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Updated: Feb 13, 2026

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A Novel Precision-cut lung slice stretch model using removable inflation materials.

Cassidy Potter1,2, Jeannie Haak3, David Dean3,4,5

  • 1Department of Dermatology, University of Rochester, Rochester, NY.

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|February 12, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a novel precision-cut lung slice (PCLS) model using removable hydrogels and poly(ethylene glycol) (PEG) for improved cyclic mechanical stretch (CMS) studies. This enhanced platform supports lung tissue viability and phenotype retention for biochemical analysis.

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Area of Science:

  • Biotechnology
  • Respiratory Physiology
  • Tissue Engineering

Background:

  • Mechanical stretch is a critical biomechanical stimulus for respiratory system development and differentiation.
  • Abnormal stretch responses contribute to acute lung injury and extracellular matrix (ECM) disruption.
  • Current in vitro cyclic mechanical stretch (CMS) models for human lung tissue have limitations and poor in vivo validation.

Purpose of the Study:

  • To develop and validate an improved in vitro model for studying lung tissue response to mechanical stretch.
  • To overcome limitations of existing precision-cut lung slice (PCLS) models in stretch studies.
  • To enable more accurate biochemical analysis of lung tissue under cyclic mechanical stretch (CMS).

Main Methods:

  • Utilized a novel precision-cut lung slice (PCLS) approach with a removable hydrogel for inflation.
  • Incorporated supportive poly(ethylene glycol) (PEG) hydrogels to enhance cell viability and phenotype.
  • Applied cyclic mechanical stretch (CMS) to the engineered PCLS model.

Main Results:

  • The novel PCLS model demonstrated improved viability and phenotype retention under CMS.
  • The use of removable hydrogels and PEG hydrogels overcame limitations of previous agarose-based PCLS models.
  • The platform is suitable for subsequent biochemical assays like transcriptomics and proteomics.

Conclusions:

  • The developed PCLS model offers a significant advancement for in vitro lung stretch studies.
  • This innovative platform provides a more physiologically relevant microenvironment for lung research.
  • The model facilitates detailed biochemical analysis of lung tissue responses to mechanical stimuli.