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Updated: Jan 31, 2026

Isolation And Dendritic Cell-Uptake of Small Extracellular Vesicles from Echinococcus granulosus
Published on: March 28, 2025
Dendritic Cell Membrane Vesicles for Activation and Maintenance of Antigen-Specific T Cells
Lukasz J Ochyl1, James J Moon1,2
1Department of Pharmaceutical Sciences, University of Michigan, Biointerfaces Institute, University of Michigan, 2800 Plymouth Drive, Ann Arbor, MI, 48109, USA.
Abstract:
Cell membranes have recently gained attention as a promising drug delivery system. Here, dendritic cell membrane vesicles (DC-MVs) are examined as a platform to promote T cell responses. Nanosized DC-MVs are derived from DCs pretreated with monophosphoryl lipid A (MPLA), a FDA-approved immunostimulatory adjuvant. These "mature" DC-MVs activate DCs in vitro and increase their expression of costimulatory markers. DC-MVs also promote cross-priming of antigen-specific T cells in vitro, increasing their survival and CD25 expression. In addition, these mature DC-MVs potently augment the expansion of adoptively transferred CD8+ T cells in vivo, generating twofold to fourfold higher frequency of antigen-specific T cells, compared with other control formulations, including "immature" DC-MVs obtained without the MPLA pretreatment. Taken together, these results suggest that DC-MVs are an effective delivery platform for T cell activation and may serve as a potential delivery system for improving adoptive T cell therapy.
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