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Updated: Oct 4, 2025

Engineered Lung Tissues Prepared from Decellularized Lung Slices
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Engineered Lung Tissues Prepared from Decellularized Lung Slices.

Katherine L Leiby1, Ronald Ng2, Stuart G Campbell3

  • 1Department of Biomedical Engineering, Yale University; Yale School of Medicine.

Journal of Visualized Experiments : Jove
|February 7, 2022
PubMed
Summary
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Engineered lung tissues (ELTs) were created using decellularized lung slices for a 3D model. This organotypic platform supports multiple cell types and mimics native lung architecture for research.

Area of Science:

  • Biomedical Engineering
  • Regenerative Medicine
  • Pulmonary Biology

Background:

  • Existing in vitro lung models lack the complexity of native alveoli.
  • Current organoid models often use animal-derived components and limited cell types.

Purpose of the Study:

  • To develop an improved 3D lung model that recapitulates alveolar architecture and cellularity.
  • To create an organotypic culture platform for studying lung cell interactions and signaling.

Main Methods:

  • Generating engineered lung tissues (ELTs) by recellularizing decellularized precision-cut lung slices (PCLS).
  • Utilizing a cassette system for standardized handling and cell seeding.
  • Culturing alveolar epithelial type 2 cells (AEC2s) in a serum-free, chemically-defined medium.

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Main Results:

  • ELTs contain alveolar-like structures with epithelium, mesenchyme, and endothelium within a native-like extracellular matrix.
  • AEC2s remained viable in ELT culture for over 7 days.
  • The protocol allows for parallel generation of multiple ELTs.

Conclusions:

  • Engineered lung tissues (ELTs) provide a more accurate ex vivo model of the human lung alveolus.
  • This platform facilitates the study of cell-cell and cell-matrix interactions.
  • ELTs are suitable for investigating biochemical signals regulating alveolar cells and their niche.