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Relationship Between ACSL4-Mediated Ferroptosis and Chronic Obstructive Pulmonary Disease
1Graduate School, Dalian Medical University, Dalian, Liaoning, People's Republic of China.
International Journal of Chronic Obstructive Pulmonary Disease
|February 23, 2023
Summary
ACSL4-mediated ferroptosis in lung epithelial cells contributes to chronic obstructive pulmonary disease (COPD) development. Inhibiting ACSL4 alleviates ferroptosis and improves COPD symptoms in mouse models.
Area of Science:
- Cell Biology
- Pulmonary Medicine
- Toxicology
Background:
- Cigarette smoke exposure is a primary risk factor for COPD.
- The precise mechanisms underlying COPD pathogenesis remain incompletely understood.
- Ferroptosis, a regulated form of cell death, is implicated in various lung diseases.
Purpose of the Study:
- To investigate the role of ACSL4-mediated ferroptosis in lung epithelial cells during COPD development.
- To determine the association between ACSL4 expression, ferroptosis, and COPD.
Main Methods:
- COPD models were established using cigarette smoke extracts (CSEs) in cell and animal studies.
- Assessed cell viability, lipid ROS, iron deposition, and ferroptosis markers.
- Analyzed ACSL4 mRNA and protein expression via RT-PCR and Western blotting.
- Utilized lentivirus and siRNA to interfere with ACSL4 expression.
Main Results:
- CSE exposure induced ferroptosis and upregulated ACSL4 in lung epithelial cells.
- ACSL4 interference reduced ferroptosis, restored mitochondrial morphology, and alleviated COPD symptoms in mice.
- Decreased respiratory rate and enhanced pause were observed in COPD mice after ACSL4 interference.
Conclusions:
- ACSL4-mediated ferroptosis in lung epithelial cells is significantly associated with COPD.
- Targeting ACSL4 may represent a therapeutic strategy for COPD management.
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