MnUA-DOX-artesunate hydrogel remodels immunosuppressive tumor microenvironment and prevents postoperative recurrence in triple-negative breast cancer. (PubMed, J Nanobiotechnology)
In this study, we developed an injectable multifunctional hydrogel, MND-ART-GEL, by encapsulating immunostimulatory manganese urate (MnUA), the chemotherapeutic agent doxorubicin (DOX), and an artemisinin derivative, artesunate (ART), within a thermosensitive Pluronic F127 matrix...In orthotopic and postsurgical TNBC mouse models, MND-ART-GEL significantly inhibited tumor growth and recurrence, remodeled the immunosuppressive tumor microenvironment, enhanced CD8+ T-cell infiltration, dendritic cell maturation, and M1 macrophage polarization, reduced PD-1/PD-L1 expression on CD8+ T cells, and promoted the secretion of immune-related cytokines. This study presents a localized drug delivery strategy that integrates chemotherapy, immune modulation, and multitarget synergy, offering a promising approach to overcome therapeutic resistance and reduce recurrence in TNBC.