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Published in: BMC Pulmonary Medicine 1/2024

Open Access 01-12-2024 | Idiopathic Pulmonary Fibrosis | Research

Sinomenine attenuates pulmonary fibrosis by downregulating TGF-β1/Smad3, PI3K/Akt and NF-κB signaling pathways

Authors: Fuqiang Yao, Minghao Xu, Lingjun Dong, Xiao Shen, Yujie Shen, Yisheng Jiang, Ting Zhu, Chu Zhang, Guangmao Yu

Published in: BMC Pulmonary Medicine | Issue 1/2024

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Abstract

Background

Since COVID-19 became a global epidemic disease in 2019, pulmonary fibrosis (PF) has become more prevalent among persons with severe infections, with IPF being the most prevalent form. In traditional Chinese medicine, various disorders are treated using Sinomenine (SIN). The SIN’s strategy for PF defense is unclear.

Methods

Bleomycin (BLM) was used to induce PF, after which inflammatory factors, lung histological alterations, and the TGF-/Smad signaling pathway were assessed. By administering various dosages of SIN and the TGF- receptor inhibitor SB-431,542 to human embryonic lung fibroblasts (HFL-1) and A549 cells, we were able to examine proliferation and migration as well as the signaling molecules implicated in Epithelial-Mesenchymal Transition (EMT) and Extra-Cellular Matrix (ECM).

Results

In vivo, SIN reduced the pathological changes in the lung tissue induced by BLM, reduced the abnormal expression of inflammatory cytokines, and improved the weight and survival rate of mice. In vitro, SIN inhibited the migration and proliferation by inhibiting TGF-β1/Smad3, PI3K/Akt, and NF-κB pathways, prevented the myofibroblasts (FMT) of HFL-1, reversed the EMT of A549 cells, restored the balance of matrix metalloenzymes, and reduced the expression of ECM proteins.

Conclusion

SIN attenuated PF by down-regulating TGF-β/Smad3, PI3K/Akt, and NF-κB signaling pathways, being a potential effective drug in the treatment of PF.
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Metadata
Title
Sinomenine attenuates pulmonary fibrosis by downregulating TGF-β1/Smad3, PI3K/Akt and NF-κB signaling pathways
Authors
Fuqiang Yao
Minghao Xu
Lingjun Dong
Xiao Shen
Yujie Shen
Yisheng Jiang
Ting Zhu
Chu Zhang
Guangmao Yu
Publication date
01-12-2024
Publisher
BioMed Central
Published in
BMC Pulmonary Medicine / Issue 1/2024
Electronic ISSN: 1471-2466
DOI
https://doi.org/10.1186/s12890-024-03050-5

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