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Char AB, Trammell CE, Fawcett S, Chauhan M, Debebe Y, Céspedes N, Paslay RA, Ahlers LRH, Patel D, Luckhart S, Goodman AG. Sustained antiviral insulin signaling during West Nile virus infection results in viral mutations. Front Cell Infect Microbiol 2024; 14:1492403. [PMID: 39664493 PMCID: PMC11631865 DOI: 10.3389/fcimb.2024.1492403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2024] [Accepted: 10/28/2024] [Indexed: 12/13/2024] Open
Abstract
Arthropod-borne viruses or arboviruses, including West Nile virus (WNV), dengue virus (DENV), and Zika virus (ZIKV) pose significant threats to public health. It is imperative to develop novel methods to control these mosquito-borne viral infections. We previously showed that insulin/insulin-like growth factor-1 signaling (IIS)-dependent activation of ERK and JAK-STAT signaling has significant antiviral activity in insects and human cells. Continuous immune pressure can lead to adaptive mutations of viruses during infection. We aim to elucidate how IIS-signaling in mosquitoes selects for West Nile virus escape variants, to help formulate future transmission blocking strategies. We hypothesize that passage of WNV under activation of IIS will induce adaptive mutations or escape variants in the infecting virus. To test our hypothesis, WNV was serially passaged through Culex quinquefasciatus Hsu cells in the presence or absence of bovine insulin to activate IIS antiviral pressure. We sequenced WNV genes encoding for E, NS2B, NS3, and NS5 and identified variants in E and NS5 arising from IIS antiviral pressure. In parallel to the genetic analyses, we also report differences in the levels of virus replication and Akt activation in human cells and mosquitoes using virus passaged in the presence or absence of insulin. Finally, using adult Culex quinquefasciatus, we demonstrated the enhancement of immune response gene expression in virus-infected mosquitoes fed on insulin, compared to control. Notably, virus collected from insulin-fed mosquitoes contained a non-synonymous mutation in NS3. These results contribute towards achieving our long-term goal of manipulating mosquito IIS-dependent antiviral immunity to reduce WNV or other flavivirus transmission to mammalian hosts.
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Affiliation(s)
- Aditya B. Char
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
| | - Chasity E. Trammell
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
- Deptartment of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, United States
| | - Stephen Fawcett
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
| | - Manish Chauhan
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
| | - Yared Debebe
- Department of Entomology, Plant Pathology, and Nematology, College of Agricultural and Life Sciences, University of Idaho, Moscow, ID, United States
| | - Nora Céspedes
- Department of Entomology, Plant Pathology, and Nematology, College of Agricultural and Life Sciences, University of Idaho, Moscow, ID, United States
| | - Ryder A. Paslay
- Department of Entomology, Plant Pathology, and Nematology, College of Agricultural and Life Sciences, University of Idaho, Moscow, ID, United States
| | - Laura R. H. Ahlers
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
| | - Dharmeshkumar Patel
- Center for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children’s Healthcare of Atlanta, Atlanta, GA, United States
| | - Shirley Luckhart
- Department of Entomology, Plant Pathology, and Nematology, College of Agricultural and Life Sciences, University of Idaho, Moscow, ID, United States
- Department of Biological Sciences, College of Science, University of Idaho, Moscow, ID, United States
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
- Paul G. Allen School of Global Health, College of Veterinary Medicine, Washington State University, Pullman, WA, United States
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Chen TY, Marín-López A, Raduwan H, Fikrig E. Aedes aegypti adiponectin receptor-like protein signaling facilitates Zika virus infection. mBio 2024; 15:e0243324. [PMID: 39373507 PMCID: PMC11559040 DOI: 10.1128/mbio.02433-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Accepted: 09/18/2024] [Indexed: 10/08/2024] Open
Abstract
The Aedes aegypti mosquito plays a critical role in the transmission of viral diseases, including Zika virus, which poses significant public health challenges. Understanding the complex interactions between mosquitoes and viruses is paramount for the development of effective control strategies. In this study, we demonstrate that silencing the A. aegypti adiponectin receptor-like protein (AaARLP) results in a reduction of Zika virus infection. Transcriptomic analysis identified alterations in several trypsin genes and further revealed that AaARLP-knockdown mosquitoes had diminished trypsin activity. Moreover, silencing of selected trypsins resulted in a similar delay in Zika virus infection in mosquitoes, further highlighting the connection between the AaARLP and trypsin. Overall, our findings demonstrate that AaARLP signaling is important for Zika virus infection of A. aegypti. IMPORTANCE Arboviruses pose a significant threat to public health, with mosquitoes, especially Aedes aegypti, being a major vector for their transmission. Gaining insight into the complex interaction between mosquitoes and viruses is essential to build successful control strategies. In this study, we identified a novel pathway connecting the A. aegypti adiponectin receptor-like protein and its association with trypsin, key enzymes involved in blood digestion. Furthermore, we demonstrated the significance of signaling via the adiponectin receptor-like protein in virus infection within the mosquito. Together, our discoveries illuminate mosquito metabolic pathways essential in viral infection.
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Affiliation(s)
- Tse-Yu Chen
- Section of Infectious Diseases, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Alejandro Marín-López
- Section of Infectious Diseases, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Hamidah Raduwan
- Section of Infectious Diseases, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut, USA
| | - Erol Fikrig
- Section of Infectious Diseases, Department of Internal Medicine, School of Medicine, Yale University, New Haven, Connecticut, USA
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Palmero Casanova B, Albentosa González L, Maringer K, Sabariegos R, Mas A. A conserved role for AKT in the replication of emerging flaviviruses in vertebrates and vectors. Virus Res 2024; 348:199447. [PMID: 39117146 PMCID: PMC11364138 DOI: 10.1016/j.virusres.2024.199447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/11/2024] [Accepted: 08/05/2024] [Indexed: 08/10/2024]
Abstract
One third of all emerging infectious diseases are vector-borne, with no licensed antiviral therapies available against any vector-borne viruses. Zika virus and Usutu virus are two emerging flaviviruses transmitted primarily by mosquitoes. These viruses modulate different host pathways, including the PI3K/AKT/mTOR pathway. Here, we report the effect on ZIKV and USUV replication of two AKT inhibitors, Miransertib (ARQ-092, allosteric inhibitor) and Capivasertib (AZD5363, competitive inhibitor) in different mammalian and mosquito cell lines. Miransertib showed a stronger inhibitory effect against ZIKV and USUV than Capivasertib in mammalian cells, while Capivasertib showed a stronger effect in mosquito cells. These findings indicate that AKT plays a conserved role in flavivirus infection, in both the vertebrate host and invertebrate vector. Nevertheless, the specific function of AKT may vary depending on the host species. These findings indicate that AKT may be playing a conserved role in flavivirus infection in both, the vertebrate host and the invertebrate vector. However, the specific function of AKT may vary depending on the host species. A better understanding of virus-host interactions is therefore required to develop new treatments to prevent human disease and new approaches to control transmission by insect vectors.
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Affiliation(s)
- Blanca Palmero Casanova
- Instituto de Investigación Biomédica de la UCLM (IB-UCLM), C/Almansa 14, 02008 Albacete, Spain
| | - Laura Albentosa González
- Instituto de Investigación Biomédica de la UCLM (IB-UCLM), C/Almansa 14, 02008 Albacete, Spain; Facultad de farmacia, Universidad de Castilla-La Mancha, Av. Dr. José María Sánchez Ibáñez, s/n, 02008 Albacete, Spain
| | - Kevin Maringer
- The Pirbright Institute, Ash Road, Pirbright, Surrey GU24 0NF, UK
| | - Rosario Sabariegos
- Instituto de Investigación Biomédica de la UCLM (IB-UCLM), C/Almansa 14, 02008 Albacete, Spain; Unidad asociada de Biomedicina UCLM-CSIC. Universidad de Castilla-La Mancha. C/Altagracia 50, 13071 Ciudad Real, Spain; Facultad de Medicina, Universidad de Castilla-La Mancha. C/Almansa 14, 02008 Albacete, Spain
| | - Antonio Mas
- Instituto de Investigación Biomédica de la UCLM (IB-UCLM), C/Almansa 14, 02008 Albacete, Spain; Facultad de farmacia, Universidad de Castilla-La Mancha, Av. Dr. José María Sánchez Ibáñez, s/n, 02008 Albacete, Spain; Unidad asociada de Biomedicina UCLM-CSIC. Universidad de Castilla-La Mancha. C/Altagracia 50, 13071 Ciudad Real, Spain.
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Shawon SR, Hamid MKI, Ahmed H, Khan SA, Dewan SMR. Dengue fever in hyperglycemic patients: an emerging public health concern demanding eyes on the effective management strategies. Health Sci Rep 2024; 7:e70144. [PMID: 39421212 PMCID: PMC11483528 DOI: 10.1002/hsr2.70144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 09/16/2024] [Accepted: 09/26/2024] [Indexed: 10/19/2024] Open
Abstract
Background and aims Hyperglycemia, also known as diabetes, is a metabolic disorder characterized by elevated levels of glucose in the bloodstream. It can lead to the prolonged dysfunction, injury, and deterioration of several organs. In addition, dengue is a viral illness transmitted by mosquitoes that has reached epidemic proportions worldwide. In this article, we focused on the severity of comorbidities, difficulties in managing them, and preventive measures meant to lessen the risks associated with comorbidities in diabetic patients with dengue infection. Methods We explored a number of databases, including PubMed, Scopus, Embase, Web of Science, Google Scholar, and the Cochrane Library, for this review article using various related keywords. Results The findings of this review article indicate that elderly dengue patients with diabetes should be admitted to the hospital for close observation and early management using fluid therapy. An observed association exists between dengue hemorrhagic fever (DHF) and diabetes, indicating a possible consequence in this specific group. Additionally, patients with diabetes who contract dengue show elevated levels of inflammatory markers. Diabetes mellitus deteriorates the immune system, which exacerbates the progression of dengue fever. Cutting-edge technology and scientific research may assist in addressing the challenges that diabetes and dengue viruses pose in low- and middle-income countries. Implementing innovative diabetic care management is essential to ensuring consistency of care, improving a healthy lifestyle, and lowering patient risk factors and comorbidities. Conclusion Dengue fever has spread to epidemic levels throughout the world. Inflammatory markers increase and the prevalence of DHF is greater in diabetes individuals with dengue infection. Given the continued growth of dengue in Asian nations, it is imperative that we concentrate our efforts and resources on providing more precise and effective treatment for this emerging issue.
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Affiliation(s)
- Shandipon Roy Shawon
- Department of Pharmacy, School of MedicineUniversity of Asia PacificDhakaBangladesh
| | | | - Hossain Ahmed
- Department of Pharmacy, School of MedicineUniversity of Asia PacificDhakaBangladesh
| | - Sakif Ahamed Khan
- Department of Pharmacy, School of MedicineUniversity of Asia PacificDhakaBangladesh
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Chauhan M, Martinak PE, Hollenberg BM, Goodman AG. Drosophila melanogaster Toll-9 elicits antiviral immunity against Drosophila C virus. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.19.599730. [PMID: 38948804 PMCID: PMC11212974 DOI: 10.1101/2024.06.19.599730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The Toll pathway plays a pivotal role in innate immune responses against pathogens. The evolutionary conserved pathogen recognition receptors (PRRs), including Toll like receptors (TLRs), play a crucial role in recognition of pathogen associated molecular patterns (PAMPs). The Drosophila genome encodes nine Toll receptors that are orthologous to mammalian TLRs. While mammalian TLRs directly recognize PAMPs, most Drosophila Tolls recognize the proteolytically cleaved ligand Spätzle to activate downstream signaling cascades. In this study, we demonstrated that Toll-9 is crucial for antiviral immunity against Drosophila C virus (DCV), a natural pathogen of Drosophila . A transposable element insertion in the Toll-9 gene renders the flies more susceptible to DCV. The stable expression of Toll-9 in S2 cells confers resistance against DCV infection by upregulation of the RNAi pathway. Toll-9 promotes the dephosphorylation of AKT, resulting in the induction of antiviral RNAi genes to inhibit DCV replication. Toll-9 localizes to the endosome where it binds dsRNA, suggesting its role to detect viral dsRNA. Toll-9 also induces apoptosis during DCV infection, contributing to its antiviral role. Together, this work identifies the role of Toll-9 in antiviral immunity against DCV infection through its ability to bind dsRNA and induce AKT-mediated RNAi antiviral immunity. IMPORTANCE Insects rely on innate immunity and RNA interference (RNAi) to combat viral infections. Our study underscores the pivotal role of Drosophila Toll-9 in antiviral immunity, aligning with findings in Bombyx mori , where Toll-9 activation upregulates the RNAi component Dicer2 . We demonstrate that Drosophila Toll-9 functions as a pattern recognition receptor (PRR) for double-stranded RNA (dsRNA) during Drosophila C virus (DCV) infection, akin to mammalian TLRs. Toll-9 activation leads to the upregulation of key RNAi components, Dicer2 and Argonaute2 , and dephosphorylation of AKT triggers apoptosis via induction of proapoptotic genes Hid and Reaper . This study also reveals that Toll-9 localizes in endosomal compartments where it interacts with dsRNA. These insights enhance our understanding of Drosophila innate immune mechanisms, reflecting the evolutionary conservation of immune responses across diverse species and providing impetus for further research into the conserved roles of TLRs across the animal kingdom.
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Mead EB, Lee M, Trammell CE, Goodman AG. Drosophila melanogaster Limostatin and Its Human Ortholog Promote West Nile Virus Infection. INSECTS 2024; 15:446. [PMID: 38921161 PMCID: PMC11203814 DOI: 10.3390/insects15060446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/04/2024] [Accepted: 06/06/2024] [Indexed: 06/27/2024]
Abstract
The arbovirus West Nile virus (WNV) is a danger to global health. Spread primarily by mosquitoes, WNV causes about 2000 cases per year in the United States. The natural mosquito immune response controls viral replication so that the host survives but can still transmit the virus. Using the genetically malleable Drosophila melanogaster model, we previously dissected innate immune pathways used to control WNV infection. Specifically, we showed that insulin/IGF-1 signaling (IIS) activates a JAK/STAT-mediated immune response that reduces WNV. However, how factors that regulate IIS in insects control infection has not been identified. D. melanogaster Limostatin (Lst) encodes a peptide hormone that suppresses insulin secretion. Its mammalian ortholog, Neuromedin U (NMU), is a peptide that regulates the production and secretion of insulin from pancreatic beta cells. In this study, we used D. melanogaster and human cell culture models to investigate the roles of these insulin regulators in immune signaling. We found that D. melanogaster Lst mutants, which have elevated insulin-like peptide expression, are less susceptible to WNV infection. Increased levels of insulin-like peptides in these flies result in upregulated JAK/STAT activity, leading to protection from infection. Treatment of human cells with the insulin regulator NMU results in increased WNV replication. Further investigation of methods to target Lst in mosquitoes or NMU in mammals can improve vector control methods and may lead to improved therapeutics for human and animal infection.
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Affiliation(s)
- Ezra B. Mead
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Miyoung Lee
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Chasity E. Trammell
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
- Paul G. Allen School of Global Health, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
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Cendejas PM, Goodman AG. Vaccination and Control Methods of West Nile Virus Infection in Equids and Humans. Vaccines (Basel) 2024; 12:485. [PMID: 38793736 PMCID: PMC11125624 DOI: 10.3390/vaccines12050485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/22/2024] [Accepted: 04/28/2024] [Indexed: 05/26/2024] Open
Abstract
West Nile virus (WNV) is capable of causing severe neurologic disease in both humans and equines, making it a disease of importance in both human medicine and veterinary medicine. No targeted treatments exist for WNV infection in either humans or equines. Infection is treated symptomatically through management of symptoms like fever and seizures. As treatment for WNV is purely supportive, the response to WNV has focused primarily on methods of disease prevention. To this end, research efforts have yielded several effective vaccines for equine use as well as numerous conventional mosquito control techniques. Even with the implementation of these techniques, disease caused by WNV remains a concern since no human vaccine exists. Due to the lack of a human vaccine, novel preventative strategies are under active research and development. Of these strategies, some of the most conceptually promising are techniques using genetically modified mosquitoes, addressing the disease at the vector level with minimal ecological side effects. Taken together, the use of combined, synergistic methods, such as physical barriers, transgenic mosquitoes, and immunological targets, will be the best way to prevent WNV disease.
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Affiliation(s)
- Parker M. Cendejas
- Doctor of Veterinary Medicine Graduate Program, Washington State University, Pullman, WA 99164, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, Washington State University, Pullman, WA 99164, USA
- Paul G. Allen School of Global Health, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
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Joshi G, Das A, Verma G, Guchhait P. Viral infection and host immune response in diabetes. IUBMB Life 2024; 76:242-266. [PMID: 38063433 DOI: 10.1002/iub.2794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 11/05/2023] [Indexed: 04/24/2024]
Abstract
Diabetes, a chronic metabolic disorder disrupting blood sugar regulation, has emerged as a prominent silent pandemic. Uncontrolled diabetes predisposes an individual to develop fatal complications like cardiovascular disorders, kidney damage, and neuropathies and aggravates the severity of treatable infections. Escalating cases of Type 1 and Type 2 diabetes correlate with a global upswing in diabetes-linked mortality. As a growing global concern with limited preventive interventions, diabetes necessitates extensive research to mitigate its healthcare burden and assist ailing patients. An altered immune system exacerbated by chronic hyperinflammation heightens the susceptibility of diabetic individuals to microbial infections, including notable viruses like SARS-CoV-2, dengue, and influenza. Given such a scenario, we scrutinized the literature and compiled molecular pathways and signaling cascades related to immune compartments in diabetics that escalate the severity associated with the above-mentioned viral infections in them as compared to healthy individuals. The pathogenesis of these viral infections that trigger diabetes compromises both innate and adaptive immune functions and pre-existing diabetes also leads to heightened disease severity. Lastly, this review succinctly outlines available treatments for diabetics, which may hold promise as preventive or supportive measures to effectively combat these viral infections in the former.
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Affiliation(s)
- Garima Joshi
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Anushka Das
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Garima Verma
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Prasenjit Guchhait
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
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Trammell CE, Rowe EH, Char AB, Jones BJ, Fawcett S, Ahlers LRH, Goodman AG. Insulin-mediated endothelin signaling is antiviral during West Nile virus infection. J Virol 2023; 97:e0111223. [PMID: 37796127 PMCID: PMC10617537 DOI: 10.1128/jvi.01112-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 08/20/2023] [Indexed: 10/06/2023] Open
Abstract
IMPORTANCE Arboviruses, particularly those transmitted by mosquitoes, pose a significant threat to humans and are an increasing concern because of climate change, human activity, and expanding vector-competent populations. West Nile virus is of significant concern as the most frequent mosquito-borne disease transmitted annually within the continental United States. Here, we identify a previously uncharacterized signaling pathway that impacts West Nile virus infection, namely endothelin signaling. Additionally, we demonstrate that we can successfully translate results obtained from D. melanogaster into the more relevant human system. Our results add to the growing field of insulin-mediated antiviral immunity and identify potential biomarkers or intervention targets to better address West Nile virus infection and severe disease.
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Affiliation(s)
- Chasity E. Trammell
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Evelyn H. Rowe
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Aditya B. Char
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Brianne J. Jones
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Stephen Fawcett
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Laura R. H. Ahlers
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Paul G. Allen School for Global Health, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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Trammell CE, Rowe EH, Jones BJ, Char AB, Fawcett S, Ahlers LR, Goodman AG. Insulin-mediated endothelin signaling is antiviral during West Nile virus infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.17.524426. [PMID: 36712090 PMCID: PMC9882177 DOI: 10.1101/2023.01.17.524426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
West Nile virus (WNV) is the most prevalent mosquito-borne virus in the United States with approximately 2,000 cases each year. There are currently no approved human vaccines and a lack of prophylactic and therapeutic treatments. Understanding host responses to infection may reveal potential intervention targets to reduce virus replication and disease progression. The use of Drosophila melanogaster as a model organism to understand innate immunity and host antiviral responses is well established. Previous studies revealed that insulin-mediated signaling regulates WNV infection in invertebrates by regulating canonical antiviral pathways. Because insulin signaling is well-conserved across insect and mammalian species, we sought to determine if results using D. melanogaster can be extrapolated for the analysis of orthologous pathways in humans. Here, we identify insulin-mediated endothelin signaling using the D. melanogaster model and evaluate an orthologous pathway in human cells during WNV infection. We demonstrate that endothelin signaling reduces WNV replication through the activation of canonical antiviral signaling. Taken together, our findings show that endothelin-mediated antiviral immunity is broadly conserved across species and reduces replication of viruses that can cause severe human disease. IMPORTANCE Arboviruses, particularly those transmitted by mosquitoes, pose a significant threat to humans and are an increasing concern because of climate change, human activity, and expanding vector-competent populations. West Nile virus is of significant concern as the most frequent mosquito-borne disease transmitted annually within the continental United States. Here, we identify a previously uncharacterized signaling pathway that impacts West Nile virus infection, namely endothelin signaling. Additionally, we demonstrate that we can successfully translate results obtained from D. melanogaster into the more relevant human system. Our results add to the growing field of insulin-mediated antiviral immunity and identifies potential biomarkers or intervention targets to better address West Nile virus infection and severe disease.
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Affiliation(s)
- Chasity E. Trammell
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Evelyn H. Rowe
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Brianne J. Jones
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Aditya B. Char
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Stephen Fawcett
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
| | - Laura R.H. Ahlers
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
- Paul G. Allen School for Global Health, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
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Zhang D, Peng C, Li C, Li Y, Zhang H, Li N, Xiao P. Metavirome Analysis of Culex tritaeniorhynchus Reveals Novel Japanese Encephalitis Virus and Chikungunya Virus. Front Cell Infect Microbiol 2022; 12:938576. [PMID: 35846772 PMCID: PMC9280054 DOI: 10.3389/fcimb.2022.938576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 05/31/2022] [Indexed: 11/14/2022] Open
Abstract
To explore the Culex tritaeniorhynchuses–specific virome, 6400 C. tritaeniorhynchuses were collected in Honghe autonomous prefecture, China. Abundant virus sequences were obtained from 28 viral families using metavirome sequencing. Herein, several viruses in C. tritaeniorhynchuses virome were verified using the PCR technique, which covers Japanese encephalitis virus (JEV), Getah virus, and even Chikungunya virus (CHIKV). Seven JEV gene sequences were amplified successfully, of which JEV-China/CT2016E-1 shared the highest homology with the known JEV sequence isolated in Korea, 1946, with at least 96.1% nucleotide (nt) identity, which belonged to genotype III. Nine CHIKV gene sequences were amplified, which shared the highest with at least 93.0% nt identity with CHIKV from Thailand isolated in 2007, which was assigned to genotype Asian. Remarkably, CHIKV was isolated from C. tritaeniorhynchus in China for the first time. It was initially confirmed that the isolated virus CHIKV-China/CT2016-1 may increase infectivity after passaging in Vero cells from BHK-21 cells. Collectively, our study reveals the diversity, properties, and potential virus susceptibility dynamics of the C. tritaeniorhynchus virome and sheds new perspectives on the viral ecology in other important biological vectors.
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Affiliation(s)
- Duo Zhang
- Wenzhou Key Laboratory for Virology and Immunology, Institute of Virology, Wenzhou University, Wenzhou, China
| | - Chengcheng Peng
- Wenzhou Key Laboratory for Virology and Immunology, Institute of Virology, Wenzhou University, Wenzhou, China
| | - Chenghui Li
- College of Agriculture, Yanbian University, Yanji, China
| | - Yiquan Li
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun, China
| | - He Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Nan Li
- Wenzhou Key Laboratory for Virology and Immunology, Institute of Virology, Wenzhou University, Wenzhou, China
- *Correspondence: Nan Li, ; Pengpeng Xiao,
| | - Pengpeng Xiao
- Wenzhou Key Laboratory for Virology and Immunology, Institute of Virology, Wenzhou University, Wenzhou, China
- *Correspondence: Nan Li, ; Pengpeng Xiao,
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