of a specific organ's tissues. This turns out to be especially true in an organ such as the lung, whose parenchyma must have a structure that accommodates atmospheric gas transmission as well as vascular, lymphatic, and neural systems," said Dr. Peter C. Johnson, Co-Editor-in-Chief of Tissue Engineering.

The study has been presented in a breakthrough article in Tissue engineering, Part A.

Source: ANI
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