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Ni H, Zhang X, Huang J, Wang M, Cheng A, Liu M, Zhu D, Chen S, Zhao X, Yang Q, Wu Y, Zhang S, Ou X, Sun D, Tian B, Jing B, Jia R. Duck plague virus-encoded microRNA dev-miR-D28-3p inhibits viral replication via targeting UL27. Vet Microbiol 2024; 297:110202. [PMID: 39094384 DOI: 10.1016/j.vetmic.2024.110202] [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: 01/30/2024] [Revised: 07/21/2024] [Accepted: 07/26/2024] [Indexed: 08/04/2024]
Abstract
Herpesviruses-encoded microRNAs (miRNAs) have been discovered to be essential regulators in viral life cycle, participating in viral replication, latent or lytic infection, and immunological escape. However, the roles of miRNAs encoded by duck plague virus (DPV) are still unknown. Dev-miR-D28-3p is a miRNA uniquely encoded by DPV CHv strain. The aim of this study was to explore the effect of dev-miR-D28-3p on DPV replication and explore the potential mechanisms involved. Our findings demonstrated that transfection of dev-miR-D28-3p mimic into duck embryo fibroblasts (DEFs) effectively suppressed viral copies, viral titers and viral protein expressions during DPV infection, while the results above were reversed after transfection with dev-miR-D28-3p inhibitor. Subsequently, we further discovered that dev-miR-D28-3p specifically bound to DPV-encoded UL27 and inhibited its expression, suggesting that UL27 was the target gene of dev-miR-D28-3p. Finally, we investigated the role of UL27 in DPV replication and found the overexpression of UL27 increased viral copies, viral titers, and viral protein expressions; whereas the opposite results appear when knockdown of UL27. Our findings illustrated a novel mechanism that DPV regulated itself replication via dev-miR-D28-3p, paving the way for exploring the role of DPV-encoded miRNAs.
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Affiliation(s)
- Hui Ni
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Xingcui Zhang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Juan Huang
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Mingshu Wang
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Anchun Cheng
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China.
| | - Mafeng Liu
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Dekang Zhu
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Shun Chen
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Xinxin Zhao
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Qiao Yang
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Ying Wu
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Shaqiu Zhang
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Xumin Ou
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Di Sun
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Bin Tian
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Bo Jing
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China
| | - Renyong Jia
- Research Center of Avian Disease, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Engineering Research Center of Southwest Animal Disease Prevention and Control Technology, Ministry of Education, Wenjiang District, Chengdu City, Sichuan Province 611130, China; Key Laboratory of Animal Disease and Human Health of Sichuan Province, Wenjiang District, Chengdu City, Sichuan Province 611130, China.
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Gianopulos KA, Makio AO, Pritchard SM, Cunha CW, Hull MA, Nicola AV. Herpes Simplex Virus 1 Glycoprotein B from a Hyperfusogenic Virus Mediates Enhanced Cell-Cell Fusion. Viruses 2024; 16:251. [PMID: 38400027 PMCID: PMC10892784 DOI: 10.3390/v16020251] [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: 12/05/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
Herpes simplex virus 1 (HSV-1) causes significant morbidity and death in humans worldwide. Herpes simplex virus 1 has a complex fusion mechanism that is incompletely understood. The HSV-1 strain ANG has notable fusion and entry activities that distinguish it from wild type. HSV-1 ANG virions fused with the Vero cell surface at 4 °C and also entered cells more efficiently at 15 °C, relative to wild type HSV-1 strain KOS virions, consistent with a hyperfusogenic phenotype. Understanding the molecular basis for the unique entry and fusion activities of HSV-1 strain ANG will help decipher the HSV fusion reaction and entry process. Sequencing of HSV-1 ANG genes revealed multiple changes in gB, gC, gD, gH, and gL proteins relative to wild type HSV-1 strains. The ANG UL45 gene sequence, which codes for a non-essential envelope protein, was identical to wild type KOS. HSV-1 ANG gB, gD, and gH/gL were necessary and sufficient to mediate cell-cell fusion in a virus-free reporter assay. ANG gB, when expressed with wild type KOS gD and gH/gL, increased membrane fusion, suggesting that ANG gB has hyperfusogenic cell-cell fusion activity. Replacing the KOS gD, gH, or gL with the corresponding ANG alleles did not enhance cell-cell fusion. The novel mutations in the ANG fusion and entry glycoproteins provide a platform for dissecting the cascade of interactions that culminate in HSV fusion and entry.
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Affiliation(s)
- Katrina A. Gianopulos
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA
- Protein Biotechnology Graduate Training Program, Washington State University, Pullman, WA 99164, USA
| | - Albina O. Makio
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
- Protein Biotechnology Graduate Training Program, Washington State University, Pullman, WA 99164, USA
| | - Suzanne M. Pritchard
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
| | - Cristina W. Cunha
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
- Animal Disease Research Unit, Agricultural Research Service, United States Department of Agriculture, Pullman, WA 99164, USA
| | - McKenna A. Hull
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
| | - Anthony V. Nicola
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA; (K.A.G.); (A.O.M.); (C.W.C.)
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Gianopulos KA, Komala Sari T, Weed DJ, Pritchard SM, Nicola AV. Conformational Changes in Herpes Simplex Virus Glycoprotein C. J Virol 2022; 96:e0016322. [PMID: 35913218 PMCID: PMC9400475 DOI: 10.1128/jvi.00163-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 07/05/2022] [Indexed: 02/03/2023] Open
Abstract
Low endosomal pH facilitates herpesvirus entry in a cell-specific manner. Herpes simplex virus 1 (HSV-1) causes significant morbidity and death in humans worldwide. HSV-1 enters cells by low-pH and neutral-pH pathways. Low-pH-induced conformational changes in the HSV envelope glycoprotein B (gB) may mediate membrane fusion during viral entry. HSV-1 gC, a 511-amino acid, type I integral membrane glycoprotein, mediates HSV-1 attachment to host cell surface glycosaminoglycans, but this interaction is not essential for viral entry. We previously demonstrated that gC regulates low-pH viral entry independent of its known role in cell attachment. Low-pH-triggered conformational changes in gB occur at a lower pH when gC is absent, suggesting that gC positively regulates gB conformational changes. Here, we demonstrate that mildly acidic pH triggers conformational changes in gC itself. Low-pH treatment of virions induced antigenic changes in distinct gC epitopes, and those changes were reversible. One of these gC epitopes is recognized by a monoclonal antibody that binds to a linear sequence that includes residues within gC amino acids 33 to 123. This antibody inhibited low-pH entry of HSV, suggesting that its gC N-terminal epitope is particularly important. We propose that gC plays a critical role in HSV entry through a low-pH endocytosis pathway, which is a major entry route in human epithelial cells. IMPORTANCE Herpesviruses are ubiquitous pathogens that cause lifelong latent infections and are characterized by multiple entry pathways. The HSV envelope gC regulates HSV entry by a low-pH entry route. The fusion protein gB undergoes pH-triggered conformational changes that are facilitated by gC. Here, we report that gC itself undergoes a conformational change at low pH. A monoclonal antibody to gC that binds to a region that undergoes pH-induced changes also selectively inhibits HSV low-pH entry, corroborating the importance of gC in the low-pH entry pathway. This study illustrates the complex role of endosomal pH during HSV entry and provides novel insights into the functions of gC.
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Affiliation(s)
- Katrina A. Gianopulos
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Protein Biotechnology Graduate Training Program, Washington State University, Pullman, Washington, USA
| | - Tri Komala Sari
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Protein Biotechnology Graduate Training Program, Washington State University, Pullman, Washington, USA
- Faculty of Veterinary Medicine, Udayana University, Bali, Indonesia
| | - Darin J. Weed
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Protein Biotechnology Graduate Training Program, Washington State University, Pullman, Washington, USA
| | - Suzanne M. Pritchard
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Anthony V. Nicola
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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Wang W, Xu C, Zhang J, Wang J, Yu R, Wang D, Yin R, Li W, Jiang T. Guanidine modifications enhance the anti-herpes simplex virus activity of (E,E)-4,6-bis(styryl)-pyrimidine derivatives in vitro and in vivo. Br J Pharmacol 2020; 177:1568-1588. [PMID: 31709511 DOI: 10.1111/bph.14918] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/03/2019] [Accepted: 10/24/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND AND PURPOSE The worldwide prevalence of herpes simplex virus (HSV) and shortage of efficient therapeutic strategies to counteract it are global concerns. In terms of treatment, the widely utilized anti-HSV drugs such as acyclovir have serious limitations, for example, drug resistance and side effects. Here, we have identified the guanidine-modified (E,E)-4,6-bis(styryl)-pyrimidine (BS-pyrimidine) derivative compound 5d as an inhibitor of HSV and further elucidated the anti-HSV mechanisms of compound 5d both in vitro and in vivo. EXPERIMENTAL APPROACH Cytopathic effect inhibition assay, plaque assay, and immunofluorescence assay were used to evaluate the anti-HSV effects of compound 5d in vitro. Membrane fusion assays, immunofluorescence assays, Western blotting assays, and pull-down assays were used to explore the anti-HSV mechanisms of compound 5d. HSV-1-infected mice, combined with haematoxylin-eosin staining and quantitative RT-PCR, were used to study the anti-HSV effects of compound 5d in vivo. KEY RESULTS The guanidine-modified compound 5d rather than the un-modified compound 3a effectively inhibited both HSV-1 and HSV-2 multiplication in different cell lines, more effectively than acyclovir. Compound 5d may block virus binding and post-binding processes such as membrane fusion, by targeting virus gB protein. In addition, compound 5d may also down-regulate the cellular PI3K/Akt signalling pathway to interfere with HSV replication. Treatment with compound 5d also markedly improved survival and decreased viral titres in HSV-infected mice. CONCLUSIONS AND IMPLICATIONS Thus, the guanidine-modified BS-pyrimidine derivatives have the potential to be developed into novel anti-HSV agents targeting both virus gB protein and cellular PI3K/Akt signalling pathways.
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Affiliation(s)
- Wei Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Cuijing Xu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Jianqiang Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Jinpeng Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Rilei Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Dongping Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Ruijuan Yin
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Wenmiao Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
| | - Tao Jiang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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