Cordyceps Sinensis Reduces Inflammation and Protects BEAS-2B Cells From LPS-Induced THP-1 Cell Injury.

INTRODUCTION

Cordyceps sinensis, an entomogenous fungus with unique biological properties, has demonstrated significant anti-inflammatory potential. However, its effects on inflammation regulation need to be further investigated in detail.

METHODS

In this study, we aimed to analyze the Cordyceps sinensis extract (CSE) obtained via ethanol extraction and to assess its effects on inflammation regulation. The secretion of pro-inflammatory cytokines (IL-6, TNF-α, IL-8, and IL-1β) and the level of MMP9, Nrf2/HO-1 and ROS were evaluated. A transwell system with THP-1 and BEAS-2B cells was used to explore the inflammatory damage. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analyses were conducted on the differentially expressed genes.

RESULTS

CSE exhibited no cytotoxicity to THP-1 cells at concentrations ≤ 1.6 mg/mL. Treatment of LPS-induced THP-1 cells with CSE significantly inhibited the secretion of pro-inflammatory cytokines. CSE reduced inflammation-related protein MMP9, while upregulating the anti-inflammatory Nrf2/HO-1 signaling pathway. Fluorescence assays using DCF and JC-1 further confirmed that CSE help mitigate oxidative stress-induced inflammation. CSE treatment protected BEAS-2B cells from inflammatory damage. Moreover, the immune system process was a shared GO term between LPS-only treatment and combined LPS and CSE treatment. KEGG enrichment analysis showed that CSE is capable of regulating genes associated with inflammatory and anti-inflammatory responses.

CONCLUSION

These findings highlight the potential of CSE as an immune-regulating agent in functional foods and health products.