Abstract
Background
Respiratory syncytial virus (RSV)-induced oxidative stress and inflammation are the leading causes of many severe diseases, especially in infants and children. Although many studies focused on the mechanism during RSV infection, an effective therapy is still urgently needed.
Objectives
In our study, we examined the function of pratensein glycoside (PG) in the progression of RSV-induced infection in vitro.
Results
PG treatment significantly inhibited RSV-induced oxidative stress and inflammation in a dose-dependent manner. We found that 40 μM of PG had no significant cytotoxicity and exerted an anti-viral effect. RSV infection led to the activation of the TGF-β signaling pathway, which in turn promoted RSV infection. We hyperactivated the TGF-β signaling pathway by TGF-β and found that PG treatment can repress the pro-inflammation effect of TGF-β, suggesting that PG inhibits RSV infection through inhibiting TGF-β signaling pathway.
Conclusions
PG attenuated RSV infection-induced oxidative stress and inflammation through inhibiting the TGF-β signaling pathway. This study provides evidence for the application of traditional Chinese herbal medicine in the treatment of viral infection.
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Availability of data and materials
The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
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QZ and QH made the majority contribution to the conception of this study, carried out all the experiments, and prepared the first draft of this manuscript. QH agreed with the final design of this work and revised this manuscript critically. SL performed cell culture and Western blot. All authors have read and approved the final manuscript.
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Qiong Zhang declares that she has no conflict of interest. Si Li declares that he has no conflict of interest. Qiong Huang declares that she has no conflict of interest.
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Ethical approval of this study was obtained from the Ethics Committee of Tongde Hospital of Zhejiang Province.
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13273_2021_200_MOESM1_ESM.tif
Supplementary fig 1 Effects of PG and TGF-β on markers of inflammation and oxidative stress in BEAS-2B cells. BEAS-2B cells were treated with 40 μM PG for 48 h. (a) ROS level, (b) SOD activity, (c) IL-6, and (d) TNF-α were detected with corresponding commercial kits. **p<0.01 and ***p<0.001 (TIF 362 KB)
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Zhang, Q., Li, S. & Huang, Q. Pratensein glycoside attenuates respiratory syncytial virus infection-induced oxidative and inflammatory injury via TGF-β signaling pathway. Mol. Cell. Toxicol. 18, 329–337 (2022). https://doi.org/10.1007/s13273-021-00200-2
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DOI: https://doi.org/10.1007/s13273-021-00200-2