Related Experiment Video
Updated: May 3, 2026
16:45
Nonhuman Primate Lung Decellularization and Recellularization Using a Specialized Large-organ Bioreactor
Published on: December 15, 2013
9.2K
Comparative decellularization and recellularization of normal versus emphysematous human lungs
Darcy E Wagner1, Nicholas R Bonenfant1, Charles S Parsons2
1Department of Medicine, University of Vermont, College of Medicine, 226 Health Science Research Facility, Burlington, VT 05405, USA.
Biomaterials
|January 28, 2014
Summary
Decellularized lungs from patients with chronic obstructive pulmonary disease (COPD) fail to support cell growth for tissue engineering. This suggests that while the extracellular matrix is preserved, the 3D scaffold architecture is critical for cell survival.
Area of Science:
- Regenerative Medicine
- Tissue Engineering
- Pulmonary Research
Background:
- Acellular whole human lung scaffolds offer potential for ex vivo tissue engineering.
- The suitability of decellularizing and recellularizing lungs from chronic lung disease patients, like COPD, remains uncertain.
Purpose of the Study:
- To investigate the decellularization and recellularization potential of human lungs from normal and COPD patients.
- To assess the impact of COPD-derived lung scaffolds on cell engraftment, survival, and proliferation.
Main Methods:
- Cadaveric human lungs from normal and COPD patients were decellularized.
- Histochemical, immunohistochemical staining, electron microscopy, and mass spectrometry analyzed scaffold integrity.
- Various human cell types were inoculated into decellularized lung segments and solubilized ECM.
Main Results:
- Decellularized lungs from both normal and COPD patients retained their characteristic extracellular matrix (ECM) and architecture.
- Normal lung scaffolds supported robust cell engraftment and growth for up to one month.
- Decellularized emphysematous lung scaffolds failed to support cell survival beyond one week, despite initial attachment.
- Cell attachment and proliferation were comparable on solubilized ECM from both normal and COPD lungs.
Conclusions:
- Decellularized emphysematous lung scaffolds lack the necessary 3D architecture to support sustained cell growth for tissue engineering.
- While ECM composition is retained, the structural integrity of COPD-derived scaffolds is insufficient for successful lung tissue regeneration.
