PMID- 32038656 OWN - NLM STAT- MEDLINE DCOM- 20210219 LR - 20210219 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 11 DP - 2020 TI - Synthetic Abortive HIV-1 RNAs Induce Potent Antiviral Immunity. PG - 8 LID - 10.3389/fimmu.2020.00008 [doi] LID - 8 AB - Strong innate and adaptive immune responses are paramount in combating viral infections. Dendritic cells (DCs) detect viral infections via cytosolic RIG-I like receptors (RLRs) RIG-I and MDA5 leading to MAVS-induced immunity. The DEAD-box RNA helicase DDX3 senses abortive human immunodeficiency virus 1 (HIV-1) transcripts and induces MAVS-dependent type I interferon (IFN) responses, suggesting that abortive HIV-1 RNA transcripts induce antiviral immunity. Little is known about the induction of antiviral immunity by DDX3-ligand abortive HIV-1 RNA. Here we synthesized a 58 nucleotide-long capped RNA (HIV-1 Cap-RNA(58)) that mimics abortive HIV-1 RNA transcripts. HIV-1 Cap-RNA(58) induced potent type I IFN responses in monocyte-derived DCs, monocytes, macrophages and primary CD1c(+) DCs. Compared with RLR agonist poly-I:C, HIV-1 Cap-RNA(58) induced comparable levels of type I IFN responses, identifying HIV-1 Cap-RNA(58) as a potent trigger of antiviral immunity. In monocyte-derived DCs, HIV-1 Cap-RNA(58) activated the transcription factors IRF3 and NF-kappaB. Moreover, HIV-1 Cap-RNA(58) induced DC maturation and the expression of pro-inflammatory cytokines. HIV-1 Cap-RNA(58)-stimulated DCs induced proliferation of CD4(+) and CD8(+) T cells and differentiated naive T helper (T(H)) cells toward a T(H)2 phenotype. Importantly, treatment of DCs with HIV-1 Cap-RNA(58) resulted in an efficient antiviral innate immune response that reduced ongoing HIV-1 replication in DCs. Our data strongly suggest that HIV-1 Cap-RNA(58) induces potent innate and adaptive immune responses, making it an interesting addition in vaccine design strategies. CI - Copyright (c) 2020 Stunnenberg, Sprokholt, van Hamme, Kaptein, Zijlstra-Willems, Gringhuis and Geijtenbeek. FAU - Stunnenberg, Melissa AU - Stunnenberg M AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - Sprokholt, Joris K AU - Sprokholt JK AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - van Hamme, John L AU - van Hamme JL AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - Kaptein, Tanja M AU - Kaptein TM AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - Zijlstra-Willems, Esther M AU - Zijlstra-Willems EM AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - Gringhuis, Sonja I AU - Gringhuis SI AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. FAU - Geijtenbeek, Teunis B H AU - Geijtenbeek TBH AD - Department of Experimental Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200123 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (IRF3 protein, human) RN - 0 (Interferon Regulatory Factor-3) RN - 0 (Interferon Type I) RN - 0 (NF-kappa B) RN - 0 (RNA, Viral) SB - IM MH - *Adaptive Immunity MH - Cell Differentiation/drug effects MH - Cell Proliferation/drug effects MH - Cells, Cultured MH - Dendritic Cells/immunology/virology MH - HIV Infections/*immunology/virology MH - HIV-1/*genetics MH - Host Microbial Interactions/*immunology MH - Humans MH - *Immunity, Innate MH - Interferon Regulatory Factor-3/metabolism MH - Interferon Type I/metabolism MH - Macrophages/immunology/virology MH - Monocytes/immunology/virology MH - NF-kappa B/metabolism MH - RNA, Viral/chemical synthesis/immunology/*pharmacology MH - Signal Transduction/drug effects MH - T-Lymphocytes/drug effects/immunology MH - Transcription, Genetic PMC - PMC6990453 OTO - NOTNLM OT - DDX3 OT - abortive HIV-1 RNA OT - antiviral immunity OT - dendritic cells OT - pattern recognition receptor OT - type I IFN OT - viral sensing EDAT- 2020/02/11 06:00 MHDA- 2021/02/20 06:00 PMCR- 2020/01/01 CRDT- 2020/02/11 06:00 PHST- 2019/08/02 00:00 [received] PHST- 2020/01/06 00:00 [accepted] PHST- 2020/02/11 06:00 [entrez] PHST- 2020/02/11 06:00 [pubmed] PHST- 2021/02/20 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2020.00008 [doi] PST - epublish SO - Front Immunol. 2020 Jan 23;11:8. doi: 10.3389/fimmu.2020.00008. eCollection 2020.