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Williams T, McCaw JM, Osborne JM. Spatial information allows inference of the prevalence of direct cell-to-cell viral infection. PLoS Comput Biol 2024; 20:e1012264. [PMID: 39042664 PMCID: PMC11296656 DOI: 10.1371/journal.pcbi.1012264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 08/02/2024] [Accepted: 06/19/2024] [Indexed: 07/25/2024] Open
Abstract
The role of direct cell-to-cell spread in viral infections-where virions spread between host and susceptible cells without needing to be secreted into the extracellular environment-has come to be understood as essential to the dynamics of medically significant viruses like hepatitis C and influenza. Recent work in both the experimental and mathematical modelling literature has attempted to quantify the prevalence of cell-to-cell infection compared to the conventional free virus route using a variety of methods and experimental data. However, estimates are subject to significant uncertainty and moreover rely on data collected by inhibiting one mode of infection by either chemical or physical factors, which may influence the other mode of infection to an extent which is difficult to quantify. In this work, we conduct a simulation-estimation study to probe the practical identifiability of the proportion of cell-to-cell infection, using two standard mathematical models and synthetic data that would likely be realistic to obtain in the laboratory. We show that this quantity cannot be estimated using non-spatial data alone, and that the collection of data which describes the spatial structure of the infection is necessary to infer the proportion of cell-to-cell infection. Our results provide guidance for the design of relevant experiments and mathematical tools for accurately inferring the prevalence of cell-to-cell infection in in vitro and in vivo contexts.
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Affiliation(s)
- Thomas Williams
- School of Mathematics and Statistics, University of Melbourne, Melbourne, Australia
| | - James M. McCaw
- School of Mathematics and Statistics, University of Melbourne, Melbourne, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
| | - James M. Osborne
- School of Mathematics and Statistics, University of Melbourne, Melbourne, Australia
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3
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Konkova AV, Savina IV, Evtushok DV, Pozmogova TN, Solomatina MV, Nokhova AR, Alekseev AY, Kuratieva NV, Eltsov IV, Yanshole VV, Shestopalov AM, Ivanov AA, Shestopalov MA. Water-Soluble Polyoxometal Clusters of Molybdenum (V) with Pyrazole and Triazole: Synthesis and Study of Cytotoxicity and Antiviral Activity. Molecules 2023; 28:8079. [PMID: 38138569 PMCID: PMC10745505 DOI: 10.3390/molecules28248079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/02/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Among well-studied and actively developing compounds are polyoxometalates (POMs), which show application in many fields. Extending this class of compounds, we introduce a new subclass of polyoxometal clusters (POMCs) [Mo12O28(μ-L)8]4- (L = pyrazolate (pz) or triazolate (1,2,3-trz or 1,2,4-trz)), structurally similar to POM, but containing binuclear Mo2O4 clusters linked by bridging oxo- and organic ligands. The complexes obtained by ampoule synthesis from the binuclear cluster [Mo2O4(C2O4)2(H2O)2]2- in a melt of an organic ligand are soluble and stable in aqueous solutions. In addition to the detailed characterization in solid state and in aqueous solution, the biological properties of the compounds on normal and cancer cells were investigated, and antiviral activity against influenza A virus (subtype H5N1) was demonstrated.
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Affiliation(s)
- Anna V. Konkova
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Iulia V. Savina
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Darya V. Evtushok
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Tatiana N. Pozmogova
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Maria V. Solomatina
- Research Institute of Virology, Federal Research Center of Fundamental and Translational Medicine, 2 Timakova St, Novosibirsk 630117, Russia; (M.V.S.); (A.R.N.); (A.Y.A.); (A.M.S.)
| | - Alina R. Nokhova
- Research Institute of Virology, Federal Research Center of Fundamental and Translational Medicine, 2 Timakova St, Novosibirsk 630117, Russia; (M.V.S.); (A.R.N.); (A.Y.A.); (A.M.S.)
| | - Alexander Y. Alekseev
- Research Institute of Virology, Federal Research Center of Fundamental and Translational Medicine, 2 Timakova St, Novosibirsk 630117, Russia; (M.V.S.); (A.R.N.); (A.Y.A.); (A.M.S.)
- Research Institute of Applied Ecology, Dagestan State University, 43a Gadzhiyeva St, Makhachkala 367000, Russia
| | - Natalia V. Kuratieva
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Ilia V. Eltsov
- Department of Natural Sciences, Novosibirsk State University, 2 Pirogova Str., Novosibirsk 630090, Russia;
| | - Vadim V. Yanshole
- International Tomography Center SB RAS, 3a Institutskaya Str., Novosibirsk 630090, Russia;
- Department of Physics, Novosibirsk State University, 1 Pirogova St., Novosibirsk 630090, Russia
| | - Aleksander M. Shestopalov
- Research Institute of Virology, Federal Research Center of Fundamental and Translational Medicine, 2 Timakova St, Novosibirsk 630117, Russia; (M.V.S.); (A.R.N.); (A.Y.A.); (A.M.S.)
- Research Institute of Applied Ecology, Dagestan State University, 43a Gadzhiyeva St, Makhachkala 367000, Russia
| | - Anton A. Ivanov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
| | - Michael A. Shestopalov
- Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Acad. Lavrentiev Ave., Novosibirsk 630090, Russia; (A.V.K.); (I.V.S.); (D.V.E.); (T.N.P.); (N.V.K.); (M.A.S.)
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Williams T, McCaw JM, Osborne JM. Choice of spatial discretisation influences the progression of viral infection within multicellular tissues. J Theor Biol 2023; 573:111592. [PMID: 37558160 DOI: 10.1016/j.jtbi.2023.111592] [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: 02/20/2023] [Revised: 06/16/2023] [Accepted: 08/02/2023] [Indexed: 08/11/2023]
Abstract
There has been an increasing recognition of the utility of models of the spatial dynamics of viral spread within tissues. Multicellular models, where cells are represented as discrete regions of space coupled to a virus density surface, are a popular approach to capture these dynamics. Conventionally, such models are simulated by discretising the viral surface and depending on the rate of viral diffusion and other considerations, a finer or coarser discretisation may be used. The impact that this choice may have on the behaviour of the system has not been studied. Here we demonstrate that under realistic parameter regimes - where viral diffusion is small enough to support the formation of familiar ring-shaped infection plaques - the choice of spatial discretisation of the viral surface can qualitatively change key model outcomes including the time scale of infection. Importantly, we show that the choice between implementing viral spread as a cell-scale process, or as a high-resolution converged PDE can generate distinct model outcomes, which raises important conceptual questions about the strength of assumptions underpinning the spatial structure of the model. We investigate the mechanisms driving these discretisation artefacts, the impacts they may have on model predictions, and provide guidance on the design and implementation of spatial and especially multicellular models of viral dynamics. We obtain our results using the simplest TIV construct for the viral dynamics, and therefore anticipate that the important effects we describe will also influence model predictions in more complex models of virus-cell-immune system interactions. This analysis will aid in the construction of models for robust and biologically realistic modelling and inference.
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Affiliation(s)
- Thomas Williams
- School of Mathematics and Statistics, University of Melbourne, Australia
| | - James M McCaw
- School of Mathematics and Statistics, University of Melbourne, Australia; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Australia
| | - James M Osborne
- School of Mathematics and Statistics, University of Melbourne, Australia.
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Zhang Z, Jiang Z, Deng T, Zhang J, Liu B, Liu J, Qiu R, Zhang Q, Li X, Nian X, Hong Y, Li F, Peng F, Zhao W, Xia Z, Huang S, Liang S, Chen J, Li C, Yang X. Preclinical immunogenicity assessment of a cell-based inactivated whole-virion H5N1 influenza vaccine. Open Life Sci 2022; 17:1282-1295. [PMID: 36249527 PMCID: PMC9518664 DOI: 10.1515/biol-2022-0478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 07/06/2022] [Accepted: 07/17/2022] [Indexed: 11/15/2022] Open
Abstract
In influenza vaccine development, Madin–Darby canine kidney (MDCK) cells provide multiple advantages, including large-scale production and egg independence. Several cell-based influenza vaccines have been approved worldwide. We cultured H5N1 virus in a serum-free MDCK cell suspension. The harvested virus was manufactured into vaccines after inactivation and purification. The vaccine effectiveness was assessed in the Wuhan Institute of Biological Products BSL2 facility. The pre- and postvaccination mouse serum titers were determined using the microneutralization and hemagglutination inhibition tests. The immunological responses induced by vaccine were investigated using immunological cell classification, cytokine expression quantification, and immunoglobulin G (IgG) subtype classification. The protective effect of the vaccine in mice was evaluated using challenge test. Antibodies against H5N1 in rats lasted up to 8 months after the first dose. Compared with those of the placebo group, the serum titer of vaccinated mice increased significantly, Th1 and Th2 cells were activated, and CD8+ T cells were activated in two dose groups. Furthermore, the challenge test showed that vaccination reduced the clinical symptoms and virus titer in the lungs of mice after challenge, indicating a superior immunological response. Notably, early after vaccination, considerably increased interferon-inducible protein-10 (IP-10) levels were found, indicating improved vaccine-induced innate immunity. However, IP-10 is an adverse event marker, which is a cause for concern. Overall, in the case of an outbreak, the whole-virion H5N1 vaccine should provide protection.
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Affiliation(s)
- Zhegang Zhang
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Zheng Jiang
- National Institute of Food and Drug Control , Beijing , 100050 , China
| | - Tao Deng
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Jiayou Zhang
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Bo Liu
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Jing Liu
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Ran Qiu
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Qingmei Zhang
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Xuedan Li
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Xuanxuan Nian
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Yue Hong
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Fang Li
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Feixia Peng
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Wei Zhao
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
| | - Zhiwu Xia
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
| | - Shihe Huang
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
| | | | - Jinhua Chen
- Viral Vaccines Research and Development Department 2, Wuhan Institute of Biological Products Co., LTD , Wuhan , 430207 , China
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
| | - Changgui Li
- National Institute of Food and Drug Control , Beijing , 100050 , China
| | - Xiaoming Yang
- National Engineering Technology Research Center of Combination Vaccines, China National Biotec Group , Wuhan , 430207 , China
- China National Biotec Group , Beijing , 100029 , China
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Shi Y, Lu Y, You J. Antigen transfer and its effect on vaccine-induced immune amplification and tolerance. Am J Cancer Res 2022; 12:5888-5913. [PMID: 35966588 PMCID: PMC9373810 DOI: 10.7150/thno.75904] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/15/2022] [Indexed: 12/13/2022] Open
Abstract
Antigen transfer refers to the process of intercellular information exchange, where antigenic components including nucleic acids, antigen proteins/peptides and peptide-major histocompatibility complexes (p-MHCs) are transmitted from donor cells to recipient cells at the thymus, secondary lymphoid organs (SLOs), intestine, allergic sites, allografts, pathological lesions and vaccine injection sites via trogocytosis, gap junctions, tunnel nanotubes (TNTs), or extracellular vesicles (EVs). In the context of vaccine inoculation, antigen transfer is manipulated by the vaccine type and administration route, which consequently influences, even alters the immunological outcome, i.e., immune amplification and tolerance. Mainly focused on dendritic cells (DCs)-based antigen receptors, this review systematically introduces the biological process, molecular basis and clinical manifestation of antigen transfer.
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Affiliation(s)
- Yingying Shi
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Yichao Lu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
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Ganti K, Han J, Manicassamy B, Lowen AC. Rab11a mediates cell-cell spread and reassortment of influenza A virus genomes via tunneling nanotubes. PLoS Pathog 2021; 17:e1009321. [PMID: 34473799 PMCID: PMC8443049 DOI: 10.1371/journal.ppat.1009321] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 09/15/2021] [Accepted: 08/22/2021] [Indexed: 11/18/2022] Open
Abstract
Influenza A virus [IAV] genomes comprise eight negative strand RNAs packaged into virions in the form of viral ribonucleoproteins [vRNPs]. Rab11a plays a crucial role in the transport of vRNPs from the nucleus to the plasma membrane via microtubules, allowing assembly and virus production. Here, we identify a novel function for Rab11a in the inter-cellular transport of IAV vRNPs using tunneling nanotubes [TNTs]as molecular highways. TNTs are F-Actin rich tubules that link the cytoplasm of nearby cells. In IAV-infected cells, Rab11a was visualized together with vRNPs in these actin-rich intercellular connections. To better examine viral spread via TNTs, we devised an infection system in which conventional, virion-mediated, spread was not possible. Namely, we generated HA-deficient reporter viruses which are unable to produce progeny virions but whose genomes can be replicated and trafficked. In this system, vRNP transfer to neighboring cells was observed and this transfer was found to be dependent on both actin and Rab11a. Generation of infectious virus via TNT transfer was confirmed using donor cells infected with HA-deficient virus and recipient cells stably expressing HA protein. Mixing donor cells infected with genetically distinct IAVs furthermore revealed the potential for Rab11a and TNTs to serve as a conduit for genome mixing and reassortment in IAV infections. These data therefore reveal a novel role for Rab11a in the IAV life cycle, which could have significant implications for within-host spread, genome reassortment and immune evasion.
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Affiliation(s)
- Ketaki Ganti
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America
| | - Julianna Han
- Department of Microbiology, University of Chicago, Chicago, Illinois, United States of America
| | - Balaji Manicassamy
- Department of Microbiology and Immunology, University of Iowa School of Medicine, Iowa City, Iowa, United States of America
| | - Anice C. Lowen
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, United States of America
- Emory-UGA Centers of Excellence for Influenza Research and Surveillance [CEIRS]
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Wang WH, Thitithanyanont A, Urbina AN, Wang SF. Emerging and Re-Emerging Diseases. Pathogens 2021; 10:827. [PMID: 34209374 PMCID: PMC8308756 DOI: 10.3390/pathogens10070827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 06/26/2021] [Accepted: 06/29/2021] [Indexed: 11/17/2022] Open
Abstract
Throughout history, infectious diseases have vastly impacted human civilization [...].
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Affiliation(s)
- Wen-Hung Wang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-H.W.); (A.N.U.)
- Division of Infectious Disease, Department of Internal Medicine, Kaohsiung Medical, University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Arunee Thitithanyanont
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand;
| | - Aspiro Nayim Urbina
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-H.W.); (A.N.U.)
| | - Sheng-Fan Wang
- Center for Tropical Medicine and Infectious Disease, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (W.-H.W.); (A.N.U.)
- 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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