Meloxicam-1-d-MT Dual-Drug Hydrogel Serves as an Immunomodulator to Reverse Tumor Postoperative Recurrence and Metastasis. (PubMed, ACS Appl Mater Interfaces)
Here, we design and construct an in situ injectable therapeutic hydrogel encapsulating 1-methyl-d-tryptophan (1-d-MT), a small-molecule competitive inhibitor of indoleamine 2,3-dioxygenase, and meloxicam, a selective inhibitor of cyclooxygenase-2 (Ge1MT/Mel hydrogel) to prevent postoperative tumor metastasis and relapse. Importantly, the Ge1MT/Mel hydrogel markedly stimulates a potent antitumor immune response in the cancer lesion microenvironment, increasing antitumor immune cells including CD8+ T cells, as well as elevating antitumor cytokines such as interferon-γ. Overall, combination immunotherapy via the Ge1MT/Mel hydrogel after surgery represents a promising strategy to minimize residual tumor burden and reduce recurrence risk following tumor resection.