Abstract
Therapeutic mRNA vaccination is an attractive approach to trigger antitumor immunity. However, the mRNA delivery technology for customized tumor vaccine is still limited. In this work, bacteria-derived outer membrane vesicles (OMVs) are employed as an mRNA delivery platform by genetically engineering with surface decoration of RNA binding protein, L7Ae, and lysosomal escape protein, listeriolysin O (OMV-LL). OMV-LL can rapidly adsorb box C/D sequence-labelled mRNA antigens through L7Ae binding (OMV-LL-mRNA) and deliver them into dendritic cells (DCs), following by the cross-presentation via listeriolysin O-mediated endosomal escape. OMV-LL-mRNA significantly inhibits melanoma progression and elicits 37.5% complete regression in a colon cancer model. OMV-LL-mRNA induces a long-term immune memory and protects the mice from tumor challenge after 60 days. In summary, this platform provides a delivery technology distinct from lipid nanoparticles (LNPs) for personalized mRNA tumor vaccination, and with a “Plug-and-Display” strategy that enables its versatile application in mRNA vaccines.
Original language | English (US) |
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Article number | 2109984 |
Pages (from-to) | e2109984 |
Journal | Advanced Materials |
Volume | 34 |
Issue number | 20 |
DOIs | |
State | Published - May 19 2022 |
Keywords
- RNA binding protein
- box C/D
- cancer immunotherapy
- mRNA vaccines
- outer membrane vesicles
- rapid display
- Nanoparticles
- Animals
- Cancer Vaccines/genetics
- Bacteria
- Mice
- Liposomes
- RNA, Messenger
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Materials Science(all)