Lipid nanoparticle-mediated mRNA/siRNA dual-bioengineered dendritic cell vaccines combined of PD-1/PD-L1 blockade for boosting tumor immunotherapy.

ABSTRACT: DC vaccines occupy a pivotal position in the realm of cancer treatment, leveraging the immune system to precisely target and effectively eliminate tumor cells. However, current challenges in tumor DC vaccine development include issues such as limited efficacy and potential upregulation of immunosuppressive molecules like PD-L1 on tumor cells. Herein, we employed microfluidic technology to fabricate lipid nanoparticles (LNPs) that simultaneously encapsulate OVA mRNA (mOVA), encoding the model antigen OVA, and siRNA targeting PD-L1. The LNP/mOVA/siPD-L1 nanoparticles were utilized to transfect bone marrow-derived dendritic cells (BMDCs) to construct dual-bioengineered DC vaccines. Subsequently, the efficacy of the dually bioengineered DC vaccines was verified in both prophylactic and therape

SUBMITTER: Yang D 

PROVIDER: S-EPMC12510061 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature