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Akter R, Tasneem F, Das S, Soma MA, Georgakopoulos-Soares I, Juthi RT, Sazed SA. Approaches of dengue control: vaccine strategies and future aspects. Front Immunol 2024; 15:1362780. [PMID: 38487527 PMCID: PMC10937410 DOI: 10.3389/fimmu.2024.1362780] [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: 12/29/2023] [Accepted: 02/08/2024] [Indexed: 03/17/2024] Open
Abstract
Dengue, caused by the dengue virus (DENV), affects millions of people worldwide every year. This virus has two distinct life cycles, one in the human and another in the mosquito, and both cycles are crucial to be controlled. To control the vector of DENV, the mosquito Aedes aegypti, scientists employed many techniques, which were later proved ineffective and harmful in many ways. Consequently, the attention shifted to the development of a vaccine; researchers have targeted the E protein, a surface protein of the virus and the NS1 protein, an extracellular protein. There are several types of vaccines developed so far, such as live attenuated vaccines, recombinant subunit vaccines, inactivated virus vaccines, viral vectored vaccines, DNA vaccines, and mRNA vaccines. Along with these, scientists are exploring new strategies of developing improved version of the vaccine by employing recombinant DNA plasmid against NS1 and also aiming to prevent the infection by blocking the DENV life cycle inside the mosquitoes. Here, we discussed the aspects of research in the field of vaccines until now and identified some prospects for future vaccine developments.
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Affiliation(s)
- Runa Akter
- Department of Pharmacy, Independent University Bangladesh, Dhaka, Bangladesh
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
| | - Faria Tasneem
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
| | - Shuvo Das
- Department of Clinical Pharmacy and Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka, Bangladesh
| | | | - Ilias Georgakopoulos-Soares
- Institute for Personalized Medicine, Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA, United States
| | - Rifat Tasnim Juthi
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | - Saiful Arefeen Sazed
- Institute for Personalized Medicine, Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, PA, United States
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Sung J, Cheong Y, Kim YS, Ahn J, Sohn MH, Byun S, Seong BL. Harnessing Pentameric Scaffold of Cholera Toxin B (CTB) for Design of Subvirion Recombinant Dengue Virus Vaccine. Vaccines (Basel) 2024; 12:92. [PMID: 38250905 PMCID: PMC10819241 DOI: 10.3390/vaccines12010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/09/2024] [Accepted: 01/16/2024] [Indexed: 01/23/2024] Open
Abstract
Dengue virus is an enveloped virus with an icosahedral assembly of envelope proteins (E). The E proteins are arranged as a head-to-tail homodimer, and domain III (EDIII) is placed at the edge of the dimer, converging to a pentamer interface. For a structure-based approach, cholera toxin B (CTB) was harnessed as a structural scaffold for the five-fold symmetry of EDIII. Pivoted by an RNA-mediated chaperone for the protein folding and assembly, CTB-EDIII of dengue serotype 1 (DV1) was successfully produced as soluble pentamers in an E. coli host with a high yield of about 28 mg/L. Immunization of mice with CTB-DV1EDIII elicited increased levels of neutralizing antibodies against infectious viruses compared to the control group immunized with DV1EDIII without CTB fusion. IgG isotype switching into a balanced Th1/Th2 response was also observed, probably triggered by the intrinsic adjuvant activity of CTB. Confirming the immune-enhancing potential of CTB in stabilizing the pentamer assembly of EDIII, this study introduces a low-cost bacterial production platform designed to augment the soluble production of subunit vaccine candidates, particularly those targeting flaviviruses.
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Affiliation(s)
- Jemin Sung
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea; (J.S.); (Y.-S.K.)
| | - Yucheol Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea; (J.S.); (Y.-S.K.)
| | - Young-Seok Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea; (J.S.); (Y.-S.K.)
| | - Jina Ahn
- The Interdisciplinary Graduate Program in Integrative Biotechnology & Translational Medicine, Yonsei University, Incheon 21983, Republic of Korea;
| | - Myung Hyun Sohn
- Department of Pediatrics, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea;
| | - Sanguine Byun
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Republic of Korea; (J.S.); (Y.-S.K.)
- POSTECH Biotech Center, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Baik-Lin Seong
- Department of Microbiology and Immunology, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
- Vaccine Innovative Technology ALliance (VITAL)-Korea, Yonsei University, Seoul 03722, Republic of Korea
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Medina-Carrasco D, Pupo D, González-Lodeiro LG, García LE, Martin AM, Huerta V. Activity of domain III-specific antibodies in early convalescence: A case study. Virology 2023; 587:109883. [PMID: 37757730 DOI: 10.1016/j.virol.2023.109883] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/15/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023]
Abstract
The Dengue virus complex (DENV), formed by four serotypes, constitutes the most important arbovirus affecting humans. The structural domain III of their envelope protein (DIII) elicits strongly neutralizing serotype-specific antibodies. Contrasting results have been obtained regarding their role in the serum neutralizing activity of infected patients. We used a DENV immune serum from a secondary infection to examine the impact of characterizing the anti-DIII antibody response after affinity purification with recombinant DIII proteins to eliminate potential interferences from the interactions with human plasma proteins and other anti-DENV antibodies. Total anti-DENV IgG repertoire and anti-DIIIE antibodies were compared in functionality. In early convalescence, reactivity of anti-DIII antibodies is serotype specific and exhibits the strongest reactivity with infecting serotypes. Purification of anti-DIII antibodies emphasizes the reactivity profile as compared to total IgG fraction and serum. Serotype-specificity of the virus neutralization activity correlated with the apparent kD of the binding to recombinant DIIIs.
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Affiliation(s)
- Danya Medina-Carrasco
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Dianne Pupo
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Luis G González-Lodeiro
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Lisandra E García
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Alejandro M Martin
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba
| | - Vivian Huerta
- Department of Systems Biology, Biomedical Research Direction, Center for Genetic Engineering and Biotechnology (CIGB), Havana, Cuba.
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Keat-Chuan Ng C, Linus-Lojikip S, Mohamed K, Hss AS. Application of medical information system to identify dengue outbreak factors: Insights from a hyperendemic city in Malaysia. Int J Med Inform 2023; 177:105162. [PMID: 37549500 DOI: 10.1016/j.ijmedinf.2023.105162] [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: 05/25/2023] [Revised: 07/10/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND Dengue is widespread globally, but it is more severe in hyperendemic regions where the virus, its vectors, and its human hosts naturally occur. The problem is particularly acute in cities, where outbreaks affect a large human population living in a wide array of socio-environmental conditions. Controlling outbreaks will rely largely on systematic data collection and analysis approaches to uncover nuances on a city-by-city basis due to the diversity of factors. OBJECTIVE The main objective of this study is to consolidate and analyse the dengue case dataset amassed by the e-Dengue web-based information system, developed by the Ministry of Health Malaysia, to improve our epidemiological understanding. METHODS We retrieved data from the e-Dengue system and integrated a total of 18,812 cases from 2012 to 2019 (8 years) with meteorological data, geoinformatics techniques, and socio-environmental observations to identify plausible factors that could have caused dengue outbreaks in Ipoh, a hyperendemic city in Malaysia. RESULTS The rainfall trend characterised by a linearity of R2 > 0.99, termed the "wet-dry steps", may be the unifying factor for triggering dengue outbreaks, though it is still a hypothesis that needs further validation. Successful mapping of the dengue "reservoir" contact zones and spill-over diffusion revealed socio-environmental factors that may be controlled through preventive measures. Age is another factor to consider, as the platelet and white blood cell counts in the "below 5" age group are much greater than in other age groups. CONCLUSIONS Our work demonstrates the novelty of the e-Dengue system, which can identify outbreak factors at high resolution when integrated with non-medical fields. Besides dengue, the techniques and insights laid out in this paper are valuable, at large, for advancing control strategies for other mosquito-borne diseases such as malaria, chikungunya, and zika in other hyperendemic cities elsewhere globally.
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Affiliation(s)
- Casey Keat-Chuan Ng
- School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Sharon Linus-Lojikip
- Clinical Research Centre, Hospital Raja Permaisuri Bainun, Ministry of Health, Jalan Raja Ashman Shah, 30450 Ipoh, Perak, Malaysia
| | - Khairunnisa Mohamed
- Vector-borne Disease Unit, Perak State Health Department, Jalan Koo Chong Kong, 30000 Ipoh, Perak, Malaysia
| | - Amar-Singh Hss
- Galen Centre for Health and Social Policy, C-13A-12, Scott Garden SOHO, 58000 Kuala Lumpur, Malaysia
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de Araújo RGS, Jorge DCP, Dorn RC, Cruz-Pacheco G, Esteva MLM, Pinho STR. Applying a multi-strain dengue model to epidemics data. Math Biosci 2023; 360:109013. [PMID: 37127090 DOI: 10.1016/j.mbs.2023.109013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/17/2023] [Accepted: 04/24/2023] [Indexed: 05/03/2023]
Abstract
Dengue disease transmission is a complex vector-borne disease, mainly due to the co-circulation of four serotypes of the virus. Mathematical models have proved to be a useful tool to understand the complexity of this disease. In this work, we extend the model studied by Esteva et al., 2003, originally proposed for two serotypes, to four circulating serotypes. Using epidemic data of dengue fever in Iquitos (Peru) and San Juan (Puerto Rico), we estimate numerically the co-circulation parameter values for selected outbreaks using a bootstrap method, and we also obtained the Basic Reproduction Number, R0, for each serotype, using both analytical calculations and numerical simulations. Our results indicate that the impact of co-circulation of serotypes in population dynamics of dengue infection is such that there is a reduced effect from DENV-3 to DENV-4 in comparison to no-cross effect for epidemics in Iquitos. Concerning San Juan epidemics, also comparing to no-cross effect, we also observed a reduced effect from the predominant serotype DENV-3 to both DENV-2 and DENV-1 epidemics neglecting the very small number of cases of DENV-4.
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Affiliation(s)
| | - Daniel C P Jorge
- Instituto de Física, Universidade Federal da Bahia, Salvador, Brazil; Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil.
| | - Rejane C Dorn
- Instituto de Física, Universidade Federal da Bahia, Salvador, Brazil.
| | - Gustavo Cruz-Pacheco
- Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Universidad Autónoma de México, Cuidad de México, Mexico.
| | - M Lourdes M Esteva
- Facultad de Ciências, Universidad Autónoma de México, Cuidad de México, Mexico.
| | - Suani T R Pinho
- Instituto de Física, Universidade Federal da Bahia, Salvador, Brazil; Instituto Nacional de Ciência e Tecnologia - Sistemas Complexos, Brazil.
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Wu B, Qi Z, Qian X. Recent Advancements in Mosquito-Borne Flavivirus Vaccine Development. Viruses 2023; 15:813. [PMID: 37112794 PMCID: PMC10143207 DOI: 10.3390/v15040813] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/21/2023] [Accepted: 03/21/2023] [Indexed: 04/29/2023] Open
Abstract
Lately, the global incidence of flavivirus infection has been increasing dramatically and presents formidable challenges for public health systems around the world. Most clinically significant flaviviruses are mosquito-borne, such as the four serotypes of dengue virus, Zika virus, West Nile virus, Japanese encephalitis virus and yellow fever virus. Until now, no effective antiflaviviral drugs are available to fight flaviviral infection; thus, a highly immunogenic vaccine would be the most effective weapon to control the diseases. In recent years, flavivirus vaccine research has made major breakthroughs with several vaccine candidates showing encouraging results in preclinical and clinical trials. This review summarizes the current advancement, safety, efficacy, advantages and disadvantages of vaccines against mosquito-borne flaviviruses posing significant threats to human health.
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Affiliation(s)
| | - Zhongtian Qi
- Department of Microbiology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, China;
| | - Xijing Qian
- Department of Microbiology, Faculty of Naval Medicine, Naval Medical University, Shanghai 200433, China;
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Chithiga A, Manimegalai K. Biosynthesis of zinc oxide nanoparticles using Indigofera tinctoria and their efficacy against dengue vector, Aedes aegypti (Diptera: Culicidae). Exp Parasitol 2023; 249:108513. [PMID: 36997017 DOI: 10.1016/j.exppara.2023.108513] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023]
Abstract
Dengue fever is a viral mosquito borne disease transmitted by day biting mosquito, Aedes aegypti. No medicine has been proven to be effective for the complete cure of dengue and mosquito control remains to be the only effective option. Increased cases of dengue contraction are being enormously reported worldwide every year. Thus, the urge for an effective measure remains a factor of major concern. In the present study, biosynthesized spherical-like structured zinc oxide (ZnO) nanoparticles using Indigofera tinctoria leaf extracts are employed as a mosquito controlling agent. The biosynthesized nanoparticles are characterized by UV-Vis, FTIR, FESEM, EDAX, XRD, Zeta Potential, and DLS analysis. The efficacy of the green synthesized ZnO nanoparticles were tested against different larval and pupal stages of A. aegypti. Further, it is established that a significant LC50 values of 4.030 ppm in first instar and 7.213 ppm in pupae of A. aegypti is due to the impact of synthesized ZnO. Histological studies confirmed that effective and destructive changes were observed in larval body tissues particularly in the fat cells and the midgut. Therefore, this study highlights the application of biosynthesized ZnO nanoparticles as a potential candidate for safe and eco-friendly agent against the dengue vector, A. aegypti.
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Choy RKM, Bourgeois AL, Ockenhouse CF, Walker RI, Sheets RL, Flores J. Controlled Human Infection Models To Accelerate Vaccine Development. Clin Microbiol Rev 2022; 35:e0000821. [PMID: 35862754 PMCID: PMC9491212 DOI: 10.1128/cmr.00008-21] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The timelines for developing vaccines against infectious diseases are lengthy, and often vaccines that reach the stage of large phase 3 field trials fail to provide the desired level of protective efficacy. The application of controlled human challenge models of infection and disease at the appropriate stages of development could accelerate development of candidate vaccines and, in fact, has done so successfully in some limited cases. Human challenge models could potentially be used to gather critical information on pathogenesis, inform strain selection for vaccines, explore cross-protective immunity, identify immune correlates of protection and mechanisms of protection induced by infection or evoked by candidate vaccines, guide decisions on appropriate trial endpoints, and evaluate vaccine efficacy. We prepared this report to motivate fellow scientists to exploit the potential capacity of controlled human challenge experiments to advance vaccine development. In this review, we considered available challenge models for 17 infectious diseases in the context of the public health importance of each disease, the diversity and pathogenesis of the causative organisms, the vaccine candidates under development, and each model's capacity to evaluate them and identify correlates of protective immunity. Our broad assessment indicated that human challenge models have not yet reached their full potential to support the development of vaccines against infectious diseases. On the basis of our review, however, we believe that describing an ideal challenge model is possible, as is further developing existing and future challenge models.
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Affiliation(s)
- Robert K. M. Choy
- PATH, Center for Vaccine Innovation and Access, Seattle, Washington, USA
| | - A. Louis Bourgeois
- PATH, Center for Vaccine Innovation and Access, Seattle, Washington, USA
| | | | - Richard I. Walker
- PATH, Center for Vaccine Innovation and Access, Seattle, Washington, USA
| | | | - Jorge Flores
- PATH, Center for Vaccine Innovation and Access, Seattle, Washington, USA
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Hour MJ, Chen Y, Lin CS, Baltina LA, Kan JY, Tsai YT, Kiu YT, Lai HC, Baltina LA, Petrova SF, Lin CW. Glycyrrhizic Acid Derivatives Bearing Amino Acid Residues in the Carbohydrate Part as Dengue Virus E Protein Inhibitors: Synthesis and Antiviral Activity. Int J Mol Sci 2022; 23:10309. [PMID: 36142222 PMCID: PMC9499324 DOI: 10.3390/ijms231810309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/23/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
Dengue virus (DENV) is one of the most geographically distributed mosquito-borne flaviviruses, like Japanese encephalitis virus (JEV), and Zika virus (ZIKV). In this study, a library of the known and novel Glycyrrhizic acid (GL) derivatives bearing amino acid residues or their methyl/ethyl esters in the carbohydrate part were synthesized and studied as DENV inhibitors in vitro using the cytopathic effect (CPE), viral infectivity and virus yield assays with DENV1 and DENV-2 in Vero E6 and A549 cells. Among the GL conjugates tested, compound hits GL-D-ValOMe 3, GL-TyrOMe 6, GL-PheOEt 11, and GL-LysOMe 21 were discovered to have better antiviral activity than GL, with IC50 values ranging from <0.1 to 5.98 μM on the in vitro infectivity of DENV1 and DENV2 in Vero E6 and A549 cells. Compound hits 3, 6, 11, and 21 had a concentration-dependent inhibition on the virus yield in Vero E6, in which GL-D-ValOMe 3 and GL-PheOEt 11 were the most active inhibitors of DENV2 yield. Meanwhile, the time-of-addition assay indicated that conjugates GL-D-ValOMe 3 and GL-PheOEt 11 exhibited a substantial decrease in the DENV2 attachment stage. Subsequently, chimeric single-round infectious particles (SRIPs) of DENV2 C-prM-E protein/JEV replicon and DENV2 prM-E/ZIKV replicon were utilized for the DENV envelope I protein-mediated attachment assay. GL conjugates 3 and 11 significantly reduced the attachment of chimeric DENV2 C-prM-E/JEV and DENV2 prM-E/ZIKV SRIPs onto Vero E6 cells in a concentration-dependent manner but did not impede the attachment of wild-type JEV CprME/JEV and ZIKV prM-E/ZIKV SRIPs, indicating the inhibition of Compounds 3 and 11 on DENV2 E-mediated attachment. Molecular docking data revealed that Compounds 3 and 11 have hydrophobic interactions within a hydrophobic pocket among the interfaces of Domains I, II, and the stem region of the DENV2 envelope (E) protein. These results displayed that Compounds 3 and 11 were the lead compounds targeting the DENV E protein. Altogether, our findings provide new insights into the structure−activity relationship of GL derivatives conjugated with amino acid residues and can be the new fundamental basis for the search and development of novel flavivirus inhibitors based on natural compounds.
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Affiliation(s)
- Mann-Jen Hour
- School of Pharmacy, China Medical University, Taichung 40402, Taiwan
| | - Yeh Chen
- Institute of New Drug Development, China Medical University, Taichung 40402, Taiwan
| | - Chen-Sheng Lin
- Division of Gastroenterology, Kuang Tien General Hospital, No. 117 Shatian Road, Shalu District, Taichung 43303, Taiwan
| | - Lidia A. Baltina
- Ufa Institute of Chemistry, Ufa Federal Research Centre of RAS, 71 Prospect Oktyabrya, 450054 Ufa, Russia
| | - Ju-Ying Kan
- Graduate Institute of Biomedical Sciences, China Medical University, 91, Hsueh-Shin Road, Taichung 40402, Taiwan
| | - Yan-Ting Tsai
- Department of Medical Laboratory Science and Biotechnology, China Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan
- Department of Medical Laboratory Science and Biotechnology, Asia University, 500 Lioufeng Road, Wufeng, Taichung 41354, Taiwan
| | - Yan-Tung Kiu
- Department of Medical Laboratory Science and Biotechnology, China Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan
| | - Hsueh-Chou Lai
- School of Chinese Medicine, China Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan
| | - Lia A. Baltina
- Ufa Institute of Chemistry, Ufa Federal Research Centre of RAS, 71 Prospect Oktyabrya, 450054 Ufa, Russia
| | - Svetlana F. Petrova
- Ufa Institute of Chemistry, Ufa Federal Research Centre of RAS, 71 Prospect Oktyabrya, 450054 Ufa, Russia
| | - Cheng-Wen Lin
- Graduate Institute of Biomedical Sciences, China Medical University, 91, Hsueh-Shin Road, Taichung 40402, Taiwan
- Department of Medical Laboratory Science and Biotechnology, China Medical University, 91 Hsueh-Shih Road, Taichung 40402, Taiwan
- Department of Medical Laboratory Science and Biotechnology, Asia University, 500 Lioufeng Road, Wufeng, Taichung 41354, Taiwan
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Endothelial Dysfunction, HMGB1, and Dengue: An Enigma to Solve. Viruses 2022; 14:v14081765. [PMID: 36016387 PMCID: PMC9414358 DOI: 10.3390/v14081765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Dengue is a viral infection caused by dengue virus (DENV), which has a significant impact on public health worldwide. Although most infections are asymptomatic, a series of severe clinical manifestations such as hemorrhage and plasma leakage can occur during the severe presentation of the disease. This suggests that the virus or host immune response may affect the protective function of endothelial barriers, ultimately being considered the most relevant event in severe and fatal dengue pathogenesis. The mechanisms that induce these alterations are diverse. It has been suggested that the high mobility group box 1 protein (HMGB1) may be involved in endothelial dysfunction. This non-histone nuclear protein has different immunomodulatory activities and belongs to the alarmin group. High concentrations of HMGB1 have been detected in patients with several infectious diseases, including dengue, and it could be considered as a biomarker for the early diagnosis of dengue and a predictor of complications of the disease. This review summarizes the main features of dengue infection and describes the known causes associated with endothelial dysfunction, highlighting the involvement and possible relationship between HMGB1 and DENV.
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Yoon E, Kim D, Jeon H, Kwon Y, Jang Y, Kim S, Hwang KY. Severe acute respiratory syndrome coronavirus 2 variants-Possibility of universal vaccine design: A review. Comput Struct Biotechnol J 2022; 20:3533-3544. [PMID: 35765543 PMCID: PMC9221512 DOI: 10.1016/j.csbj.2022.06.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/18/2022] [Indexed: 11/28/2022] Open
Abstract
Both novel and conventional vaccination strategies have been implemented worldwide since the onset of coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Despite various medical advances in the treatment and prevention of the spread of this contagious disease, it remains a major public health threat with a high mortality rate. As several lethal SARS-CoV-2 variants continue to emerge, the development of several vaccines and medicines, each with certain advantages and disadvantages, is underway. Additionally, many modalities are at various stages of research and development or clinical trials. Here, we summarize emerging SARS-CoV-2 variants, including delta, omicron, and "stealth omicron," as well as available oral drugs for COVID-19. We also discuss possible antigen candidates other than the receptor-binding domain protein for the development of a universal COVID-19 vaccine. The present review will serve as a helpful resource for future vaccine and drug development to combat COVID-19.
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Key Words
- ACE2, angiotensin-converting enzyme 2
- Antigen
- COVID-19
- COVID-19, coronavirus disease 2019
- Coronavirus
- FDA, Food and Drug Administration
- FP, fusion peptide
- HE, hemagglutinin-esterase
- HIV, human immunodeficiency virus
- HR1, heptad repeat 1
- HR2, heptad repeat 2
- Oral drug
- RBD, receptor binding domain
- Receptor-binding domain
- S1-CTD, S1 C-terminal domain
- S1-NTD, S1 N-terminal domain
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- TMPRSS2, transmembrane protease serine 2
- Universal vaccine
- mAbs, monoclonal antibodies
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Affiliation(s)
- Eunhye Yoon
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
| | - Dahyun Kim
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
| | - Hyeeun Jeon
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
| | - Yejin Kwon
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
| | - Yejin Jang
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
| | - Sulhee Kim
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
- Institute of Bioresource, Korea University, Seoul 02841, South Korea
| | - Kwang Yeon Hwang
- Division of Biotechnology, College of Life Sciences and Biotechnology, Seoul 02841, South Korea
- Institute of Bioresource, Korea University, Seoul 02841, South Korea
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Rodríguez-Aguilar ED, Martínez-Barnetche J, Juárez-Palma L, Alvarado-Delgado A, González-Bonilla CR, Rodríguez MH. Genetic diversity and spatiotemporal dynamics of DENV-1 and DENV-2 infections during the 2012-2013 outbreak in Mexico. Virology 2022; 573:141-150. [PMID: 35779336 DOI: 10.1016/j.virol.2022.06.011] [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: 04/29/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 10/18/2022]
Abstract
Dengue fever is caused by four related dengue virus serotypes, DENV-1 to DENV-4, where each serotype comprises distinct genotypes and lineages. The last major outbreak in Mexico occurred during 2012 and 2013, when 112,698 confirmed cases were reported (DENV-1 and DENV-2 were predominant). Following partial E, NS2A and NS5 gene sequencing, based on the virus genome variability, we analyzed 396 DENV-1 and 248 DENV-2 gene sequences from serum samples from dengue acute clinical cases from 13 Mexican states, Mutations were identified, and their genetic variability estimated, along with their evolutionary relationship with DENV sequences sampled globally. DENV-1 genotype V and DENV-2 Asian-American genotype V were the only genotypes circulating during the outbreak. Mutations in NS2A and NS5 proteins were widely disseminated and suggested local emergence of new lineages. Phylogeographic analysis suggested viral spread occurred from coastal regions, and tourist destinations, such as Yucatan and Quintana Roo, which played important roles in disseminating these lineages.
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Affiliation(s)
- Eduardo D Rodríguez-Aguilar
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad 655, Cuernavaca, 62100, Mexico.
| | - Jesús Martínez-Barnetche
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad 655, Cuernavaca, 62100, Mexico.
| | - Lilia Juárez-Palma
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad 655, Cuernavaca, 62100, Mexico.
| | - Alejandro Alvarado-Delgado
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad 655, Cuernavaca, 62100, Mexico.
| | - Cesar R González-Bonilla
- Universidad Nacional Autónoma de México and Instituto Mexicano del Seguro Social, Mexico City, 04510, Mexico.
| | - Mario H Rodríguez
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Av. Universidad 655, Cuernavaca, 62100, Mexico.
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13
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Vector-Borne Viral Diseases as a Current Threat for Human and Animal Health—One Health Perspective. J Clin Med 2022; 11:jcm11113026. [PMID: 35683413 PMCID: PMC9181581 DOI: 10.3390/jcm11113026] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 12/15/2022] Open
Abstract
Over the last decades, an increase in the emergence or re-emergence of arthropod-borne viruses has been observed in many regions. Viruses such as dengue, yellow fever, or zika are a threat for millions of people on different continents. On the other hand, some arboviruses are still described as endemic, however, they could become more important in the near future. Additionally, there is a group of arboviruses that, although important for animal breeding, are not a direct threat for human health. Those include, e.g., Schmallenberg, bluetongue, or African swine fever viruses. This review focuses on arboviruses and their major vectors: mosquitoes, ticks, biting midges, and sandflies. We discuss the current knowledge on arbovirus transmission, ecology, and methods of prevention. As arboviruses are a challenge to both human and animal health, successful prevention and control are therefore only possible through a One Health perspective.
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14
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Gupta S, Kumar A. Design of an Epitope-Based Peptide Vaccine Against Dengue Virus Isolate from Eastern Uttar Pradesh, India. Int J Pept Res Ther 2022; 28:91. [PMID: 35463186 PMCID: PMC9014403 DOI: 10.1007/s10989-022-10402-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Siddharth Gupta
- Department of Biotechnology, Faculty of Engineering and Technology, Rama University, G.T. Road, Kanpur, 209217 India
| | - Ajay Kumar
- Department of Biotechnology, Faculty of Engineering and Technology, Rama University, G.T. Road, Kanpur, 209217 India
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15
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Wang WH, Urbina AN, Lin CY, Yang ZS, Assavalapsakul W, Thitithanyanont A, Lu PL, Chen YH, Wang SF. Targets and strategies for vaccine development against dengue viruses. Biomed Pharmacother 2021; 144:112304. [PMID: 34634560 DOI: 10.1016/j.biopha.2021.112304] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 10/20/2022] Open
Abstract
Dengue virus (DENV) is a global health threat causing about half of the worldwide population to be at risk of infection, especially the people living in tropical and subtropical area. Although the dengue disease caused by dengue virus (DENV) is asymptomatic and self-limiting in most people with first infection, increased severe dengue symptoms may be observed in people with heterotypic secondary DENV infection. Since there is a lack of specific antiviral medication, the development of dengue vaccines is critical in the prevention and control this disease. Several targets and strategies in the development of dengue vaccine have been demonstrated. Currently, Dengvaxia, a live-attenuated chimeric yellow-fever/tetravalent dengue vaccine (CYD-TDV) developed by Sanofi Pasteur, has been licensed and approved for clinical use in some countries. However, this vaccine has demonstrated low efficacy in children and dengue-naïve individuals and also increases the risk of severe dengue in young vaccinated recipients. Accordingly, many novel strategies for the dengue vaccine are under investigation and development. Here, we conducted a systemic literature review according to PRISMA guidelines to give a concise overview of various aspects of the vaccine development process against DENVs, mainly targeting five potential strategies including live attenuated vaccine, inactivated virus vaccine, recombinant subunit vaccine, viral-vector vaccine, and DNA vaccine. This study offers the comprehensive view of updated information and current progression of immunogen selection as well as strategies of vaccine development against DENVs.
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Affiliation(s)
- Wen-Hung Wang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical, University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Aspiro Nayim Urbina
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chih-Yen Lin
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Zih-Syuan Yang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wanchai Assavalapsakul
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Arunee Thitithanyanont
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand
| | - Po-Liang Lu
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical, University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yen-Hsu Chen
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical, University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Sheng-Fan Wang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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16
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Hollmann A, Cardoso NP, Espeche JC, Maffía PC. Review of antiviral peptides for use against zoonotic and selected non-zoonotic viruses. Peptides 2021; 142:170570. [PMID: 34000327 PMCID: PMC8120785 DOI: 10.1016/j.peptides.2021.170570] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 04/23/2021] [Accepted: 05/04/2021] [Indexed: 12/15/2022]
Abstract
Viruses remain one of the leading causes of animal and human disease. Some animal viral infections spread sporadically to human populations, posing a serious health risk. Particularly the emerging viral zoonotic diseases such as the novel, zoonotic coronavirus represent an actual challenge for the scientific and medical community. Besides human health risks, some animal viral infections, although still not zoonotic, represent important economic loses to the livestock industry. Viral infections pose a genuine concern for which there has been an increasing interest for new antiviral molecules. Among these novel compounds, antiviral peptides have been proposed as promising therapeutic options, not only for the growing body of evidence showing hopeful results but also due to the many adverse effects of chemical-based drugs. Here we review the current progress, key targets and considerations for the development of antiviral peptides (AVPs). The review summarizes the state of the art of the AVPs tested in zoonotic (coronaviruses, Rift Valley fever viruses, Eastern Equine Encephalitis Virus, Dengue and Junín virus) and also non-zoonotic farm animal viruses (avian and cattle viruses). Their molecular target, amino acid sequence and mechanism of action are summarized and reviewed. Antiviral peptides are currently on the cutting edge since they have been reported to display anti-coronavirus activity. Particularly, the review will discuss the specific mode of action of AVPs that specifically inhibit the fusion of viral and host-cell membranes for SARS-CoV-2, showing in detail some important features of the fusion inhibiting peptides that target the spike protein of these risky viruses.
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Affiliation(s)
- Axel Hollmann
- Laboratorio de Compuestos Bioactivos, Centro de Investigaciones en Biofísica Aplicada y Alimentos (CIBAAL), CONICET, Universidad Nacional de Santiago del Estero, RN 9, Km 1125, 4206, Santiago del Estero, Argentina; Laboratorio de Microbiología Molecular, Instituto de Microbiología Básica y Aplicada, Universidad Nacional de Quilmes, Roque Sáenz Peña 352, B1876BXD, Bernal, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina
| | - Nancy P Cardoso
- Instituto de Virología e Innovaciones Tecnológicas, IVIT - Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina
| | - Juan C Espeche
- Laboratorio de Compuestos Bioactivos, Centro de Investigaciones en Biofísica Aplicada y Alimentos (CIBAAL), CONICET, Universidad Nacional de Santiago del Estero, RN 9, Km 1125, 4206, Santiago del Estero, Argentina
| | - Paulo C Maffía
- Instituto de Biotecnología, Universidad Nacional de Hurlingham, Av. Vergara 2222, Villa Tesei, Hurlingham, B1688GEZ, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina.
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17
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Carbone DA, Pellone P, Lubritto C, Ciniglia C. Evaluation of Microalgae Antiviral Activity and Their Bioactive Compounds. Antibiotics (Basel) 2021; 10:746. [PMID: 34202941 PMCID: PMC8234452 DOI: 10.3390/antibiotics10060746] [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: 04/26/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/02/2023] Open
Abstract
During the last year, science has been focusing on the research of antivirally active compounds overall after the SARS-CoV-2 pandemic, which caused a great amount of deaths and the downfall of the economy in 2020. Photosynthetic organisms such as microalgae are known to be a reservoir of bioactive secondary metabolites; this feature, coupled with the possibility of achieving very high biomass levels without excessive energetic expenses, make microalgae worthy of attention in the search for new molecules with antiviral effects. In this work, the antiviral effects of microalgae against some common human or animal viruses were considered, focusing our attention on some possible effects against SARS-CoV-2. We summed up the data from the literature on microalgae antiviral compounds, from the most common ones, such as lectins, polysaccharides and photosynthetic pigments, to the less known ones, such as unidentified proteins. We have discussed the effects of a microalgae-based genetic engineering approach against some viral diseases. We have illustrated the potential antiviral benefits of a diet enriched in microalgae.
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Affiliation(s)
- Dora Allegra Carbone
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy; (C.L.); (C.C.)
| | - Paola Pellone
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy;
| | - Carmine Lubritto
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy; (C.L.); (C.C.)
- National Institute of Nuclear Physics, Complesso Universitario di Monte S, 80126 Naples, Italy
| | - Claudia Ciniglia
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania “Luigi Vanvitelli”, Via Vivaldi 43, 81100 Caserta, Italy; (C.L.); (C.C.)
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18
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D E, Hemavathi M, Deenadhayalan N, Suman T, Sathiyapriya R. A novel approach for synthesis of silver nanoparticles using Pila virens shell and its mosquito larvicidal activity. Toxicol Rep 2021; 8:1248-1254. [PMID: 34195016 PMCID: PMC8233167 DOI: 10.1016/j.toxrep.2021.06.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 06/06/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022] Open
Abstract
Mosquito act as a vector for variety of deadly diseases. In this study, larvicide activity was investigated in relation to Aedes aegypti (A. aegypti) and Culex quinquefasciatus (C. quinquefasciatus) of synthesised silver nanoparticles (AgNPs) of the Pila virens (P.virens) shell extract. The characterization techniques UV-vis spectral, Fourier transforms infrared spectroscopy (FTIR),High Resonance Scanning electron microscope (HR-SEM) analysis, X-ray diffraction studies (XRD), High Resonance-Transmission electron microscopy (HR-TEM) used to characterize biosynthesized AgNPs. UV-vis, absorption showed peaks of 450 nm for the biosynthesised AgNPs, SEM observed spherical shaped particles of 25.9-28.9 nm in size and the XRD pattern shows the synthesized AgNPs fcc structure. FTIR investigation shown that the esters, carboxylic acid and ether as functional groups have been intricate in the reduction of metal ions. The larvicidal efficacy of synthesized AgNPs towards a larvae of A. aegypti LC50and LC90 value of (37.87 and 132.86 ppm) and C. quinquefasciatus was (14.70 and 28.96 ppm) respectively. The synthesized AgNPs of P. virens confirmed highest mortality towards larvae of and A. aegypti and C. quinquefasciatus.
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Affiliation(s)
- Elumalai D
- PG. Department of Zoology, Pachaiyappas College for Men, Kanchipuram, 631501, Tamil Nadu, India
| | - M Hemavathi
- Department of Zoology, Arignar Anna Govt. Arts & Science College for Women, Walajapet, Vellore, 632513, Tamil Nadu, India
| | - N Deenadhayalan
- PG. Department of Zoology, Pachaiyappas College for Men, Kanchipuram, 631501, Tamil Nadu, India
| | - T.Y. Suman
- Graduate School of FEED of Eco-Friendly Offshore Structure, Changwon National University, Changwon, Gyeongsangnamdo, 51140, Republic of Korea
- School of Civil, Environmental and Chemical Engineering, Changwon National University, Changwon, Gyeongsangnamdo, 51140, Republic of Korea
| | - R Sathiyapriya
- Department of Physics, Mahendra Engineering College, Namakkal, 637503, Tamil Nadu, India
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19
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Deval H, Behera SP, Agrawal A, Singh R, Misra B, Janardhan V, Patil G, Sah K, Kumar N, Singh R, Bondre VP. Genetic characterization of dengue virus serotype 2 isolated from dengue fever outbreaks in eastern Uttar Pradesh and western Bihar, India. J Med Virol 2021; 93:3322-3329. [PMID: 32633814 DOI: 10.1002/jmv.26239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 01/23/2023]
Abstract
Dengue (DEN) is the most common cause of mosquito-borne endemic viral diseases in the tropical and subtropical countries. DEN outbreaks associated with multiple dengue virus (DV) serotypes have been regularly reported in different parts of India. This study was done during DEN outbreaks in 2015 to 2016 in UP and Bihar where DEN-2 was found as the only prevalent serotype. DV-2 was the only serotype amplified in serotype-specific reverse-transcription polymerase chain reaction from sera of 210 (65.21%) out of 322 DV NS1 antigen-positive patients. Further genetic analysis based on full-length envelope (E) protein sequence derived from patient's sera as well as DV isolate showed the circulation of lineages I and III of DV-2 cosmopolitan genotype during 2015 and lineage II during 2016. Finally, the phylogenetic analysis using the E gene sequence revealed that these DV-2 strains have a close genetic relationship with the recently reported DV-2 genotypes from DEN outbreaks reported from different parts of north India. These results showed the circulation of cosmopolitan genotype of DV-2 in eastern Uttar Pradesh and western Bihar, India. The genetic database generated on circulating DV strains in this study will be useful as reference for disease surveillance and strengthening laboratory diagnosis protocols.
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Affiliation(s)
- Hirawati Deval
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Sthita P Behera
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Awdhesh Agrawal
- Division of Pathology, Gorakhnath Hospital, Gorakhpur, Uttar Pradesh, India
| | - Rajeev Singh
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Brijranjan Misra
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Vanka Janardhan
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Gajanan Patil
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Kamlesh Sah
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Niraj Kumar
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Ravishankar Singh
- Molecular Virology, National Institute of Virology (Gorakhpur Unit), Gorakhpur, Uttar Pradesh, India
| | - Vijay P Bondre
- Encephalitis Group, ICMR-National Institute of Virology, Microbial Containment Complex, Pune, Maharashtra, India
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20
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Chouchane L, Grivel JC, Farag EABA, Pavlovski I, Maacha S, Sathappan A, Al-Romaihi HE, Abuaqel SW, Ata MMA, Chouchane AI, Remadi S, Halabi N, Rafii A, Al-Thani MH, Marr N, Subramanian M, Shan J. Dromedary camels as a natural source of neutralizing nanobodies against SARS-CoV-2. JCI Insight 2021; 6:145785. [PMID: 33529170 PMCID: PMC8021111 DOI: 10.1172/jci.insight.145785] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 01/27/2021] [Indexed: 12/12/2022] Open
Abstract
The development of prophylactic and therapeutic agents for coronavirus disease 2019 (COVID-19) is a current global health priority. Here, we investigated the presence of cross-neutralizing antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in dromedary camels that were Middle East respiratory syndrome coronavirus (MERS-CoV) seropositive but MERS-CoV free. The tested 229 dromedaries had anti–MERS-CoV camel antibodies with variable cross-reactivity patterns against SARS-CoV-2 proteins, including the S trimer and M, N, and E proteins. Using SARS-CoV-2 competitive immunofluorescence immunoassays and pseudovirus neutralization assays, we found medium-to-high titers of cross-neutralizing antibodies against SARS-CoV-2 in these animals. Through linear B cell epitope mapping using phage immunoprecipitation sequencing and a SARS-CoV-2 peptide/proteome microarray, we identified a large repertoire of Betacoronavirus cross-reactive antibody specificities in these dromedaries and demonstrated that the SARS-CoV-2–specific VHH antibody repertoire is qualitatively diverse. This analysis revealed not only several SARS-CoV-2 epitopes that are highly immunogenic in humans, including a neutralizing epitope, but also epitopes exclusively targeted by camel antibodies. The identified SARS-CoV-2 cross-neutralizing camel antibodies are not proposed as a potential treatment for COVID-19. Rather, their presence in nonimmunized camels supports the development of SARS-CoV-2 hyperimmune camels, which could be a prominent source of therapeutic agents for the prevention and treatment of COVID-19.
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Affiliation(s)
- Lotfi Chouchane
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, New York, USA.,Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar.,Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
| | | | | | - Igor Pavlovski
- Deep Phenotyping Core, Research Branch, Sidra Medicine, Doha, Qatar
| | - Selma Maacha
- Deep Phenotyping Core, Research Branch, Sidra Medicine, Doha, Qatar
| | | | - Hamad Eid Al-Romaihi
- Department of Communicable Diseases Control, Ministry of Public Health, Doha, Qatar
| | - Sirin Wj Abuaqel
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, New York, USA.,Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar.,Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
| | | | | | | | - Najeeb Halabi
- Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar.,Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Arash Rafii
- Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar.,Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
| | | | - Nico Marr
- Department of Immunology, Research Branch, Sidra Medicine, Doha, Qatar
| | - Murugan Subramanian
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, New York, USA.,Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar
| | - Jingxuan Shan
- Genetic Intelligence Laboratory, Weill Cornell Medicine-Qatar, Qatar Foundation, Doha, Qatar.,Department of Genetic Medicine, Weill Cornell Medicine, New York, New York, USA
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21
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Gunathilaka UMTM, de Silva WAPP, Dunuweera SP, Rajapakse RMG. Effect of morphology on larvicidal activity of chemically synthesized zinc oxide nanoparticles against mosquito vectors. RSC Adv 2021; 11:8857-8866. [PMID: 35423367 PMCID: PMC8695257 DOI: 10.1039/d1ra00014d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 02/18/2021] [Indexed: 01/12/2023] Open
Abstract
We report the larvicidal effects of four different morphologies of zinc oxide nanoparticles (ZnO NPs) [star-shaped (S), needle-like (N), plate-like (P) and cubical (C)] on larvae of Aedes albopictus and Anopheles vagus; the mosquitoes causing dengue fever and malaria, respectively. The nanoparticles were characterized by several analytical techniques, and their sizes and shapes were determined. Second instar larvae of the two types of mosquitoes were exposed to several concentrations of nanoparticles (25 mg L-1, 50 mg L-1, 75 mg L-1, 100 mg L-1) at 25 ± 2 °C and 84 ± 5% R.H, separately, for each morphology. Larval mortality was reported at 24 h intervals up to 21 days. The resulting LC50 for Aedes albopictus were, respectively, 38.90 mg L-1, 47.53 mg L-1, 68.38 mg L-1, 50.24 mg L-1 for S-, N-, P- and C-shaped nanoparticles. The LC50 of Anopheles vagus is lower (LC50 4.78 mg L-1, 6.51 mg L-1, 13.64 mg L-1, 10.47 mg L -1 ), respectively, for S-, N-, P- and C-shaped nanoparticles indicating that the nanoparticles are more toxic to Anopheles vagus larvae. The highest larvicidal effect was obtained from star-shaped nanoparticles [Aedes albopictus (38.90 mg L-1) on Anopheles vagus (4.78 mg L-1)], and the lowest was shown by the plate-like nanoparticles [Aedes albopictus (68.38 mg L-1), Anopheles vagus (13.64 mg L-1)]. The rate of development of surviving mosquito larvae was retarded when exposed to ZnO nanoparticles suggesting the possibility for these nanoparticles to kill and delay the growth of Aedes albopictus and Anopheles vagus larvae.
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Affiliation(s)
- U M T M Gunathilaka
- Department of Chemistry, University of Peradeniya Peradeniya 20400 Sri Lanka
- Department of Zoology, University of Peradeniya Peradeniya 20400 Sri Lanka
- Postgraduate Institute of Science, University of Peradeniya Peradeniya 20400 Sri Lanka
| | - W A P P de Silva
- Department of Zoology, University of Peradeniya Peradeniya 20400 Sri Lanka
- Postgraduate Institute of Science, University of Peradeniya Peradeniya 20400 Sri Lanka
| | - S P Dunuweera
- Department of Chemistry, University of Peradeniya Peradeniya 20400 Sri Lanka
- Postgraduate Institute of Science, University of Peradeniya Peradeniya 20400 Sri Lanka
| | - R M G Rajapakse
- Department of Chemistry, University of Peradeniya Peradeniya 20400 Sri Lanka
- Postgraduate Institute of Science, University of Peradeniya Peradeniya 20400 Sri Lanka
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22
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Antiviral Potential of Algal Metabolites-A Comprehensive Review. Mar Drugs 2021; 19:md19020094. [PMID: 33562153 PMCID: PMC7914423 DOI: 10.3390/md19020094] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 12/11/2022] Open
Abstract
Historically, algae have stimulated significant economic interest particularly as a source of fertilizers, feeds, foods and pharmaceutical precursors. However, there is increasing interest in exploiting algal diversity for their antiviral potential. Here, we present an overview of 50-years of scientific and technological developments in the field of algae antivirals. After bibliometric analysis of 999 scientific references, a survey of 16 clinical trials and analysis of 84 patents, it was possible to identify the dominant algae, molecules and viruses that have been shaping and driving this promising field of research. A description of the most promising discoveries is presented according to molecule class. We observed a diverse range of algae and respective molecules displaying significant antiviral effects against an equally diverse range of viruses. Some natural algae molecules, like carrageenan, cyanovirin or griffithsin, are now considered prime reference molecules for their outstanding antiviral capacity. Crucially, while many algae antiviral applications have already reached successful commercialization, the large spectrum of algae antiviral capacities already identified suggests a strong potential for future expansion of this field.
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Utomo DIS, Pambudi S, Sjatha F, Kato T, Park EY. Production of dengue virus-like particles serotype-3 in silkworm larvae and their ability to elicit a humoral immune response in mice. AMB Express 2020; 10:147. [PMID: 32804287 PMCID: PMC7431508 DOI: 10.1186/s13568-020-01087-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/11/2020] [Indexed: 02/08/2023] Open
Abstract
To develop monovalent dengue virus-like particle for serotype 3 (DENV-LP/3), we prepared and expressed two structural polyprotein constructs using silkworm and Bm5 cells: DENV-3 Capsid-premembrane-envelope (DENV-3CprME) and premembrane-envelope (DENV-3prME). The expressed PA-tagged 3CprME and 3prME polypeptides were partially purified by PA-tag affinity chromatography and had molecular weights of 85 and 75 kDa, respectively. Expressed proteins were separately verified using the following primary antibodies: the anti-PA tag antibody, DENV premembrane polyclonal antibody, and DENV envelope polyclonal antibody. Transmission electron microscopy revealed that these DENV-3CprME and 3prME formed rough, spherical DENV-LPs (DENV-LP/3CprME and DENV-LP/3prME), respectively, with a diameter of 30–55 nm. The heparin-binding assay demonstrated that these DENV-LPs contained the envelope protein domain III on their surfaces. Both DENV-LPs showed an affinity to sera from human dengue patients and immunized mice. Immunization of mice with DENV-LP/3prME significantly induced the level of antibodies compared with DENV-LP/3CprME. These results indicate that DENV-LP/3prME is suitable as a vaccine candidate compared with DENV-LP/3CprME.
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Nguyen AA, Habiballah SB, Platt CD, Geha RS, Chou JS, McDonald DR. Immunoglobulins in the treatment of COVID-19 infection: Proceed with caution! Clin Immunol 2020; 216:108459. [PMID: 32418917 PMCID: PMC7211658 DOI: 10.1016/j.clim.2020.108459] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 05/05/2020] [Indexed: 12/12/2022]
Abstract
The COVID-19 pandemic is one of the greatest infectious challenges in recent history. Presently, few treatment options exist and the availability of effective vaccines is at least one year away. There is an urgent need to find currently available, effective therapies in the treatment of patients with COVID-19 infection. In this review, we compare and contrast the use of intravenous immunoglobulin and hyperimmune globulin in the treatment of COVID-19 infection.
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MESH Headings
- Adaptive Immunity/drug effects
- Angiotensin-Converting Enzyme 2
- Antibody-Dependent Enhancement/drug effects
- Betacoronavirus/drug effects
- Betacoronavirus/immunology
- Betacoronavirus/pathogenicity
- COVID-19
- Coronavirus Infections/drug therapy
- Coronavirus Infections/epidemiology
- Coronavirus Infections/immunology
- Coronavirus Infections/therapy
- Coronavirus Infections/virology
- Cytokine Release Syndrome/etiology
- Cytokine Release Syndrome/immunology
- Cytokine Release Syndrome/pathology
- Cytokine Release Syndrome/prevention & control
- Gene Expression
- Humans
- Immunity, Innate/drug effects
- Immunization, Passive/adverse effects
- Immunization, Passive/methods
- Immunoglobulins, Intravenous/administration & dosage
- Immunoglobulins, Intravenous/adverse effects
- Immunologic Factors/administration & dosage
- Immunologic Factors/adverse effects
- Molecular Targeted Therapy
- Pandemics
- Peptidyl-Dipeptidase A/genetics
- Peptidyl-Dipeptidase A/immunology
- Pneumonia, Viral/drug therapy
- Pneumonia, Viral/epidemiology
- Pneumonia, Viral/immunology
- Pneumonia, Viral/virology
- SARS-CoV-2
- Spike Glycoprotein, Coronavirus/genetics
- Spike Glycoprotein, Coronavirus/immunology
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/virology
- COVID-19 Serotherapy
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Affiliation(s)
- Alan A Nguyen
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America
| | - Saddiq B Habiballah
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America
| | - Craig D Platt
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America
| | - Raif S Geha
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America
| | - Janet S Chou
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America
| | - Douglas R McDonald
- Division of Immunology, Boston Children's Hospital, Boston, MA, United States of America.
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Helvecio E, Romão TP, de Carvalho-Leandro D, de Oliveira IF, Cavalcanti AEHD, Reimer L, de Paiva Cavalcanti M, de Oliveira APS, Paiva PMG, Napoleão TH, Wallau GL, de Melo Neto OP, Melo-Santos MAV, Ayres CFJ. Polymorphisms in GSTE2 is associated with temephos resistance in Aedes aegypti. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 165:104464. [PMID: 32359546 DOI: 10.1016/j.pestbp.2019.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 09/10/2019] [Accepted: 10/13/2019] [Indexed: 06/11/2023]
Abstract
The glutathione S-transferases (GSTs) are enzymes involved in several distinct biological processes. In insects, the GSTs, especially delta and epsilon classes, play a key role in the metabolism of xenobiotics used to control insect populations. Here, we investigated its potential role in temephos resistance, examining the GSTE2 gene from susceptible (RecL) and resistant (RecR) strains of the mosquito Aedes aegypti, vector for several pathogenic arboviruses. Total GST enzymatic activity and the GSTE2 gene expression profile were evaluated, with the GSTE2 cDNA and genomic loci sequenced from both strains. Recombinant GSTE2 and mutants were produced in a heterologous expression system and assayed for enzyme kinetic parameters. These proteins also had their 3D structure predicted through molecular modeling. Our results showed that RecR has a profile of total GST enzymatic activity higher than RecL, with the expression of the GSTE2 gene in resistant larvae increasing six folds. Four exclusive RecR mutations were observed (L111S, I150V, E178A and A198E), which were absent in the laboratory susceptible strains. The enzymatic activity of the recombinant GSTE2 showed different kinetic parameters, with the GSTE2 RecR showing an enhanced ability to metabolize its substrate. The I150V mutation was shown to induce significant changes in catalytic parameters and a 3D modeling of GSTE2 mapped two of the RecR changes (L111S and I150V) near the enzyme's catalytic pocket, also implying an impact on its catalytic activity. Our results reinforce a potential role for GSTE2 in the metabolic resistance phenotype while contributing to the understanding of the molecular basis for the resistance mechanism.
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Affiliation(s)
- Elisama Helvecio
- Department of Entomology, Instituto Aggeu Magalhães, FIOCRUZ, Recife, PE 50740-465, Brazil
| | - Tatiany Patrícia Romão
- Department of Entomology, Instituto Aggeu Magalhães, FIOCRUZ, Recife, PE 50740-465, Brazil.
| | | | | | | | - Lisa Reimer
- Department of Vector Biology, Liverpool School of Tropical Medicine, United Kingdom
| | | | | | | | | | - Gabriel Luz Wallau
- Department of Entomology, Instituto Aggeu Magalhães, FIOCRUZ, Recife, PE 50740-465, Brazil
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Alkaff AH, Saragih M, Fardiansyah MA, Tambunan USF. Role of Immunoinformatics in Accelerating Epitope-Based Vaccine Development against Dengue Virus. Open Biochem J 2020. [DOI: 10.2174/1874091x02014010009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Dengue Fever (DF) has emerged as a significant public health problem of international concern with its high prevalence in the tropic and subtropical regions. Dengue Virus (DENV), which is the cause of DF, consists of four serotypes of antigenically distinct viruses. The immense variation and limited identity similarity at the amino acid level lead to a problematic challenge in the development of an efficacious vaccine. Fortunately, the extensively available immunological data, the advance in antigenic peptide prediction, and the incorporation of molecular docking and dynamics simulation in immunoinformatics have directed the vaccine development towards the rational design of the epitope-based vaccine. Here, we point out the current state of dengue epidemiology and the recent development in vaccine development. Subsequently, we provide a systematic review of our validated method and tools for B- and T-cell epitope prediction as well as the use of molecular docking and dynamics in evaluating epitope affinity and stability in the discovery of a new tetravalent dengue vaccine through computational epitope-based vaccine design.
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Damodaran L, de Bernardi Schneider A, Chen S, Janies D. Evolution of endemic and sylvatic lineages of dengue virus. Cladistics 2020; 36:115-128. [PMID: 34618965 DOI: 10.1111/cla.12402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2019] [Indexed: 11/30/2022] Open
Abstract
Recent disease outbreaks have raised awareness of tropical pathogens, especially mosquito-borne viruses. Dengue virus (DENV) is a widely studied mammalian pathogen transmitted by various species of mosquito in the genus Aedes, especially Aedes aegypti and Aedes albopictus. The prevailing view of the research community is that endemic viral lineages that cause epidemics of DENV in humans have emerged over time from sylvatic viral lineages, which persist in wild, non-human primates. These notions have been examined by researchers through phylogenetic analyses of the envelope gene (E) from the four serotypes of DENV (serotypes DENV-1 to DENV-4). In these previous reports, researchers used visual inspection of a phylogeny in order to assert that sylvatic lineages lead to endemic clades. In making this assertion, these researchers also reasserted the model of periodic sylvatic to endemic disease outbreaks. Since that study, there has been a significant increase in data both in terms of metadata (e.g., place and host of isolation) and genetic sequences of DENV. Here, we re-examine the model of sylvatic to endemic shifts in viral lineages through a phylogenetic tree search and character evolution study of metadata on the tree. We built a dataset of nucleotide sequences for 188 isolates of DENV that have metadata on sylvatic or endemic sampling along with three orthologous sequences from West Nile virus as the outgroup for the phylogenetic analysis. In contrast to previous research, we find that there are several shifts from endemic to sylvatic lineages as well as sylvatic to endemic lineages, indicating a much more dynamic model of evolution. We propose that a model that allows oscillation between sylvatic and endemic hosts better captures the dynamics of DENV transmission.
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Affiliation(s)
- Lambodhar Damodaran
- Department of Bioinformatics and Genomics, College of Computing and Informatics, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, 28223-0001, NC, USA.,Institute of Bioinformatics, University of Georgia, 120 Green St., Athens, 30602, GA, USA
| | - Adriano de Bernardi Schneider
- AntiViral Research Center, Department of Medicine, University of California San Diego, 220 Dickinson St, Suite A, San Diego, 92103-8208, CA, USA
| | - Shi Chen
- Department of Public Health Sciences, College of Health and Human Services, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, 28223-0001, NC, USA
| | - Daniel Janies
- Department of Bioinformatics and Genomics, College of Computing and Informatics, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, 28223-0001, NC, USA
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Deng SQ, Yang X, Wei Y, Chen JT, Wang XJ, Peng HJ. A Review on Dengue Vaccine Development. Vaccines (Basel) 2020; 8:E63. [PMID: 32024238 PMCID: PMC7159032 DOI: 10.3390/vaccines8010063] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/30/2020] [Accepted: 01/31/2020] [Indexed: 12/11/2022] Open
Abstract
Dengue virus (DENV) has become a global health threat with about half of the world's population at risk of infection. Although the disease caused by DENV is self-limiting in the first infection, the antibody-dependent enhancement (ADE) effect increases the mortality in the second infection with a heterotypic virus. Since there is no specific efficient medicine in treatment, it is urgent to develop vaccines to prevent infection and disease progression. Currently, only a live attenuated vaccine, chimeric yellow fever 17D-tetravalent dengue vaccine (CYD-TDV), has been licensed for clinical use in some countries, and many candidate vaccines are still under research and development. This review discusses the progress, strengths, and weaknesses of the five types of vaccines including live attenuated vaccine, inactivated virus vaccine, recombinant subunit vaccine, viral vectored vaccine, and DNA vaccine.
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Affiliation(s)
- Sheng-Qun Deng
- Department of Pathogen Biology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (S.-Q.D.); (X.Y.); (Y.W.); (J.-T.C.)
| | - Xian Yang
- Department of Pathogen Biology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (S.-Q.D.); (X.Y.); (Y.W.); (J.-T.C.)
| | - Yong Wei
- Department of Pathogen Biology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (S.-Q.D.); (X.Y.); (Y.W.); (J.-T.C.)
| | - Jia-Ting Chen
- Department of Pathogen Biology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (S.-Q.D.); (X.Y.); (Y.W.); (J.-T.C.)
| | - Xiao-Jun Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Medical University, Dongguan 523808, China;
| | - Hong-Juan Peng
- Department of Pathogen Biology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China; (S.-Q.D.); (X.Y.); (Y.W.); (J.-T.C.)
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Zahid K, Shakoor S, Sajid HA, Afzal S, Ali L, Amin I, Shahid M, Idrees M. Advancements in developing an effective and preventive dengue vaccine. Future Virol 2020. [DOI: 10.2217/fvl-2019-0080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Every year millions of people in various tropical and subtropical regions encounter infection with dengue virus. Within the last few decades, its prevalence has increased up to 30-fold globally and presently these viruses have been transmitted in more than 100 countries. Scientists contributed to the development of tetravalent dengue vaccine by adopting numerous approaches including live vaccine, recombinant protein vaccine, DNA vaccine and virus-vectored vaccines. A vaccine should be genetically stable, equally effective against all serotypes, must be in-expensive and commercially available. Chimeric yellow fever virus-tetravalent dengue vaccine (CYD-TDV) is the first licensed vaccine developed by Sanofi Pasteur in December 2015, but this vaccine is not fully effective against different dengue virus serotypes (Sanofi Pasteur, Lyon, France). This review explores the advancements and challenges involved in the development of dengue vaccine.
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Affiliation(s)
- Khadija Zahid
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Sana Shakoor
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Hina Afzal Sajid
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Samia Afzal
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Liaqat Ali
- Department of Biological Sciences, National University of Modern Sciences, Rawalpindi, Pakistan
| | - Iram Amin
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Shahid
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
| | - Muhammad Idrees
- Division of Molecular Virology & Infectious Diseases, Centre of Excellence in Molecular Biology (CEMB), University of the Punjab, Lahore, Pakistan
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Anand R, Raghuwanshi R. Immunoinformatic Approaches for Vaccine Designing Against Viral Infections. Methods Mol Biol 2020; 2131:277-288. [PMID: 32162261 DOI: 10.1007/978-1-0716-0389-5_15] [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] [Indexed: 06/10/2023]
Abstract
Vaccines have become a cost-effective method for prevention or treatment of viral infections. Conventional methods to design a vaccine candidate is a laborious process requiring time and economy. Many approaches have been made to reduce the times and economy of vaccine development. In this regard, immunoinformatic approach is supposed to bring a revolution in vaccine development. This chapter provides an overview of immunoinformatics and its application in in silico vaccine design and development strategies in humans against viral diseases with the help of available databases and tools.
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Affiliation(s)
- Richa Anand
- Department of Applied Sciences, Indian Institute of Information Technology, Allahabad, UP, India
| | - Richa Raghuwanshi
- Department of Botany, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi, UP, India.
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Buchman A, Gamez S, Li M, Antoshechkin I, Li HH, Wang HW, Chen CH, Klein MJ, Duchemin JB, Crowe JE, Paradkar PN, Akbari OS. Broad dengue neutralization in mosquitoes expressing an engineered antibody. PLoS Pathog 2020; 16:e1008103. [PMID: 31945137 PMCID: PMC6964813 DOI: 10.1371/journal.ppat.1008103] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/23/2019] [Indexed: 12/11/2022] Open
Abstract
With dengue virus (DENV) becoming endemic in tropical and subtropical regions worldwide, there is a pressing global demand for effective strategies to control the mosquitoes that spread this disease. Recent advances in genetic engineering technologies have made it possible to create mosquitoes with reduced vector competence, limiting their ability to acquire and transmit pathogens. Here we describe the development of Aedes aegypti mosquitoes synthetically engineered to impede vector competence to DENV. These mosquitoes express a gene encoding an engineered single-chain variable fragment derived from a broadly neutralizing DENV human monoclonal antibody and have significantly reduced viral infection, dissemination, and transmission rates for all four major antigenically distinct DENV serotypes. Importantly, this is the first engineered approach that targets all DENV serotypes, which is crucial for effective disease suppression. These results provide a compelling route for developing effective genetic-based DENV control strategies, which could be extended to curtail other arboviruses.
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Affiliation(s)
- Anna Buchman
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California, United States of America
| | - Stephanie Gamez
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California, United States of America
| | - Ming Li
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California, United States of America
| | - Igor Antoshechkin
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California, United States of America
| | - Hsing-Han Li
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Hsin-Wei Wang
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Chun-Hong Chen
- National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
- National Mosquito-Borne Diseases Control Research Center, National Health Research Institutes, Zhunan, Taiwan
| | - Melissa J. Klein
- CSIRO Health and Biosecurity, Australian Animal Health Laboratory, Geelong, VIC, Australia
| | - Jean-Bernard Duchemin
- CSIRO Health and Biosecurity, Australian Animal Health Laboratory, Geelong, VIC, Australia
| | - James E. Crowe
- Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
- Departments of Pediatrics, Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Prasad N. Paradkar
- CSIRO Health and Biosecurity, Australian Animal Health Laboratory, Geelong, VIC, Australia
| | - Omar S. Akbari
- Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California, United States of America
- Tata Institute for Genetics and Society-UCSD, La Jolla, California, United States of America
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Affiliation(s)
- Khunsha Fatima
- Dow Medical College, Dow University of Health Sciences, Karachi, Pakistan
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Pong LY, Parkkinen S, Dhanoa A, Gan HM, Wickremesinghe IAC, Syed Hassan S. MicroRNA profiling of mouse liver in response to DENV-1 infection by deep sequencing. PeerJ 2019; 7:e6697. [PMID: 31065454 PMCID: PMC6482938 DOI: 10.7717/peerj.6697] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/28/2019] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Dengue caused by dengue virus (DENV) serotypes -1 to -4 is the most important mosquito-borne viral disease in the tropical and sub-tropical countries worldwide. Yet many of the pathophysiological mechanisms of host responses during DENV infection remain largely unknown and incompletely understood. METHODS Using a mouse model, the miRNA expressions in liver during DENV-1 infection was investigated using high throughput miRNA sequencing. The differential expressions of miRNAs were then validated by qPCR, followed by target genes prediction. The identified miRNA targets were subjected to gene ontology (GO) annotation and pathway enrichment analysis to elucidate the potential biological pathways and molecular mechanisms associated with DENV-1 infection. RESULTS A total of 224 and 372 miRNAs out of 433 known mouse miRNAs were detected in the livers of DENV-1-infected and uninfected mice, respectively; of these, 207 miRNAs were present in both libraries. The miR-148a-3p and miR-122-5p were the two most abundant miRNAs in both groups. Thirty-one miRNAs were found to have at least 2-fold change in upregulation or downregulation, in which seven miRNAs were upregulated and 24 miRNAs were downregulated in the DENV-1-infected mouse livers. The miR-1a-3p was found to be the most downregulated miRNA in the DENV-1-infected mouse livers, with a significant fold change of 0.10. To validate the miRNA sequencing result, the expression pattern of 12 miRNAs, which were highly differentially expressed or most abundant, were assessed by qPCR and nine of them correlated positively with the one observed in deep sequencing. In silico functional analysis revealed that the adaptive immune responses involving TGF-beta, MAPK, PI3K-Akt, Rap1, Wnt and Ras signalling pathways were modulated collectively by 23 highly differentially expressed miRNAs during DENV-1 infection. CONCLUSION This study provides the first insight into the global miRNA expressions of mouse livers in response to DENV-1 infection in vivo and the possible roles of miRNAs in modulating the adaptive immune responses during DENV-1 infection.
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Affiliation(s)
- Lian Yih Pong
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
- Infectious Diseases and Health Cluster, Tropical Medicine and Biology Platform, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Sinikka Parkkinen
- Department of Biology, University of Eastern Finland, Joensuu, North Karelia, Finland
| | - Amreeta Dhanoa
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
- Infectious Diseases and Health Cluster, Tropical Medicine and Biology Platform, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Han Ming Gan
- School of Science, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
- Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria, Australia
| | | | - Sharifah Syed Hassan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
- Infectious Diseases and Health Cluster, Tropical Medicine and Biology Platform, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
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Pang EL, Peyret H, Ramirez A, Loh HS, Lai KS, Fang CM, Rosenberg WM, Lomonossoff GP. Epitope Presentation of Dengue Viral Envelope Glycoprotein Domain III on Hepatitis B Core Protein Virus-Like Particles Produced in Nicotiana benthamiana. FRONTIERS IN PLANT SCIENCE 2019; 10:455. [PMID: 31057572 PMCID: PMC6477658 DOI: 10.3389/fpls.2019.00455] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 03/26/2019] [Indexed: 05/07/2023]
Abstract
Dengue fever is currently ranked as the top emerging tropical disease, driven by increased global travel, urbanization, and poor hygiene conditions as well as global warming effects which facilitate the spread of Aedes mosquitoes beyond their current distribution. Today, more than 100 countries are affected most of which are tropical Asian and Latin American nations with limited access to medical care. Hence, the development of a dengue vaccine that is dually cost-effective and able to confer a comprehensive protection is ultimately needed. In this study, a consensus sequence of the antigenic dengue viral glycoprotein domain III (cEDIII) was used aiming to provide comprehensive coverage against all four circulating dengue viral serotypes and potential clade replacement event. Utilizing hepatitis B tandem core technology, the cEDIII sequence was inserted into the immunodominant c/e1 loop region so that it could be displayed on the spike structures of assembled particles. The tandem core particles displaying cEDIII epitopes (tHBcAg-cEDIII) were successfully produced in Nicotiana benthamiana via Agrobacterium-mediated transient expression strategy to give a protein of ∼54 kDa, detected in both soluble and insoluble fractions of plant extracts. The assembled tHBcAg-cEDIII virus-like particles (VLPs) were also visualized from transmission electron microscopy. These VLPs had diameters that range from 32 to 35 nm, presenting an apparent size increment as compared to tHBcAg control particles without cEDIII display (namely tEL). Mice immunized with tHBcAg-cEDIII VLPs showed a positive seroconversion to cEDIII antigen, thereby signifying that the assembled tHBcAg-cEDIII VLPs have successfully displayed cEDIII antigen to the immune system. If it is proven to be successful, tHBcAg-cEDIII has the potential to be developed as a cost-effective vaccine candidate that confers a simultaneous protection against all four infecting dengue viral serotypes.
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Affiliation(s)
- Ee Leen Pang
- School of Biosciences, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Hadrien Peyret
- Department of Biological Chemistry, John Innes Centre, Norwich, United Kingdom
| | | | - Hwei-San Loh
- School of Biosciences, University of Nottingham Malaysia, Semenyih, Malaysia
| | - Kok-Song Lai
- Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Chee-Mun Fang
- Division of Biomedical Sciences, School of Pharmacy, University of Nottingham Malaysia, Semenyih, Malaysia
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Needham JW, Ünlü NL, Yurdakul C, Ünlü MS. Interferometric Reflectance Imaging Sensor (IRIS) for Molecular Kinetics with a Low-Cost, Disposable Fluidic Cartridge. Methods Mol Biol 2019; 2027:15-28. [PMID: 31309469 DOI: 10.1007/978-1-4939-9616-2_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The determination of kinetic information and appropriate binding pairs is fundamental to the proper optimization and selection of ligands used in immunoassays, diagnostics, and therapeutics. However, the ability to estimate such parameters in a multiplexed and inexpensive format remains difficult and modification of the ligand is often necessary. Here, we detail the methods and materials necessary to evaluate hundreds of unlabeled ligands simultaneously using the interferometric reflectance imaging sensor (IRIS). The incorporation of a low-cost fluidic cartridge that integrates on the top of the sensor simplifies reagent handling considerably.
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Affiliation(s)
- James W Needham
- InBios International Inc., Seattle, WA, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, USA.
| | - Nese Lortlar Ünlü
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Celalettin Yurdakul
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA
| | - M Selim Ünlü
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, USA
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Fahimi H, Sadeghizadeh M, Hassan ZM, Auerswald H, Schreiber M. Immunogenicity of a novel tetravalent dengue envelope protein domain III-based antigen in mice. EXCLI JOURNAL 2018; 17:1054-1068. [PMID: 30564083 PMCID: PMC6295631 DOI: 10.17179/excli2018-1664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/20/2018] [Indexed: 01/01/2023]
Abstract
Dengue virus is a mosquito-borne pathogen that causes dengue diseases. All four serotypes of dengue virus are infectious for humans. Therefore, an efficacious dengue vaccine should be tetravalent to provide protection against all types of virus. The goal of this study was to design a new tetravalent recombinant protein from envelope protein of dengue viruses to induce virus-neutralizing antibodies against all four serotypes in mice. A chimeric protein was designed from domain III of envelope protein of all serotypes of dengue virus. Four domain III fragments were linked together by alpha helix making linkers. The final sequence of the designed protein was analyzed in silico and the coding gene sequence was deduced by reverse translation. After cloning and expression of the recombinant protein (ED3-tetravalent protein), identity of the purified protein was confirmed using a pan-dengue specific monoclonal antibody in Western blotting. Then, the immunogenicity of the purified protein was studied in mice using antibody titration. The efficacy of induced antibodies in neutralization of the virus was studies by FRNT method. Furthermore, the induction of cellular immunity was studied by measurement of cytokines using ELISA method and measurement of lymphocyte proliferation using MTT assay. The ED3-tetravalent protein was able to enhance neutralizing immunogenic response against all four dengue serotypes; in similar way to that of tetravalent formulation of four individual domain III-based polypeptides. It is suggested that the ED3-tetravalent fusion protein can induce broadly neutralizing antibody responses against all four serotypes of dengue virus in mice.
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Affiliation(s)
- Hossein Fahimi
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Sadeghizadeh
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zuhair M Hassan
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Heidi Auerswald
- Department of Virology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Michael Schreiber
- Department of Virology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
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Benjathummarak S, Pipattanaboon C, Boonha K, Wongwit W, Ramasoota P, Pitaksajjakul P. Human single-chain variable fragment antibody expressed in E. coli with optimal in vitro cross-neutralizing and no enhancing activity. Biologicals 2018; 56:54-62. [DOI: 10.1016/j.biologicals.2018.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/28/2018] [Accepted: 10/12/2018] [Indexed: 01/11/2023] Open
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Identification of Differentially Expressed Genes in BALB/c Mouse Liver upon Primary Infection with DENV1 and Sequential Heterologous Infection with DENV2. Pathogens 2018; 7:pathogens7040078. [PMID: 30279404 PMCID: PMC6313771 DOI: 10.3390/pathogens7040078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 11/30/2022] Open
Abstract
Dengue virus (DENV) results in 100 million cases of infections and 22,000 deaths per year. Liver involvement, thrombocytopenia, haemorrhage and plasma leakage are characteristic manifestations of severe forms of DENV infection. However, the molecular pathways of DENV infection have not been comprehensively studied compared to the host immunological responses. We performed an in vivo study using the BALB/c mouse model with a modified mRNA differential display methodology (GeneFishingTM) using the annealing control primer (ACP) system to capture differentially expressed genes (DEGs) in mice liver upon primary infection with DENV1 and sequential heterologous infection with DENV2. Secondary heterologous infection with DENV2 was carried out at Immunoglobulin IgM and IgG peaks following the primary DENV1 infection with the hope of determining any potential effect antibodies IgM and IgG may have on sequential heterologous infection. 30 DEGs were identified and sequenced across all three treatment groups and they belong to a variety of important pathways such as apoptosis, innate immune response, inflammatory response, metabolic processes and oxidative stress. Analysis of differentially expressed genes in response to viral infection offers valuable knowledge about the dynamic and complex association between host cell and the virus. Furthermore, some DEGs identified support DENV induced liver damage.
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A Single Mutation at Position 156 in the Envelope Protein of Tembusu Virus Is Responsible for Virus Tissue Tropism and Transmissibility in Ducks. J Virol 2018; 92:JVI.00427-18. [PMID: 29899104 DOI: 10.1128/jvi.00427-18] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 06/06/2018] [Indexed: 01/20/2023] Open
Abstract
Duck Tembusu virus (TMUV), like other mosquito-borne flaviviruses, such as Japanese encephalitis virus, West Nile virus, and Bagaza virus, is able to transmit vector-independently. To date, why these flaviviruses can be transmitted without mosquito vectors remains poorly understood. To explore the key molecular basis of flavivirus transmissibility, we compared virus replication and transmissibility of an early and a recent TMUV in ducks. The recent TMUV strain FX2010 replicated systemically and transmitted efficiently in ducks, while the replication of early strain MM1775 was limited and did not transmit among ducks. The TMUV envelope protein and its domain I were responsible for tissue tropism and transmissibility. The mutation S156P in the domain I resulted in disruption of N-linked glycosylation at amino acid 154 of the E protein and changed the conformation of "150 loop" of the E protein, which reduced virus replication in lungs and abrogated transmission in ducks. These data indicate that the 156S in the envelope protein is critical for TMUV tissue tropism and transmissibility in ducks in the absence of mosquitos. Our findings provide novel insights on understanding TMUV transmission among ducks.IMPORTANCE Tembusu virus, similar to other mosquito-borne flaviviruses such as WNV, JEV, and BAGV, can be transmitted without the presence of mosquito vectors. We demonstrate that the envelope protein of TMUV and its amino acid (S) at position 156 is responsible for tissue tropism and transmission in ducks. The mutation S156P results in disruption of N-linked glycosylation at amino acid 154 of the E protein and changes the conformation of "150 loop" of the E protein, which induces limited virus replication in lungs and abrogates transmission between ducks. Our findings provide new knowledge about TMUV transmission among ducks.
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Arthropod EVs mediate dengue virus transmission through interaction with a tetraspanin domain containing glycoprotein Tsp29Fb. Proc Natl Acad Sci U S A 2018; 115:E6604-E6613. [PMID: 29946031 DOI: 10.1073/pnas.1720125115] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Dengue virus (DENV) is a mosquito-borne flavivirus that causes dengue fever in humans, worldwide. Using in vitro cell lines derived from Aedes albopictus and Aedes aegypti, the primary vectors of DENV, we report that DENV2/DENV3-infected cells secrete extracellular vesicles (EVs), including exosomes, containing infectious viral RNA and proteins. A full-length DENV2 genome, detected in arthropod EVs, was infectious to naïve mosquito and mammalian cells, including human-skin keratinocytes and blood endothelial cells. Cryo-electron microscopy showed mosquito EVs with a size range from 30 to 250 nm. Treatments with RNase A, Triton X-100, and 4G2 antibody-bead binding assays showed that infectious DENV2-RNA and proteins are contained inside EVs. Viral plaque formation and dilution assays also showed securely contained infectious viral RNA and proteins in EVs are transmitted to human cells. Up-regulated HSP70 upon DENV2 infection showed no role in viral replication and transmission through EVs. In addition, qRT-PCR and immunoblotting results revealed that DENV2 up-regulates expression of a mosquito tetraspanin-domain-containing glycoprotein, designated as Tsp29Fb, in A. aegypti mosquitoes, cells, and EVs. RNAi-mediated silencing and antibody blocking of Tsp29Fb resulted in reduced DENV2 loads in both mosquito cells and EVs. Immunoprecipitation showed Tsp29Fb to directly interact with DENV2 E-protein. Furthermore, treatment with GW4869 (exosome-release inhibitor) affected viral burden, direct interaction of Tsp29Fb with E-protein and EV-mediated transmission of viral RNA and proteins to naïve human cells. In summary, we report a very important finding on EV-mediated transmission of DENV2 from arthropod to mammalian cells through interactions with an arthropod EVs-enriched marker Tsp29Fb.
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Mishra P, Tyagi BK, Chandrasekaran N, Mukherjee A. Biological nanopesticides: a greener approach towards the mosquito vector control. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:10151-10163. [PMID: 28721618 DOI: 10.1007/s11356-017-9640-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/26/2017] [Indexed: 06/07/2023]
Abstract
Mosquitoes, being a vector for some potentially dreadful diseases, pose a considerable threat to people all around the world. The control over the growth and propagation of mosquitoes comprises conventional pesticides, insect growth regulators and other microbial control agents. However, the usage of these common chemicals and conventional pesticides eventually has a negative impact on human health as well as the environment, which therefore becomes a major concern. The lacuna allows nanotechnology to come into action and exploit nanopesticides. Nanopesticides are majorly divided into two categories-synthetic and biological. Several nanoformulations serve as a promising nanopesticide viz. nanoparticles, e.g. biologically synthesised nanoparticles through plant extracts, nanoemulsions prepared using the essential oils like neem oil and citronella oil and nanoemulsion of conventional pesticides like pyrethroids. These green approaches of synthesising nanopesticides make use of non-toxic and biologically derived compounds and hence are eco-friendly with a better target specificity. Even though there are numerous evidences to show the effectiveness of these nanopesticides, very few efforts have been made to study the possible non-target effects on other organisms prevalent in the aquatic ecosystem. This study focuses on the role of these nanopesticides towards the vector control and its eco-safe property against the other non-target species.
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Affiliation(s)
- Prabhakar Mishra
- Centre for Nanobiotechnology, VIT University, Vellore, Tamil Nadu, 632014, India
| | - Brij Kishore Tyagi
- Department of Zoology & Environment Science, Punjabi University, Patiala, Punjab, 147002, India
| | | | - Amitava Mukherjee
- Centre for Nanobiotechnology, VIT University, Vellore, Tamil Nadu, 632014, India.
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Dengue viruses and promising envelope protein domain III-based vaccines. Appl Microbiol Biotechnol 2018; 102:2977-2996. [PMID: 29470620 DOI: 10.1007/s00253-018-8822-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 12/13/2022]
Abstract
Dengue viruses are emerging mosquito-borne pathogens belonging to Flaviviridae family which are transmitted to humans via the bites of infected mosquitoes Aedes aegypti and Aedes albopictus. Because of the wide distribution of these mosquito vectors, more than 2.5 billion people are approximately at risk of dengue infection. Dengue viruses cause dengue fever and severe life-threatening illnesses as well as dengue hemorrhagic fever and dengue shock syndrome. All four serotypes of dengue virus can cause dengue diseases, but the manifestations are nearly different depending on type of the virus in consequent infections. Infection by any serotype creates life-long immunity against the corresponding serotype and temporary immunity to the others. This transient immunity declines after a while (6 months to 2 years) and is not protective against other serotypes, even may enhance the severity of a secondary heterotypic infection with a different serotype through a phenomenon known as antibody-depended enhancement (ADE). Although, it can be one of the possible explanations for more severe dengue diseases in individuals infected with a different serotype after primary infection. The envelope protein (E protein) of dengue virus is responsible for a wide range of biological activities, including binding to host cell receptors and fusion to and entry into host cells. The E protein, and especially its domain III (EDIII), stimulates host immunity responses by inducing protective and neutralizing antibodies. Therefore, the dengue E protein is an important antigen for vaccine development and diagnostic purposes. Here, we have provided a comprehensive review of dengue disease, vaccine design challenges, and various approaches in dengue vaccine development with emphasizing on newly developed envelope domain III-based dengue vaccine candidates.
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Wadood A, Mehmood A, Khan H, Ilyas M, Ahmad A, Alarjah M, Abu-Izneid T. Epitopes based drug design for dengue virus envelope protein: A computational approach. Comput Biol Chem 2017; 71:152-160. [PMID: 29096381 DOI: 10.1016/j.compbiolchem.2017.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/04/2017] [Accepted: 10/19/2017] [Indexed: 12/25/2022]
Abstract
Dengue virus (DENV) has emerged as a rapidly spreading epidemic throughout the tropical and subtropical regions around the globe. No suitable drug has been designed yet to fight against DENV, therefore, the need for safe and effective antiviral drug has become imperative. The envelope protein of DENV is responsible for mediating the fusion process between viral and host membranes. This work reports an in silico approach to target B and T cell epitopes for dengue envelope protein inhibition. A conserved region "QHGTI" in B and T cell epitopes of dengue envelope glycoprotein was confirmed to be valid for targeting by visualizing its interactions with the host cell membrane TIM-1 protein which acts as a receptor for serotype 2 and 3. A reverse pharmacophore mapping approach was used to generate a seven featured pharmacophore model on the basis of predicted epitope. This pharmacophore model as a 3D query was used to virtually screen a chemical compounds dataset "Chembridge". A total of 1010 compounds mapped on the developed pharmacophore model. These retrieved hits were subjected to filtering via Lipinski's rule of five, as a result 442 molecules were shortlisted for further assessment using molecular docking. Finally, 14 hits of different structural properties having interactions with the active site residues of dengue envelope glycoprotein were selected as lead candidates. These structurally diverse lead candidates have strong likelihood to act as further starting structures in the development of novel and potential drugs for the treatment of dengue fever.
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Affiliation(s)
- Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan-23200, Pakistan.
| | - Aamir Mehmood
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan-23200, Pakistan
| | - Huma Khan
- Department of Biochemistry, Abdul Wali Khan University Mardan, Mardan-23200, Pakistan
| | - Muhammad Ilyas
- Centre for Human Genetics, Hazara University, Mansehra, KP, Pakistan
| | - Ayaz Ahmad
- Department of Biotechnology, Abdul Wali Khan University Mardan, Mardan-23200, Pakistan
| | - Mohammed Alarjah
- Pharmaceutical Chemistry Department, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Tareq Abu-Izneid
- Pharmaceutical Chemistry Department, College of Pharmacy, Umm Al-Qura University, Makkah, Saudi Arabia.
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Dutta S, Celestine MJ, Khanal S, Huddleston A, Simms C, Arca JF, Mitra A, Heller L, Kraj PJ, Ledizet M, Anderson JF, Neelakanta G, Holder AA, Sultana H. Coordination of different ligands to copper(II) and cobalt(III) metal centers enhances Zika virus and dengue virus loads in both arthropod cells and human keratinocytes. Biochim Biophys Acta Gen Subj 2017; 1862:40-50. [PMID: 29030319 DOI: 10.1016/j.bbagen.2017.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 09/01/2017] [Accepted: 10/06/2017] [Indexed: 11/17/2022]
Abstract
Trace elements such as copper and cobalt have been associated with virus-host interactions. However, studies to show the effect of conjugation of copper(II) or cobalt(III) metal centers to thiosemicarbazone ligand(s) derived from either food additives or mosquito repellent such as 2-acetylethiazole or citral, respectively, on Zika virus (ZIKV) or dengue virus (serotype 2; DENV2) infections have not been explored. In this study, we show that four compounds comprising of thiosemicarbazone ligand derived from 2-acetylethiazole viz., (E)-N-ethyl-2-[1-(thiazol-2-yl)ethylidene]hydrazinecarbothioamide (acetylethTSC) (compound 1), a copper(II) complex with acetylethTSC as a ligand (compound 2), a thiosemicarbazone ligand-derived from citral (compound 3) and a cobalt(III) complex with a citral-thiosemicarbazone ligand (compound 4) increased DENV2 and ZIKV replication in both mosquito C6/36 cells and human keratinocytes (HaCaT cells). Treatment of both cell lines with compounds 2 or 4 showed increased dengue viral titers at all three tested doses. Enhanced dengue viral plaque formation was also noted at the tested dose of 100μM, suggesting higher production of infectious viral particles. Treatment with the compounds 2 or 4 enhanced ZIKV and DENV2 RNA levels in HeLa cell line and primary cultures of mouse bone marrow derived dendritic cells. Also, pre- or post treatments with conjugated compounds 2 or 4 showed higher loads of ZIKV or DENV2 envelope (E) protein in HaCaT cells. No changes in loads of E-protein were found in ZIKV-infected C6/36 cells, when compounds were treated after infection. In addition, we tested bis(1,10-phenanthroline)copper(II) chloride ([Cu(phen)2]Cl2, (compound 5) and tris(1,10-phenanthroline)cobalt(III) chloride ([Co(phen)3]Cl3, (compound 6) that also showed enhanced DENV2 loads. Also, we found that copper(II) chloride dehydrate (CuCl2·2H2O) or cobalt(II) chloride hexahydrate (CoCl2·6H2O) alone had no effects as "free" cations. Taken together, these findings suggest that use of Cu(II) or Co(III) conjugation to organic compounds, in insect repellents and/or food additives could enhance DENV2/ZIKV loads in human cells and perhaps induce pathogenesis in infected individuals or individuals pre-exposed to such conjugated complexes. IMPORTANCE Mosquito-borne diseases are of great concern to the mankind. Use of chemicals/repellents against mosquito bites and transmission of microbes has been the topic of interest for many years. Here, we show that thiosemicarbazone ligand(s) derived from 2-acetylethiazole or citral or 1,10-phenanthroline upon conjugation with copper(II) or cobalt(III) metal centers enhances dengue virus (serotype 2; DENV2) and/or Zika virus (ZIKV) infections in mosquito, mouse and human cells. Enhanced ZIKV/DENV2 capsid mRNA or envelope protein loads were evident in mosquito cells and human keratinocytes, when treated with compounds before/after infections. Also, treatment with copper(II) or cobalt(III) conjugated compounds increased viral titers and number of plaque formations. These studies suggest that conjugation of compounds in repellents/essential oils/natural products/food additives with copper(II) or cobalt(III) metal centers may not be safe, especially in tropical and subtropical places, where several dengue infection cases and deaths are reported annually or in places with increased ZIKV caused microcephaly.
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Affiliation(s)
- Shovan Dutta
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA
| | - Michael J Celestine
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, USA
| | - Supreet Khanal
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA
| | - Alexis Huddleston
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, USA
| | - Colin Simms
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA
| | - Jessa Faye Arca
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, USA
| | - Amlan Mitra
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, USA
| | - Loree Heller
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA; School of Medical Diagnostic & Translational Sciences College of Health Sciences, Old Dominion University, Norfolk, VA, USA
| | - Piotr J Kraj
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA; Center for Molecular Medicine, Old Dominion University, Norfolk, VA, USA
| | | | - John F Anderson
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Girish Neelakanta
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA; Center for Molecular Medicine, Old Dominion University, Norfolk, VA, USA
| | - Alvin A Holder
- Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA, USA
| | - Hameeda Sultana
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA; Center for Molecular Medicine, Old Dominion University, Norfolk, VA, USA.
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Protection against mosquito vectors Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus using a novel insect repellent, ethyl anthranilate. Acta Trop 2017; 174:56-63. [PMID: 28666890 DOI: 10.1016/j.actatropica.2017.06.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 02/06/2023]
Abstract
Growing concern on the application of synthetic mosquito repellents in the recent years has instigated the identification and development of better alternatives to control different mosquito-borne diseases. In view of above, present investigation evaluates the repellent activity of ethyl anthranilate (EA), a non-toxic, FDA approved volatile food additive against three known mosquito vectors namely, Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus under laboratory conditions following standard protocols. Three concentration levels (2%, 5% and 10% w/v) of EA were tested against all the three selected mosquito species employing K & D module and arm-in-cage method to determine the effective dose (ED50) and complete protection time (CPT), respectively. The repellent activity of EA was further investigated by modified arm-in-cage method to determine the protection over extended spatial ranges against all mosquito species. All behavioural situations were compared with the well-documented repellent N,N-diethylphenyl acetamide (DEPA) as a positive control. The findings demonstrated that EA exhibited significant repellent activity against all the three mosquitoes species. The ED50 values of EA, against Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus were found to be 0.96%, 5.4% and 3.6% w/v, respectively. At the concentration of 10% w/v, it provided CPTs of 60, 60 and 30min, respectively, against Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus mosquitoes. Again in spatial repellency evaluation, EA was found to be extremely effective in repelling all the three tested species of mosquitoes. Ethyl anthranilate provided comparable results to standard repellent DEPA during the study. Results have concluded that the currently evaluated chemical, EA has potential repellent activity against some well established mosquito vectors. The study emphasizes that repellent activity of EA could be exploited for developing effective, eco-friendly, acceptable and safer alternative to the existing harmful repellents for personal protection against different hematophagous mosquito species.
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Schmidt AC, Lin L, Martinez LJ, Ruck RC, Eckels KH, Collard A, De La Barrera R, Paolino KM, Toussaint JF, Lepine E, Innis BL, Jarman RG, Thomas SJ. Phase 1 Randomized Study of a Tetravalent Dengue Purified Inactivated Vaccine in Healthy Adults in the United States. Am J Trop Med Hyg 2017; 96:1325-1337. [PMID: 28719287 PMCID: PMC5462566 DOI: 10.4269/ajtmh.16-0634] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The safety and immunogenicity of four formulations of an investigational tetravalent dengue purified inactivated vaccine (DPIV), formulated at 1 or 4 μg with aluminum hydroxide (alum) or at 1 μg with an adjuvant system (AS01E or AS03B), were evaluated in a first-time-in-human, placebo-controlled, randomized, observer-blind, phase 1 trial in the continental United States. Two doses of vaccine or placebo were administered intramuscularly 4 weeks apart to 100 healthy adults 18–39 years of age, randomized 1:1:1:1:1 to receive one of four DPIV formulations or saline placebo. The response to a third dose was evaluated in a subset of nine participants remote from primary vaccination. Humoral immunogenicity was assessed using a 50% microneutralization assay. All DPIV formulations were well tolerated. No vaccine-related serious adverse events were observed through 12 months after the second vaccine dose. In all DPIV groups, geometric mean antibody titers peaked at Day 56, waned through 6 months after the second vaccine dose, and then stabilized. In the nine subjects where boosting was evaluated, a strong anamnestic response was observed. These results support continuation of the clinical development of this dengue vaccine candidate (clinicaltrials.gov: NCT01666652).
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Affiliation(s)
| | - Leyi Lin
- Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Luis J Martinez
- Walter Reed Army Institute of Research, Silver Spring, Maryland
| | - Richard C Ruck
- Walter Reed Army Institute of Research, Silver Spring, Maryland
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Malisheni M, Khaiboullina SF, Rizvanov AA, Takah N, Murewanhema G, Bates M. Clinical Efficacy, Safety, and Immunogenicity of a Live Attenuated Tetravalent Dengue Vaccine (CYD-TDV) in Children: A Systematic Review with Meta-analysis. Front Immunol 2017; 8:863. [PMID: 28824613 PMCID: PMC5543029 DOI: 10.3389/fimmu.2017.00863] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 07/07/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Dengue hemorrhagic fever is the leading cause of hospitalization and death in children living in Asia and Latin America. There is an urgent need for an effective and safe dengue vaccine to reduce morbidity and mortality in this high-risk population given the lack of dengue specific treatment at present. This review aims to determine the efficacy, safety, and immunogenicity of CYD-TDV vaccine in children. METHODS This is a systematic review including meta-analysis of randomized controlled clinical trial data from Embase, Medline, the Cochrane Library, Web of Science, and ClinicalTrials.gov. Studies that assessed CYD-TDV vaccine efficacy [(1 - RR)*100], safety (RR), and immunogenicity (weighted mean difference) in children were included in this study. Random effects model was employed to analyze patient-level data extracted from primary studies. RESULTS The overall efficacy of CYD-TDV vaccine was 54% (40-64), while serotype-specific efficacy was 77% (66-85) for DENV4, 75% (65-82) for DENV3, 50% (36-61) for DENV1, and 34% (14-49) for DENV2. 15% (-174-74) vaccine efficacy was obtained for the unknown serotype. Meta-analysis of included studies with longer follow-up time (25 months) revealed that CYD-TDV vaccine significantly increased the risk of injection site reactions (RR = 1.1: 1.04-1.17; p-value = 0.001). Immunogenicity (expressed as geometric mean titers) in descending order was 439.7 (331.7-547.7), 323 (247 - 398.7), 144.1 (117.9-170.2), and 105 (88.7-122.8) for DENV3, DENV2, DENV1, and DENV4, respectively. CONCLUSION CYD-TDV vaccine is effective and immunogenic in children overall. Reduced efficacy of CYD-TDV vaccine against DENV2 notoriously known for causing severe dengue infection and dengue outbreaks cause for serious concern. Post hoc meta-analysis of long-term follow-up data (≥25 months) from children previously vaccinated with CYD-TDV vaccine is needed to make a conclusion regarding CYD-TDV vaccine safety in children. However, CYD-TDV vaccine should be considered for use in regions where DENV2 is not endemic as currently there is no specific treatment for dengue infection.
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Affiliation(s)
- Moffat Malisheni
- Ministry of Health, Lusaka, Zambia
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, United Kingdom
- Department of Microbiology and Immunology, National University of Singapore, Singapore, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore
| | - Svetlana F Khaiboullina
- Department of Microbiology and Immunology, University of Nevada Reno, Reno, NV, United States
- Kazan Federal University, Kazan, Russia
| | | | - Noah Takah
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, United Kingdom
- Ministry of Health, Yaounde, Cameroon
| | - Grant Murewanhema
- Institute of Health and Wellbeing, University of Glasgow, Glasgow, United Kingdom
- College of Health Sciences, University of Zimbabwe, Harare, Zimbabwe
| | - Matthew Bates
- University College London Research & Training Programme, University of Zambia, University Teaching Hospital, Lusaka, Zambia
- HerpeZ, University Teaching Hospital, Lusaka, Zambia
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Pang EL, Loh HS. Towards development of a universal dengue vaccine – How close are we? ASIAN PAC J TROP MED 2017; 10:220-228. [DOI: 10.1016/j.apjtm.2017.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Revised: 01/20/2017] [Accepted: 01/26/2017] [Indexed: 11/16/2022] Open
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50
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Shim E. Dengue Dynamics and Vaccine Cost-Effectiveness Analysis in the Philippines. Am J Trop Med Hyg 2016; 95:1137-1147. [PMID: 27601519 PMCID: PMC5094230 DOI: 10.4269/ajtmh.16-0194] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 08/01/2016] [Indexed: 01/05/2023] Open
Abstract
Dengue is one of the most problematic vector-borne diseases in the Philippines, with an estimated 842,867 cases resulting in medical costs of $345 million U.S. dollars annually. In December 2015, the first dengue vaccine, known as chimeric yellow fever virus-dengue virus tetravalent dengue vaccine, was approved for use in the Philippines and is given to children 9 years of age. To estimate the cost-effectiveness of dengue vaccination in the Philippines, we developed an age-structured model of dengue transmission and vaccination. Using our model, we compared two vaccination scenarios entailing routine vaccination programs both with and without catch-up vaccination. Our results indicate that the higher the cost of vaccination, the less cost-effective the dengue vaccination program. With the current dengue vaccination program that vaccinates children 9 years of age, dengue vaccination is cost-effective for vaccination costs up to $70 from a health-care perspective and up to $75 from a societal perspective. Under a favorable scenario consisting of 1 year of catch-up vaccinations that target children 9-15 years of age, followed by regular vaccination of 9-year-old children, vaccination is cost-effective at costs up to $72 from a health-care perspective and up to $78 from a societal perspective. In general, dengue vaccination is expected to reduce the incidence of both dengue fever and dengue hemorrhagic fever /dengue shock syndrome. Our results demonstrate that even at relatively low vaccine efficacies, age-targeted vaccination may still be cost-effective provided the vaccination cost is sufficiently low.
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Affiliation(s)
- Eunha Shim
- Department of Mathematics, Soongsil University, Seoul, Republic of Korea
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