PD-L1 Aptamer–Functionalized Mesoporous Silica Nanoparticles for Targeted Doxorubicin Delivery in Triple-Negative Breast Cancer
Background Triple-negative breast cancer (TNBC) remains highly aggressive and lacks effective molecularly targeted therapies. Programmed death-ligand 1 (PD-L1) represents a potential cell-surface target for selective drug delivery. Objective To develop and evaluate a PD-L1 aptamer–functionalized mesoporous silica nanop...