The spreading of cancer cells from the primary tumor site to other parts of the body,known as metastasis,is the leading cause of cancer recurrence and mortality in patients with triple-negative breast cancer(TNBC).Ove...The spreading of cancer cells from the primary tumor site to other parts of the body,known as metastasis,is the leading cause of cancer recurrence and mortality in patients with triple-negative breast cancer(TNBC).Overexpression of epidermal growth factor receptor(EGFR)is observed in approximately 70%of TNBC patients.EGFR is crucial for promoting tumor metastasis and associated with poor prognosis.Therefore,it is vital to identify effective therapeutic strategies targeting EGFR inhibition.Ononin,an isoflavonoid found in various plants,such as clover and soybeans,has been shown to have anticancer properties in several cancers.In the present study,we aimed to investigate the effects of ononin on TNBC lung metastasis and the associated molecular pathways.We used various assays,including cell viability,colony formation,Transwell,wound healing,ELISA,Western blotting,and staining techniques,to achieve this objective.The results demonstrated that ononin effectively suppressed cellular proliferation and induced apoptosis,as evidenced by the cell viability assay,colony formation assay,and expression of apoptosis markers,and reduced the metastatic capabilities of TNBC cells.These effects were achieved through the direct suppression of cell adhesion,invasiveness and motility.Furthermore,in TNBC xenograft lung metastatic models,ononin treatment significantly reduced tumor growth and lung metastasis.Additionally,ononin reversed the epithelial-mesenchymal transition(EMT)by downregulating the expression of EMT markers and matrix metalloproteinases,as confirmed by Western blot analysis.Furthermore,ononin treatment reduced EGFR phosphorylation and suppressed the PI3K,Akt,and m TOR signaling pathways,which was further confirmed using EGFR agonists or inhibitors.Importantly,ononin treatment did not exert any toxic effects on liver or kidney function.In conclusion,our findings suggest that ononin is a safe and potentially therapeutic treatment for TNBC metastasis that targets the EGFRmediated PI3K/Akt/m TOR pathway.Further studies are warranted to validate its efficacy and explore its potential clinical applications.展开更多
基金supported by the Guangxi Science and Technology Key Research and Development Program(AB16450012)。
文摘The spreading of cancer cells from the primary tumor site to other parts of the body,known as metastasis,is the leading cause of cancer recurrence and mortality in patients with triple-negative breast cancer(TNBC).Overexpression of epidermal growth factor receptor(EGFR)is observed in approximately 70%of TNBC patients.EGFR is crucial for promoting tumor metastasis and associated with poor prognosis.Therefore,it is vital to identify effective therapeutic strategies targeting EGFR inhibition.Ononin,an isoflavonoid found in various plants,such as clover and soybeans,has been shown to have anticancer properties in several cancers.In the present study,we aimed to investigate the effects of ononin on TNBC lung metastasis and the associated molecular pathways.We used various assays,including cell viability,colony formation,Transwell,wound healing,ELISA,Western blotting,and staining techniques,to achieve this objective.The results demonstrated that ononin effectively suppressed cellular proliferation and induced apoptosis,as evidenced by the cell viability assay,colony formation assay,and expression of apoptosis markers,and reduced the metastatic capabilities of TNBC cells.These effects were achieved through the direct suppression of cell adhesion,invasiveness and motility.Furthermore,in TNBC xenograft lung metastatic models,ononin treatment significantly reduced tumor growth and lung metastasis.Additionally,ononin reversed the epithelial-mesenchymal transition(EMT)by downregulating the expression of EMT markers and matrix metalloproteinases,as confirmed by Western blot analysis.Furthermore,ononin treatment reduced EGFR phosphorylation and suppressed the PI3K,Akt,and m TOR signaling pathways,which was further confirmed using EGFR agonists or inhibitors.Importantly,ononin treatment did not exert any toxic effects on liver or kidney function.In conclusion,our findings suggest that ononin is a safe and potentially therapeutic treatment for TNBC metastasis that targets the EGFRmediated PI3K/Akt/m TOR pathway.Further studies are warranted to validate its efficacy and explore its potential clinical applications.