File:41541 2020 159 Fig1 HTML.webp
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Diagram of mRNA vaccine mechanism in host cell.
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[edit]Description41541 2020 159 Fig1 HTML.webp |
English: Non-replicating mRNA (NRM) constructs encode the coding sequence (CDS), and are flanked by 5′ and 3′ untranslated regions (UTRs), a 5′-cap structure and a 3′-poly-(A) tail. The self-amplifying mRNA (SAM) construct encodes additional replicase components able to direct intracellular mRNA amplification. (1) NRM and SAM are formulated in this illustration in lipid nanoparticles (LNPs) that encapsulate the mRNA constructs to protect them from degradation and promote cellular uptake. (2) Cellular uptake of the mRNA with its delivery system typically exploits membrane-derived endocytic pathways. (3) Endosomal escape allows release of the mRNA into the cytosol. (4) Cytosol-located NRM constructs are immediately translated by ribosomes to produce the protein of interest, which undergoes subsequent post-translational modification. (5) SAM constructs can also be immediately translated by ribosomes to produce the replicase machinery necessary for self-amplification of the mRNA. (6) Self-amplified mRNA constructs are translated by ribosomes to produce the protein of interest, which undergoes subsequent post-translational modification. (7) The expressed proteins of interest are generated as secreted, trans-membrane, or intracellular protein. (8) The innate and adaptive immune responses detect the protein of interest. |
Date | |
Source | Jackson, N.A.C., Kester, K.E., Casimiro, D. et al. The promise of mRNA vaccines: a biotech and industrial perspective. npj Vaccines 5, 11 (2020). https://doi.org/10.1038/s41541-020-0159-8 |
Author | Nicholas A. C. Jackson, Kent E. Kester, Danilo Casimiro, Sanjay Gurunathan, and Frank DeRosa |
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current | 08:16, 12 September 2021 | 1,893 × 923 (160 KB) | Guest2625 (talk | contribs) | Uploaded a work by Nicholas A. C. Jackson, Kent E. Kester, Danilo Casimiro, Sanjay Gurunathan, and Frank DeRosa from Jackson, N.A.C., Kester, K.E., Casimiro, D. et al. The promise of mRNA vaccines: a biotech and industrial perspective. npj Vaccines 5, 11 (2020). https://doi.org/10.1038/s41541-020-0159-8 with UploadWizard |
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