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This study investigates whether mRNA vaccines can promote anti-tumor effects without requiring specific tumor antigens.

mRNA Vaccines Enhance Tumor Control and Synergize with 4-1BB Costimulatory Therapy 2309043

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This study investigates whether mRNA vaccines can promote anti-tumor effects without requiring specific tumor antigens.
C57BL/6 mice were immunized with an mRNA-LNP vaccine encoding ovalbumin.
Mice were challenged with melanoma cells prior to vaccination.
4-1BB agonistic antibodies were administered to assess their effect on vaccine efficacy.
mRNA-OVA vaccination led to significant tumor control in mice, even without tumor-specific antigens.
Stronger CD8 T cell responses correlated with better tumor control outcomes.
Combining mRNA vaccination with anti-4-1BB antibodies enhanced the anti-tumoral effects without toxicity.

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Randomized trial demonstrates enhanced tumor control in mice using mRNA vaccines with 4-1BB costimulation, suggesting a new therapy method.

Dangi et al. (2026) studied this question.

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Randomized trial demonstrates enhanced tumor control in mice using mRNA vaccines with 4-1BB costimulation, suggesting a new therapy method.