4.5 Article

Mechanism of protective effect of xuan-bai-cheng-qi decoction on LPS-induced acute lung injury based on an integrated network pharmacology and RNA-sequencing approach

Journal

RESPIRATORY RESEARCH
Volume 22, Issue 1, Pages -

Publisher

BMC
DOI: 10.1186/s12931-021-01781-1

Keywords

Xuan-bai-cheng-qi decoction; Acute lung injury; Network pharmacology; Gene sequencing; Mechanism

Funding

  1. Ministry of Science and Technology of China [2018YFC1704102]
  2. National Natural Science Foundation of China [81673855]
  3. Shanghai Municipal Commission of Health and Family Planning [(2018-2020)-CCCX-2001-01]
  4. Shanghai University of TCM [A1-Z193020109]
  5. Shanghai Municipal Health Committee [201740199]
  6. Shanghai Shuguang Hospital [SGXZ-201907]
  7. Shanghai Key Laboratory of Traditional Chinese Clinical Medicine [14DZ2273200]

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Xuan-bai-cheng-qi decoction (XCD) is a traditional Chinese medicine prescription used to treat respiratory diseases, particularly acute lung injury (ALI). Network pharmacology and RNA sequencing results suggest that XCD may protect against ALI by regulating the PI3K/mTOR/HIF-1 alpha/VEGF signaling pathway.
Xuan-bai-cheng-qi decoction (XCD), a traditional Chinese medicine (TCM) prescription, has been widely used to treat a variety of respiratory diseases in China, especially to seriously infectious diseases such as acute lung injury (ALI). Due to the complexity of the chemical constituent, however, the underlying pharmacological mechanism of action of XCD is still unclear. To explore its protective mechanism on ALI, firstly, a network pharmacology experiment was conducted to construct a component-target network of XCD, which identified 46 active components and 280 predicted target genes. Then, RNA sequencing (RNA-seq) was used to screen differentially expressed genes (DEGs) between ALI model rats treated with and without XCD and 753 DEGs were found. By overlapping the target genes identified using network pharmacology and DEGs using RNA-seq, and subsequent protein-protein interaction (PPI) network analysis, 6 kernel targets such as vascular epidermal growth factor (VEGF), mammalian target of rapamycin (mTOR), AKT1, hypoxia-inducible factor-1 alpha (HIF-1 alpha), and phosphoinositide 3-kinase (PI3K) and gene of phosphate and tension homology deleted on chromsome ten (PTEN) were screened out to be closely relevant to ALI treatment. Verification experiments in the LPS-induced ALI model rats showed that XCD could alleviate lung tissue pathological injury through attenuating proinflammatory cytokines release such as tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, and IL-1 beta. Meanwhile, both the mRNA and protein expression levels of PI3K, mTOR, HIF-1 alpha, and VEGF in the lung tissues were down-regulated with XCD treatment. Therefore, the regulations of XCD on PI3K/mTOR/HIF-1 alpha/VEGF signaling pathway was probably a crucial mechanism involved in the protective mechanism of XCD on ALI treatment.

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