1
|
Meidaninikjeh S, Mohammadi P, Elikaei A. A simplified method of bacteriophage preparation for transmission electron microscope. J Virol Methods 2024; 328:114951. [PMID: 38750823 DOI: 10.1016/j.jviromet.2024.114951] [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: 12/09/2023] [Revised: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/21/2024]
Abstract
Bacteriophages are viruses that infect bacteria. Researchers use different methods to study the characteristics of bacteriophages. Transmission electron microscope (TEM) is considered the best method to analyze these characteristics. However, the quality of TEM micrographs is significantly influenced by the preparation methods used to prepare the bacteriophages sample. In this study, researchers compared two different methods for preparing the bacteriophage samples. In one method was used SM buffer, while in the other used deionized water. The results were analyzed by TEM and compared with each other. Additionally, the viability of bacteriophage in deionized water and SM buffer at 4°C was determined through plaque assay within 72 hours. TEM micrographs showed that the quality of bacteriophage sample prepared with deionized water is superior to those prepared with SM buffer. Furthermore, the titer of the bacteriophages did not show a significant reduction during 72 hours in both SM and deionized water. In conclusion, the results suggested that preparation method can significantly impact the quality of TEM micrographs. Using sterile deionized water for the preparation of bacteriophages is a simple way to improve the quality of TEM micrographs and it is advisable to send the samples to the laboratory within 72 hours.
Collapse
Affiliation(s)
- Sepideh Meidaninikjeh
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Parisa Mohammadi
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran; Research Center for Applied Microbiology and Microbial Biotechnology, Alzahra University, Tehran, Iran.
| | - Ameneh Elikaei
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran; Research Center for Applied Microbiology and Microbial Biotechnology, Alzahra University, Tehran, Iran
| |
Collapse
|
2
|
Vieira DFB, Bandeira DM, da Silva MAN, de Almeida ALT, Araújo M, Machado AB, Tort LFL, Nacife VP, Siqueira MM, Motta FC, Pauvolid-Corrêa A, Barth OM. Comparative analysis of SARS-CoV-2 variants Alpha (B.1.1.7), Gamma (P.1), Zeta (P.2) and Delta (B.1.617.2) in Vero-E6 cells: ultrastructural characterization of cytopathology and replication kinetics. Braz J Infect Dis 2024; 28:103706. [PMID: 38081327 PMCID: PMC10776915 DOI: 10.1016/j.bjid.2023.103706] [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: 09/04/2023] [Revised: 11/17/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
This study compares the effects of virus-cell interactions among SARS-CoV-2 variants of concern (VOCs) isolated in Brazil in 2021, hypothesizing a correlation between cellular alterations and mortality and between viral load and transmissibility. For this purpose, reference isolates of Alpha, Gamma, Zeta, and Delta variants were inoculated into monolayers of Vero-E6 cells. Viral RNA was quantified in cell supernatants by RT‒PCR, and infected cells were analyzed by Transmission Electron Microscopy (TEM) for qualitative and quantitative evaluation of cellular changes 24, 48, and 72 hours postinfection (hpi). Ultrastructural analyses showed that all variants of SARS-CoV-2 altered the structure and function of mitochondria, nucleus, and rough endoplasmic reticulum of cells. Monolayers infected with the Delta variant showed the highest number of modified cells and the greatest statistically significant differences compared to those of other variants. Viral particles were observed in the cytosol and the cell membrane in 100 % of the cells at 48 hpi. Alpha showed the highest mean particle diameter (79 nm), and Gamma and Delta were the smallest (75 nm). Alpha and Gamma had the highest particle frequency per field at 48 hpi, while the same was observed for Zeta and Delta at 72 hpi and 24 hpi, respectively. The cycle threshold of viral RNA varied among the target protein, VOC, and time of infection. The findings presented here demonstrate that all four VOCs evaluated caused ultrastructural changes in Vero-E6 cells, which were more prominent when infection occured with the Delta variant.
Collapse
Affiliation(s)
- Debora Ferreira Barreto Vieira
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Morfologia e Morfogênese Viral, Rio de Janeiro, RJ, Brazil.
| | - Derick Mendes Bandeira
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Morfologia e Morfogênese Viral, Rio de Janeiro, RJ, Brazil
| | - Marcos Alexandre Nunes da Silva
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Morfologia e Morfogênese Viral, Rio de Janeiro, RJ, Brazil
| | - Ana Luisa Teixeira de Almeida
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Morfologia e Morfogênese Viral, Rio de Janeiro, RJ, Brazil
| | - Mia Araújo
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil
| | - Ana Beatriz Machado
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil
| | - Luis Fernando Lopez Tort
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil; Universidad de la República, Centro Universitario Regional - Litoral Norte, Laboratório de Virologia Molecular, Departamento de Ciências Biológicas, Salto, Uruguai
| | - Valéria Pereira Nacife
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil
| | - Marilda M Siqueira
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil
| | - Fernando Couto Motta
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil
| | - Alex Pauvolid-Corrêa
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Vírus Respiratórios, Exantemáticos, Enterovírus e Emergências Virais, Rio de Janeiro, RJ, Brazil; Universidade Federal de Viçosa, Departamento de Veterinária, Laboratório de Virologia Veterinária de Viçosa, Viçosa, MG, Brazil
| | - Ortrud Monika Barth
- Fundação Oswaldo Cruz (Fiocruz), Instituto Oswaldo Cruz, Laboratório de Morfologia e Morfogênese Viral, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
3
|
Meinhardt J, Streit S, Dittmayer C, Manitius RV, Radbruch H, Heppner FL. The neurobiology of SARS-CoV-2 infection. Nat Rev Neurosci 2024; 25:30-42. [PMID: 38049610 DOI: 10.1038/s41583-023-00769-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/01/2023] [Indexed: 12/06/2023]
Abstract
Worldwide, over 694 million people have been infected with SARS-CoV-2, with an estimated 55-60% of those infected developing COVID-19. Since the beginning of the pandemic in December 2019, different variants of concern have appeared and continue to occur. With the emergence of different variants, an increasing rate of vaccination and previous infections, the acute neurological symptomatology of COVID-19 changed. Moreover, 10-45% of individuals with a history of SARS-CoV-2 infection experience symptoms even 3 months after disease onset, a condition that has been defined as 'post-COVID-19' by the World Health Organization and that occurs independently of the virus variant. The pathomechanisms of COVID-19-related neurological complaints have become clearer during the past 3 years. To date, there is no overt - that is, truly convincing - evidence for SARS-CoV-2 particles in the brain. In this Review, we put special emphasis on discussing the methodological difficulties of viral detection in CNS tissue and discuss immune-based (systemic and central) effects contributing to COVID-19-related CNS affection. We sequentially review the reported changes to CNS cells in COVID-19, starting with the blood-brain barrier and blood-cerebrospinal fluid barrier - as systemic factors from the periphery appear to primarily influence barriers and conduits - before we describe changes in brain parenchymal cells, including microglia, astrocytes, neurons and oligodendrocytes as well as cerebral lymphocytes. These findings are critical to understanding CNS affection in acute COVID-19 and post-COVID-19 in order to translate these findings into treatment options, which are still very limited.
Collapse
Affiliation(s)
- Jenny Meinhardt
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Simon Streit
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Carsten Dittmayer
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Regina V Manitius
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany
| | - Helena Radbruch
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.
| | - Frank L Heppner
- Department of Neuropathology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.
- Cluster of Excellence, NeuroCure, Berlin, Germany.
- German Center for Neurodegenerative Diseases (DZNE) Berlin, Berlin, Germany.
| |
Collapse
|
4
|
Cuervo A, Losana P, Carrascosa JL. Observation of Bacteriophage Ultrastructure by Cryo-Electron Microscopy. Methods Mol Biol 2024; 2734:13-25. [PMID: 38066360 DOI: 10.1007/978-1-0716-3523-0_2] [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: 12/18/2023]
Abstract
Transmission electron microscopy (TEM) is an ideal method to observe and determine the structure of bacteriophages. From early studies by negative staining to the present atomic structure models derived from cryo-TEM, bacteriophage detection, classification, and structure determination have been mostly done by electron microscopy. Although embedding in metal salts has been a routine method for virus observation for many years, the preservation of bacteriophages in a thin layer of fast frozen buffer has proven to be the most convenient preparation method for obtaining images using cryo-electron microscopy (cryo-EM). In this technique, frozen samples are observed at liquid nitrogen temperature, and the images are acquired using different recording media. The incorporation of direct electron detectors has been a fundamental step in achieving atomic resolution images of a number of viruses. These projection images can be numerically combined using different approaches to render a three-dimensional model of the virus. For those viral components exhibiting any symmetry, averaging can nowadays achieve atomic structures in most cases. Image processing methods have also evolved to improve the resolution in asymmetric viral components or regions showing different types of symmetries (symmetry mismatch).
Collapse
Affiliation(s)
- Ana Cuervo
- Department of Structure of Macromolecules, Centro Nacional de Biotecnología, CSIC, Madrid, Spain.
| | - Patricia Losana
- Department of Structure of Macromolecules, Centro Nacional de Biotecnología, CSIC, Madrid, Spain
| | - José L Carrascosa
- Department of Structure of Macromolecules, Centro Nacional de Biotecnología, CSIC, Madrid, Spain
| |
Collapse
|
5
|
Xia Q, Guo Z, Zong H, Seitz S, Yurdakul C, Ünlü MS, Wang L, Connor JH, Cheng JX. Single virus fingerprinting by widefield interferometric defocus-enhanced mid-infrared photothermal microscopy. Nat Commun 2023; 14:6655. [PMID: 37863905 PMCID: PMC10589364 DOI: 10.1038/s41467-023-42439-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 10/11/2023] [Indexed: 10/22/2023] Open
Abstract
Clinical identification and fundamental study of viruses rely on the detection of viral proteins or viral nucleic acids. Yet, amplification-based and antigen-based methods are not able to provide precise compositional information of individual virions due to small particle size and low-abundance chemical contents (e.g., ~ 5000 proteins in a vesicular stomatitis virus). Here, we report a widefield interferometric defocus-enhanced mid-infrared photothermal (WIDE-MIP) microscope for high-throughput fingerprinting of single viruses. With the identification of feature absorption peaks, WIDE-MIP reveals the contents of viral proteins and nucleic acids in single DNA vaccinia viruses and RNA vesicular stomatitis viruses. Different nucleic acid signatures of thymine and uracil residue vibrations are obtained to differentiate DNA and RNA viruses. WIDE-MIP imaging further reveals an enriched β sheet components in DNA varicella-zoster virus proteins. Together, these advances open a new avenue for compositional analysis of viral vectors and elucidating protein function in an assembled virion.
Collapse
Affiliation(s)
- Qing Xia
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Zhongyue Guo
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Haonan Zong
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Scott Seitz
- Department of Microbiology and National Infectious Diseases Laboratories, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Celalettin Yurdakul
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - M Selim Ünlü
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - Le Wang
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA
| | - John H Connor
- Department of Microbiology and National Infectious Diseases Laboratories, Boston University School of Medicine, Boston, MA, 02118, USA.
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA, 02215, USA.
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
- Photonics Center, Boston University, Boston, MA, 02215, USA.
| |
Collapse
|
6
|
Rahim MA, Ayub H, Sehrish A, Ambreen S, Khan FA, Itrat N, Nazir A, Shoukat A, Shoukat A, Ejaz A, Özogul F, Bartkiene E, Rocha JM. Essential Components from Plant Source Oils: A Review on Extraction, Detection, Identification, and Quantification. Molecules 2023; 28:6881. [PMID: 37836725 PMCID: PMC10574037 DOI: 10.3390/molecules28196881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Oils derived from plant sources, mainly fixed oils from seeds and essential oil from other parts of the plant, are gaining interest as they are the rich source of beneficial compounds that possess potential applications in different industries due to their preventive and therapeutic actions. The essential oils are used in food, medicine, cosmetics, and agriculture industries as they possess antimicrobial, anticarcinogenic, anti-inflammatory and immunomodulatory properties. Plant based oils contain polyphenols, phytochemicals, and bioactive compounds which show high antioxidant activity. The extractions of these oils are a crucial step in terms of the yield and quality attributes of plant oils. This review paper outlines the different modern extraction techniques used for the extraction of different seed oils, including microwave-assisted extraction (MAE), pressurized liquid extraction (PLE), cold-pressed extraction (CPE), ultrasound-assisted extraction (UAE), supercritical-fluid extraction (SFE), enzyme-assisted extraction (EAE), and pulsed electric field-assisted extraction (PEF). For the identification and quantification of essential and bioactive compounds present in seed oils, different modern techniques-such as high-performance liquid chromatography (HPLC), gas chromatography-mass spectrometry (GC-MS), Fourier transform infrared spectroscopy (FTIR), gas chromatography-infrared spectroscopy (GC-IR), atomic fluorescence spectroscopy (AFS), and electron microscopy (EM)-are highlighted in this review along with the beneficial effects of these essential components in different in vivo and in vitro studies and in different applications. The primary goal of this research article is to pique the attention of researchers towards the different sources, potential uses and applications of oils in different industries.
Collapse
Affiliation(s)
- Muhammad Abdul Rahim
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan; (F.A.K.); (A.E.)
| | - Hudda Ayub
- National Institute of Food Science & Technology, University of Agriculture, Faisalabad 38000, Pakistan; (H.A.); (A.S.); (A.S.)
| | - Aqeela Sehrish
- Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA;
| | - Saadia Ambreen
- University Institute of Food Science and Technology, The University of Lahore, Lahore 54590, Pakistan;
| | - Faima Atta Khan
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan; (F.A.K.); (A.E.)
| | - Nizwa Itrat
- Department of Nutrition and Dietetics, The University of Faisalabad, Faisalabad 38000, Pakistan; (N.I.); (A.N.)
| | - Anum Nazir
- Department of Nutrition and Dietetics, The University of Faisalabad, Faisalabad 38000, Pakistan; (N.I.); (A.N.)
| | - Aurbab Shoukat
- National Institute of Food Science & Technology, University of Agriculture, Faisalabad 38000, Pakistan; (H.A.); (A.S.); (A.S.)
| | - Amna Shoukat
- National Institute of Food Science & Technology, University of Agriculture, Faisalabad 38000, Pakistan; (H.A.); (A.S.); (A.S.)
| | - Afaf Ejaz
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan; (F.A.K.); (A.E.)
| | - Fatih Özogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Cukurova University, Balcali, Adana 01330, Türkiye;
- Biotechnology Research and Application Center, Cukurova University, Balcali, Adana 01330, Türkiye
| | - Elena Bartkiene
- Department of Food Safety and Quality, Faculty of Veterinary, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania;
- Faculty of Animal Sciences, Institute of Animal Rearing Technologies, Lithuanian University of Health Sciences, Tilzes Str. 18, LT-47181 Kaunas, Lithuania
| | - João Miguel Rocha
- Universidade Católica Portuguesa, CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
- ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal
| |
Collapse
|
7
|
Xiao C, Wang J, Yang S, Heng M, Su J, Xiao H, Song J, Li W. VISN: virus instance segmentation network for TEM images using deep attention transformer. Brief Bioinform 2023; 24:bbad373. [PMID: 37903415 DOI: 10.1093/bib/bbad373] [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: 04/24/2023] [Revised: 08/02/2023] [Accepted: 09/29/2023] [Indexed: 11/01/2023] Open
Abstract
The identification of viruses from negative staining transmission electron microscopy (TEM) images has mainly depended on experienced experts. Recent advances in artificial intelligence have enabled virus recognition using deep learning techniques. However, most of the existing methods only perform virus classification or semantic segmentation, and few studies have addressed the challenge of virus instance segmentation in TEM images. In this paper, we focus on the instance segmentation of severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) and other respiratory viruses and provide experts with more effective information about viruses. We propose an effective virus instance segmentation network based on the You Only Look At CoefficienTs backbone, which integrates the Swin Transformer, dense connections and the coordinate-spatial attention mechanism, to identify SARS-CoV-2, H1N1 influenza virus, respiratory syncytial virus, Herpes simplex virus-1, Human adenovirus type 5 and Vaccinia virus. We also provide a public TEM virus dataset and conduct extensive comparative experiments. Our method achieves a mean average precision score of 83.8 and F1 score of 0.920, outperforming other state-of-the-art instance segmentation algorithms. The proposed automated method provides virologists with an effective approach for recognizing and identifying SARS-CoV-2 and assisting in the diagnosis of viruses. Our dataset and code are accessible at https://github.com/xiaochiHNU/Virus-Instance-Segmentation-Transformer-Network.
Collapse
Affiliation(s)
- Chi Xiao
- State key laboratory of digital medical engineering, School of Biomedical Engineering, Hainan University, 570228, Haikou, China
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, 570228, Haikou, China
| | - Jun Wang
- Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, 100029, Beijing, China
| | - Shenrong Yang
- State key laboratory of digital medical engineering, School of Biomedical Engineering, Hainan University, 570228, Haikou, China
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, 570228, Haikou, China
| | - Minxin Heng
- State key laboratory of digital medical engineering, School of Biomedical Engineering, Hainan University, 570228, Haikou, China
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, 570228, Haikou, China
| | - Junyi Su
- State key laboratory of digital medical engineering, School of Biomedical Engineering, Hainan University, 570228, Haikou, China
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, 570228, Haikou, China
| | - Hao Xiao
- Key Laboratory for Matter Microstructure and Function of Hunan Province, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control, School of Physics and Electronics, Hunan Normal University, 410081, Changsha, China
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Beijing, China
| | - Jingdong Song
- National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Beijing, China
- NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206, Beijing, China
| | - Weifu Li
- College of Informatics, Huazhong Agricultural University, 430070, Wuhan, China
| |
Collapse
|
8
|
Papakonstantinou GI, Psalla D, Pourlis A, Stylianaki I, Athanasiou LV, Tzika E, Meletis E, Kostoulas P, Maragkakis G, Christodoulopoulos G, Papaioannou N, Papatsiros VG. Histopathological Pulmonary Lesions in 1st-Day Newborn Piglets Derived from PRRSV-1 MLV Vaccinated Sows at the Last Stage of Gestation. Life (Basel) 2023; 13:1609. [PMID: 37511984 PMCID: PMC10381811 DOI: 10.3390/life13071609] [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: 06/30/2023] [Revised: 07/20/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
Modified live virus (MLV) vaccines for the control of porcine respiratory and reproductive syndrome virus (PRRSV) have been associated with the vertical and horizontal transmission of vaccine viruses. The present study aimed to describe pathological lung lesions in piglets born by gilts vaccinated with PRRSV-1 MLV. In total, 25 gilts were vaccinated at late gestation (100th day) and were divided into five groups according to the different vaccines (Vac) used: no vaccine-control group, Vac-1-strain DV, Vac-2-strain VP-046 BIS, Vac-3-strain 94881, Vac-4-strain 96V198. Within the first 0-9 h of the farrowing, blood samples were collected from all newborn piglets and lung samples were exanimated grossly, histopathologically and with scanning electron microscopy. PRRSV (RT-PCR-positive) and antibodies were detected in the serum of piglets from gilts vaccinated with Vac-2. In these piglets, moderate to severe interstitial pneumonia with thickened alveolar septa was noticed. Type II pneumocyte hyperplasia was also observed. The rest of the trial piglets showed unremarkable lung lesions. Phylogenetic analysis revealed the 98.7% similarity of the PRRSV field strain (GR 2019-1) to the PRRS MLV vaccine strain VP-046 BIS. In conclusion, the Vac-2 PRRSV vaccine strain can act as an infectious strain when vaccination is administrated at late gestation, causing lung lesions.
Collapse
Affiliation(s)
- Georgios I. Papakonstantinou
- Clinic of Medicine, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (G.I.P.); (L.V.A.); (G.M.)
| | - Dimitra Psalla
- Laboratory of Pathology, Faculty of Health Sciences, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (D.P.); (I.S.); (N.P.)
| | - Aris Pourlis
- Laboratory of Anatomy, Histology & Embryology, Veterinary School, University of Thessaly, 43100 Karditsa, Greece;
| | - Ioanna Stylianaki
- Laboratory of Pathology, Faculty of Health Sciences, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (D.P.); (I.S.); (N.P.)
| | - Labrini V. Athanasiou
- Clinic of Medicine, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (G.I.P.); (L.V.A.); (G.M.)
| | - Eleni Tzika
- Farm Animals Clinic, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece;
| | - Eleftherios Meletis
- Laboratory of Epidemiology & Artificial Intelligence, Faculty of Public Health, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (E.M.); (P.K.)
| | - Polychronis Kostoulas
- Laboratory of Epidemiology & Artificial Intelligence, Faculty of Public Health, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (E.M.); (P.K.)
| | - George Maragkakis
- Clinic of Medicine, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (G.I.P.); (L.V.A.); (G.M.)
| | - Georgios Christodoulopoulos
- Department of Animal Science, Agricultural University of Athens, 75 Iera Odos Street, Votanikos, 11855 Athens, Greece;
| | - Nikolaos Papaioannou
- Laboratory of Pathology, Faculty of Health Sciences, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (D.P.); (I.S.); (N.P.)
| | - Vasileios G. Papatsiros
- Clinic of Medicine, Faculty of Veterinary Medicine, School of Health Sciences, University of Thessaly, 43100 Karditsa, Greece; (G.I.P.); (L.V.A.); (G.M.)
| |
Collapse
|
9
|
Androvic P, Schifferer M, Perez Anderson K, Cantuti-Castelvetri L, Jiang H, Ji H, Liu L, Gouna G, Berghoff SA, Besson-Girard S, Knoferle J, Simons M, Gokce O. Spatial Transcriptomics-correlated Electron Microscopy maps transcriptional and ultrastructural responses to brain injury. Nat Commun 2023; 14:4115. [PMID: 37433806 DOI: 10.1038/s41467-023-39447-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 06/14/2023] [Indexed: 07/13/2023] Open
Abstract
Understanding the complexity of cellular function within a tissue necessitates the combination of multiple phenotypic readouts. Here, we developed a method that links spatially-resolved gene expression of single cells with their ultrastructural morphology by integrating multiplexed error-robust fluorescence in situ hybridization (MERFISH) and large area volume electron microscopy (EM) on adjacent tissue sections. Using this method, we characterized in situ ultrastructural and transcriptional responses of glial cells and infiltrating T-cells after demyelinating brain injury in male mice. We identified a population of lipid-loaded "foamy" microglia located in the center of remyelinating lesion, as well as rare interferon-responsive microglia, oligodendrocytes, and astrocytes that co-localized with T-cells. We validated our findings using immunocytochemistry and lipid staining-coupled single-cell RNA sequencing. Finally, by integrating these datasets, we detected correlations between full-transcriptome gene expression and ultrastructural features of microglia. Our results offer an integrative view of the spatial, ultrastructural, and transcriptional reorganization of single cells after demyelinating brain injury.
Collapse
Affiliation(s)
- Peter Androvic
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Martina Schifferer
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
| | - Katrin Perez Anderson
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Ludovico Cantuti-Castelvetri
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany
| | - Hanyi Jiang
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
| | - Hao Ji
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Lu Liu
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Garyfallia Gouna
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany
| | - Stefan A Berghoff
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany
| | - Simon Besson-Girard
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
| | - Johanna Knoferle
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany
| | - Mikael Simons
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE), Munich, Germany
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany
- Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany
| | - Ozgun Gokce
- Institute for Stroke and Dementia Research, University Hospital of Munich, LMU Munich, Munich, Germany.
- Munich Cluster of Systems Neurology (SyNergy), Munich, Germany.
- Department of Neurodegenerative Diseases and Geriatric Psychiatry, University Hospital Bonn, Bonn, Germany.
| |
Collapse
|
10
|
Yin L, Li Y, Zhang W, Han X, Wu Q, Xie Y, Fan J, Ma L. Detection Methods for Foodborne Viruses: Current State-of-Art and Future Perspectives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3551-3563. [PMID: 36657010 DOI: 10.1021/acs.jafc.2c06537] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Foodborne viruses have been recognized as important threats to food safety and human health. Rapid and accurate detection is one of the most crucial measures for food safety control. With the development of biology, chemistry, nanoscience, and related interdisciplines, detection strategies have been devised and advanced continuously. This review mainly focuses on the progress of detection methods for foodborne viruses. The current detection methods for foodborne viruses are summarized, including traditional electron microscopy and cultural isolation, immunoassay, molecular technology, biosensors, and newly emerging CRISPR/Cas-based detection technology. Furthermore, a comparison of the detection methods was objectively discussed. This review provides a comprehensive account of foodborne virus detection methods from fundamentals to state-of-the-art and illustrates the advantages and disadvantages of the current methods and proposes the future trends and directions for foodborne virus detection. It is hoped that this review can update current knowledge and present blueprints in order to accelerate futuristic development.
Collapse
Affiliation(s)
- Lijuan Yin
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yaru Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Wenlu Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Xiao Han
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Qiankun Wu
- Academy of National Food and Strategic Reserves Administration, Beijing, 100037, China
| | - Yanyan Xie
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jingjing Fan
- Beijing Kwinbon Biotechnology Co., Ltd, Beijing, 102200, China
| | - Long Ma
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Microbiology, Ministry of Education, Tianjin Key Laboratory of Industry Microbiology, National and Local United Engineering Lab of Metabolic Control Fermentation Technology, China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, China
| |
Collapse
|
11
|
Shi J, Zhang Y, Yang M. Recent development of microfluidics-based platforms for respiratory virus detection. BIOMICROFLUIDICS 2023; 17:024104. [PMID: 37035101 PMCID: PMC10076069 DOI: 10.1063/5.0135778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
With the global outbreak of SARS-CoV-2, the inadequacies of current detection technology for respiratory viruses have been recognized. Rapid, portable, accurate, and sensitive assays are needed to expedite diagnosis and early intervention. Conventional methods for detection of respiratory viruses include cell culture-based assays, serological tests, nucleic acid detection (e.g., RT-PCR), and direct immunoassays. However, these traditional methods are often time-consuming, labor-intensive, and require laboratory facilities, which cannot meet the testing needs, especially during pandemics of respiratory diseases, such as COVID-19. Microfluidics-based techniques can overcome these demerits and provide simple, rapid, accurate, and cost-effective analysis of intact virus, viral antigen/antibody, and viral nucleic acids. This review aims to summarize the recent development of microfluidics-based techniques for detection of respiratory viruses. Recent advances in different types of microfluidic devices for respiratory virus diagnostics are highlighted, including paper-based microfluidics, continuous-flow microfluidics, and droplet-based microfluidics. Finally, the future development of microfluidic technologies for respiratory virus diagnostics is discussed.
Collapse
Affiliation(s)
- Jingyu Shi
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong SAR, People's Republic of China
| | - Yu Zhang
- Department of Mechanical and Automotive Engineering, Royal Melbourne Institute of Technology, Melbourne, VIC 3000, Australia
| | - Mo Yang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Kowloon 999077, Hong Kong SAR, People's Republic of China
| |
Collapse
|
12
|
Bhalla N, Payam AF. Addressing the Silent Spread of Monkeypox Disease with Advanced Analytical Tools. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206633. [PMID: 36517107 DOI: 10.1002/smll.202206633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Indexed: 06/17/2023]
Abstract
Monkeypox disease is caused by a virus which belongs to the orthopoxvirus genus of the poxviridae family. This disease has recently spread out to several non-endemic countries. While some cases have been linked to travel from endemic regions, more recent infections are thought to have spread in the community without any travel links, raising the risks of a wider outbreak. This state of public health represents a highly unusual event which requires urgent surveillance. In this context, the opportunities and technological challenges of current bio/chemical sensors, nanomaterials, nanomaterial characterization instruments, and artificially intelligent biosystems collectively called "advanced analytical tools" are reviewed here, which will allow early detection, characterization, and inhibition of the monkeypox virus (MPXV) in the community and limit its expansion from endemic to pandemic. A summary of background information is also provided from biological and epidemiological perspective of monkeypox to support the scientific case for its holistic management using advanced analytical tools.
Collapse
Affiliation(s)
- Nikhil Bhalla
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, York St., BT15 1ED Belfast, Northern Ireland, UK
- Healthcare Technology Hub, Ulster University, York St., BT15 1ED Belfast, Northern Ireland, UK
| | - Amir Farokh Payam
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, Ulster University, York St., BT15 1ED Belfast, Northern Ireland, UK
- Healthcare Technology Hub, Ulster University, York St., BT15 1ED Belfast, Northern Ireland, UK
| |
Collapse
|
13
|
Rafeeq MM, Habib AH, Nahhas AF, Binothman N, Aljadani M, Almulhim J, Sain ZM, Alam MZ, Alturki NA, Alam Q, Manish M, Singh RK. Targeting Kaposi's sarcoma associated herpesvirus encoded protease (ORF17) by a lysophosphatidic acid molecule for treating KSHV associated diseases. Front Cell Dev Biol 2023; 11:1060156. [PMID: 36733461 PMCID: PMC9888664 DOI: 10.3389/fcell.2023.1060156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/05/2023] [Indexed: 01/19/2023] Open
Abstract
Kaposi's sarcoma associated herpesvirus (KSHV) is causative agent of Kaposi's sarcoma, Multicentric Castleman Disease and Pleural effusion lymphoma. KSHV-encoded ORF17 encodes a protease which cleaves -Ala-Ala-, -Ala-Ser- or -Ala-Thr-bonds. The protease plays an important role in assembly and maturation of new infective virions. In the present study, we investigated expression pattern of KSHV-encoded protease during physiologically allowed as well as chemically induced reactivation condition. The results showed a direct and proportionate relationship between ORF17 expression with reactivation time. We employed virtual screening on a large database of natural products to identify an inhibitor of ORF17 for its plausible targeting and restricting Kaposi's sarcoma associated herpesvirus assembly/maturation. A library of 307,814 compounds of biological origin (A total 481,799 structures) has been used as a screen library. 1-oleoyl-2-hydroxy-sn-glycero-3-phospho-(1'-myo-inositol) was highly effective against ORF17 in in-vitro experiments. The screened compound was tested for the cytotoxic effect and potential for inhibiting Kaposi's sarcoma associated herpesvirus production upon induced reactivation by hypoxia, TPA and butyric acid. Treatment of reactivated KSHV-positive cells with 1-oleoyl-2-hydroxy-sn-glycero-3-phospho-(1'-myo-inositol) resulted in significant reduction in the production of Kaposi's sarcoma associated herpesvirus. The study identified a lysophosphatidic acid molecule for alternate strategy to inhibit KSHV-encoded protease and target Kaposi's sarcoma associated herpesvirus associated malignancies.
Collapse
Affiliation(s)
- Misbahuddin M Rafeeq
- Department of Pharmacology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, KSA
| | - Alaa Hamed Habib
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, KSA
| | - Alaa F. Nahhas
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, KSA
| | - Najat Binothman
- Department of Chemistry, College of Sciences and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Majidah Aljadani
- Department of Chemistry, College of Sciences and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Jawaher Almulhim
- Department of Biological Sciences, King Faisal University, Alahsa, KSA
| | - Ziaullah M Sain
- Department of Microbiology, Faculty of Medicine, Rabigh, King Abdulaziz University, Jeddah, KSA
| | - Mohammad Zubair Alam
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia,Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Norah A Alturki
- Clinical Laboratory Science Department, College of Applied Medical Science, King Saud University, Riyadh, Saudi Arabia
| | - Qamre Alam
- Medical Genomics Research Department, King Abdullah International Medical Research Center, King Saud Bin Abdulaziz University for Health Science, Riyadh, Saudi Arabia
| | - Manish Manish
- School of Computer and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Rajnish Kumar Singh
- Molecular Biology Unit, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India,*Correspondence: Rajnish Kumar Singh,
| |
Collapse
|
14
|
Juhas M. Artificial Intelligence in Microbiology. BRIEF LESSONS IN MICROBIOLOGY 2023:93-109. [DOI: 10.1007/978-3-031-29544-7_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
15
|
Madsen JJ, Rossman JS. Cholesterol and M2 Rendezvous in Budding and Scission of Influenza A Virus. Subcell Biochem 2023; 106:441-459. [PMID: 38159237 DOI: 10.1007/978-3-031-40086-5_16] [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: 01/03/2024]
Abstract
The cholesterol of the host cell plasma membrane and viral M2 protein plays a crucial role in multiple stages of infection and replication of the influenza A virus. Cholesterol is required for the formation of heterogeneous membrane microdomains (or rafts) in the budozone of the host cell that serves as assembly sites for the viral components. The raft microstructures act as scaffolds for several proteins. Cholesterol may further contribute to the mechanical forces necessary for membrane scission in the last stage of budding and help to maintain the stability of the virus envelope. The M2 protein has been shown to cause membrane scission in model systems by promoting the formation of curved lipid bilayer structures that, in turn, can lead to membrane vesicles budding off or scission intermediates. Membrane remodeling by M2 is intimately linked with cholesterol as it affects local lipid composition, fluidity, and stability of the membrane. Thus, both cholesterol and M2 protein contribute to the efficient and proper release of newly formed influenza viruses from the virus-infected cells.
Collapse
Affiliation(s)
- Jesper J Madsen
- Global and Planetary Health, Center for Global Health and Infectious Diseases Research, College of Public Health, University of South Florida, Tampa, FL, USA.
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
| | - Jeremy S Rossman
- School of Biosciences, University of Kent, Canterbury, Kent, UK
- Research-Aid Networks, Chicago, IL, USA
| |
Collapse
|
16
|
Wang X, Anton H, Vandamme T, Anton N. Updated insight into the characterization of nano-emulsions. Expert Opin Drug Deliv 2023; 20:93-114. [PMID: 36453201 DOI: 10.1080/17425247.2023.2154075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
INTRODUCTION In most of the studies, nano-emulsion characterization is limited to their size distribution and zeta potential. In this review, we present an updated insight of the characterization methods of nano-emulsions, including new or unconventional experimental approaches to explore in depth the nano-emulsion properties. AREA COVERED We propose an overview of all the main techniques used to characterize nano-emulsions, including the most classical ones, up to in vitro, ex vivo and in vivo evaluation. Innovative approaches are then presented in the second part of the review that presents innovative, experimental techniques less known in the field of nano-emulsion such as the nanoparticle tracking analysis, small-angle X-ray scattering, Raman spectroscopy, and nuclear magnetic resonance. Finally, in the last part we discuss the use of lipophilic fluorescent probes and imaging techniques as an emerging tool to understand the nano-emulsion droplet stability, surface decoration, release mechanisms, and in vivo fate. EXPERT OPINION This review is mostly intended for a broad readership and provides key tools regarding the choice of the approach to characterize nano-emulsions. Innovative and uncommon methods will be precious to disclose the information potentially reachable behind a formulation of nano-emulsions, not always known in first intention and with conventional methods.
Collapse
Affiliation(s)
- Xinyue Wang
- Université de Strasbourg, CNRS, CAMB UMR 7199, F-67000 Strasbourg, France
| | - Halina Anton
- Université de Strasbourg, CNRS, Laboratoire de Bioimagerie et Pathologies UMR 7021, F-67000 Strasbourg, France
| | - Thierry Vandamme
- Université de Strasbourg, INSERM, Regenerative nanomedicine UMR 1260, Centre de Recherche en Biomédecine de Strasbourg (CRBS), F-67000 Strasbourg, France
| | - Nicolas Anton
- Université de Strasbourg, INSERM, Regenerative nanomedicine UMR 1260, Centre de Recherche en Biomédecine de Strasbourg (CRBS), F-67000 Strasbourg, France
| |
Collapse
|
17
|
Enespa, Chandra P. Tool and techniques study to plant microbiome current understanding and future needs: an overview. Commun Integr Biol 2022; 15:209-225. [PMID: 35967908 PMCID: PMC9367660 DOI: 10.1080/19420889.2022.2082736] [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] [Indexed: 12/02/2022] Open
Abstract
Microorganisms are present in the universe and they play role in beneficial and harmful to human life, society, and environments. Plant microbiome is a broad term in which microbes are present in the rhizo, phyllo, or endophytic region and play several beneficial and harmful roles with the plant. To know of these microorganisms, it is essential to be able to isolate purification and identify them quickly under laboratory conditions. So, to improve the microbial study, several tools and techniques such as microscopy, rRNA, or rDNA sequencing, fingerprinting, probing, clone libraries, chips, and metagenomics have been developed. The major benefits of these techniques are the identification of microbial community through direct analysis as well as it can apply in situ. Without tools and techniques, we cannot understand the roles of microbiomes. This review explains the tools and their roles in the understanding of microbiomes and their ecological diversity in environments.
Collapse
Affiliation(s)
- Enespa
- Department of Plant Pathology, School of Agriculture, SMPDC, University of Lucknow, Lucknow, India
| | - Prem Chandra
- Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar (A Central) University, Lucknow, India
| |
Collapse
|
18
|
Silva TP, Gamalier JP, Zarantonello V, Soares CR, Resende NS, Barros NO, Melo RCN. Enhanced ability of freshwater bacteria to secrete extracellular vesicles upon interaction with virus. Environ Microbiol 2022; 24:5882-5897. [PMID: 36054062 DOI: 10.1111/1462-2920.16166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 08/08/2022] [Indexed: 01/12/2023]
Abstract
The ability of freshwater bacteria to secrete extracellular vesicles (EVs) upon interaction with viruses remains to be established. Here, we investigated for the first time if freshwater virus-infected bacteria release EVs in both natural ecosystems and virus-like particles (VLPs)-enriched cultures. We performed a systematic study using transmission electron microscopy to visualize viruses and EVs at high resolution and single-cell imaging analyses to quantitate nascent EVs at the surface of gram-negative bacteria. First, by analysing freshwater samples from a tropical ecosystem (Negro River/Amazon Basin/Brazil), we captured bacteriophages-infected bacteria releasing EVs from their outer membrane. Next, VLPs isolated from these samples and inoculated in bacterial cultures not only impacted bacteria growth and viability but also led them to a significant release of EVs (~300% increase in numbers/cell section) compared to controls. The numbers of both budding and free EVs and EVs per linear micrometre of cell envelope were significantly higher in infected bacteria. Our findings identify a yet-not recognized capability of freshwater bacteria in generating EVs (overvesiculation) in response to viral infection. Since viruses are abundant members of aquatic ecosystems and bacteria are natural hosts for them, such interaction is an interesting event for microbial communities to be explored in freshwater ecosystems.
Collapse
Affiliation(s)
- Thiago P Silva
- Laboratory of Cellular Biology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora
| | - Juliana P Gamalier
- Laboratory of Cellular Biology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora
| | - Victor Zarantonello
- Laboratory of Cellular Biology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora
| | - Caique R Soares
- Laboratory of Cellular Biology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora
| | - Nathália S Resende
- Laboratory of Aquatic Ecology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Nathan O Barros
- Laboratory of Aquatic Ecology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Rossana C N Melo
- Laboratory of Cellular Biology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora
| |
Collapse
|
19
|
Concentration of SARS-CoV-2-Infected Cell Culture Supernatants for Detection of Virus-like Particles by Scanning Electron Microscopy. Viruses 2022; 14:v14112388. [PMID: 36366486 PMCID: PMC9698492 DOI: 10.3390/v14112388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/21/2022] [Accepted: 10/27/2022] [Indexed: 02/06/2023] Open
Abstract
There is currently a need for new rapid viral diagnostic electron microscopy methods. Although the gold standard remains the transmission electron microscopy (TEM) negative staining method for electron microscopic examination of samples containing a virus, difficulties can arise when the virus particle content of the sample that has to be examined is poor. Such samples include supernatants of virus-infected cells that can be difficult to examine, as sometimes only a few virus particles are released in the culture medium upon infection. In addition to TEM, scanning electron microscopy (SEM) can also be used for visualizing virus particles. One advantage of SEM over TEM is its ability to rapidly screen several large specimens, such as microscopy slides. In this study, we investigated this possibility and tested different coating molecules as well as the effect of centrifugation for analyzing SARS-CoV-2-virus-infected cell culture supernatants deposited on microscopy glass slides by SEM. We found that centrifugation of 25XConcanavalinA-coated microscopy glass slides in shell vials provided an improved method for concentrating SARS-CoV-2-virus-infected cell supernatants for virus-like particle detection by SEM.
Collapse
|
20
|
Calderaro A, Buttrini M, Farina B, Montecchini S, De Conto F, Chezzi C. Respiratory Tract Infections and Laboratory Diagnostic Methods: A Review with A Focus on Syndromic Panel-Based Assays. Microorganisms 2022; 10:microorganisms10091856. [PMID: 36144458 PMCID: PMC9504108 DOI: 10.3390/microorganisms10091856] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/20/2022] [Accepted: 09/11/2022] [Indexed: 11/16/2022] Open
Abstract
Respiratory tract infections (RTIs) are the focus of developments in public health, given their widespread distribution and the high morbidity and mortality rates reported worldwide. The clinical spectrum ranges from asymptomatic or mild infection to severe or fatal disease. Rapidity is required in diagnostics to provide adequate and prompt management of patients. The current algorithm for the laboratory diagnosis of RTIs relies on multiple approaches including gold-standard conventional methods, among which the traditional culture is the most used, and innovative ones such as molecular methods, mostly used to detect viruses and atypical bacteria. The implementation of molecular methods with syndromic panels has the potential to be a powerful decision-making tool for patient management despite requiring appropriate use of the test in different patient populations. Their use radically reduces time-to-results and increases the detection of clinically relevant pathogens compared to conventional methods. Moreover, if implemented wisely and interpreted cautiously, syndromic panels can improve antimicrobial use and patient outcomes, and optimize laboratory workflow. In this review, a narrative overview of the main etiological, clinical, and epidemiological features of RTI is reported, focusing on the laboratory diagnosis and the potentialities of syndromic panels.
Collapse
|
21
|
Santiago-Rodriguez TM, Hollister EB. Unraveling the viral dark matter through viral metagenomics. Front Immunol 2022; 13:1005107. [PMID: 36189246 PMCID: PMC9523745 DOI: 10.3389/fimmu.2022.1005107] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/31/2022] [Indexed: 11/13/2022] Open
Abstract
Viruses are part of the microbiome and have essential roles in immunology, evolution, biogeochemical cycles, health, and disease progression. Viruses influence a wide variety of systems and processes, and the continued discovery of novel viruses is anticipated to reveal new mechanisms influencing the biology of diverse environments. While the identity and roles of viruses continue to be discovered and understood through viral metagenomics, most of the sequences in virome datasets cannot be attributed to known viruses or may be only distantly related to species already described in public sequence databases, at best. Such viruses are known as the viral dark matter. Ongoing discoveries from the viral dark matter have provided insights into novel viruses from a variety of environments, as well as their potential in immunological processes, virus evolution, health, disease, therapeutics, and surveillance. Increased understanding of the viral dark matter will continue with a combination of cultivation, microscopy, sequencing, and bioinformatic efforts, which are discussed in the present review.
Collapse
|
22
|
Assessing and improving the validity of COVID-19 autopsy studies - A multicentre approach to establish essential standards for immunohistochemical and ultrastructural analyses. EBioMedicine 2022; 83:104193. [PMID: 35930888 PMCID: PMC9344879 DOI: 10.1016/j.ebiom.2022.104193] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 12/26/2022] Open
Abstract
Background Autopsy studies have provided valuable insights into the pathophysiology of COVID-19. Controversies remain about whether the clinical presentation is due to direct organ damage by SARS-CoV-2 or secondary effects, such as overshooting immune response. SARS-CoV-2 detection in tissues by RT-qPCR and immunohistochemistry (IHC) or electron microscopy (EM) can help answer these questions, but a comprehensive evaluation of these applications is missing. Methods We assessed publications using IHC and EM for SARS-CoV-2 detection in autopsy tissues. We systematically evaluated commercially available antibodies against the SARS-CoV-2 proteins in cultured cell lines and COVID-19 autopsy tissues. In a multicentre study, we evaluated specificity, reproducibility, and inter-observer variability of SARS-CoV-2 IHC. We correlated RT-qPCR viral tissue loads with semiquantitative IHC scoring. We used qualitative and quantitative EM analyses to refine criteria for ultrastructural identification of SARS-CoV-2. Findings Publications show high variability in detection and interpretation of SARS-CoV-2 abundance in autopsy tissues by IHC or EM. We show that IHC using antibodies against SARS-CoV-2 nucleocapsid yields the highest sensitivity and specificity. We found a positive correlation between presence of viral proteins by IHC and RT-qPCR-determined SARS-CoV-2 viral RNA load (N= 35; r=-0.83, p-value <0.0001). For EM, we refined criteria for virus identification and provide recommendations for optimized sampling and analysis. 135 of 144 publications misinterpret cellular structures as virus using EM or show only insufficient data. We provide publicly accessible digitized EM sections as a reference and for training purposes. Interpretation Since detection of SARS-CoV-2 in human autopsy tissues by IHC and EM is difficult and frequently incorrect, we propose criteria for a re-evaluation of available data and guidance for further investigations of direct organ effects by SARS-CoV-2. Funding German Federal Ministry of Health, German Federal Ministry of Education and Research, Berlin University Alliance, German Research Foundation, German Center for Infectious Research.
Collapse
|
23
|
Zhao F, Kim JC. Thermo-sensitive self-assembly of poly(ethylene imine)/(phenylthio) acetic acid ion pair in surfactant solutions. Drug Deliv 2022; 29:2245-2257. [PMID: 35815674 PMCID: PMC9272940 DOI: 10.1080/10717544.2022.2027571] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Poly(ethylene imine)/(phenylthio) acetic acid (PEI/PTA) ion pairs exhibited an upper critical solution temperature (UCST) behavior in an aqueous solution and the UCST was higher as the PTA content was more. The UCST of the ion pair decreased with increasing Brij S100 (BS 100, a nonionic surfactant) concentration but increased with increasing cetylpridinium chloride (CPC, a cationic surfactant) and sodium lauroylsarcosinate (SLS, an anionic surfactant) concentration. TEM microscopy demonstrated BS 100 markedly reduced the size of PEI/PTA ion pair self-assembly (IPSAM) whereas CPC and SLS had little effect on the size and the integrity of IPSAM. 1H NMR spectroscopy showed the hydrophobic interaction among the phenyl groups of PEI/PTA ion pairs took place. It also demonstrated the hydrophobic interaction between BS 100 and PTA and the electrostatic interaction between CPC and PTA and between SLS and PEI occurred. X-ray photoelectron spectroscopy disclosed the PTA of PEI/PTA IPSAM could be readily oxidized by H2O2 even at a low concentration (e.g. 0.005%). IPSAM released its payload (i.e. nile red) in a temperature and oxidation-responsive manner. The surfactants (i.e. BS 100, CPC, and SLS) suppressed the thermally triggered release in a different way. The effectiveness of the surfactant to suppress the release was in the order of BS 100 > CPC > SLS. IPSAM released its content more extensively as H2O2 (an oxidizing agent) concentration was higher. The ionic surfactants (i.e. CPS and SLS) had little effect on the oxidation-induced release degree but the nonionic surfactant (BS 100) markedly suppressed the release degree.
Collapse
Affiliation(s)
- Fanyu Zhao
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jin-Chul Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
| |
Collapse
|
24
|
Sun YX, Li ZR, Zhang PJ, Han JH, Di HY, Qin JY, Cong YL. A Single Vaccination of Chimeric Bivalent Virus-Like Particle Vaccine Confers Protection Against H9N2 and H3N2 Avian Influenza in Commercial Broilers and Allows a Strategy of Differentiating Infected from Vaccinated Animals. Front Immunol 2022; 13:902515. [PMID: 35874682 PMCID: PMC9304867 DOI: 10.3389/fimmu.2022.902515] [Citation(s) in RCA: 2] [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: 03/23/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022] Open
Abstract
H9N2 and H3N2 are the two most important subtypes of low pathogenic avian influenza viruses (LPAIV) because of their ongoing threat to the global poultry industry and public health. Although commercially available inactivated H9N2 vaccines are widely used in the affected countries, endemic H9N2 avian influenza remains uncontrolled. In addition, there is no available avian H3N2 vaccine. Influenza virus-like particles (VLPs) are one of the most promising vaccine alternatives to traditional egg-based vaccines. In this study, to increase the immunogenic content of VLPs to reduce production costs, we developed chimeric bivalent VLPs (cbVLPs) co-displaying hemagglutinin (HA) and neuraminidase (NA) of H9N2 and H3N2 viruses with the Gag protein of bovine immunodeficiency virus (BIV) as the inner core using the Bac-to-Bac baculovirus expression system. The results showed that a single immunization of chickens with 40μg/0.3mL cbVLPs elicited an effective immune response and provided complete protection against H9N2 and H3N2 viruses. More importantly, cbVLPs with accompanying serological assays can successfully accomplish the strategy of differentiating infected animals from vaccinated animals (DIVA), making virus surveillance easier. Therefore, this cbVLP vaccine candidate would be a promising alternative to conventional vaccines, showing great potential for commercial development.
Collapse
Affiliation(s)
- Yi-xue Sun
- Laboratory of Infectious Diseases, College of Veterinary Medicine; Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
- Jilin Research and Development Center of Biomedical Engineering, Changchun University, Changchun, China
| | - Zheng-rong Li
- Laboratory of Infectious Diseases, College of Veterinary Medicine; Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
| | - Peng-ju Zhang
- Institute of Animal Biotechnology, Jilin Academy of Agricultural Sciences, Changchun, China
- *Correspondence: Yan-long Cong, ; orcid.org/0000-0001-9497-4882
| | - Jin-hong Han
- Laboratory of Infectious Diseases, College of Veterinary Medicine; Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
| | - Hai-yang Di
- Department of Disease Prevention and Control, Zoological and Botanical Garden of Changchun, Changchun, China
| | - Jia-yi Qin
- Laboratory of Infectious Diseases, College of Veterinary Medicine; Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
| | - Yan-long Cong
- Laboratory of Infectious Diseases, College of Veterinary Medicine; Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun, China
- *Correspondence: Yan-long Cong, ; orcid.org/0000-0001-9497-4882
| |
Collapse
|
25
|
Mostafa-Hedeab G, Allayeh AK, Elhady HA, Eledrdery AY, Mraheil MA, Mostafa A. Viral Eco-Genomic Tools: Development and Implementation for Aquatic Biomonitoring. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19137707. [PMID: 35805367 PMCID: PMC9265447 DOI: 10.3390/ijerph19137707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 12/17/2022]
Abstract
Enteric viruses (EVs) occurrence within aquatic environments varies and leads to significant risk on public health of humans, animals, and diversity of aquatic taxa. Early and efficacious recognition of cultivable and fastidious EVs in aquatic systems are important to ensure the sanitary level of aquatic water and implement required treatment strategies. Herein, we provided a comprehensive overview of the conventional and up-to-date eco-genomic tools for aquatic biomonitoring of EVs, aiming to develop better water pollution monitoring tools. In combination with bioinformatics techniques, genetic tools including cloning sequencing analysis, DNA microarray, next-generation sequencing (NGS), and metagenomic sequencing technologies are implemented to make informed decisions about the global burden of waterborne EVs-associated diseases. The data presented in this review are helpful to recommend that: (1) Each viral pollution detection method has its own merits and demerits; therefore, it would be advantageous for viral pollution evaluation to be integrated as a complementary platform. (2) The total viral genome pool extracted from aquatic environmental samples is a real reflection of pollution status of the aquatic eco-systems; therefore, it is recommended to conduct regular sampling through the year to establish an updated monitoring system for EVs, and quantify viral peak concentrations, viral typing, and genotyping. (3) Despite that conventional detection methods are cheaper, it is highly recommended to implement molecular-based technologies to complement aquatic ecosystems biomonitoring due to numerous advantages including high-throughput capability. (4) Continuous implementation of the eco-genetic detection tools for monitoring the EVs in aquatic ecosystems is recommended.
Collapse
Affiliation(s)
- Gomaa Mostafa-Hedeab
- Pharmacology Department and Health Research Unit, Medical College, Jouf University, Skaka 11564, Saudi Arabia
- Correspondence: (G.M.-H.); (M.A.M.); (A.M.)
| | - Abdou Kamal Allayeh
- Water Pollution Department, Virology Laboratory, National Research Centre, Dokki, Giza 12622, Egypt;
| | | | - Abozer Y. Eledrdery
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 11564, Saudi Arabia;
| | - Mobarak Abu Mraheil
- German Center for Infection Research (DZIF), Institute of Medical Microbiology, Justus-Liebig University, 35392 Giessen, Germany
- Correspondence: (G.M.-H.); (M.A.M.); (A.M.)
| | - Ahmed Mostafa
- Center of Scientific Excellence for Influenza Viruses, National Research Centre, Giza 12622, Egypt
- Correspondence: (G.M.-H.); (M.A.M.); (A.M.)
| |
Collapse
|
26
|
Calcuttawala F, Shaw R, Sarbajna A, Dutta M, Sinha S, K. Das Gupta S. Apoptosis like symptoms associated with abortive infection of Mycobacterium smegmatis by mycobacteriophage D29. PLoS One 2022; 17:e0259480. [PMID: 35580120 PMCID: PMC9113562 DOI: 10.1371/journal.pone.0259480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 04/29/2022] [Indexed: 01/12/2023] Open
Abstract
Mycobacteriophages are phages that infect mycobacteria resulting in their killing. Although lysis is the primary mechanism by which mycobacteriophages cause cell death, others such as abortive infection may also be involved. We took recourse to perform immunofluorescence and electron microscopic studies using mycobacteriophage D29 infected Mycobacterium smegmatis cells to investigate this issue. We could observe the intricate details of the infection process using these techniques such as adsorption, the phage tail penetrating the thick mycolic acid layer, formation of membrane pores, membrane blebbing, and phage release. We observed a significant increase in DNA fragmentation and membrane depolarization using cell-biological techniques symptomatic of programmed cell death (PCD). As Toxin-Antitoxin (TA) systems mediate bacterial PCD, we measured their expression profiles with and without phage infection. Of the three TAs examined, MazEF, VapBC, and phd/doc, we found that in the case of VapBC, a significant decrease in the antitoxin (VapB): toxin (VapC) ratio was observed following phage infection, implying that high VapC may have a role to play in the induction of mycobacterial apoptotic cell death following phage infection. This study indicates that D29 infection causes mycobacteria to undergo morphological and molecular changes that are hallmarks of apoptotic cell death.
Collapse
Affiliation(s)
- Fatema Calcuttawala
- Department of Microbiology, Sister Nivedita University, Kolkata, India
- * E-mail:
| | - Rahul Shaw
- Department of Microbiology, Bose Institute, Kolkata, India
| | - Arpita Sarbajna
- Division of Electron Microscopy, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Moumita Dutta
- Division of Electron Microscopy, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | | | | |
Collapse
|
27
|
Durable Vitality and Magical Forms. Emerg Infect Dis 2022. [PMCID: PMC9045442 DOI: 10.3201/eid2805.ac2805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
28
|
A panoptic review of techniques for finfish disease diagnosis: The status quo and future perspectives. J Microbiol Methods 2022; 196:106477. [DOI: 10.1016/j.mimet.2022.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 12/27/2022]
|
29
|
Dittmayer C, Laue M. Identification of coronavirus particles by electron microscopy requires demonstration of specific ultrastructural features. Eur Respir J 2022; 60:2200266. [PMID: 35487536 PMCID: PMC9449483 DOI: 10.1183/13993003.00266-2022] [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: 02/04/2022] [Accepted: 03/20/2022] [Indexed: 12/04/2022]
Abstract
With interest we read the publication of Evangelou et al . [1], which studied SARS-CoV-2 induced senescence in severe COVID-19. Immunohistochemistry (IHC) and electron microscopy (EM) were used for in situ detection of SARS-CoV-2 in autopsy tissues. The authors used formalin-fixed and paraffin-embedded (FFPE) autopsy lung of COVID-19 and non-COVID-19 patients to perform re-embedding for EM and ultrastructural analysis. They report detection of SARS-CoV-2 virions within alveolar type 2 cells of representative COVID-19 cases (figure 1c in Evangelou et al. [1]). Three electron micrographs show putative virus particles, indicated by arrows, to document their findings. Unequivocal detection of ultrastructural features specific to organelles or viruses is required to infer their presence by electron microscopy. This article also provides reference images for the correct identification of coronavirus. https://bit.ly/3IFYDjc
Collapse
Affiliation(s)
- Carsten Dittmayer
- Department of Neuropathology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Michael Laue
- National Consultant Laboratory for Electron Microscopy of Infectious Pathogens, Centre for Biological Threats and Special Pathogens 4 (ZBS 4), Robert Koch Institute, Berlin, Germany
| |
Collapse
|
30
|
Use of Raman Spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy in a Multi-Technique Approach for Physical Characterization of Purple Urine Bag Syndrome. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12084034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Purple urine bag syndrome (PUBS) is a rare condition characterized by purple discoloration of urine and urine bags. Although it is benign, it represents an alarming symptom to the patients and their relatives because of purple discoloration. We have physically characterized urine and urine bags belonging to a patient suffering from PUBS using an approach that combines Raman spectroscopy (RS) and scanning electron microscopy (SEM) coupled with energy dispersive X-ray (EDX). Five “blue” discolored bags and one sterile urine bag, representing the control, were cut into 1 cm2 square samples and analyzed by using RS and SEM + EDX technique. RS enabled us to identify the presence of indigo, a metabolite of tryptophan, while SEM analysis showed the biofilm deposit, probably due to the presence of microorganisms, and the EDX measurements exhibited the elemental composition of the bags. In particular, urine bags before and after the presence of PUBS urine showed an increase of ~32% of Cl, ~33% of O, ~667% of Ca, ~65% of Al and Mg, while C decreased by about 41%. Our results, to be taken as a proof-of-principle study, are promising for the aim to characterizing the urine bags in a flexible, inexpensive, and comprehensive manner.
Collapse
|
31
|
Amara U, Rashid S, Mahmood K, Nawaz MH, Hayat A, Hassan M. Insight into prognostics, diagnostics, and management strategies for SARS CoV-2. RSC Adv 2022; 12:8059-8094. [PMID: 35424750 PMCID: PMC8982343 DOI: 10.1039/d1ra07988c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 02/04/2022] [Indexed: 01/08/2023] Open
Abstract
The foremost challenge in countering infectious diseases is the shortage of effective therapeutics. The emergence of coronavirus disease (COVID-19) outbreak has posed a great menace to the public health system globally, prompting unprecedented endeavors to contain the virus. Many countries have organized research programs for therapeutics and management development. However, the longstanding process has forced authorities to implement widespread infrastructures for detailed prognostic and diagnostics study of severe acute respiratory syndrome (SARS CoV-2). This review discussed nearly all the globally developed diagnostic methodologies reported for SARS CoV-2 detection. We have highlighted in detail the approaches for evaluating COVID-19 biomarkers along with the most employed nucleic acid- and protein-based detection methodologies and the causes of their severe downfall and rejection. As the variable variants of SARS CoV-2 came into the picture, we captured the breadth of newly integrated digital sensing prototypes comprised of plasmonic and field-effect transistor-based sensors along with commercially available food and drug administration (FDA) approved detection kits. However, more efforts are required to exploit the available resources to manufacture cheap and robust diagnostic methodologies. Likewise, the visualization and characterization tools along with the current challenges associated with waste-water surveillance, food security, contact tracing, and their role during this intense period of the pandemic have also been discussed. We expect that the integrated data will be supportive and aid in the evaluation of sensing technologies not only in current but also future pandemics.
Collapse
Affiliation(s)
- Umay Amara
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 608000 Pakistan
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus 54000 Pakistan
| | - Sidra Rashid
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus 54000 Pakistan
| | - Khalid Mahmood
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 608000 Pakistan
| | - Mian Hasnain Nawaz
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus 54000 Pakistan
| | - Akhtar Hayat
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus 54000 Pakistan
| | - Maria Hassan
- Institute of Chemical Sciences, Bahauddin Zakariya University Multan 608000 Pakistan
| |
Collapse
|
32
|
Polysaccharides and Тheir Derivatives as Potential Antiviral Molecules. Viruses 2022; 14:v14020426. [PMID: 35216019 PMCID: PMC8879384 DOI: 10.3390/v14020426] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/08/2022] [Accepted: 02/16/2022] [Indexed: 01/27/2023] Open
Abstract
In the current context of the COVID-19 pandemic, it appears that our scientific resources and the medical community are not sufficiently developed to combat rapid viral spread all over the world. A number of viruses causing epidemics have already disseminated across the world in the last few years, such as the dengue or chinkungunya virus, the Ebola virus, and other coronavirus families such as Middle East respiratory syndrome (MERS-CoV) and severe acute respiratory syndrome (SARS-CoV). The outbreaks of these infectious diseases have demonstrated the difficulty of treating an epidemic before the creation of vaccine. Different antiviral drugs already exist. However, several of them cause side effects or have lost their efficiency because of virus mutations. It is essential to develop new antiviral strategies, but ones that rely on more natural compounds to decrease the secondary effects. Polysaccharides, which have come to be known in recent years for their medicinal properties, including antiviral activities, are an excellent alternative. They are essential for the metabolism of plants, microorganisms, and animals, and are directly extractible. Polysaccharides have attracted more and more attention due to their therapeutic properties, low toxicity, and availability, and seem to be attractive candidates as antiviral drugs of tomorrow.
Collapse
|
33
|
Mansy SS, AbouSamra MM. Electron microscopy overview of SARS-COV2 and its clinical impact. Ultrastruct Pathol 2022; 46:1-17. [PMID: 35139747 DOI: 10.1080/01913123.2022.2035475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Research centers around the world are competing to develop therapeutic and prophylactic agents to provide new intervention strategies that could halt or even help slow the progression of the COVID19 pandemic. This requires a deep understanding of the biology and cytopathology of the interaction of SARS-CoV-2 with the cell. This review highlights the importance of electron microscopy (EM) in better understanding the morphology, the subcellular morphogenesis, and pathogenesis of SARS-CoV-2, given its nanometric dimensions. The study also underscores the value of cryo-electron microscopy for analyzing the structure of viral protein complex at atomic resolution in its native state and the development of novel antibodies, vaccines, and therapies targeting the trimeric S spike proteins and the viral replication organelles. This review highlighted the emergence in a short period of time of several viral variants of concern with enhanced transmissibility and increased infectivity. This is due to the elevated affinity of the host receptor with acquired adaptive mutations in the spike protein gene of the virus.Subsequently, to the technical improvement of EM resolutions and the recent promising results with SARS-CoV2 variant structure determination, antibodies production, and vaccine development, it is necessary to maximize our investigations regarding the potential occurrence of immune pressure and viral adaptation secondary to repeated infection and vaccination.
Collapse
Affiliation(s)
- Soheir Saiid Mansy
- Electron Microscopy Research Department, Theodor Bilharz Research Institute, Egypt
| | - Mona Mahmoud AbouSamra
- Pharmaceutical Technology Department, Pharmaceutical and Drug Industries Institute, National Research Centre, Cairo, Egypt
| |
Collapse
|
34
|
Ramsubeik S, Jerry C, Crossley B, Armién AG, Rejmanek D, Pitesky M, Shivaprasad H, Stoute S. Analysis of Diagnostic Cases of Turkey Viral Enteritis in Commercial Turkey Poults in California. J APPL POULTRY RES 2022. [DOI: 10.1016/j.japr.2022.100238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
35
|
Aptamers-Diagnostic and Therapeutic Solution in SARS-CoV-2. Int J Mol Sci 2022; 23:ijms23031412. [PMID: 35163338 PMCID: PMC8836149 DOI: 10.3390/ijms23031412] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 02/01/2023] Open
Abstract
The SARS-CoV-2 virus is currently the most serious challenge to global public health. Its emergence has severely disrupted the functioning of health services and the economic and social situation worldwide. Therefore, new diagnostic and therapeutic tools are urgently needed to allow for the early detection of the SARS-CoV-2 virus and appropriate treatment, which is crucial for the effective control of the COVID-19 disease. The ideal solution seems to be the use of aptamers—short fragments of nucleic acids, DNA or RNA—that can bind selected proteins with high specificity and affinity. They can be used in methods that base the reading of the test result on fluorescence phenomena, chemiluminescence, and electrochemical changes. Exploiting the properties of aptamers will enable the introduction of rapid, sensitive, specific, and low-cost tests for the routine diagnosis of SARS-CoV-2. Aptamers are excellent candidates for the development of point-of-care diagnostic devices and are potential therapeutic tools for the treatment of COVID-19. They can effectively block coronavirus activity in multiple fields by binding viral proteins and acting as carriers of therapeutic substances. In this review, we present recent developments in the design of various types of aptasensors to detect and treat the SARS-CoV-2 infection.
Collapse
|
36
|
Herpetic Pneumonia in Indian Ringneck Parrots (Psittacula krameri): First Report of Novel Psittacid Alphaherpesvirus-5 Infection in Europe. Animals (Basel) 2022; 12:ani12020188. [PMID: 35049810 PMCID: PMC8773069 DOI: 10.3390/ani12020188] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/01/2022] [Accepted: 01/11/2022] [Indexed: 11/17/2022] Open
Abstract
The first two European outbreaks of herpetic pneumonia caused by Psittacid alphaherpesvirus-5 were diagnosed based on gross pathology findings, histological examination, transmission electron microscopy visualization and genome sequencing. The outbreaks, characterized by high morbidity and high mortality rates, involved two parrot species, namely the Indian ringneck parrot (Psittacula krameri) and the Alexandrine parakeet (Psittacula eupatria). Clinical signs observed were ruffled feathers, dyspnea, tail bobbing, open wings while breathing, depression and anorexia. Necropsy was performed on Indian ringneck parrots only, and the most evident and serious gross lesion found in all the birds was a diffuse marked consolidation of the lungs associated with parenchyma congestion and oedema. Histological examination confirmed the existence of bronchopneumonia characterized by the presence of syncytial cells with intranuclear inclusion bodies. In one bird, fibrinous airsacculitis was observed as well. Lung tissue inspection through electron microscopy revealed the presence of virus particles resembling herpesviruses. Viral DNA was extracted, amplified using primers for Alloherpesviridae DNA polymerase gene detection, and then sequenced. BLAST analysis showed a 100% identity with the only previously reported sequence of PsHV-5 (MK955929.1).
Collapse
|
37
|
Abstract
Cost-effective, rapid, and accurate virus detection technologies play key roles in reducing viral transmission. Prompt and accurate virus detection enables timely treatment and effective quarantine of virus carrier, and therefore effectively reduces the possibility of large-scale spread. However, conventional virus detection techniques often suffer from slow response, high cost or sophisticated procedures. Recently, two-dimensional (2D) materials have been used as promising sensing platforms for the high-performance detection of a variety of chemical and biological substances. The unique properties of 2D materials, such as large specific area, active surface interaction with biomolecules and facile surface functionalization, provide advantages in developing novel virus detection technologies with fast response and high sensitivity. Furthermore, 2D materials possess versatile and tunable electronic, electrochemical and optical properties, making them ideal platforms to demonstrate conceptual sensing techniques and explore complex sensing mechanisms in next-generation biosensors. In this review, we first briefly summarize the virus detection techniques with an emphasis on the current efforts in fighting again COVID-19. Then, we introduce the preparation methods and properties of 2D materials utilized in biosensors, including graphene, transition metal dichalcogenides (TMDs) and other 2D materials. Furthermore, we discuss the working principles of various virus detection technologies based on emerging 2D materials, such as field-effect transistor-based virus detection, electrochemical virus detection, optical virus detection and other virus detection techniques. Then, we elaborate on the essential works in 2D material-based high-performance virus detection. Finally, our perspective on the challenges and future research direction in this field is discussed.
![]()
Collapse
|
38
|
Singh S. Microscopes in conservative dentistry and endodontics research. J Conserv Dent 2022; 25:333-337. [PMID: 36187867 PMCID: PMC9520651 DOI: 10.4103/jcd.jcd_402_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 07/12/2022] [Indexed: 11/06/2022] Open
|
39
|
Fertig TE, Chitoiu L, Terinte‐Balcan G, Peteu V, Marta D, Gherghiceanu M. The atomic portrait of SARS-CoV-2 as captured by cryo-electron microscopy. J Cell Mol Med 2022; 26:25-34. [PMID: 34904376 PMCID: PMC8742239 DOI: 10.1111/jcmm.17103] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/15/2021] [Accepted: 11/19/2021] [Indexed: 01/18/2023] Open
Abstract
Transmission electron microscopy has historically been indispensable for virology research, as it offers unique insight into virus function. In the past decade, as cryo-electron microscopy (cryo-EM) has matured and become more accessible, we have been able to peer into the structure of viruses at the atomic level and understand how they interact with the host cell, with drugs or with antibodies. Perhaps, there was no time in recent history where cryo-EM was more needed, as SARS-CoV-2 has spread around the globe, causing millions of deaths and almost unquantifiable economic devastation. In this concise review, we aim to mark the most important contributions of cryo-EM to understanding the structure and function of SARS-CoV-2 proteins, from surface spikes to the virus core and from virus-receptor interactions to antibody binding.
Collapse
MESH Headings
- Angiotensin-Converting Enzyme 2/chemistry
- Angiotensin-Converting Enzyme 2/immunology
- Angiotensin-Converting Enzyme 2/metabolism
- Antibodies, Viral/biosynthesis
- Antibodies, Viral/chemistry
- COVID-19/immunology
- COVID-19/prevention & control
- COVID-19/virology
- COVID-19 Vaccines/administration & dosage
- COVID-19 Vaccines/biosynthesis
- COVID-19 Vaccines/chemistry
- Cryoelectron Microscopy
- Epitopes/chemistry
- Epitopes/immunology
- Epitopes/metabolism
- Humans
- Models, Molecular
- Protein Binding
- Protein Interaction Domains and Motifs
- Protein Structure, Secondary
- Receptors, Virus/chemistry
- Receptors, Virus/immunology
- Receptors, Virus/metabolism
- SARS-CoV-2/drug effects
- SARS-CoV-2/pathogenicity
- SARS-CoV-2/ultrastructure
- Serine Endopeptidases/chemistry
- Serine Endopeptidases/immunology
- Serine Endopeptidases/metabolism
- Spike Glycoprotein, Coronavirus/chemistry
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/metabolism
- Virion/drug effects
- Virion/pathogenicity
- Virion/ultrastructure
Collapse
Affiliation(s)
- Tudor Emanuel Fertig
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
- Carol Davila University of Medicine and PharmacyBucharestRomania
| | - Leona Chitoiu
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
| | - George Terinte‐Balcan
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
| | - Victor‐Eduard Peteu
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
| | - Daciana Marta
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
| | - Mihaela Gherghiceanu
- Ultrastructural Pathology and Bioimaging LabVictor Babeș National Institute of PathologyBucharestRomania
- Carol Davila University of Medicine and PharmacyBucharestRomania
| |
Collapse
|
40
|
Grover A, Sinha R, Jyoti D, Faggio C. Imperative role of electron microscopy in toxicity assessment: A review. Microsc Res Tech 2021; 85:1976-1989. [PMID: 34904321 DOI: 10.1002/jemt.24029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 02/06/2023]
Abstract
Electron microscope (EM) was developed in 1931 and since then microscopical examination of both the biological and non-biological samples has been revolutionized. Modifications in electron microscopy techniques, such as scanning EM and transmission EM, have widened their applicability in the various sectors such as understanding of drug toxicity, development of mechanism, criminal site investigation, and characterization of the nano-molecule. The present review summarizes its role in important aspects such as toxicity assessment and disease diagnosis in special reference to SARS-COV2. In the biological system, EM studies have elucidated the impact of toxicants at the ultra-structural level in various tissue in conformity to physiological alterations. Thus, EM can be concluded as an important tool in toxicity assessment and disease prognosis.
Collapse
Affiliation(s)
- Aseem Grover
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Bajhol, India
| | - Reshma Sinha
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Bajhol, India
| | - Divya Jyoti
- School of Biological and Environmental Sciences, Shoolini University of Biotechnology and Management Sciences, Bajhol, India
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| |
Collapse
|
41
|
McClelland RD, Culp TN, Marchant DJ. Imaging Flow Cytometry and Confocal Immunofluorescence Microscopy of Virus-Host Cell Interactions. Front Cell Infect Microbiol 2021; 11:749039. [PMID: 34712624 PMCID: PMC8546218 DOI: 10.3389/fcimb.2021.749039] [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: 07/28/2021] [Accepted: 09/27/2021] [Indexed: 11/25/2022] Open
Abstract
Viruses are diverse pathogens that use host factors to enter cells and cause disease. Imaging the entry and replication phases of viruses and their interactions with host factors is key to fully understanding viral infections. This review will discuss how confocal microscopy and imaging flow cytometry are used to investigate virus entry and replication mechanisms in fixed and live cells. Quantification of viral images and the use of cryo-electron microscopy to gather structural information of viruses is also explored. Using imaging to understand how viruses replicate and interact with host factors, we gain insight into cellular processes and identify novel targets to develop antiviral therapeutics and vaccines.
Collapse
Affiliation(s)
- Ryley D McClelland
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, Katz Center for Health Research, University of Alberta, Edmonton, AB, Canada
| | - Tyce N Culp
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, Katz Center for Health Research, University of Alberta, Edmonton, AB, Canada
| | - David J Marchant
- Department of Medical Microbiology and Immunology, Li Ka Shing Institute of Virology, Katz Center for Health Research, University of Alberta, Edmonton, AB, Canada
| |
Collapse
|
42
|
Parrish K, Kirkland PD, Skerratt LF, Ariel E. Nidoviruses in Reptiles: A Review. Front Vet Sci 2021; 8:733404. [PMID: 34621811 PMCID: PMC8490724 DOI: 10.3389/fvets.2021.733404] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/19/2021] [Indexed: 12/17/2022] Open
Abstract
Since their discovery in 2014, reptile nidoviruses (also known as serpentoviruses) have emerged as significant pathogens worldwide. They are known for causing severe and often fatal respiratory disease in various captive snake species, especially pythons. Related viruses have been detected in other reptiles with and without respiratory disease, including captive and wild populations of lizards, and wild populations of freshwater turtles. There are many opportunities to better understand the viral diversity, species susceptibility, and clinical presentation in different species in this relatively new field of research. In captive snake collections, reptile nidoviruses can spread quickly and be associated with high morbidity and mortality, yet the potential disease risk to wild reptile populations remains largely unknown, despite reptile species declining on a global scale. Experimental studies or investigations of disease outbreaks in wild reptile populations are scarce, leaving the available literature limited mostly to exploring findings of naturally infected animals in captivity. Further studies into the pathogenesis of different reptile nidoviruses in a variety of reptile species is required to explore the complexity of disease and routes of transmission. This review focuses on the biology of these viruses, hosts and geographic distribution, clinical signs and pathology, laboratory diagnosis and management of reptile nidovirus infections to better understand nidovirus infections in reptiles.
Collapse
Affiliation(s)
- Kate Parrish
- Virology Laboratory, Elizabeth Macarthur Agricultural Institute, New South Wales (NSW) Department of Primary Industries, Menangle, NSW, Australia.,College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, Australia
| | - Peter D Kirkland
- Virology Laboratory, Elizabeth Macarthur Agricultural Institute, New South Wales (NSW) Department of Primary Industries, Menangle, NSW, Australia.,College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, Australia
| | - Lee F Skerratt
- Faculty of Veterinary and Agricultural Sciences, Melbourne Veterinary School, University of Melbourne, Melbourne, VIC, Australia
| | - Ellen Ariel
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, Australia
| |
Collapse
|
43
|
Horvitz D, Milrot E, Luria N, Makdasi E, Beth-Din A, Glinert I, Dombrovsky A, Laskar O. Nanodissection of Selected Viral Particles by Scanning Transmission Electron Microscopy/Focused Ion Beam for Genetic Identification. Anal Chem 2021; 93:13126-13133. [PMID: 34551252 DOI: 10.1021/acs.analchem.1c01001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study presents the development of a new correlative workflow to bridge the gap between electron microscopy imaging and genetic analysis of viruses. The workflow enables the assignment of genetic information to a specific biological entity by harnessing the nanodissection capability of focused ion beam (FIB). This correlative workflow is based on scanning transmission electron microscopy (STEM) and FIB followed by a polymerase chain reaction (PCR). For this purpose, we studied the tomato brown rugose fruit virus (ToBRFV) and the adenovirus that have significant impacts on plant integrity and human health, respectively. STEM imaging was used for the identification and localization of virus particles on a transmission electron microscopy (TEM) grid followed by FIB milling of the desired region of interest. The final-milled product was subjected to genetic analysis by the PCR. The results prove that the FIB-milling process maintains the integrity of the genetic material as confirmed by the PCR. We demonstrate the identification of RNA and DNA viruses extracted from a few micrometers of an FIB-milled TEM grid. This workflow enables the genetic analysis of specifically imaged viral particles directly from heterogeneous clinical samples. In addition to viral diagnostics, the ability to isolate and to genetically identify specific submicrometer structures may prove valuable in additional fields, including subcellular organelle and granule research.
Collapse
Affiliation(s)
- Dror Horvitz
- Electron Microscopy, Thermo Fisher Israel Ltd., HaYarden 1 street, Airport City 7019900, Israel
| | - Elad Milrot
- Department of Infectious Diseases, Israel Institute for Biological Research, P.O.B 19, Ness Ziona 74100, Israel
| | - Neta Luria
- Department of Plant Pathology, ARO, The Volcani Center, Rishon Lezion 50250, Israel
| | - Efi Makdasi
- Department of Infectious Diseases, Israel Institute for Biological Research, P.O.B 19, Ness Ziona 74100, Israel
| | - Adi Beth-Din
- Department of Biochemistry and Molecular Genetics, Israel Institute for Biological Research, P.O.B 19, Ness Ziona 74100, Israel
| | - Itai Glinert
- Department of Infectious Diseases, Israel Institute for Biological Research, P.O.B 19, Ness Ziona 74100, Israel
| | - Aviv Dombrovsky
- Department of Plant Pathology, ARO, The Volcani Center, Rishon Lezion 50250, Israel
| | - Orly Laskar
- Department of Infectious Diseases, Israel Institute for Biological Research, P.O.B 19, Ness Ziona 74100, Israel
| |
Collapse
|
44
|
Kapp ME, Fogo AB, Roufouse C, Najafian B, Radhakrishnan J, Mohan S, Miller SE, D’Agati VD, Silberzweig J, Barbar T, Gopalan T, Srivatana V, Mokrzycki MH, Benstein JA, Ng YH, Lentine KL, Aggarwal V, Perl J, Salenger P, Koyner JL, Josephson MA, Heung M, Velez JC, Ikizler A, Vijayan A, William P, Thajudeen B, Slepian MJ. Renal Considerations in COVID-19: Biology, Pathology, and Pathophysiology. ASAIO J 2021; 67:1087-1096. [PMID: 34191753 PMCID: PMC8478105 DOI: 10.1097/mat.0000000000001530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has emerged into a worldwide pandemic of epic proportion. Beyond pulmonary involvement in coronavirus disease 2019 (COVID-19), a significant subset of patients experiences acute kidney injury. Patients who die from severe disease most notably show diffuse acute tubular injury on postmortem examination with a possible contribution of focal macro- and microvascular thrombi. Renal biopsies in patients with proteinuria and hematuria have demonstrated a glomerular dominant pattern of injury, most notably a collapsing glomerulopathy reminiscent of findings seen in human immunodeficiency virus (HIV) in individuals with apolipoprotein L-1 (APOL1) risk allele variants. Although various mechanisms have been proposed for the pathogenesis of acute kidney injury in SARS-CoV-2 infection, direct renal cell infection has not been definitively demonstrated and our understanding of the spectrum of renal involvement remains incomplete. Herein we discuss the biology, pathology, and pathogenesis of SARS-CoV-2 infection and associated renal involvement. We discuss the molecular biology, risk factors, and pathophysiology of renal injury associated with SARS-CoV-2 infection. We highlight the characteristics of specific renal pathologies based on native kidney biopsy and autopsy. Additionally, a brief discussion on ancillary studies and challenges in the diagnosis of SARS-CoV-2 is presented.
Collapse
Affiliation(s)
- Meghan E. Kapp
- From the Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Agnes B. Fogo
- From the Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Candice Roufouse
- Department of Immunology and Inflammation, Centre for Inflammatory Diseases, Imperial College, London, UK
| | - Behzad Najafian
- Department of Laboratory Medicine & Pathology, University of Washington Medicine, Seattle, Washington
| | - Jai Radhakrishnan
- Division of Nephrology, Columbia University Medical Center, New York, New York
| | - Sumit Mohan
- Division of Nephrology, Columbia University Medical Center, New York, New York
| | - Sara E. Miller
- Department of Pathology, Duke University School of Medicine, Durham, North Carolina
| | - Vivette D. D’Agati
- Department of Pathology and Cell Biology, Columbia University, New York, New York
| | | | - Tarek Barbar
- Division of Nephrology, Weill Cornell Medical College, New York, New York
| | - Tulasi Gopalan
- Division of Nephrology, Weill Cornell Medical College, New York, New York
| | - Vesh Srivatana
- Division of Nephrology, Weill Cornell Medical College, New York, New York
| | - Michele H. Mokrzycki
- Division of Nephrology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York
| | - Judith A. Benstein
- Department of Medicine, New York University Tisch Hospital, New York, New York
| | - Yue-Harn Ng
- Division of Nephrology, University of Washington, Seattle, Washington
| | - Krista L. Lentine
- Division of Nephrology (9-FDT), Center for Abdominal Transplantation, St. Louis, Missouri
| | - Vikram Aggarwal
- Division of Nephrology, Northwestern Medicine, Chicago, Illinois
| | - Jeffrey Perl
- Division of Nephrology, University of Toronto, Toronto, Ontario, Canada
| | | | - Jay L. Koyner
- Department of Nephrology, University of Chicago, Chicago, Illinois
| | | | - Michael Heung
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan
| | - Juan Carlos Velez
- Department of Nephrology, Ochsner Health System, New Orleans, Louisiana
| | - Alp Ikizler
- Division of Nephrology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anitha Vijayan
- Department of Medicine – Nephrology, Washington University School of Medicine in St Louis, St. Louis, Missouri
| | - Preethi William
- Division of Cardiology, Banner University of Arizona, Tucson, Arizona
| | - Bijin Thajudeen
- Division of Nephrology, Banner University of Arizona, Tucson, Arizona
| | - Marvin J. Slepian
- Departments of Medicine and Biomedical Engineering, Sarver Heart Center, University of Arizona, Tucson, Arizona
| |
Collapse
|
45
|
Just Seeing Is Not Enough for Believing: Immunolabelling as Indisputable Proof of SARS-CoV-2 Virions in Infected Tissue. Viruses 2021; 13:v13091816. [PMID: 34578398 PMCID: PMC8473209 DOI: 10.3390/v13091816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
Background: There is increasing evidence that identification of SARS-CoV-2 virions by transmission electron microscopy could be misleading due to the similar morphology of virions and ubiquitous cell structures. This study thus aimed to establish methods for indisputable proof of the presence of SARS-CoV-2 virions in the observed tissue. Methods: We developed a variant of the correlative microscopy approach for SARS-CoV-2 protein identification using immunohistochemical labelling of SARS-CoV-2 proteins on light and electron microscopy levels. We also performed immunogold labelling of SARS-CoV-2 virions. Results: Immunohistochemistry (IHC) of SARS-CoV-2 nucleocapsid proteins and subsequent correlative microscopy undoubtedly proved the presence of SARS-CoV-2 virions in the analysed human nasopharyngeal tissue. The presence of SARS-CoV-2 virions was also confirmed by immunogold labelling for the first time. Conclusions: Immunoelectron microscopy is the most reliable method for distinguishing intracellular viral particles from normal cell structures of similar morphology and size as virions. Furthermore, we developed a variant of correlative microscopy that allows pathologists to check the results of IHC performed first on routinely used paraffin-embedded samples, followed by semithin, and finally by ultrathin sections. Both methodological approaches indisputably proved the presence of SARS-CoV-2 virions in cells.
Collapse
|
46
|
Bagrov DV, Glukhov GS, Moiseenko AV, Karlova MG, Litvinov DS, Zaitsev PА, Kozlovskaya LI, Shishova AA, Kovpak AA, Ivin YY, Piniaeva AN, Oksanich AS, Volok VP, Osolodkin DI, Ishmukhametov AA, Egorov AM, Shaitan KV, Kirpichnikov MP, Sokolova OS. Structural characterization of β-propiolactone inactivated severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) particles. Microsc Res Tech 2021; 85:562-569. [PMID: 34498784 PMCID: PMC8646525 DOI: 10.1002/jemt.23931] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/22/2021] [Indexed: 12/23/2022]
Abstract
The severe COVID‐19 pandemic drives the research toward the SARS‐CoV‐2 virion structure and the possible therapies against it. Here, we characterized the β‐propiolactone inactivated SARS‐CoV‐2 virions using transmission electron microscopy (TEM) and atomic force microscopy (AFM). We compared the SARS‐CoV‐2 samples purified by two consecutive chromatographic procedures (size exclusion chromatography [SEC], followed by ion‐exchange chromatography [IEC]) with samples purified by ultracentrifugation. The samples prepared using SEC and IEC retained more spikes on the surface than the ones prepared using ultracentrifugation, as confirmed by TEM and AFM. TEM showed that the spike (S) proteins were in the pre‐fusion conformation. Notably, the S proteins could be recognized by specific monoclonal antibodies. Analytical TEM showed that the inactivated virions retained nucleic acid. Altogether, we demonstrated that the inactivated SARS‐CoV‐2 virions retain the structural features of native viruses and provide a prospective vaccine candidate.
Collapse
Affiliation(s)
- Dmitry V Bagrov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia
| | - Grigory S Glukhov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Andrey V Moiseenko
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | - Maria G Karlova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Daniil S Litvinov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Petr А Zaitsev
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Liubov I Kozlovskaya
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Anna A Shishova
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Anastasia A Kovpak
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia
| | - Yury Y Ivin
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia
| | - Anastasia N Piniaeva
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia
| | | | - Viktor P Volok
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia
| | - Dmitry I Osolodkin
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russia.,Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Aydar A Ishmukhametov
- Chumakov Federal Scientific Center for Research and Development of Immune-and-Biological Products of Russian Academy of Sciences (Institute of Poliomyelitis), Moscow, Russia.,Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Alexey M Egorov
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia.,Mechnikov Research Institute of Vaccines and Sera, Moscow, Russia
| | - Konstantin V Shaitan
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,N. N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, Russia
| | | | - Olga S Sokolova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, Russia.,Biology Department, MSU-BIT University, Shenzhen, China
| |
Collapse
|
47
|
Hemida MG. The next-generation coronavirus diagnostic techniques with particular emphasis on the SARS-CoV-2. J Med Virol 2021; 93:4219-4241. [PMID: 33751621 PMCID: PMC8207115 DOI: 10.1002/jmv.26926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 12/15/2022]
Abstract
The potential zoonotic coronaviruses (SARS-CoV, MERS-CoV, and SARS-CoV-2) are of global health concerns. Early diagnosis is the milestone in their mitigation, control, and eradication. Many diagnostic techniques are showing great success and have many advantages, such as the rapid turnover of the results, high accuracy, and high specificity and sensitivity. However, some of these techniques have several pitfalls if samples were not collected, processed, and transported in the standard ways and if these techniques were not practiced with extreme caution and precision. This may lead to false-negative/positive results. This may affect the downstream management of the affected cases. These techniques require regular fine-tuning, upgrading, and optimization. The continuous evolution of new strains and viruses belong to the coronaviruses is hampering the success of many classical techniques. There are urgent needs for next generations of coronaviruses diagnostic assays that overcome these pitfalls. This new generation of diagnostic tests should be able to do simultaneous, multiplex, and high-throughput detection of various coronavirus in one reaction. Furthermore, the development of novel assays and techniques that enable the in situ detection of the virus on the environmental samples, especially air, water, and surfaces, should be given considerable attention in the future. These approaches will have a substantial positive impact on the mitigation and eradication of coronaviruses, including the current SARS-CoV-2 pandemic.
Collapse
Affiliation(s)
- Maged G. Hemida
- Department of Microbiology, College of Veterinary MedicineKing Faisal UniversityAl AhsaSaudi Arabia
- Department of Virology, Faculty of Veterinary MedicineKafrelsheikh UniversityKafr ElsheikhEgypt
| |
Collapse
|
48
|
Characteristics of Chimeric West Nile Virus Based on the Japanese Encephalitis Virus SA14-14-2 Backbone. Viruses 2021; 13:v13071262. [PMID: 34209472 PMCID: PMC8309971 DOI: 10.3390/v13071262] [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: 03/22/2021] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 11/16/2022] Open
Abstract
West Nile virus disease (WND) is an arthropod-borne zoonosis responsible for nonspecific fever or severe encephalitis. The pathogen is West Nile virus belonging to the genus Flavivirus, family Flaviviridae. Every year, thousands of cases were reported, which poses significant public health risk. Here, we constructed a West Nile virus chimera, ChiVax-WN01, by replacing the prMΔE gene of JEV SA14-14-2 with that of the West Nile virus NY99. The ChiVax-WN01 chimera showed clear, different characters compared with that of JEV SA14-14-2 and WNV NY99 strain. An animal study indicated that the ChiVax-WN01 chimera presented moderate safety and immunogenicity for 4-week female BALB/c mice.
Collapse
|
49
|
Taniguchi M, Minami S, Ono C, Hamajima R, Morimura A, Hamaguchi S, Akeda Y, Kanai Y, Kobayashi T, Kamitani W, Terada Y, Suzuki K, Hatori N, Yamagishi Y, Washizu N, Takei H, Sakamoto O, Naono N, Tatematsu K, Washio T, Matsuura Y, Tomono K. Combining machine learning and nanopore construction creates an artificial intelligence nanopore for coronavirus detection. Nat Commun 2021; 12:3726. [PMID: 34140500 PMCID: PMC8211865 DOI: 10.1038/s41467-021-24001-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 05/28/2021] [Indexed: 02/08/2023] Open
Abstract
High-throughput, high-accuracy detection of emerging viruses allows for the control of disease outbreaks. Currently, reverse transcription-polymerase chain reaction (RT-PCR) is currently the most-widely used technology to diagnose the presence of SARS-CoV-2. However, RT-PCR requires the extraction of viral RNA from clinical specimens to obtain high sensitivity. Here, we report a method for detecting novel coronaviruses with high sensitivity by using nanopores together with artificial intelligence, a relatively simple procedure that does not require RNA extraction. Our final platform, which we call the artificially intelligent nanopore, consists of machine learning software on a server, a portable high-speed and high-precision current measuring instrument, and scalable, cost-effective semiconducting nanopore modules. We show that artificially intelligent nanopores are successful in accurately identifying four types of coronaviruses similar in size, HCoV-229E, SARS-CoV, MERS-CoV, and SARS-CoV-2. Detection of SARS-CoV-2 in saliva specimen is achieved with a sensitivity of 90% and specificity of 96% with a 5-minute measurement.
Collapse
Affiliation(s)
- Masateru Taniguchi
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan.
| | - Shohei Minami
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Chikako Ono
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,Center for Infectious Diseases Education and Research, Osaka University, Suita, Osaka, Japan
| | - Rina Hamajima
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Ayumi Morimura
- Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - Shigeto Hamaguchi
- Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.,Osaka University Hospital, Osaka University, Suita, Osaka, Japan
| | - Yukihiro Akeda
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.,Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.,Osaka University Hospital, Osaka University, Suita, Osaka, Japan
| | - Yuta Kanai
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Takeshi Kobayashi
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
| | - Wataru Kamitani
- Graduate School of Medicine, Gunma University, Maebashi, Gunma, Japan
| | - Yutaka Terada
- Center for Vaccine Research, University of Pittsburgh, Pittsburgh, PA, USA
| | - Koichiro Suzuki
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Nobuaki Hatori
- The Research Foundation for Microbial Diseases of Osaka University, Suita, Osaka, Japan
| | - Yoshiaki Yamagishi
- Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.,Osaka University Hospital, Osaka University, Suita, Osaka, Japan.,Medical Center for Translational and Clinical Research, Osaka University Hospital, Osaka University, Suita, Osaka, Japan
| | | | | | | | | | - Kenji Tatematsu
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Takashi Washio
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Yoshiharu Matsuura
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan. .,Center for Infectious Diseases Education and Research, Osaka University, Suita, Osaka, Japan.
| | - Kazunori Tomono
- Graduate School of Medicine, Osaka University, Suita, Osaka, Japan. .,Osaka University Hospital, Osaka University, Suita, Osaka, Japan.
| |
Collapse
|
50
|
Lu S, Lin S, Zhang H, Liang L, Shen S. Methods of Respiratory Virus Detection: Advances towards Point-of-Care for Early Intervention. MICROMACHINES 2021; 12:mi12060697. [PMID: 34203612 PMCID: PMC8232111 DOI: 10.3390/mi12060697] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/27/2021] [Accepted: 06/08/2021] [Indexed: 01/23/2023]
Abstract
Respiratory viral infections threaten human life and inflict an enormous healthcare burden worldwide. Frequent monitoring of viral antibodies and viral load can effectively help to control the spread of the virus and make timely interventions. However, current methods for detecting viral load require dedicated personnel and are time-consuming. Additionally, COVID-19 detection is generally relied on an automated PCR analyzer, which is highly instrument-dependent and expensive. As such, emerging technologies in the development of respiratory viral load assays for point-of-care (POC) testing are urgently needed for viral screening. Recent advances in loop-mediated isothermal amplification (LAMP), biosensors, nanotechnology-based paper strips and microfluidics offer new strategies to develop a rapid, low-cost, and user-friendly respiratory viral monitoring platform. In this review, we summarized the traditional methods in respiratory virus detection and present the state-of-art technologies in the monitoring of respiratory virus at POC.
Collapse
Affiliation(s)
- Siming Lu
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou 310003, China; (S.L.); (H.Z.)
- Department of Laboratory Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China;
| | - Sha Lin
- Department of Laboratory Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China;
| | - Hongrui Zhang
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou 310003, China; (S.L.); (H.Z.)
| | - Liguo Liang
- Department of Laboratory Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China;
- Centre for Clinical Laboratory, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian Road, Hangzhou 310006, China
- Correspondence: (L.L.); (S.S.); Tel.: +86-15861481568 (L.L.)
| | - Shien Shen
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou 310003, China; (S.L.); (H.Z.)
- Correspondence: (L.L.); (S.S.); Tel.: +86-15861481568 (L.L.)
| |
Collapse
|