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Strategies for controlling the innate immune activity of conventional and self-amplifying mRNA therapeutics : getting the message across

An-Katrien Minnaert (UGent) , Helena Vanluchene (UGent) , Rein Verbeke (UGent) , Ine Lentacker (UGent) , Stefaan De Smedt (UGent) , Koen Raemdonck (UGent) , Niek Sanders (UGent) and Katrien Remaut (UGent)
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Abstract
The recent approval of messenger RNA (mRNA)-based vaccines to combat the SARS-CoV-2 pandemic highlights the potential of both conventional mRNA and self-amplifying mRNA (saRNA) as a flexible immunotherapy platform to treat infectious diseases. Besides the antigen it encodes, mRNA itself has an immune-stimulating activity that can contribute to vaccine efficacy. This self-adjuvant effect, how-ever, will interfere with mRNA translation and may influence the desired therapeutic outcome. To further exploit its potential as a versatile therapeutic platform, it will be crucial to control mRNA's innate immune-stimulating properties. In this regard, we describe the mechanisms behind the innate immune recognition of mRNA and provide an extensive overview of strategies to control its innate immune-stimulating activity. These strategies range from modifications to the mRNA backbone itself, optimization of production and purification processes to the combination with innate immune inhibitors. Furthermore, we discuss the delicate balance of the self-adjuvant effect in mRNA vaccination strategies, which can be both beneficial and detrimental to the therapeutic outcome.
Keywords
mRNA, Self-amplifying mRNA (saRNA), Innate immune stimulation, Type I IFNs, Immune evasion strategies, mRNA vaccination, PERFORMANCE LIQUID-CHROMATOGRAPHY, DEPENDENT PROTEIN-KINASE, NF-KAPPA-B, DENDRITIC CELLS, IN-VITRO, STRANDED-RNA, NUCLEOSIDE MODIFICATIONS, SINDBIS VIRUS, NONCYTOPATHIC REPLICATION, ANTIGEN AVAILABILITY

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MLA
Minnaert, An-Katrien, et al. “Strategies for Controlling the Innate Immune Activity of Conventional and Self-Amplifying MRNA Therapeutics : Getting the Message Across.” ADVANCED DRUG DELIVERY REVIEWS, edited by An-Katrien Minnaert, vol. 176, 2021, doi:10.1016/j.addr.2021.113900.
APA
Minnaert, A.-K., Vanluchene, H., Verbeke, R., Lentacker, I., De Smedt, S., Raemdonck, K., … Remaut, K. (2021). Strategies for controlling the innate immune activity of conventional and self-amplifying mRNA therapeutics : getting the message across. ADVANCED DRUG DELIVERY REVIEWS, 176. https://doi.org/10.1016/j.addr.2021.113900
Chicago author-date
Minnaert, An-Katrien, Helena Vanluchene, Rein Verbeke, Ine Lentacker, Stefaan De Smedt, Koen Raemdonck, Niek Sanders, and Katrien Remaut. 2021. “Strategies for Controlling the Innate Immune Activity of Conventional and Self-Amplifying MRNA Therapeutics : Getting the Message Across.” Edited by An-Katrien Minnaert. ADVANCED DRUG DELIVERY REVIEWS 176. https://doi.org/10.1016/j.addr.2021.113900.
Chicago author-date (all authors)
Minnaert, An-Katrien, Helena Vanluchene, Rein Verbeke, Ine Lentacker, Stefaan De Smedt, Koen Raemdonck, Niek Sanders, and Katrien Remaut. 2021. “Strategies for Controlling the Innate Immune Activity of Conventional and Self-Amplifying MRNA Therapeutics : Getting the Message Across.” Ed by. An-Katrien Minnaert. ADVANCED DRUG DELIVERY REVIEWS 176. doi:10.1016/j.addr.2021.113900.
Vancouver
1.
Minnaert A-K, Vanluchene H, Verbeke R, Lentacker I, De Smedt S, Raemdonck K, et al. Strategies for controlling the innate immune activity of conventional and self-amplifying mRNA therapeutics : getting the message across. Minnaert A-K, editor. ADVANCED DRUG DELIVERY REVIEWS. 2021;176.
IEEE
[1]
A.-K. Minnaert et al., “Strategies for controlling the innate immune activity of conventional and self-amplifying mRNA therapeutics : getting the message across,” ADVANCED DRUG DELIVERY REVIEWS, vol. 176, 2021.
@article{8739558,
  abstract     = {{The recent approval of messenger RNA (mRNA)-based vaccines to combat the SARS-CoV-2 pandemic highlights the potential of both conventional mRNA and self-amplifying mRNA (saRNA) as a flexible immunotherapy platform to treat infectious diseases. Besides the antigen it encodes, mRNA itself has an immune-stimulating activity that can contribute to vaccine efficacy. This self-adjuvant effect, how-ever, will interfere with mRNA translation and may influence the desired therapeutic outcome. To further exploit its potential as a versatile therapeutic platform, it will be crucial to control mRNA's innate immune-stimulating properties. In this regard, we describe the mechanisms behind the innate immune recognition of mRNA and provide an extensive overview of strategies to control its innate immune-stimulating activity. These strategies range from modifications to the mRNA backbone itself, optimization of production and purification processes to the combination with innate immune inhibitors. Furthermore, we discuss the delicate balance of the self-adjuvant effect in mRNA vaccination strategies, which can be both beneficial and detrimental to the therapeutic outcome.}},
  articleno    = {{113900}},
  author       = {{Minnaert, An-Katrien and Vanluchene, Helena and Verbeke, Rein and Lentacker, Ine and De Smedt, Stefaan and Raemdonck, Koen and Sanders, Niek and Remaut, Katrien}},
  editor       = {{Minnaert, An-Katrien}},
  issn         = {{0169-409X}},
  journal      = {{ADVANCED DRUG DELIVERY REVIEWS}},
  keywords     = {{mRNA,Self-amplifying mRNA (saRNA),Innate immune stimulation,Type I IFNs,Immune evasion strategies,mRNA vaccination,PERFORMANCE LIQUID-CHROMATOGRAPHY,DEPENDENT PROTEIN-KINASE,NF-KAPPA-B,DENDRITIC CELLS,IN-VITRO,STRANDED-RNA,NUCLEOSIDE MODIFICATIONS,SINDBIS VIRUS,NONCYTOPATHIC REPLICATION,ANTIGEN AVAILABILITY}},
  language     = {{eng}},
  pages        = {{22}},
  title        = {{Strategies for controlling the innate immune activity of conventional and self-amplifying mRNA therapeutics : getting the message across}},
  url          = {{http://doi.org/10.1016/j.addr.2021.113900}},
  volume       = {{176}},
  year         = {{2021}},
}

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