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Nanoparticle 'Super-Adjuvant' Vaccine Prevents Multiple Cancers and Metastasis in Mice

A lipid platform co-delivers STING plus TLR4 agonists to trigger durable tumor-specific T-cell memory.

Overview

  • University of Massachusetts Amherst researchers report tumor rejection rates of 88% in pancreatic, 75% in triple-negative breast, and 69% in melanoma mouse models.
  • In a peptide-based melanoma experiment, 80% of vaccinated mice stayed tumor-free for 250 days, whereas all control animals developed tumors and died by day 35.
  • Vaccinated, tumor-free mice resisted systemic metastatic challenge, with no lung tumors detected in the tests.
  • The nanoparticles co-encapsulate two incompatible adjuvants in a single lipid carrier that drains to lymph nodes and drives strong innate activation and antigen presentation.
  • Results remain preclinical and unproven in humans; the study was published Oct. 9 in Cell Reports Medicine as the team launches NanoVax Therapeutics to advance translation.