Overexpression of Annexin A1 protects against benzo[a]pyrene‑induced bronchial epithelium injury

Molecular Medicine Reports
Yanfei Cui, Shengya Yang

Abstract

The incidence of asthma is increasing worldwide. Bronchial epithelium injury is common in asthma. The regulatory role of Annexin A1 (ANXA1) in bronchial epithelium injury is currently not well understood. The aim of the present study was to evaluate the role of ANXA1 on bronchial epithelium injury. The cell viability and levels of apoptosis were respectively tested by Cell Counting Kit‑8 and flow cytometry. Reactive oxygen species (ROS) content and the activity of oxidative indicators were assessed by commercial kits. Enzyme linked immunosorbent assay was performed to detect the activity of active caspase‑3. Reverse transcription‑quantitative polymerase chain reaction and western blot assays were used to determine the expression levels of the target factors. The results demonstrated that ANXA1 improved the viability of benzo[a]pyrene (Bap)‑treated bronchial epithelial cells. The Bap‑induced oxidative stress was mitigated by the reduction in ROS generation, and the regulation of the activity of superoxide dismutase, glutathione peroxidases, malondialdehyde and lactic dehydrogenase. In addition, apoptosis was decreased by ANXA1 via the reduction of the expression of B‑cell lymphoma 2 (Bcl‑2), and the increase in the expression of...Continue Reading

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Methods Mentioned

BETA
transfection
electrophoresis
Protein Assay
MDA
antisense oligonucleotides

Software Mentioned

GraphPad Prism

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