1
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Dogra T, Pelz L, Boehme JD, Kuechler J, Kershaw O, Marichal-Gallardo P, Baelkner M, Hein MD, Gruber AD, Benndorf D, Genzel Y, Bruder D, Kupke SY, Reichl U. Generation of "OP7 chimera" defective interfering influenza A particle preparations free of infectious virus that show antiviral efficacy in mice. Sci Rep 2023; 13:20936. [PMID: 38017026 PMCID: PMC10684881 DOI: 10.1038/s41598-023-47547-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/15/2023] [Indexed: 11/30/2023] Open
Abstract
Influenza A virus (IAV) defective interfering particles (DIPs) are considered as new promising antiviral agents. Conventional DIPs (cDIPs) contain a deletion in the genome and can only replicate upon co-infection with infectious standard virus (STV), during which they suppress STV replication. We previously discovered a new type of IAV DIP "OP7" that entails genomic point mutations and displays higher antiviral efficacy than cDIPs. To avoid safety concerns for the medical use of OP7 preparations, we developed a production system that does not depend on infectious IAV. We reconstituted a mixture of DIPs consisting of cDIPs and OP7 chimera DIPs, in which both harbor a deletion in their genome. To complement the defect, the deleted viral protein is expressed by the suspension cell line used for production in shake flasks. Here, DIP preparations harvested are not contaminated with infectious virions, and the fraction of OP7 chimera DIPs depended on the multiplicity of infection. Intranasal administration of OP7 chimera DIP material was well tolerated in mice. A rescue from an otherwise lethal IAV infection and no signs of disease upon OP7 chimera DIP co-infection demonstrated the remarkable antiviral efficacy. The clinical development of this new class of broad-spectrum antiviral may contribute to pandemic preparedness.
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Affiliation(s)
- Tanya Dogra
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Lars Pelz
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Julia D Boehme
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Jan Kuechler
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Olivia Kershaw
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Pavel Marichal-Gallardo
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Maike Baelkner
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Marc D Hein
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
| | - Achim D Gruber
- Department of Veterinary Pathology, Freie Universität Berlin, Berlin, Germany
| | - Dirk Benndorf
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
| | - Yvonne Genzel
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
| | - Dunja Bruder
- Institute of Medical Microbiology, Infection Prevention and Control, Infection Immunology Group, Health Campus Immunology, Infectiology and Inflammation, Otto Von Guericke University Magdeburg, Magdeburg, Germany
- Immune Regulation Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Sascha Y Kupke
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany.
| | - Udo Reichl
- Max Planck Institute for Dynamics of Complex Technical Systems, Bioprocess Engineering, Magdeburg, Germany
- Bioprocess Engineering, Otto Von Guericke University Magdeburg, Magdeburg, Germany
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2
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Pelz L, Piagnani E, Marsall P, Wynserski N, Hein MD, Marichal-Gallardo P, Kupke SY, Reichl U. Broad-Spectrum Antiviral Activity of Influenza A Defective Interfering Particles against Respiratory Syncytial, Yellow Fever, and Zika Virus Replication In Vitro. Viruses 2023; 15:1872. [PMID: 37766278 PMCID: PMC10537524 DOI: 10.3390/v15091872] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 08/25/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
New broadly acting and readily available antiviral agents are needed to combat existing and emerging viruses. Defective interfering particles (DIPs) of influenza A virus (IAV) are regarded as promising options for the prevention and treatment of IAV infections. Interestingly, IAV DIPs also inhibit unrelated viral infections by stimulating antiviral innate immunity. Here, we tested the ability of IAV DIPs to suppress respiratory syncytial, yellow fever and Zika virus infections in vitro. In human lung (A549) cells, IAV DIP co-infection inhibited the replication and spread of all three viruses. In contrast, we observed no antiviral activity in Vero cells, which are deficient in the production of interferon (IFN), demonstrating its importance for the antiviral effect. Further, in A549 cells, we observed an enhanced type-I and type-III IFN response upon co-infection that appears to explain the antiviral potential of IAV DIPs. Finally, a lack of antiviral activity in the presence of the Janus kinase 1/2 (JAK1/2) inhibitor ruxolitinib was detected. This revealed a dependency of the antiviral activity on the JAK/signal transducers and activators of transcription (STAT) signaling pathway. Overall, this study supports the notion that IAV DIPs may be used as broad-spectrum antivirals to treat infections with a variety of IFN-sensitive viruses, particularly respiratory viruses.
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Affiliation(s)
- Lars Pelz
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Elena Piagnani
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Patrick Marsall
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Nancy Wynserski
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Marc Dominique Hein
- Bioprocess Engineering, Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
| | - Pavel Marichal-Gallardo
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Sascha Young Kupke
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
| | - Udo Reichl
- Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, 39106 Magdeburg, Germany
- Bioprocess Engineering, Otto von Guericke University Magdeburg, 39106 Magdeburg, Germany
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3
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Lin MH, Li D, Tang B, Li L, Suhrbier A, Harrich D. Defective Interfering Particles with Broad-Acting Antiviral Activity for Dengue, Zika, Yellow Fever, Respiratory Syncytial and SARS-CoV-2 Virus Infection. Microbiol Spectr 2022; 10:e0394922. [PMID: 36445148 PMCID: PMC9769664 DOI: 10.1128/spectrum.03949-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/09/2022] [Indexed: 12/03/2022] Open
Abstract
More than 100 arboviruses, almost all of which have an RNA genome, cause disease in humans. RNA viruses are causing unprecedented health system challenges worldwide, many with little or no specific therapies or vaccines available. Certain species of mosquito can carry dengue virus (DENV), Zika virus (ZIKV) and yellow fever virus (YFV), where co-infection of these viruses has occurred. Here, we found that purified synthetic defective interfering particles (DIPs) derived from DENV type 2 (DENV-2) strongly suppressed replication of the aforementioned viruses, respiratory syncytial virus (RSV) and also the novel emerging virus SARS-CoV-2 in human cells. DENV DIPs produced in bioreactors, purified by column chromatography, and concentrated are virus-like particles that are about half the diameter of a typical DENV particle, but with similar ratios of the viral structural proteins envelope and capsid. Overall, DIP-treated cells inhibited DENV, ZIKV, YFV, RSV, and SARS-CoV-2 by at least 98% by mechanisms which included interferon (IFN)-dependent cellular antiviral responses. IMPORTANCE DIPs are spontaneously derived virus mutants with deletions in genes that block viral replication. DIPs play important roles in modulation of viral disease, innate immune responses, virus persistence and virus evolution. Here, we investigated the antiviral activity of highly purified synthetic DIPs derived from DENV, which were produced in bioreactors. DENV DIPs purified by column chromatography strongly inhibited five different RNA viruses, including DENV, ZIKV, YFV, RSV, and SARS-CoV-2 in human cells. DENV DIPs inhibited virus replication via delivery of a small, noninfectious viral RNA that activated cellular innate immunity, resulting in robust type 1 interferon responses. The work here presents a pathway for DIP production which is adaptable to Good Manufacturing Practice, so that their preclinical testing should be suitable for evaluation in subjects.
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Affiliation(s)
- Min-Hsuan Lin
- Program of Infection and Inflammation, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Dongsheng Li
- Program of Infection and Inflammation, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Bing Tang
- Program of Infection and Inflammation, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Li Li
- Australian Institute for Bioengineering and Nanotechnology, the University of Queensland, St. Lucia, Queensland, Australia
| | - Andreas Suhrbier
- Program of Infection and Inflammation, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, Brisbane, Queensland, Australia
| | - David Harrich
- Program of Infection and Inflammation, QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- Australian Infectious Disease Research Centre, GVN Center of Excellence, Brisbane, Queensland, Australia
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4
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Singh K, Martinez MG, Lin J, Gregory J, Nguyen TU, Abdelaal R, Kang K, Brennand K, Grünweller A, Ouyang Z, Phatnani H, Kielian M, Wendel HG. Transcriptional and Translational Dynamics of Zika and Dengue Virus Infection. Viruses 2022; 14:1418. [PMID: 35891396 PMCID: PMC9316442 DOI: 10.3390/v14071418] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 06/18/2022] [Indexed: 11/16/2022] Open
Abstract
Zika virus (ZIKV) and dengue virus (DENV) are members of the Flaviviridae family of RNA viruses and cause severe disease in humans. ZIKV and DENV share over 90% of their genome sequences, however, the clinical features of Zika and dengue infections are very different reflecting tropism and cellular effects. Here, we used simultaneous RNA sequencing and ribosome footprinting to define the transcriptional and translational dynamics of ZIKV and DENV infection in human neuronal progenitor cells (hNPCs). The gene expression data showed induction of aminoacyl tRNA synthetases (ARS) and the translation activating PIM1 kinase, indicating an increase in RNA translation capacity. The data also reveal activation of different cell stress responses, with ZIKV triggering a BACH1/2 redox program, and DENV activating the ATF/CHOP endoplasmic reticulum (ER) stress program. The RNA translation data highlight activation of polyamine metabolism through changes in key enzymes and their regulators. This pathway is needed for eIF5A hypusination and has been implicated in viral translation and replication. Concerning the viral RNA genomes, ribosome occupancy readily identified highly translated open reading frames and a novel upstream ORF (uORF) in the DENV genome. Together, our data highlight both the cellular stress response and the activation of RNA translation and polyamine metabolism during DENV and ZIKV infection.
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Affiliation(s)
- Kamini Singh
- Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA;
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Albert Einstein Cancer, Center, Bronx, NY 10461, USA;
| | - Maria Guadalupe Martinez
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.G.M.); (R.A.); (M.K.)
- Global Innovation, Boehringer Ingelheim Animal Health, 69800 Saint-Priest, France
| | - Jianan Lin
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032 and Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA;
| | - James Gregory
- Department of Neurology, Vagelos College of Physicians & Surgeons of Columbia University, New York, NY 10032, USA; (J.G.); (K.K.); (H.P.)
- Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY 10013, USA
| | - Trang Uyen Nguyen
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Albert Einstein Cancer, Center, Bronx, NY 10461, USA;
| | - Rawan Abdelaal
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.G.M.); (R.A.); (M.K.)
| | - Kristy Kang
- Department of Neurology, Vagelos College of Physicians & Surgeons of Columbia University, New York, NY 10032, USA; (J.G.); (K.K.); (H.P.)
- Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY 10013, USA
| | - Kristen Brennand
- Division of Molecular Psychiatry, Departments of Psychiatry and Genetics, Yale School of Medicine, New Haven, CT 06510, USA;
| | - Arnold Grünweller
- Institute of Pharmaceutical Chemistry, Philipps University Marburg, 35032 Marburg, Germany;
| | - Zhengqing Ouyang
- Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts, Amherst, MA 01003, USA;
| | - Hemali Phatnani
- Department of Neurology, Vagelos College of Physicians & Surgeons of Columbia University, New York, NY 10032, USA; (J.G.); (K.K.); (H.P.)
- Center for Genomics of Neurodegenerative Disease, New York Genome Center, New York, NY 10013, USA
| | - Margaret Kielian
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; (M.G.M.); (R.A.); (M.K.)
| | - Hans-Guido Wendel
- Cancer Biology and Genetics Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA;
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5
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Bhat T, Cao A, Yin J. Virus-like Particles: Measures and Biological Functions. Viruses 2022; 14:383. [PMID: 35215979 PMCID: PMC8877645 DOI: 10.3390/v14020383] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/10/2022] [Accepted: 02/10/2022] [Indexed: 12/25/2022] Open
Abstract
Virus-like particles resemble infectious virus particles in size, shape, and molecular composition; however, they fail to productively infect host cells. Historically, the presence of virus-like particles has been inferred from total particle counts by microscopy, and infectious particle counts or plaque-forming-units (PFUs) by plaque assay; the resulting ratio of particles-to-PFUs is often greater than one, easily 10 or 100, indicating that most particles are non-infectious. Despite their inability to hijack cells for their reproduction, virus-like particles and the defective genomes they carry can exhibit a broad range of behaviors: interference with normal virus growth during co-infections, cell killing, and activation or inhibition of innate immune signaling. In addition, some virus-like particles become productive as their multiplicities of infection increase, a sign of cooperation between particles. Here, we review established and emerging methods to count virus-like particles and characterize their biological functions. We take a critical look at evidence for defective interfering virus genomes in natural and clinical isolates, and we review their potential as antiviral therapeutics. In short, we highlight an urgent need to better understand how virus-like genomes and particles interact with intact functional viruses during co-infection of their hosts, and their impacts on the transmission, severity, and persistence of virus-associated diseases.
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Affiliation(s)
| | | | - John Yin
- Department of Chemical and Biological Engineering, Wisconsin Institute for Discovery, University of Wisconsin-Madison, 330 N. Orchard Street, Madison, WI 53715, USA; (T.B.); (A.C.)
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6
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Wang S, Chan KWK, Tan MJA, Flory C, Luo D, Lescar J, Forwood JK, Vasudevan SG. A conserved arginine in NS5 binds genomic 3' stem-loop RNA for primer-independent initiation of flavivirus RNA replication. RNA (NEW YORK, N.Y.) 2022; 28:177-193. [PMID: 34759006 PMCID: PMC8906541 DOI: 10.1261/rna.078949.121] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
The commitment to replicate the RNA genome of flaviviruses without a primer involves RNA-protein interactions that have been shown to include the recognition of the stem-loop A (SLA) in the 5' untranslated region (UTR) by the nonstructural protein NS5. We show that DENV2 NS5 arginine 888, located within the carboxy-terminal 18 residues, is completely conserved in all flaviviruses and interacts specifically with the top-loop of 3'SL in the 3'UTR which contains the pentanucleotide 5'-CACAG-3' previously shown to be critical for flavivirus RNA replication. We present virological and biochemical data showing the importance of this Arg 888 in virus viability and de novo initiation of RNA polymerase activity in vitro. Based on our binding studies, we hypothesize that ternary complex formation of NS5 with 3'SL, followed by dimerization, leads to the formation of the de novo initiation complex that could be regulated by the reversible zipping and unzipping of cis-acting RNA elements.
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Affiliation(s)
- Sai Wang
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 169857 Singapore
| | - Kitti Wing Ki Chan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 169857 Singapore
| | - Min Jie Alvin Tan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 169857 Singapore
| | - Charlotte Flory
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 169857 Singapore
| | - Dahai Luo
- Lee Kong Chian School of Medicine, Nanyang Technological University, 636921 Singapore
| | - Julian Lescar
- School of Biological Sciences, Nanyang Technological University, 637551 Singapore
| | - Jade K Forwood
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, New South Wales 2650, Australia
| | - Subhash G Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 169857 Singapore
- Department of Microbiology and Immunology, National University of Singapore, 117545 Singapore
- Institute for Glycomics, Griffith University, Gold Coast Campus, QLD 4222, Australia
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7
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Cheng CX, Alvin Tan MJ, Chan KWK, Watanabe S, Wang S, Choy MM, Manuel M, Victorio CBL, Ong J, Reolo M, Chacko AM, Vasudevan SG. In Vitro and In Vivo Stability of P884T, a Mutation that Relocalizes Dengue Virus 2 Non-structural Protein 5. ACS Infect Dis 2021; 7:3277-3291. [PMID: 34735113 DOI: 10.1021/acsinfecdis.1c00441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Dengue virus (DENV) non-structural protein 5 (NS5) is critical for viral RNA synthesis within endoplasmic reticulum (ER)-derived replication complexes in the cytoplasm; however a proportion of NS5 is known to be localized to the nucleus of infected cells. The importance of nuclear DENV NS5 on viral replication and pathogenesis is still unclear. We recently discovered a nuclear localization signal (NLS) residing in the C-terminal 18 amino acid (Cter18) region of DENV NS5 and that a single NS5 P884T amino acid substitution adjacent to the NLS is sufficient to relocalize a significant proportion of DENV2 NS5 from the nucleus to the cytoplasm of infected cells. Here, in vitro studies show that the DENV2 NS5 P884T mutant replicates similarly to the parental wild-type infectious clone-derived virus while inducing a greater type I interferon and inflammatory cytokine response, in a manner independent of NS5's ability to degrade STAT2 or regulate SAT1 splicing. In both AG129 mouse and Aedes aegypti mosquito infection models, the P884T virus exhibits lower levels of viral replication only at early timepoints. Intriguingly, there appears to be a tendency for selection pressure to revert to the wild-type proline in P884T-infected Ae. aegypti, in agreement with the high conservation of the proline at this position of NS5 in DENV2, 3, and 4. These results suggest that the predominant nuclear localization of DENV NS5, while not required for viral RNA replication, may play a role in pathogenesis and modulation of the host immune response and contribute to viral fitness in the mosquito host.
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Affiliation(s)
- Colin X. Cheng
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Min Jie Alvin Tan
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Kitti W. K. Chan
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Satoru Watanabe
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Sai Wang
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Milly M. Choy
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Menchie Manuel
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Carla B. L. Victorio
- Laboratory for Translational and Molecular Imaging, Cancer and Stem Cell Biology Programme, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Joanne Ong
- Laboratory for Translational and Molecular Imaging, Cancer and Stem Cell Biology Programme, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Marie Reolo
- Laboratory for Translational and Molecular Imaging, Cancer and Stem Cell Biology Programme, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Ann-Marie Chacko
- Laboratory for Translational and Molecular Imaging, Cancer and Stem Cell Biology Programme, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
| | - Subhash G. Vasudevan
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857, Singapore
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, NUS, 5 Science Drive 2, Singapore 117545, Singapore
- Institute for Glycomics, Griffith University, Southport 4222, Australia
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8
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Li D, Lin MH, Rawle DJ, Jin H, Wu Z, Wang L, Lor M, Hussain M, Aaskov J, Harrich D. Dengue virus-free defective interfering particles have potent and broad anti-dengue virus activity. Commun Biol 2021; 4:557. [PMID: 33976375 PMCID: PMC8113447 DOI: 10.1038/s42003-021-02064-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 03/23/2021] [Indexed: 02/03/2023] Open
Abstract
Dengue virus (DENV) is spread from human to human through the bite of the female Aedes aegypti mosquito and leads to about 100 million clinical infections yearly. Treatment options and vaccine availability for DENV are limited. Defective interfering particles (DIPs) are considered a promising antiviral approach but infectious virus contamination has limited their development. Here, a DENV-derived DIP production cell line was developed that continuously produced DENV-free DIPs. The DIPs contained and could deliver to cells a DENV serotype 2 subgenomic defective-interfering RNA, which was originally discovered in DENV infected patients. The DIPs released into cell culture supernatant were purified and could potently inhibit replication of all DENV serotypes in cells. Antiviral therapeutics are limited for many viral infection. The DIP system described could be re-purposed to make antiviral DIPs for many other RNA viruses such as SARS-CoV-2, yellow fever, West Nile and Zika viruses.
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Affiliation(s)
- Dongsheng Li
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Min-Hsuan Lin
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Daniel J Rawle
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Hongping Jin
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Zhonglan Wu
- Ningxia Center for Disease Control and Prevention, Ningxia, China
| | - Lu Wang
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Mary Lor
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Mazhar Hussain
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - John Aaskov
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - David Harrich
- Department of Cell and Molecular Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia.
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9
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Structures of flavivirus RNA promoters suggest two binding modes with NS5 polymerase. Nat Commun 2021; 12:2530. [PMID: 33953197 PMCID: PMC8100141 DOI: 10.1038/s41467-021-22846-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 03/30/2021] [Indexed: 01/07/2023] Open
Abstract
Flaviviruses use a ~70 nucleotide stem-loop structure called stem-loop A (SLA) at the 5' end of the RNA genome as a promoter for RNA synthesis. Flaviviral polymerase NS5 specifically recognizes SLA to initiate RNA synthesis and methylate the 5' guanosine cap. We report the crystal structures of dengue (DENV) and Zika virus (ZIKV) SLAs. DENV and ZIKV SLAs differ in the relative orientations of their top stem-loop helices to bottom stems, but both form an intermolecular three-way junction with a neighboring SLA molecule. To understand how NS5 engages SLA, we determined the SLA-binding site on NS5 and modeled the NS5-SLA complex of DENV and ZIKV. Our results show that the gross conformational differences seen in DENV and ZIKV SLAs can be compensated by the differences in the domain arrangements in DENV and ZIKV NS5s. We describe two binding modes of SLA and NS5 and propose an SLA-mediated RNA synthesis mechanism.
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10
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Shi Z, Wang Y, Sun Y, Wu X, Xiao T, Dong S, Lan T. Facile One‐Pot Synthesis of Magnetic Targeted Polymers for Drug Delivery and Study on Thermal Decomposition Kinetics. ChemistrySelect 2021. [DOI: 10.1002/slct.202004607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhen Shi
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
| | - Yazhen Wang
- College of Materials Science and Engineering Qiqihar University Qiqihar 161006 China
- College of Chemistry, Chemical Engineering and Resource Utilization Northeast Forestry University Harbin 150040 China
| | - Yu Sun
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Xueying Wu
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Tianyuan Xiao
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Shaobo Dong
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
| | - Tianyu Lan
- College of Materials Science and Engineering, Heilongjiang Province Key Laboratory of Polymeric Composition Material Qiqihar University Qiqihar 161006 China
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Shi Z, Wang Y, Xiao T, Dong S, Lan T. Preparation and Thermal Decomposition Kinetics of a New Type of a Magnetic Targeting Drug Carrier. ACS OMEGA 2021; 6:3427-3433. [PMID: 33553961 PMCID: PMC7860512 DOI: 10.1021/acsomega.0c06075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 01/06/2021] [Indexed: 05/15/2023]
Abstract
We have designed a new magnetic targeting drug carrier Fe3O4-PVA with a core of triiron tetroxide (Fe3O4) and a shell made of polyvinyl alcohol (PVA) to improve the hydrophilicity of Fe3O4. With adriamycin hydrochloride as a model drug, this study goes on to measure the drug carrier performance of Fe3O4-PVA. In addition, the thermal stability and enthalpy of thermal decomposition of Fe3O4-PVA were measured using a differential scanning calorimeter with a non-isothermal decomposition method. The kinetics of thermal decomposition of Fe3O4-PVA were also investigated. Over the course of this study, it was determined that the resulting drug carrier Fe3O4-PVA exhibited high drug loading levels and excellent release levels.
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Affiliation(s)
- Zhen Shi
- College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Yazhen Wang
- College
of Materials Science and Engineering, Qiqihar
University, Qiqihar 161006, Heilongjiang, China
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
- College
of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Tianyuan Xiao
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Shaobo Dong
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
| | - Tianyu Lan
- Heilongjiang
Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar 161006, China
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Shi Z, Wang Y, Dong S, Lan T. Comparison of the performance of magnetic targeting drug carriers prepared using two synthesis methods. RSC Adv 2021; 11:20670-20678. [PMID: 35479366 PMCID: PMC9033997 DOI: 10.1039/d1ra04256d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 11/23/2022] Open
Abstract
In this paper, two methods were used to prepare the magnetic targeting drug carrier Fe3O4–PVA@SH, the step-by-step method and the one-pot method. The loading and release properties of the compound were measured. The results show that the Fe3O4–PVA@SH prepared using both methods exhibited excellent drug delivery properties in an environment that simulates human body fluid (pH 7.2) and a lysosomal in vitro simulation (pH 4.7). In applications such as drug delivery, magnetic targeted drug carriers prepared by both methods demonstrated superparamagnetism, high fat solubility, high hydroxyl content, and good water solubility. Roadmap for the synthesis of Fe3O4–PVA@SH using the step-by-step method and one-pot method.![]()
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Affiliation(s)
- Zhen Shi
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
| | - Yazhen Wang
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar 161006
- China
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
- Qiqihar 161006
- China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials
- Qiqihar 161006
- China
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Cannalire R, Ki Chan KW, Burali MS, Gwee CP, Wang S, Astolfi A, Massari S, Sabatini S, Tabarrini O, Mastrangelo E, Barreca ML, Cecchetti V, Vasudevan SG, Manfroni G. Pyridobenzothiazolones Exert Potent Anti-Dengue Activity by Hampering Multiple Functions of NS5 Polymerase. ACS Med Chem Lett 2020; 11:773-782. [PMID: 32435384 DOI: 10.1021/acsmedchemlett.9b00619] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 03/19/2020] [Indexed: 01/23/2023] Open
Abstract
Treatment of dengue virus (DENV) and other flavivirus infections is an unmet medical need. The highly conserved flaviviral NS5 RNA-dependent RNA polymerase (RdRp) is an attractive antiviral target that interacts with NS3 and viral RNA within the replication complex assembly. Biochemical and cell-based evidence indicate that targeting cavity B may lead to dual RdRp and NS5-NS3 interaction inhibitors. By ligand-based design around 1H-pyrido[2,1-b][1,3]benzothiazol-1-one (PBTZ) 1, we identified new potent and selective DENV inhibitors that exert dual inhibition of NS5 RdRp and NS3-NS5 interaction, likely through binding cavity B. Resistance studies with compound 4 generated sequence variants in the 3'-untranslated region of RNA while further biochemical experiments demonstrated its ability to block also RNA-NS5 interaction, required for correct RNA synthesis in cells. These findings shed light on the potential mechanism of action for this class of compounds, underlying how PBTZs are very promising lead candidates for further evaluation.
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Affiliation(s)
- Rolando Cannalire
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Kitti Wing Ki Chan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857
| | - Maria Sole Burali
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Chin Piaw Gwee
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857
| | - Sai Wang
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857
| | - Andrea Astolfi
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Serena Massari
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Stefano Sabatini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Oriana Tabarrini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Eloise Mastrangelo
- Dipartimento di Bioscienze, Università di Milano, Via Celoria 26, I-20133 Milano, Italy
- CNR-IBF, Consiglio Nazionale delle Ricerche, Istituto di Biofisica, Via Celoria 26, I-20133 Milano, Italy
| | - Maria Letizia Barreca
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Violetta Cecchetti
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
| | - Subhash G. Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8 College Road, Singapore 169857
- Department of Microbiology and Immunology, National University of Singapore, 5 Science Drive 2, Singapore 117545
- Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland 4022, Australia
| | - Giuseppe Manfroni
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via del Liceo, 1-06123 Perugia, Italy
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