1-Bromopropane induces mitochondrial damage and lipid metabolism imbalance in respiratory epithelial cells through the PGC-1α/PPARα pathway
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View abstract on PubMed
Summary
This summary is machine-generated.1-Bromopropane (1-BP), a common VOC, damages respiratory cells by inducing oxidative stress and mitochondrial dysfunction. This damage is linked to lipid metabolism imbalance via the PGC-1α/PPARα pathway.
Area Of Science
- Toxicology
- Cell Biology
- Environmental Health
Background
- 1-Bromopropane (1-BP) is a volatile organic compound (VOC) increasingly found in occupational and residential settings.
- Its irritant properties necessitate further investigation into its effects on respiratory epithelium.
Purpose Of The Study
- To investigate the damaging effects of 1-BP on respiratory epithelial cells.
- To elucidate the underlying molecular mechanisms of 1-BP-induced respiratory cell damage.
Main Methods
- Exposure of respiratory epithelial cells to varying concentrations of 1-BP.
- Assessment of cell viability, oxidative stress, and vacuolation.
- RNA-sequencing (RNA-seq) analysis to identify affected pathways.
- Mitochondrial function assays (membrane potential, ATP, MFN2 levels).
- Investigation of the PGC-1α/PPARα signaling pathway and lipid metabolism.
Main Results
- 1-BP exposure reduced cell viability in a dose-dependent manner.
- Induced oxidative stress, vacuolation, and mitochondrial damage (ultrastructural changes, decreased membrane potential, ATP, MFN2).
- RNA-seq identified mitochondrial dysfunction pathways.
- 1-BP disrupted the PGC-1α/PPARα pathway, altering lipid metabolism gene expression and causing lipid accumulation.
- Bidirectional relationship between lipid metabolism imbalance and mitochondrial damage was observed.
Conclusions
- 1-BP induces respiratory epithelial cell damage through oxidative stress and mitochondrial dysfunction.
- The PGC-1α/PPARα signaling pathway and subsequent lipid metabolism imbalance are key mechanisms involved.
- 1-BP poses a potential risk to respiratory health, warranting further study and preventative measures.
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