Delida Aidebaike , Hailong Gong , Yun Xia , Guoqing Jing , Huifan Liu , Huimin Zhou , Die Wu , Jing Zuo , Cheng Yang , Xing Wang , Yingyue Dong , Jie Yan , Xue Chen , Zihan Lei , Junjie Liang , Xiaojing Wu , Xuemin Song
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引用次数: 0
Abstract
Background
Sepsis-induced lung injury (SILI) is marked by excessive inflammation and apoptosis, posing considerable therapeutic problems owing to the scarcity of targeted therapy. Tanshinone IIA (TanIIA), a bioactive molecule extracted from Salvia miltiorrhiza, demonstrates potential in regulating inflammatory pathways and enhancing cellular resilience.
Purpose
This study comprehensively examined the therapeutic mechanisms of TanIIA in SILI by an integrated methodology that incorporates network pharmacology, molecular docking, and comprehensive experimental validation.
Methods
Network pharmacology and WGCNA analysis of GSE239388 revealed possible treatment targets for TanIIA. Computational analysis utilizing molecular docking techniques and molecular dynamics simulations validated a stable intermolecular connection between TanIIA and the vascular endothelial growth factor receptor 2.
TanIIA's therapeutic effectiveness was evaluated in vivo using septic mouse model. BEAS-2B cells treated with LPS in vitro were employed to elucidate the underlying mechanisms. Western blotting, qRT-PCR, immunohistochemistry, flow cytometry, and mitochondrial function assays were performed to evaluate gene expression, apoptosis, and mitochondrial functionality.
Results
VEGFR2 was identified as a critical therapeutic target of TanIIA in SILI. Treatment with TanIIA significantly enhanced survival rates, mitigated lung histopathological damage, and decreased levels of pro-inflammatory cytokines in CLP-induced septic mice. Mechanistically, TanIIA suppressed the VEGFR2-PI3K-AKT signaling pathway, preserving mitochondrial integrity and inhibiting apoptosis. Additional validation was obtained using LPS-treated BEAS-2B epithelial cells, reinforcing the initial findings.
Conclusion
TanIIA provides protective effects against SILI by specifically targeting VEGFR2 and inhibiting the PI3K/AKT signaling pathway, which helps maintain mitochondrial homeostasis and reduces apoptosis.
期刊介绍:
Phytomedicine is a therapy-oriented journal that publishes innovative studies on the efficacy, safety, quality, and mechanisms of action of specified plant extracts, phytopharmaceuticals, and their isolated constituents. This includes clinical, pharmacological, pharmacokinetic, and toxicological studies of herbal medicinal products, preparations, and purified compounds with defined and consistent quality, ensuring reproducible pharmacological activity. Founded in 1994, Phytomedicine aims to focus and stimulate research in this field and establish internationally accepted scientific standards for pharmacological studies, proof of clinical efficacy, and safety of phytomedicines.