Novel air-liquid interface culture model to investigate stiffness-dependent behaviors of alveolar epithelial cells.
Biochem Biophys Res Commun
; 708: 149791, 2024 05 14.
Article
em En
| MEDLINE
| ID: mdl-38518719
ABSTRACT
Pulmonary alveoli are functional units in gas exchange in the lung, and their dysfunctions in lung diseases such as interstitial pneumonia are accompanied by fibrotic changes in structure, elevating the stiffness of extracellular matrix components. The present study aimed to test the hypothesis that such changes in alveoli stiffness induce functional alteration of epithelial cell functions, exacerbating lung diseases. For this, we have developed a novel method of culturing alveolar epithelial cells on polyacrylamide gel with different elastic modulus at an air-liquid interface. It was demonstrated that A549 cells on soft gels, mimicking the modulus of a healthy lung, upregulated mRNA expression and protein synthesis of surfactant protein C (SFTPC). By contrast, the cells on stiff gels, mimicking the modulus of the fibrotic lung, exhibited upregulation of SFTPC gene expression but not at the protein level. Cell morphology, as well as cell nucleus volume, were also different between the two types of gels.
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Base de dados:
MEDLINE
Assunto principal:
Fibrose Pulmonar
/
Células Epiteliais Alveolares
Limite:
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article