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Related Experiment Video

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Quantifying Single Microvessel Permeability in Isolated Blood-perfused Rat Lung Preparation
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A microdevice for parallelized pulmonary permeability studies.

Ludivine Bol1, Jean-Christophe Galas, Hervé Hillaireau

  • 1Faculté de Pharmacie, Université Paris-Sud, 92290, Châtenay-Malabry, France.

Biomedical Microdevices
|December 17, 2013
PubMed
Summary
This summary is machine-generated.

A novel microdevice enables lung barrier permeability studies using Calu-3 cells. This system accurately models the pulmonary barrier, aiding drug development for lung administration.

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Area of Science:

  • Biomedical Engineering
  • Cell Biology
  • Drug Delivery

Background:

  • Pulmonary drug delivery requires effective models of the lung barrier.
  • Existing models like Transwell systems have limitations in mimicking in vivo conditions.
  • Developing advanced microdevices is crucial for accurate permeability studies.

Purpose of the Study:

  • To develop and validate a microdevice for studying lung barrier permeability.
  • To assess the integrity and functionality of Calu-3 cell models in the microdevice.
  • To evaluate the microdevice's potential for drug screening and formulation development.

Main Methods:

  • Culturing Calu-3 cells at the air-liquid interface (AIC) in a microdevice with a porous membrane.
  • Utilizing a single basolateral reservoir to simplify medium renewal.
  • Assessing barrier integrity via trans-epithelial electrical resistance (TEER), confocal imaging, and ¹⁴C-sucrose permeability assays.
  • Comparing microdevice performance to Transwell systems.

Main Results:

  • Confluent Calu-3 cell layers formed within one week in the microdevice.
  • The microdevice demonstrated comparable bioelectrical properties to Transwell systems.
  • Confocal imaging confirmed the presence of tight junctions, and low ¹⁴C-sucrose permeability indicated a functional barrier.
  • The microdevice successfully modeled the pulmonary barrier's solute diffusion resistance.

Conclusions:

  • The developed microdevice provides a robust platform for lung barrier permeability studies.
  • It enables effective monitoring of biomolecule transport across the pulmonary barrier.
  • This technology can accelerate the screening of formulations for pulmonary drug administration.