Abstract
There is currently a significant interest in understanding how cells and tissues respond to mechanical stimuli, but current approaches are limited in their capability for measuring responses in real time in live cells or viable tissue. A protocol was developed with the use of a cell actuator to distend live cells grown on or tissues attached to an elastic substrate while imaging with confocal and atomic force microscopy (AFM). Preliminary studies show that tonic stretching of human bronchial epithelial cells caused a significant increase in the production of mitochondrial superoxide. Moreover, using this protocol, alveolar epithelial cells were stretched and imaged, which showed direct damage to the epithelial cells by overdistention simulating one form of lung injury in vitro. A protocol to conduct AFM nano-indentation on stretched cells is also provided.
Original language | English |
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Article number | e52737 |
Pages (from-to) | 1-12 |
Number of pages | 12 |
Journal | Journal of Visualized Experiments |
Volume | 2015 |
Issue number | 102 |
DOIs | |
State | Published - Aug 19 2015 |
Bibliographical note
Publisher Copyright:© 2015 Journal of Visualized Experiments.
Funding
Funders | Funder number |
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National Heart, Lung, and Blood Institute (NHLBI) | R01HL123540 |
Keywords
- Acute lung injury
- Bioengineering
- Bioreactor
- Mechanobiology
- Mechanotransduction
- Overdistention
- Pulmonary epithelium
ASJC Scopus subject areas
- General Neuroscience
- General Chemical Engineering
- General Biochemistry, Genetics and Molecular Biology
- General Immunology and Microbiology