Yiyi Fuzi Baijiang powder exerts anti-ovarian cancer effects via the JNK/c-Jun signaling pathway and modulation of the tumor inflammatory microenvironment

OBJECTIVE: This study aimed to comprehensively investigate the anti-ovarian cancer (OC) efficacy of Yiyi Fuzi Baijiang Powder (YFBP), identify its key chemical constituents, and elucidate the underlying mechanisms of action. METHODS: The chemical profile of YFBP was characterized using UHPLC-MS/MS. The potential mechanisms were predicted through integrated network pharmacology and bioinformatics analyses. The anti-tumor effects were validated in SK-OV-3 cells and a xenograft mouse model by performing CCK-8, flow cytometry, and TUNEL assays. The effects on the tumor inflammatory microenvironment and the JNK/c-Jun signaling pathway were assessed by ELISA, Western blotting, and qRT-PCR. RESULTS: UHPLC-MS/MS analysis identified 271 chemical constituents in YFBP. In vivo, YFBP significantly suppressed tumor growth (inhibition rate up to 52.4%) without systemic toxicity. It inhibited cell proliferation, induced apoptosis, and arrested the cell cycle in the S-phase. Mechanistically, YFBP ameliorated the inflammatory tumor microenvironment (TME) by reducing pro-inflammatory cytokine levels (TNF-α, IL-6, IL-1β) and concurrently activated the JNK/c-Jun signaling pathway. Rescue experiments confirmed that the JNK inhibitor SP600125 attenuated the anti-proliferative effects of YFBP. CONCLUSION: This study demonstrates that YFBP exerts significant anti-OC therapeutic effects by modulating the inflammatory TME and activating the JNK/c-Jun pathway. Our findings provide a pharmacological basis for the traditional use of YFBP and highlight its potential as a promising candidate phytomedicine for OC therapy.