PMID- 34220803 OWN - NLM STAT- MEDLINE DCOM- 20211028 LR - 20211028 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 12 DP - 2021 TI - Japanese Encephalitis Virus Infected Human Monocyte-Derived Dendritic Cells Activate a Transcriptional Network Leading to an Antiviral Inflammatory Response. PG - 638694 LID - 10.3389/fimmu.2021.638694 [doi] LID - 638694 AB - A comprehensive understanding of the human immune response to virus infection is imperative for developing effective therapies, antivirals, and vaccines. Dendritic cells (DCs) are among the first cells to encounter the virus and are also key antigen-presenting cells that link the innate and adaptive immune system. In this study, we focus on the human immune response to the mosquito-borne Japanese encephalitis virus (JEV), which is the leading cause of virus-induced encephalitis in south-east Asia and has the potential to become a global pathogen. We describe the gene regulatory circuit of JEV infection in human monocyte-derived DCs (moDCs) along with its functional validation. We observe that JEV can productively infect human moDCs leading to robust transcriptional activation of the interferon and NF-kappaB-mediated antiviral and inflammatory pathways. This is accompanied with DC maturation and release of pro-inflammatory cytokines and chemokines TNFalpha, IL-6, IL-8, IL-12, MCP-1. and RANTES. JEV-infected moDCs activated T-regulatory cells (Tregs) in allogenic mixed lymphocyte reactions (MLR) as seen by upregulated FOXP3 mRNA expression, suggestive of a host response to reduce virus-induced immunopathology. The virus also downregulated transcripts involved in Peroxisome Proliferator Activated Receptor (PPAR) signalling and fatty acid metabolism pathways suggesting that changes in cellular metabolism play a crucial role in driving the DC maturation and antiviral responses. Collectively, our data describe and corroborate the human DC transcriptional network that is engaged upon JEV sensing. CI - Copyright (c) 2021 Chauhan, Rathore, Sachan, Lacroix-Desmazes, Gupta, Awasthi, Vrati and Kalia. FAU - Chauhan, Shailendra AU - Chauhan S AD - Translational Health Science & Technology Institute, Faridabad, India. FAU - Rathore, Deepak Kumar AU - Rathore DK AD - Translational Health Science & Technology Institute, Faridabad, India. FAU - Sachan, Shilpa AU - Sachan S AD - Vaccine Immunology Laboratory, National Institute of Immunology, New Delhi, India. FAU - Lacroix-Desmazes, Sebastien AU - Lacroix-Desmazes S AD - Institut National de la Sante et de la Recherche Medicale, Centre de Recherche des Cordeliers, Sorbonne Universite, Universite de Paris, Paris, France. FAU - Gupta, Nimesh AU - Gupta N AD - Vaccine Immunology Laboratory, National Institute of Immunology, New Delhi, India. FAU - Awasthi, Amit AU - Awasthi A AD - Translational Health Science & Technology Institute, Faridabad, India. FAU - Vrati, Sudhanshu AU - Vrati S AD - Translational Health Science & Technology Institute, Faridabad, India. AD - Regional Centre for Biotechnology, Faridabad, India. FAU - Kalia, Manjula AU - Kalia M AD - Translational Health Science & Technology Institute, Faridabad, India. AD - Regional Centre for Biotechnology, Faridabad, India. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210617 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Antiviral Agents) RN - 0 (FOXP3 protein, human) RN - 0 (Forkhead Transcription Factors) RN - 0 (Inflammation Mediators) RN - 0 (NF-kappa B) RN - 0 (Peroxisome Proliferator-Activated Receptors) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Antiviral Agents MH - Cells, Cultured MH - Dendritic Cells/*immunology MH - Encephalitis Virus, Japanese/*physiology MH - Encephalitis, Japanese/*immunology MH - Forkhead Transcription Factors/metabolism MH - Gene Regulatory Networks MH - Humans MH - Immunity MH - Inflammation/*immunology MH - Inflammation Mediators MH - Interferon-gamma/genetics/metabolism MH - Lipid Metabolism MH - Monocytes/*immunology MH - NF-kappa B/genetics/metabolism MH - Peroxisome Proliferator-Activated Receptors/metabolism MH - T-Lymphocytes, Regulatory/*immunology PMC - PMC8247639 OTO - NOTNLM OT - Japanese encephalitis virus OT - NF-kappaB OT - PPAR OT - Tregs OT - flavivirus OT - innate immune response OT - lipid metabolism OT - monocyte-derived dendritic cell COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/07/06 06:00 MHDA- 2021/10/29 06:00 PMCR- 2021/06/17 CRDT- 2021/07/05 10:00 PHST- 2020/12/07 00:00 [received] PHST- 2021/05/04 00:00 [accepted] PHST- 2021/07/05 10:00 [entrez] PHST- 2021/07/06 06:00 [pubmed] PHST- 2021/10/29 06:00 [medline] PHST- 2021/06/17 00:00 [pmc-release] AID - 10.3389/fimmu.2021.638694 [doi] PST - epublish SO - Front Immunol. 2021 Jun 17;12:638694. doi: 10.3389/fimmu.2021.638694. eCollection 2021.