Grape Seed Proanthocyanidin Inhibits Mucin Synthesis and Viral Replication by Suppression of AP-1 and NF-κB via p38 MAPKs/JNK Signaling Pathways in Respiratory Syncytial Virus-Infected A549 Cells

Journal of Agricultural and Food Chemistry
Jin-Woo LeeNamhyun Chung

Abstract

Airway epithelial cells are often infected by respiratory syncytial virus (RSV), one of the most common causes of asthma, bronchiolitis, chronic obstructive pulmonary disease, and pneumonia. During the infection process, excessive mucins instigate airway inflammation. However, the mechanism underlying RSV-induced airway hyper-responsiveness and inflammation is poorly understood. Furthermore, no reliable vaccines or drugs for antiviral therapy are available. In this study, the effect of the natural compound grape seed proanthocyanidin (GSP) on RSV-infected human airway epithelial cells A549 was evaluated. After pretreatment of the cells with or without exposure to RSV with 5-10 μg GSP/mL, the expression of various mucins (MUC1, MUC2, MUC5AC, MUC5B, and MUC8) was evaluated by real-time polymerase chain reaction, enzyme-linked immunosorbent assay, and Western blotting, as well as confocal microscopy. We found that GSP significantly decreased RSV-induced mucin synthesis at the mRNA and protein levels. In addition, GSP suppressed the RSV-induced signaling pathways, including extracellular signal-regulated kinase, c-Jun N-terminal kinase, and p38, together with nuclear factor kappa B (NF-κB) and activating protein-1 family members (c...Continue Reading

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Citations

Feb 9, 2018·Journal of Clinical Medicine·Hee-Jae Cha, Kyoung Seob Song
Oct 23, 2018·Phytotherapy Research : PTR·Xiangling MengJinghua Yu
Jan 11, 2019·International Journal of Molecular Medicine·Shiyao XuLing Li
Jul 17, 2019·BioMed Research International·Qinghua ZhangJunling Yang
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Dec 17, 2020·Frontiers in Pharmacology·Roodabeh Bahramsoltani, Roja Rahimi
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Feb 27, 2018·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Fangzheng ChenSituo Zheng

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