Cell-depleted Lung Tissue a Matrix for New Rat Lung Using Stem Cells
August 20, 2010 2:41 PM
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(Source: Becoming Domestic)
Development and growth of new tissue proves to be successful
Researchers have released a new report showing the first successful
use of cell-depleted lung
in order to naturally create a new
from embryonic stem cells.
Joaquin Cortiella, MD, MPH, along with his research team members from Stanford University, University of Texas Medical Branch, Duke University and Brown Medical School, published their findings, a paper titled
"Influence of Acellular Natural Lung Matrix on Murine Embryonic Stem
Cell Differentiation and Tissue Formation"
, Part A.
Most cell and tissue types can be made and matured from embryonic
(ESC's) as long as they're in the proper setting with appropriate chemical signals that allow them to differentiate into certain cell types, eventually constructing 3-dimensional tissue structures. But other forms of synthetic tissue matrices are now required in order for this kind of technology to flourish.
"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," said Peter C. Johnson, MD, Vice President of Research and Development for Avery Medical Products, and Co-Editor-in-Chief of
"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
, lymphatic and neural systems."
Cellular components were removed from natural lung tissue in order to make the natural growth matrix for ESC's. Making and
using an acellular rat lung
as a biological matrix "for differentiating ESC's into lung tissue" provided evidence of repopulation of the matrix, improved cell retention and differentiation into specific cell types within the lung. In addition, the development and maturation of of the cells into 3-dimensional complex tissues were reported, and according to researchers, lung tissue growth is progressing normally and is producing the correct chemical signals to continue development.
"We found that a combination of mechanical, enzymatic and physical processes provided the most efficient and gentle way to remove the cells from the underlying lung ECM without significant loss of collagen or elastin, the major components of the natural lung," the authors wrote. "The production and use of decellularized lung to support development of lung tissue may lead to design of better synthetic matrices for clinical use and to the eventual production of engineered lung tissues on matrices that are suitable for regenerative medicine purposes."
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8/20/2010 11:32:57 PM
Chronic respiratory diseases are a complete nightmare. These diseases can be horrifically debilitating and can last for decades (i.e. they don't kill quickly). They effect ~8% of people aged over 55 (~15% of population) in 1st world nations.
Right now treatments mostly only slow the disease progression and reduce the secondary effects.
Replacement lungs that could be routinely implanted that didn't require anti-rejection medications would
improve the quality of life of something like 3,000,000 US citizens.
RE: Absolutely amazing
8/21/2010 2:05:41 PM
Sounds like they need to improve their VO2 max and use the remaining lung power more efficiently.
RE: Absolutely amazing
8/23/2010 2:17:13 PM
Nope, cause only a fraction could afford it.
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