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- W3089495849 endingPage "120431" @default.
- W3089495849 startingPage "120431" @default.
- W3089495849 abstract "Synthetic mRNA represents an exciting cancer vaccine technology for the implementation of effective cancer immunotherapy. However, inefficient in vivo mRNA delivery along with a requirement for immune co-stimulation present major hurdles to achieving anti-tumor therapeutic efficacy. Here, we demonstrate a proof-of-concept adjuvant-pulsed mRNA vaccine nanoparticle (NP) that is composed of an ovalbumin-coded mRNA and a palmitic acid-modified TLR7/8 agonist R848 (C16-R848), coated with a lipid-polyethylene glycol (lipid-PEG) shell. This mRNA vaccine NP formulation retained the adjuvant activity of encapsulated C16-R848 and markedly improved the transfection efficacy of the mRNA (>95%) and subsequent MHC class I presentation of OVA mRNA derived antigen in antigen-presenting cells. The C16-R848 adjuvant-pulsed mRNA vaccine NP approach induced an effective adaptive immune response by significantly improving the expansion of OVA-specific CD8+ T cells and infiltration of these cells into the tumor bed in vivo, relative to the mRNA vaccine NP without adjuvant. The approach led to an effective anti-tumor immunity against OVA expressing syngeneic allograft mouse models of lymphoma and prostate cancer, resulting in a significant prevention of tumor growth when the vaccine was given before tumor engraftment (84% reduction vs. control) and suppression of tumor growth when given post engraftment (60% reduction vs. control). Our findings indicate that C16-R848 adjuvant pulsation to mRNA vaccine NP is a rational design strategy to increase the effectiveness of synthetic mRNA vaccines for cancer immunotherapy." @default.
- W3089495849 created "2020-10-08" @default.
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- W3089495849 date "2021-01-01" @default.
- W3089495849 modified "2023-10-09" @default.
- W3089495849 title "Adjuvant-pulsed mRNA vaccine nanoparticle for immunoprophylactic and therapeutic tumor suppression in mice" @default.
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- W3089495849 doi "https://doi.org/10.1016/j.biomaterials.2020.120431" @default.
- W3089495849 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7528902" @default.
- W3089495849 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33099060" @default.
- W3089495849 hasPublicationYear "2021" @default.