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Santos-Ferreira N, Van Dycke J, Chiu W, Neyts J, Matthijnssens J, Rocha-Pereira J. Molnupiravir inhibits human norovirus and rotavirus replication in 3D human intestinal enteroids. Antiviral Res 2024; 223:105839. [PMID: 38373532 DOI: 10.1016/j.antiviral.2024.105839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 02/13/2024] [Accepted: 02/16/2024] [Indexed: 02/21/2024]
Abstract
Human norovirus (HuNoV) and human rotavirus (HRV) are the leading causes of gastrointestinal diarrhea. There are no approved antivirals and rotavirus vaccines are insufficient to cease HRV associated mortality. Furthermore, treatment of chronically infected immunocompromised patients is limited to off-label compassionate use of repurposed antivirals with limited efficacy, highlighting the urgent need of potent and specific antivirals for HuNoV and HRV. Recently, a major breakthrough in the in vitro cultivation of HuNoV and HRV derived from the use of human intestinal enteroids (HIEs). The replication of multiple circulating HuNoV and HRV genotypes can finally be studied and both in the same non-transformed and physiologically relevant model. Activity of previously described anti-norovirus or anti-rotavirus drugs, such as 2'-C-methylcytidine (2CMC), 7-deaza-2'-C-methyladenosine (7DMA), nitazoxanide, favipiravir and dasabuvir, was assessed against clinically relevant human genotypes using 3D-HIEs. 2CMC showed the best activity against HuNoV GII.4, while 7DMA was the most potent antiviral against HRV. We identified the anti-norovirus and -rotavirus activity of molnupiravir and its active metabolite, N4-hydroxycytidine (NHC), a broad-spectrum antiviral used to treat coronavirus disease 2019 (COVID-19). Molnupiravir and NHC inhibit HuNoV GII.4, HRV G1P[8], G2P[4] and G4P[6] in 3D-HIEs with high selectivity and show a potency comparable to 2CMC against HuNoV. Moreover, molnupiravir and NHC block HRV viroplasm formation, but do not alter its size or subcellular localization. Taken together, molnupiravir inhibits both HuNoV and HRV replication, suggesting that the drug could be a candidate for the treatment of patients chronically infected with either one of these diarrhea causing viruses.
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Affiliation(s)
- Nanci Santos-Ferreira
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Jana Van Dycke
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Jelle Matthijnssens
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium
| | - Joana Rocha-Pereira
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium.
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2
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Li LH, Chiu W, Huang YA, Rasulova M, Vercruysse T, Thibaut HJ, Ter Horst S, Rocha-Pereira J, Vanhoof G, Borrenberghs D, Goethals O, Kaptein SJF, Leyssen P, Neyts J, Dallmeier K. Multiplexed multicolor antiviral assay amenable for high-throughput research. Nat Commun 2024; 15:42. [PMID: 38168091 PMCID: PMC10761739 DOI: 10.1038/s41467-023-44339-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 12/08/2023] [Indexed: 01/05/2024] Open
Abstract
To curb viral epidemics and pandemics, antiviral drugs are needed with activity against entire genera or families of viruses. Here, we develop a cell-based multiplex antiviral assay for high-throughput screening against multiple viruses at once, as demonstrated by using three distantly related orthoflaviviruses: dengue, Japanese encephalitis and yellow fever virus. Each virus is tagged with a distinct fluorescent protein, enabling individual monitoring in cell culture through high-content imaging. Specific antisera and small-molecule inhibitors are employed to validate that multiplexing approach yields comparable inhibition profiles to single-virus infection assays. To facilitate downstream analysis, a kernel is developed to deconvolute and reduce the multidimensional quantitative data to three cartesian coordinates. The methodology is applicable to viruses from different families as exemplified by co-infections with chikungunya, parainfluenza and Bunyamwera viruses. The multiplex approach is expected to facilitate the discovery of broader-spectrum antivirals, as shown in a pilot screen of approximately 1200 drug-like small-molecules.
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Affiliation(s)
- Li-Hsin Li
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
- Molecular Vaccinology and Vaccine Discovery group, Leuven, Belgium
| | - Winston Chiu
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Yun-An Huang
- KU Leuven Department of Neuroscience, Research Group Neurophysiology, Laboratory for Circuit Neuroscience, Leuven, Belgium
- Vlaams Instituut voor Biotechnologie, Neuro-Electronics Research Flanders (NERF), Leuven, Belgium
| | - Madina Rasulova
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Translational Platform Virology and Chemotherapy (TPVC), Leuven, Belgium
| | - Thomas Vercruysse
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Translational Platform Virology and Chemotherapy (TPVC), Leuven, Belgium
- AstriVax, Heverlee, Belgium
| | - Hendrik Jan Thibaut
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Translational Platform Virology and Chemotherapy (TPVC), Leuven, Belgium
| | - Sebastiaan Ter Horst
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
- Cerba Research, Rotterdam, The Netherlands
| | - Joana Rocha-Pereira
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Greet Vanhoof
- Janssen Therapeutics Discovery, Janssen Pharmaceutica, NV, Beerse, Belgium
| | | | - Olivia Goethals
- Janssen Global Public Health, Janssen Pharmaceutica, NV, Beerse, Belgium
| | - Suzanne J F Kaptein
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Pieter Leyssen
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Johan Neyts
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Kai Dallmeier
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium.
- Molecular Vaccinology and Vaccine Discovery group, Leuven, Belgium.
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3
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Wang X, Chiu W, Klaassen H, Marchand A, Chaltin P, Neyts J, Jochmans D. A Robust Phenotypic High-Throughput Antiviral Assay for the Discovery of Rabies Virus Inhibitors. Viruses 2023; 15:2292. [PMID: 38140533 PMCID: PMC10747594 DOI: 10.3390/v15122292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023] Open
Abstract
Rabies virus (RABV) causes severe neurological symptoms in mammals. The disease is almost inevitably lethal as soon as clinical symptoms appear. The use of rabies immunoglobulins (RIG) and vaccination in post-exposure prophylaxis (PEP) can provide efficient protection, but many people do not receive this treatment due to its high cost and/or limited availability. Highly potent small molecule antivirals are urgently needed to treat patients once symptoms develop. In this paper, we report on the development of a high-throughput phenotypic antiviral screening assay based on the infection of BHK-21 cells with a fluorescent reporter virus and high content imaging readout. The assay was used to screen a repurposing library of 3681 drugs (all had been studied in phase 1 clinical trials). From this series, salinomycin was found to selectively inhibit viral replication by blocking infection at the entry stage. This shows that a high-throughput assay enables the screening of large compound libraries for the purposes of identifying inhibitors of RABV replication. These can then be optimized through medicinal chemistry efforts and further developed into urgently needed drugs for the treatment of symptomatic rabies.
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Affiliation(s)
- Xinyu Wang
- Rega Institute, Department of Microbiology, Immunology and Transplantation, KU Leuven, Herestraat 49 Box 1043, 3000 Leuven, Belgium; (X.W.); (W.C.)
| | - Winston Chiu
- Rega Institute, Department of Microbiology, Immunology and Transplantation, KU Leuven, Herestraat 49 Box 1043, 3000 Leuven, Belgium; (X.W.); (W.C.)
| | - Hugo Klaassen
- Cistim Leuven vzw, Bioincubator 2, Gaston Geenslaan 2, 3001 Leuven, Belgium; (H.K.); (A.M.); (P.C.)
| | - Arnaud Marchand
- Cistim Leuven vzw, Bioincubator 2, Gaston Geenslaan 2, 3001 Leuven, Belgium; (H.K.); (A.M.); (P.C.)
| | - Patrick Chaltin
- Cistim Leuven vzw, Bioincubator 2, Gaston Geenslaan 2, 3001 Leuven, Belgium; (H.K.); (A.M.); (P.C.)
- Center for Drug Design and Discovery (CD3), KU Leuven R&D, 3000 Leuven, Belgium
| | - Johan Neyts
- Rega Institute, Department of Microbiology, Immunology and Transplantation, KU Leuven, Herestraat 49 Box 1043, 3000 Leuven, Belgium; (X.W.); (W.C.)
| | - Dirk Jochmans
- Rega Institute, Department of Microbiology, Immunology and Transplantation, KU Leuven, Herestraat 49 Box 1043, 3000 Leuven, Belgium; (X.W.); (W.C.)
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4
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Saul S, Karim M, Ghita L, Huang PT, Chiu W, Durán V, Lo CW, Kumar S, Bhalla N, Leyssen P, Alem F, Boghdeh NA, Tran DH, Cohen CA, Brown JA, Huie KE, Tindle C, Sibai M, Ye C, Khalil AM, Chiem K, Martinez-Sobrido L, Dye JM, Pinsky BA, Ghosh P, Das S, Solow-Cordero DE, Jin J, Wikswo JP, Jochmans D, Neyts J, De Jonghe S, Narayanan A, Einav S. Anticancer pan-ErbB inhibitors reduce inflammation and tissue injury and exert broad-spectrum antiviral effects. J Clin Invest 2023; 133:e169510. [PMID: 37581931 PMCID: PMC10541190 DOI: 10.1172/jci169510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 08/10/2023] [Indexed: 08/17/2023] Open
Abstract
Targeting host factors exploited by multiple viruses could offer broad-spectrum solutions for pandemic preparedness. Seventeen candidates targeting diverse functions emerged in a screen of 4,413 compounds for SARS-CoV-2 inhibitors. We demonstrated that lapatinib and other approved inhibitors of the ErbB family of receptor tyrosine kinases suppress replication of SARS-CoV-2, Venezuelan equine encephalitis virus (VEEV), and other emerging viruses with a high barrier to resistance. Lapatinib suppressed SARS-CoV-2 entry and later stages of the viral life cycle and showed synergistic effect with the direct-acting antiviral nirmatrelvir. We discovered that ErbB1, ErbB2, and ErbB4 bind SARS-CoV-2 S1 protein and regulate viral and ACE2 internalization, and they are required for VEEV infection. In human lung organoids, lapatinib protected from SARS-CoV-2-induced activation of ErbB-regulated pathways implicated in non-infectious lung injury, proinflammatory cytokine production, and epithelial barrier injury. Lapatinib suppressed VEEV replication, cytokine production, and disruption of blood-brain barrier integrity in microfluidics-based human neurovascular units, and reduced mortality in a lethal infection murine model. We validated lapatinib-mediated inhibition of ErbB activity as an important mechanism of antiviral action. These findings reveal regulation of viral replication, inflammation, and tissue injury via ErbBs and establish a proof of principle for a repurposed, ErbB-targeted approach to combat emerging viruses.
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Affiliation(s)
- Sirle Saul
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Marwah Karim
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Luca Ghita
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Pei-Tzu Huang
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Verónica Durán
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
- Chan Zuckerberg Biohub, San Francisco, California, USA
| | - Chieh-Wen Lo
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Sathish Kumar
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Nishank Bhalla
- National Center for Biodefense and Infectious Disease, Biomedical Research Laboratory, and
| | - Pieter Leyssen
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Farhang Alem
- Institute for Biohealth Innovation, George Mason University, Manassas, Virginia, USA
| | - Niloufar A. Boghdeh
- Institute for Biohealth Innovation, George Mason University, Manassas, Virginia, USA
| | - Do H.N. Tran
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
| | - Courtney A. Cohen
- US Army Medical Research Institute of Infectious Diseases, Viral Immunology Branch, Frederick, Maryland, USA
| | - Jacquelyn A. Brown
- Department of Physics and Astronomy, Vanderbilt Institute for Integrative Biosystems Research and Education, Vanderbilt University, Nashville, Tennessee, USA
| | - Kathleen E. Huie
- US Army Medical Research Institute of Infectious Diseases, Viral Immunology Branch, Frederick, Maryland, USA
| | - Courtney Tindle
- Department of Cellular and Molecular Medicine and
- HUMANOID Center of Research Excellence, UCSD, San Diego, California, USA
| | - Mamdouh Sibai
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
| | - Chengjin Ye
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Ahmed Magdy Khalil
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Kevin Chiem
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Luis Martinez-Sobrido
- Disease Prevention and Intervention, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - John M. Dye
- US Army Medical Research Institute of Infectious Diseases, Viral Immunology Branch, Frederick, Maryland, USA
| | - Benjamin A. Pinsky
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
| | - Pradipta Ghosh
- Department of Cellular and Molecular Medicine and
- HUMANOID Center of Research Excellence, UCSD, San Diego, California, USA
- Department of Medicine and
| | - Soumita Das
- HUMANOID Center of Research Excellence, UCSD, San Diego, California, USA
- Department of Pathology, UCSD, San Diego, California, USA
| | | | - Jing Jin
- Vitalant Research Institute, San Francisco, California, USA
| | - John P. Wikswo
- Department of Biomedical Engineering, Department of Molecular Physiology and Biophysics, and Department of Physics and Astronomy, Vanderbilt Institute for Integrative Biosystems Research and Education, Vanderbilt University, Nashville, Tennessee, USA
| | - Dirk Jochmans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Aarthi Narayanan
- National Center for Biodefense and Infectious Disease, Biomedical Research Laboratory, and
- School of Systems Biology, George Mason University, Manassas, Virginia, USA
| | - Shirit Einav
- Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University, Stanford, California, USA
- Chan Zuckerberg Biohub, San Francisco, California, USA
- Department of Microbiology and Immunology, Stanford University, Stanford, California, USA
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5
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Lemmens V, Kelchtermans L, Debaveye S, Chiu W, Vercruysse T, Ma J, Thibaut HJ, Neyts J, Sanchez-Felipe L, Dallmeier K. YF17D-vectored Ebola vaccine candidate protects mice against lethal surrogate Ebola and yellow fever virus challenge. NPJ Vaccines 2023; 8:99. [PMID: 37433816 DOI: 10.1038/s41541-023-00699-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 06/27/2023] [Indexed: 07/13/2023] Open
Abstract
Ebola virus (EBOV) and related filoviruses such as Sudan virus (SUDV) threaten global public health. Effective filovirus vaccines are available only for EBOV, yet restricted to emergency use considering a high reactogenicity and demanding logistics. Here we present YF-EBO, a live YF17D-vectored dual-target vaccine candidate expressing EBOV glycoprotein (GP) as protective antigen. Safety of YF-EBO in mice was further improved over that of parental YF17D vaccine. A single dose of YF-EBO was sufficient to induce high levels of EBOV GP-specific antibodies and cellular immune responses, that protected against lethal infection using EBOV GP-pseudotyped recombinant vesicular stomatitis virus (rVSV-EBOV) in interferon-deficient (Ifnar-/-) mice as surrogate challenge model. Concomitantly induced yellow fever virus (YFV)-specific immunity protected Ifnar-/- mice against intracranial YFV challenge. YF-EBO could thus help to simultaneously combat both EBOV and YFV epidemics. Finally, we demonstrate how to target other highly pathogenic filoviruses such as SUDV at the root of the 2022 outbreak in Uganda.
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Affiliation(s)
- Viktor Lemmens
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
| | - Lara Kelchtermans
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
| | - Sarah Debaveye
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
| | - Winston Chiu
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
| | - Thomas Vercruysse
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Translational Platform Virology and Chemotherapy (TPVC), BE-3000, Leuven, Belgium
- AstriVax, BE-3001, Heverlee, Belgium
| | - Ji Ma
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
| | - Hendrik Jan Thibaut
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Translational Platform Virology and Chemotherapy (TPVC), BE-3000, Leuven, Belgium
| | - Johan Neyts
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium
- GVN, Global Virus Network, Baltimore, MD, USA
| | - Lorena Sanchez-Felipe
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium.
| | - Kai Dallmeier
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Virology and Chemotherapy, Molecular Vaccinology & Vaccine Discovery, BE-3000, Leuven, Belgium.
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6
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Saul S, Karim M, Ghita L, Huang PT, Chiu W, Durán V, Lo CW, Kumar S, Bhalla N, Leyssen P, Alem F, Boghdeh NA, Tran DH, Cohen CA, Brown JA, Huie KE, Tindle C, Sibai M, Ye C, Khalil AM, Martinez-Sobrido L, Dye JM, Pinsky BA, Ghosh P, Das S, Solow-Cordero DE, Jin J, Wikswo JP, Jochmans D, Neyts J, Jonghe SD, Narayanan A, Einav S. Anticancer pan-ErbB inhibitors reduce inflammation and tissue injury and exert broad-spectrum antiviral effects. bioRxiv 2023:2021.05.15.444128. [PMID: 34159337 PMCID: PMC8219101 DOI: 10.1101/2021.05.15.444128] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Targeting host factors exploited by multiple viruses could offer broad-spectrum solutions for pandemic preparedness. Seventeen candidates targeting diverse functions emerged in a screen of 4,413 compounds for SARS-CoV-2 inhibitors. We demonstrated that lapatinib and other approved inhibitors of the ErbB family receptor tyrosine kinases suppress replication of SARS-CoV-2, Venezuelan equine encephalitis virus (VEEV), and other emerging viruses with a high barrier to resistance. Lapatinib suppressed SARS-CoV-2 entry and later stages of the viral life cycle and showed synergistic effect with the direct-acting antiviral nirmatrelvir. We discovered that ErbB1, 2 and 4 bind SARS-CoV-2 S1 protein and regulate viral and ACE2 internalization, and they are required for VEEV infection. In human lung organoids, lapatinib protected from SARS-CoV-2-induced activation of ErbB-regulated pathways implicated in non-infectious lung injury, pro-inflammatory cytokine production, and epithelial barrier injury. Lapatinib suppressed VEEV replication, cytokine production and disruption of the blood-brain barrier integrity in microfluidic-based human neurovascular units, and reduced mortality in a lethal infection murine model. We validated lapatinib-mediated inhibition of ErbB activity as an important mechanism of antiviral action. These findings reveal regulation of viral replication, inflammation, and tissue injury via ErbBs and establish a proof-of-principle for a repurposed, ErbB-targeted approach to combat emerging viruses.
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7
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Doijen J, Temmerman K, Van den Eynde C, Diels A, Van den Broeck N, Van Gool M, Heo I, Jaensch S, Zwaagstra M, Diosa Toro M, Chiu W, De Jonghe S, Leyssen P, Bojkova D, Ciesek S, Cinatl J, Verschueren L, Buyck C, Van Kuppeveld F, Neyts J, Van Loock M, Van Damme E. Identification of Z-Tyr-Ala-CHN 2, a Cathepsin L Inhibitor with Broad-Spectrum Cell-Specific Activity against Coronaviruses, including SARS-CoV-2. Microorganisms 2023; 11:717. [PMID: 36985290 PMCID: PMC10055926 DOI: 10.3390/microorganisms11030717] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/17/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
The ongoing COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is partly under control by vaccination. However, highly potent and safe antiviral drugs for SARS-CoV-2 are still needed to avoid development of severe COVID-19. We report the discovery of a small molecule, Z-Tyr-Ala-CHN2, which was identified in a cell-based antiviral screen. The molecule exerts sub-micromolar antiviral activity against SARS-CoV-2, SARS-CoV-1, and human coronavirus 229E. Time-of-addition studies reveal that Z-Tyr-Ala-CHN2 acts at the early phase of the infection cycle, which is in line with the observation that the molecule inhibits cathepsin L. This results in antiviral activity against SARS-CoV-2 in VeroE6, A549-hACE2, and HeLa-hACE2 cells, but not in Caco-2 cells or primary human nasal epithelial cells since the latter two cell types also permit entry via transmembrane protease serine subtype 2 (TMPRSS2). Given their cell-specific activity, cathepsin L inhibitors still need to prove their value in the clinic; nevertheless, the activity profile of Z-Tyr-Ala-CHN2 makes it an interesting tool compound for studying the biology of coronavirus entry and replication.
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Affiliation(s)
- Jordi Doijen
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Koen Temmerman
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | | | - Annick Diels
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | | | | | - Inha Heo
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Steffen Jaensch
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Marleen Zwaagstra
- Faculty of Veterinary Medicine, Yalelaan 1, Virology Division, Department of Biomolecular Health Sciences, Infectious Diseases and Immunology, Utrecht University, 3584 Utrecht, The Netherlands
| | - Mayra Diosa Toro
- Faculty of Veterinary Medicine, Yalelaan 1, Virology Division, Department of Biomolecular Health Sciences, Infectious Diseases and Immunology, Utrecht University, 3584 Utrecht, The Netherlands
| | - Winston Chiu
- Laboratory of Virology and Chemotherapy, Herestraat 49, Rega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Steven De Jonghe
- Laboratory of Virology and Chemotherapy, Herestraat 49, Rega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Pieter Leyssen
- Laboratory of Virology and Chemotherapy, Herestraat 49, Rega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Denisa Bojkova
- Institute for Medical Virology, University Hospital, Paul-Ehrlich-Str. 40, Frankfurt University, 60596 Frankfurt am Main, Germany
| | - Sandra Ciesek
- Institute for Medical Virology, University Hospital, Paul-Ehrlich-Str. 40, Frankfurt University, 60596 Frankfurt am Main, Germany
| | - Jindrich Cinatl
- Institute for Medical Virology, University Hospital, Paul-Ehrlich-Str. 40, Frankfurt University, 60596 Frankfurt am Main, Germany
| | - Lore Verschueren
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Christophe Buyck
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Frank Van Kuppeveld
- Faculty of Veterinary Medicine, Yalelaan 1, Virology Division, Department of Biomolecular Health Sciences, Infectious Diseases and Immunology, Utrecht University, 3584 Utrecht, The Netherlands
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Herestraat 49, Rega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, 3000 Leuven, Belgium
| | - Marnix Van Loock
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Ellen Van Damme
- Janssen Pharmaceutica NV, Turnhoutseweg 30, 2340 Beerse, Belgium
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8
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Vanhoutte R, Barniol-Xicota M, Chiu W, Vangeel L, Jochmans D, De Jonghe S, Zidane H, Barr HM, London N, Neyts J, Verhelst SHL. Azapeptide activity-based probes for the SARS-CoV-2 main protease enable visualization of inhibition in infected cells. Chem Sci 2023; 14:1666-1672. [PMID: 36819852 PMCID: PMC9931053 DOI: 10.1039/d2sc04147b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 01/02/2023] [Indexed: 01/08/2023] Open
Abstract
The COVID-19 pandemic has revealed the vulnerability of the modern, global society. With expected waves of future infections by SARS-CoV-2, treatment options for infected individuals will be crucial in order to decrease mortality and hospitalizations. The SARS-CoV-2 main protease is a validated drug target, for which the first inhibitor has been approved for use in patients. To facilitate future work on this drug target, we designed a solid-phase synthesis route towards azapeptide activity-based probes that are capped with a cysteine-reactive electrophile for covalent modification of the active site of Mpro. This design led to the most potent ABP for Mpro and one of the most potent inhibitors reported thus far. We demonstrate that this ABP can be used to visualize Mpro activity and target engagement by drugs in infected cells.
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Affiliation(s)
- Roeland Vanhoutte
- Department of Cellular and Molecular Medicine, Laboratory of Chemical Biology, KU Leuven Herestraat 49 box 802 3000 Leuven Belgium
| | - Marta Barniol-Xicota
- Department of Cellular and Molecular Medicine, Laboratory of Chemical Biology, KU Leuven Herestraat 49 box 802 3000 Leuven Belgium
| | - Winston Chiu
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU LeuvenHerestraat 49, Box 10433000LeuvenBelgium
| | - Laura Vangeel
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU LeuvenHerestraat 49, Box 10433000LeuvenBelgium
| | - Dirk Jochmans
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU LeuvenHerestraat 49, Box 10433000LeuvenBelgium
| | - Steven De Jonghe
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU LeuvenHerestraat 49, Box 10433000LeuvenBelgium
| | - Hadeer Zidane
- Maurice and Vivienne Wohl Institute for Drug Discovery, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, The Weizmann Institute of ScienceRehovot 7610001Israel
| | - Haim M. Barr
- Maurice and Vivienne Wohl Institute for Drug Discovery, The Nancy and Stephen Grand Israel National Center for Personalized Medicine, The Weizmann Institute of ScienceRehovot 7610001Israel
| | - Nir London
- Department of Chemical and Structural Biology, Weizmann Institute of ScienceRehovot 7610001Israel
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU LeuvenHerestraat 49, Box 10433000LeuvenBelgium
| | - Steven H. L. Verhelst
- Department of Cellular and Molecular Medicine, Laboratory of Chemical Biology, KU LeuvenHerestraat 49 box 8023000 LeuvenBelgium,AG Chemical Proteomics, Leibniz Institute for Analytical Sciences ISASOtto-Hahn-Str. 6b44227 DortmundGermany
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9
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Chiu W, Schepers J, Francken T, Vangeel L, Abbasi K, Jochmans D, De Jonghe S, Thibaut HJ, Thiel V, Neyts J, Laporte M, Leyssen P. Development of a robust and convenient dual-reporter high-throughput screening assay for SARS-CoV-2 antiviral drug discovery. Antiviral Res 2023; 210:105506. [PMID: 36565756 PMCID: PMC9767876 DOI: 10.1016/j.antiviral.2022.105506] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022]
Abstract
Massive efforts on both vaccine development and antiviral research were launched to combat the new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). We contributed, amongst others, by the development of a high-throughput screening (HTS) antiviral assay against SARS-CoV-2 using a fully automated, high-containment robot system. Here, we describe the development of this novel, convenient and phenotypic dual-reporter virus-cell-based high-content imaging assay using the A549+hACE2+TMPRSS2_mCherry reporter lung carcinoma cell line and an ancestral SARS-CoV-2_Wuhan_mNeonGreen reporter virus. Briefly, by means of clonal selection, a host cell subclone was selected that (i) efficiently supports replication of the reporter virus with high expression, upon infection, of the NeonGreen fluorescent reporter protein, (ii) that is not affected by virus-induced cytopathogenic effects and, (iii) that expresses a strong fluorescent mCherry signal in the nucleus. The selected clone matched these criteria with an infection rate on average of 75% with limited cell death. The average (R)Z'-factors of the assay plates were all >0.8, which indicates a robust assay suitable for HTS purposes. A selection of reference compounds that inhibits SARS-CoV-2 replication in vitro were used to validate this novel dual-reporter assay and confirms the data reported in the literature. This assay is a convenient and powerful tool for HTS of large compound libraries against SARS-CoV-2.
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Affiliation(s)
- Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Joost Schepers
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Thibault Francken
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Laura Vangeel
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Kayvan Abbasi
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Dirk Jochmans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Hendrik Jan Thibaut
- KU Leuven Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Translational Platform Virology and Chemotherapy, Gaston Geenslaan 2, 3001, Leuven, Belgium
| | - Volker Thiel
- Institute of Virology and Immunology (IVI), Bern, Switzerland,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Manon Laporte
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 – box 1043, 3000, Leuven, Belgium
| | - Pieter Leyssen
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium.
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10
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Martinez-Gualda B, Graus M, Camps A, Vanhulle E, Saul S, Azari S, Nhu Tran DH, Vangeel L, Chiu W, Neyts J, Schols D, Einav S, Vermeire K, De Jonghe S. Synthesis and evaluation of 3-alkynyl-5-aryl-7-aza-indoles as broad-spectrum antiviral agents. Front Chem 2022; 10:1058229. [PMID: 36385995 PMCID: PMC9643853 DOI: 10.3389/fchem.2022.1058229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022] Open
Abstract
RNA viral infections, including those caused by respiratory syncytial virus (RSV), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and Venezuelan Equine encephalitis virus (VEEV), pose a major global health challenge. Here, we report the synthesis and screening of a series of pyrrolo[2,3-b]pyridines targeting RSV, SARS-CoV-2 and/or VEEV. From this campaign, a series of lead compounds was generated that demonstrated antiviral activity in the low single-digit micromolar range against the various viruses and did not show cytotoxicity. These findings highlight the potential of 3-alkynyl-5-aryl-7-aza-indoles as a promising chemotype for the development of broad-spectrum antiviral agents.
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11
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El Mansouri AE, Lachhab S, Oubella A, Ahmad M, Neyts J, Jochmans D, Chiu W, Vangeel L, De Jonghe S, Morjani H, Ali MA, Zahouily M, Sanghvi YS, Lazrek HB. Synthesis, characterization, molecular docking, and anticancer activities of new 1,3,4-oxadiazole-5-fluorocytosine hybrid derivatives. J Mol Struct 2022; 1272:134135. [PMID: 36101881 PMCID: PMC9459830 DOI: 10.1016/j.molstruc.2022.134135] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 01/18/2023]
Abstract
Analogs of pyrimidine and 1,3,4-oxadiazole are two well established class of molecules proven as potent antiviral and anticancer agents in the pharmaceutical industry. We envisioned designing new molecules where these two heterocycles were conjugated with the goal of enhancing biological activity. In this vein, we synthesized a series of novel pyrimidine-1,3,4-oxadiazole conjugated hybrid molecules as potential anticancer and antiviral agents. Herein, we present a new design for 5-fluorocytosine-1,3,4-oxadiazole hybrids (5a-h) connected via a methylene bridge. An efficient synthesis of new derivatives was established, and all compounds were fully characterized by NMR and MS. Eight compounds were evaluated for their cytotoxic activity against fibrosarcoma (HT-1080), breast (MCF-7 and MDA-MB-231), lung carcinoma (A-549), and for their antiviral activity against SARS-CoV-2. Among all compounds tested, the compound 5e showed marked growth inhibition against all cell lines tested, particularly in HT-1080, with IC50 values of 19.56 µM. Meanwhile, all tested compounds showed no anti-SARS-CoV-2 activity, with EC50 >100 µM. The mechanism of cell death was investigated using Annexin V staining, caspase-3/7 activity, and analysis of cell cycle progression. The compound 5e induced apoptosis by the activation of caspase-3/7 and cell-cycle arrest in HT-1080 and A-549 cells at the G2M phase. The molecular docking suggested that the compound 5e activated caspase-3 via the formation of a stable complex protein-ligand.
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Affiliation(s)
- Az-Eddine El Mansouri
- Laboratory of Biomolecular and Medicinal chemistry, Faculty of Science Semlalia, University Cadi Ayyad, Marrakesh, Morocco
- Laboratoire de Matériaux, Catalyse & Valorisation des Ressources Naturelles, URAC 24, Faculté des Sciences et Techniques, Université Hassan II, Casablanca B.P. 146, 20650, Morocco
| | - Saida Lachhab
- Laboratory of Biomolecular and Medicinal chemistry, Faculty of Science Semlalia, University Cadi Ayyad, Marrakesh, Morocco
| | - Ali Oubella
- Laboratoire de Synthese Organique et de Physico-Chimie Moleculaire, Departement de Chimie, Faculte´ des Sciences, Semlalia BP 2390, Marrakech 40001, Morocco
| | - Mehdi Ahmad
- ICGM, Univ. Montpellier, CNRS, ENSCM, Montpellier, France
| | - Johan Neyts
- Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Dirk Jochmans
- Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Winston Chiu
- Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Laura Vangeel
- Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | | | - Hamid Morjani
- BioSpecT - EA7506 UFR de Pharmacie, Univ-Reims 51, rue Cognacq Jay 51096 Reims cedex, France
| | - Mustapha Ait Ali
- Laboratory of Biomolecular and Medicinal chemistry, Faculty of Science Semlalia, University Cadi Ayyad, Marrakesh, Morocco
| | - Mohamed Zahouily
- Laboratoire de Matériaux, Catalyse & Valorisation des Ressources Naturelles, URAC 24, Faculté des Sciences et Techniques, Université Hassan II, Casablanca B.P. 146, 20650, Morocco
| | - Yogesh S Sanghvi
- Rasayan Inc. 2802 Crystal Ridge Road, Encinitas, CA 92024-6615, U.S.A
| | - Hassan B Lazrek
- Laboratory of Biomolecular and Medicinal chemistry, Faculty of Science Semlalia, University Cadi Ayyad, Marrakesh, Morocco
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12
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Vanmechelen B, Stroobants J, Chiu W, Naesens L, Schepers J, Vermeire K, Maes P. Development and optimization of biologically contained Marburg virus for high-throughput antiviral screening. Antiviral Res 2022; 207:105426. [DOI: 10.1016/j.antiviral.2022.105426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/17/2022] [Accepted: 09/24/2022] [Indexed: 11/27/2022]
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13
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Chiu W. CEC05-02 Rodent models for studies of genetic diversity and case studies of their use in toxicology. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Zaliani A, Vangeel L, Reinshagen J, Iaconis D, Kuzikov M, Keminer O, Wolf M, Ellinger B, Esposito F, Corona A, Tramontano E, Manelfi C, Herzog K, Jochmans D, De Jonghe S, Chiu W, Francken T, Schepers J, Collard C, Abbasi K, Claussen C, Summa V, Beccari AR, Neyts J, Gribbon P, Leyssen P. Cytopathic SARS-CoV-2 screening on VERO-E6 cells in a large-scale repurposing effort. Sci Data 2022; 9:405. [PMID: 35831315 PMCID: PMC9279437 DOI: 10.1038/s41597-022-01532-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 06/29/2022] [Indexed: 01/13/2023] Open
Abstract
Worldwide, there are intensive efforts to identify repurposed drugs as potential therapies against SARS-CoV-2 infection and the associated COVID-19 disease. To date, the anti-inflammatory drug dexamethasone and (to a lesser extent) the RNA-polymerase inhibitor remdesivir have been shown to be effective in reducing mortality and patient time to recovery, respectively, in patients. Here, we report the results of a phenotypic screening campaign within an EU-funded project (H2020-EXSCALATE4COV) aimed at extending the repertoire of anti-COVID therapeutics through repurposing of available compounds and highlighting compounds with new mechanisms of action against viral infection. We screened 8702 molecules from different repurposing libraries, to reveal 110 compounds with an anti-cytopathic IC50 < 20 µM. From this group, 18 with a safety index greater than 2 are also marketed drugs, making them suitable for further study as potential therapies against COVID-19. Our result supports the idea that a systematic approach to repurposing is a valid strategy to accelerate the necessary drug discovery process. Measurement(s) | Cytopathic Effect | Technology Type(s) | confocal fluorescence microscopy | Factor Type(s) | Cellular toxicity | Sample Characteristic - Organism | Chlorocebus sabaeus | Sample Characteristic - Environment | continuant | Sample Characteristic - Location | Belgium |
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Affiliation(s)
- Andrea Zaliani
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany. .,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany.
| | - Laura Vangeel
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Jeanette Reinshagen
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Daniela Iaconis
- Dompé Farmaceutici SpA, via Campo di Pile, 67100, L'Aquila, Italy
| | - Maria Kuzikov
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Oliver Keminer
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Markus Wolf
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Bernhard Ellinger
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Francesca Esposito
- Dipartimento di Scienze della vita e dell'ambiente, Cittadella Universitaria di Monserrato, SS554, 09042, Monserrato, Cagliari, Italy
| | - Angela Corona
- Dipartimento di Scienze della vita e dell'ambiente, Cittadella Universitaria di Monserrato, SS554, 09042, Monserrato, Cagliari, Italy
| | - Enzo Tramontano
- Dipartimento di Scienze della vita e dell'ambiente, Cittadella Universitaria di Monserrato, SS554, 09042, Monserrato, Cagliari, Italy
| | - Candida Manelfi
- Dompé Farmaceutici SpA, via Campo di Pile, 67100, L'Aquila, Italy
| | - Katja Herzog
- EU-OPENSCREEN ERIC, Campus Berlin Buch, Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Dirk Jochmans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Thibault Francken
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Joost Schepers
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Caroline Collard
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Kayvan Abbasi
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Carsten Claussen
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Vincenzo Summa
- Department of Excellence of Pharmacy, University of Naples Federico II, Via D. Montesano, 49, 80131, Naples, Italy
| | - Andrea R Beccari
- Dompé Farmaceutici SpA, via Campo di Pile, 67100, L'Aquila, Italy
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
| | - Philip Gribbon
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research ScreeningPort, Schnackenburgallee 114, 22525, Hamburg, Germany.,Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Theodor-Stern-Kai 7, 60596, Frankfurt am Main, Germany
| | - Pieter Leyssen
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Herestraat 49 - box 1043, 3000, Leuven, Belgium
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15
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Chiu W, Verschueren L, Van den Eynde C, Buyck C, De Meyer S, Jochmans D, Bojkova D, Ciesek S, Cinatl J, De Jonghe S, Leyssen P, Neyts J, Van Loock M, Van Damme E. Development and optimization of a high-throughput screening assay for in vitro anti-SARS-CoV-2 activity: Evaluation of 5676 Phase 1 Passed Structures. J Med Virol 2022; 94:3101-3111. [PMID: 35229317 PMCID: PMC9088669 DOI: 10.1002/jmv.27683] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 01/09/2023]
Abstract
Although vaccines are currently used to control the coronavirus disease 2019 (COVID-19) pandemic, treatment options are urgently needed for those who cannot be vaccinated and for future outbreaks involving new severe acute respiratory syndrome coronavirus virus 2 (SARS-CoV-2) strains or coronaviruses not covered by current vaccines. Thus far, few existing antivirals are known to be effective against SARS-CoV-2 and clinically successful against COVID-19. As part of an immediate response to the COVID-19 pandemic, a high-throughput, high content imaging-based SARS-CoV-2 infection assay was developed in VeroE6 African green monkey kidney epithelial cells expressing a stable enhanced green fluorescent protein (VeroE6-eGFP cells) and was used to screen a library of 5676 compounds that passed Phase 1 clinical trials. Eight drugs (nelfinavir, RG-12915, itraconazole, chloroquine, hydroxychloroquine, sematilide, remdesivir, and doxorubicin) were identified as inhibitors of in vitro anti-SARS-CoV-2 activity in VeroE6-eGFP and/or Caco-2 cell lines. However, apart from remdesivir, toxicity and pharmacokinetic data did not support further clinical development of these compounds for COVID-19 treatment.
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Affiliation(s)
- Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and TransplantationRega Institute, Laboratory of Virology and ChemotherapyLeuvenBelgium
| | | | | | | | | | - Dirk Jochmans
- KU Leuven, Department of Microbiology, Immunology and TransplantationRega Institute, Laboratory of Virology and ChemotherapyLeuvenBelgium
| | - Denisa Bojkova
- Institute of Medical VirologyUniversity Hospital Frankfurt, Goethe UniversityFrankfurt am MainGermany
| | - Sandra Ciesek
- Institute of Medical VirologyUniversity Hospital Frankfurt, Goethe UniversityFrankfurt am MainGermany
| | - Jindrich Cinatl
- Institute of Medical VirologyUniversity Hospital Frankfurt, Goethe UniversityFrankfurt am MainGermany
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and TransplantationRega Institute, Laboratory of Virology and ChemotherapyLeuvenBelgium
| | - Pieter Leyssen
- KU Leuven, Department of Microbiology, Immunology and TransplantationRega Institute, Laboratory of Virology and ChemotherapyLeuvenBelgium
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and TransplantationRega Institute, Laboratory of Virology and ChemotherapyLeuvenBelgium
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16
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Vanmechelen B, Stroobants J, Chiu W, Schepers J, Marchand A, Chaltin P, Vermeire K, Maes P. Identification of novel Ebola virus inhibitors using biologically contained virus. Antiviral Res 2022; 200:105294. [PMID: 35337896 DOI: 10.1016/j.antiviral.2022.105294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/09/2022] [Accepted: 03/20/2022] [Indexed: 12/13/2022]
Abstract
Despite recent advancements in the development of vaccines and monoclonal antibody therapies for Ebola virus disease, treatment options remain limited. Moreover, management and containment of Ebola virus outbreaks is often hindered by the remote nature of the locations in which the outbreaks originate. Small-molecule compounds offer the advantage of being relatively cheap and easy to produce, transport and store, making them an interesting modality for the development of novel therapeutics against Ebola virus disease. Furthermore, the repurposing of small-molecule compounds, previously developed for alternative applications, can aid in reducing the time needed to bring potential therapeutics from bench to bedside. For this purpose, the Medicines for Malaria Venture provides collections of previously developed small-molecule compounds for screening against other infectious diseases. In this study, we used biologically contained Ebola virus to screen over 4,200 small-molecule drugs and drug-like compounds provided by the Medicines for Malaria Venture (i.e., the Pandemic Response Box and the COVID Box) and the Centre for Drug Design and Discovery (CD3, KU Leuven, Belgium). In addition to confirming known Ebola virus inhibitors, illustrating the validity of our screening assays, we identified eight novel selective Ebola virus inhibitors. Although the inhibitory potential of these compounds remains to be validated in vivo, they represent interesting compounds for the study of potential interventions against Ebola virus disease and might serve as a basis for the development of new therapeutics.
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Affiliation(s)
- Bert Vanmechelen
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium
| | - Joren Stroobants
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Joost Schepers
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Arnaud Marchand
- CISTIM Leuven vzw, Gaston Geenslaan 2, 3000, Leuven, Belgium
| | - Patrick Chaltin
- CISTIM Leuven vzw, Gaston Geenslaan 2, 3000, Leuven, Belgium; Centre for Drug Design and Discovery (CD3), KU Leuven, Gaston Geenslaan 2, 3000, Leuven, Belgium
| | - Kurt Vermeire
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Piet Maes
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium.
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17
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Vangeel L, Chiu W, De Jonghe S, Maes P, Slechten B, Raymenants J, André E, Leyssen P, Neyts J, Jochmans D. Remdesivir, Molnupiravir and Nirmatrelvir remain active against SARS-CoV-2 Omicron and other variants of concern. Antiviral Res 2022; 198:105252. [PMID: 35085683 PMCID: PMC8785409 DOI: 10.1016/j.antiviral.2022.105252] [Citation(s) in RCA: 244] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 01/11/2022] [Accepted: 01/18/2022] [Indexed: 11/24/2022]
Abstract
We assessed the in vitro antiviral activity of remdesivir and its parent nucleoside GS-441524, molnupiravir and its parent nucleoside EIDD-1931 and the viral protease inhibitor nirmatrelvir against the ancestral SARS-CoV2 strain and the five variants of concern including Omicron. VeroE6-GFP cells were pre-treated overnight with serial dilutions of the compounds before infection. The GFP signal was determined by high-content imaging on day 4 post-infection. All molecules have equipotent antiviral activity against the ancestral virus and the VOCs Alpha, Beta, Gamma, Delta and Omicron. These findings are in line with the observation that the target proteins of these antivirals (respectively the viral RNA dependent RNA polymerase and the viral main protease Mpro) are highly conserved. The omicron SARS-CoV-2 variant remains susceptible for GS-441524, Remdesivir, EIDD-1931, Molnupiravir and Nirmatrelvir. The target genes of these antivirals are highly conserved between SARS-CoV-2 variants. Similarly, the alpha, beta, gamma and delta variants remain susceptible to these antivirals.
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Affiliation(s)
- Laura Vangeel
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Winston Chiu
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Steven De Jonghe
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Piet Maes
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical and Epidemiological Virology, Leuven, Belgium
| | - Bram Slechten
- University Hospitals Leuven, Department of Laboratory Medicine, Leuven, Belgium
| | - Joren Raymenants
- University Hospitals Leuven, Department of Laboratory Medicine, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical Bacteriology and Mycology, Leuven, Belgium
| | - Emmanuel André
- University Hospitals Leuven, Department of Laboratory Medicine, Leuven, Belgium; KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Clinical Bacteriology and Mycology, Leuven, Belgium
| | - Pieter Leyssen
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Johan Neyts
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium.
| | - Dirk Jochmans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium.
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18
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Ter Horst S, Chiu W, Neyts J, Rocha-Pereira J. Screening and in vitro antiviral assessment of small molecules against fluorescent protein-expressing Bunyamwera virus in a cell-based assay using high-content imaging. Antivir Chem Chemother 2021; 29:20402066211033478. [PMID: 34378414 PMCID: PMC8361537 DOI: 10.1177/20402066211033478] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Many species of the order Bunyavirales contain potentially fatal viruses that lack effective medical countermeasures and are therefore collectively a major public health threat. Here, we describe a cell-based assay using Bunyamwera virus (BUNV)-mCherry to identify and characterize new antiviral molecules against bunyaviruses. BUNV is the type species for the genus Orthobunyavirus and has been reported to cause mild symptoms in humans, such as fever, joint pain, and rash. One major benefit of using our fluorescence-based assay over classical CPE-based assays is the fact that the antiviral effect of the tested compounds and their effect on the cell viability can be determined within the same assay well. For that reason, this type of assay could significantly advance our preclinical efforts towards finding new antiviral molecules against bunyaviruses.
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Affiliation(s)
- Sebastiaan Ter Horst
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven - University of Leuven, Leuven, Belgium
| | - Winston Chiu
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven - University of Leuven, Leuven, Belgium
| | - Johan Neyts
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven - University of Leuven, Leuven, Belgium
| | - Joana Rocha-Pereira
- Department of Microbiology and Immunology, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, KU Leuven - University of Leuven, Leuven, Belgium
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19
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Liesenborghs L, Spriet I, Jochmans D, Belmans A, Gyselinck I, Teuwen LA, ter Horst S, Dreesen E, Geukens T, Engelen MM, Landeloos E, Geldhof V, Ceunen H, Debaveye B, Vandenberk B, Van der Linden L, Jacobs S, Langendries L, Boudewijns R, Dan Do TN, Chiu W, Wang X, Zhang X, Weynand B, Vanassche T, Devos T, Meyfroidt G, Janssens W, Vos R, Vermeersch P, Wauters J, Verbeke G, De Munter P, Kaptein SJ, Rocha-Pereira J, Delang L, Van Wijngaerden E, Neyts J, Verhamme P. Corrigendum to "itraconazole for COVID-19: Preclinical studies and a proof-of-concept randomized clinical trial Laurens". EBioMedicine 2021; 69:103454. [PMID: 34186486 PMCID: PMC8233477 DOI: 10.1016/j.ebiom.2021.103454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Laurens Liesenborghs
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- The Outbreak Research Team, Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Corresponding author at: Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.
| | - Isabel Spriet
- Pharmacy Department University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Dirk Jochmans
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Ann Belmans
- KU Leuven University of Leuven & Universiteit Hasselt, I-BioStat, Leuven, Belgium
| | - Iwein Gyselinck
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Laure-Anne Teuwen
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Department of Oncology, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Sebastiaan ter Horst
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Erwin Dreesen
- Clinical Pharmacology and Pharmacotherapy Unit, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Tatjana Geukens
- Department of Oncology, Laboratory for Translational Breast Cancer Research, KU Leuven, Belgium
| | | | - Ewout Landeloos
- Department of Oncology, Laboratory for molecular Cancer biology, VIB-KU Leuven, Belgium
| | - Vincent Geldhof
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Department of Oncology, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Helga Ceunen
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Barbara Debaveye
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Bert Vandenberk
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Lorenz Van der Linden
- Pharmacy Department University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Sofie Jacobs
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Lana Langendries
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Robbert Boudewijns
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Thuc Nguyen Dan Do
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Winston Chiu
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Xinyu Wang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Xin Zhang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Birgit Weynand
- Translational Cell and Tissue Research, Department of Imaging and Pathology, KU Leuven, Belgium
| | - Thomas Vanassche
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Timothy Devos
- Department of Hematology, UZ Leuven and Department of Microbiology, Immunology and Transplantation, Laboratory of Molecular Immunology (Rega Institute), KU Leuven, Belgium
| | - Geert Meyfroidt
- Department and Laboratory of Intensive Care Medicine, UZ and KU Leuven, Belgium
| | - Wim Janssens
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Robin Vos
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Pieter Vermeersch
- Department of Cardiovascular Sciences and Clinical Department of Laboratory Medicine, KU Leuven, Belgium
| | - Joost Wauters
- Medical Intensive Care Unit, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Geert Verbeke
- KU Leuven University of Leuven & Universiteit Hasselt, I-BioStat, Leuven, Belgium
| | - Paul De Munter
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Suzanne J.F. Kaptein
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Joana Rocha-Pereira
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Leen Delang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Eric Van Wijngaerden
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
- Corresponding author at: Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium.
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Peter Verhamme
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
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20
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Liesenborghs L, Spriet I, Jochmans D, Belmans A, Gyselinck I, Teuwen LA, ter Horst S, Dreesen E, Geukens T, Engelen MM, Landeloos E, Geldhof V, Ceunen H, Debaveye B, Vandenberk B, Van der Linden L, Jacobs S, Langendries L, Boudewijns R, Do TND, Chiu W, Wang X, Zhang X, Weynand B, Vanassche T, Devos T, Meyfroidt G, Janssens W, Vos R, Vermeersch P, Wauters J, Verbeke G, De Munter P, Kaptein SJ, Rocha-Pereira J, Delang L, Van Wijngaerden E, Neyts J, Verhamme P. Itraconazole for COVID-19: preclinical studies and a proof-of-concept randomized clinical trial. EBioMedicine 2021; 66:103288. [PMID: 33752127 PMCID: PMC7979145 DOI: 10.1016/j.ebiom.2021.103288] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/03/2021] [Accepted: 03/03/2021] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND The antifungal drug itraconazole exerts in vitro activity against SARS-CoV-2 in Vero and human Caco-2 cells. Preclinical and clinical studies are required to investigate if itraconazole is effective for the treatment and/or prevention of COVID-19. METHODS Due to the initial absence of preclinical models, the effect of itraconazole was explored in a clinical, proof-of-concept, open-label, single-center study, in which hospitalized COVID-19 patients were randomly assigned to standard of care with or without itraconazole. Primary outcome was the cumulative score of the clinical status until day 15 based on the 7-point ordinal scale of the World Health Organization. In parallel, itraconazole was evaluated in a newly established hamster model of acute SARS-CoV-2 infection and transmission, as soon as the model was validated. FINDINGS In the hamster acute infection model, itraconazole did not reduce viral load in lungs, stools or ileum, despite adequate plasma and lung drug concentrations. In the transmission model, itraconazole failed to prevent viral transmission. The clinical trial was prematurely discontinued after evaluation of the preclinical studies and because an interim analysis showed no signal for a more favorable outcome with itraconazole: mean cumulative score of the clinical status 49 vs 47, ratio of geometric means 1.01 (95% CI 0.85 to 1.19) for itraconazole vs standard of care. INTERPRETATION Despite in vitro activity, itraconazole was not effective in a preclinical COVID-19 hamster model. This prompted the premature termination of the proof-of-concept clinical study. FUNDING KU Leuven, Research Foundation - Flanders (FWO), Horizon 2020, Bill and Melinda Gates Foundation.
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Affiliation(s)
- Laurens Liesenborghs
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- The Outbreak Research Team, Department of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Isabel Spriet
- Pharmacy Department University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Dirk Jochmans
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Ann Belmans
- KU Leuven – University of Leuven & Universiteit Hasselt, I-BioStat, Leuven, Belgium
| | - Iwein Gyselinck
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Laure-Anne Teuwen
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Department of Oncology, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Sebastiaan ter Horst
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Erwin Dreesen
- Clinical Pharmacology and Pharmacotherapy Unit, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Tatjana Geukens
- Department of Oncology, Laboratory for Translational Breast Cancer Research, KU Leuven, Belgium
| | | | - Ewout Landeloos
- Department of Oncology, Laboratory for molecular Cancer biology, VIB-KU Leuven, Belgium
| | - Vincent Geldhof
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, VIB, Department of Oncology, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Helga Ceunen
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Barbara Debaveye
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Bert Vandenberk
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Lorenz Van der Linden
- Pharmacy Department University Hospitals Leuven and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Belgium
| | - Sofie Jacobs
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Lana Langendries
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Robbert Boudewijns
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Thuc Nguyen Dan Do
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Winston Chiu
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Xinyu Wang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Xin Zhang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Birgit Weynand
- Translational Cell and Tissue Research, Department of Imaging and Pathology, KU Leuven, Belgium
| | - Thomas Vanassche
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
| | - Timothy Devos
- Department of Hematology, UZ Leuven and Department of Microbiology, Immunology and Transplantation, Laboratory of Molecular Immunology (Rega Institute), KU Leuven, Belgium
| | - Geert Meyfroidt
- Department and Laboratory of Intensive Care Medicine, UZ and KU Leuven, Belgium
| | - Wim Janssens
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Robin Vos
- Department of Respiratory Diseases, UZ Leuven and CHROMETA, Research group BREATHE, KU Leuven, Leuven, Belgium
| | - Pieter Vermeersch
- Department of Cardiovascular Sciences and Clinical Department of Laboratory Medicine, KU Leuven, Belgium
| | - Joost Wauters
- Medical Intensive Care Unit, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Geert Verbeke
- KU Leuven – University of Leuven & Universiteit Hasselt, I-BioStat, Leuven, Belgium
| | - Paul De Munter
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Suzanne J.F. Kaptein
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Joana Rocha-Pereira
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Leen Delang
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Eric Van Wijngaerden
- Department of General Internal Medicine, UZ Leuven and Department of Microbiology, Immunology and Transplantation, KU Leuven, Belgium
| | - Johan Neyts
- Laboratory of Virology and Chemotherapy, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Peter Verhamme
- Department of Cardiovascular Sciences, UZ and KU Leuven, Belgium
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21
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Laporte M, Stevaert A, Raeymaekers V, Boogaerts T, Nehlmeier I, Chiu W, Benkheil M, Vanaudenaerde B, Pöhlmann S, Naesens L. Hemagglutinin Cleavability, Acid Stability, and Temperature Dependence Optimize Influenza B Virus for Replication in Human Airways. J Virol 2019; 94:e01430-19. [PMID: 31597759 PMCID: PMC6912116 DOI: 10.1128/jvi.01430-19] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/28/2019] [Indexed: 12/15/2022] Open
Abstract
Influenza A virus (IAV) and influenza B virus (IBV) cause yearly epidemics with significant morbidity and mortality. When zoonotic IAVs enter the human population, the viral hemagglutinin (HA) requires adaptation to achieve sustained virus transmission. In contrast, IBV has been circulating in humans, its only host, for a long period of time. Whether this entailed adaptation of IBV HA to the human airways is unknown. To address this question, we compared two seasonal IAVs (A/H1N1 and A/H3N2) and two IBVs (B/Victoria and B/Yamagata lineages) with regard to host-dependent activity of HA as the mediator of membrane fusion during viral entry. We first investigated proteolytic activation of HA by covering all type II transmembrane serine protease (TTSP) and kallikrein enzymes, many of which proved to be present in human respiratory epithelium. The IBV HA0 precursor is cleaved by a broader panel of TTSPs and activated with much higher efficiency than IAV HA0. Accordingly, knockdown of a single protease, TMPRSS2, abrogated spread of IAV but not IBV in human respiratory epithelial cells. Second, the HA fusion pH values proved similar for IBV and human-adapted IAVs (with one exception being the HA of 1918 IAV). Third, IBV HA exhibited higher expression at 33°C, a temperature required for membrane fusion by B/Victoria HA. This indicates pronounced adaptation of IBV HA to the mildly acidic pH and cooler temperature of human upper airways. These distinct and intrinsic features of IBV HA are compatible with extensive host adaptation during prolonged circulation of this respiratory virus in the human population.IMPORTANCE Influenza epidemics are caused by influenza A and influenza B viruses (IAV and IBV, respectively). IBV causes substantial disease; however, it is far less studied than IAV. While IAV originates from animal reservoirs, IBV circulates in humans only. Virus spread requires that the viral hemagglutinin (HA) is active and sufficiently stable in human airways. We resolve here how these mechanisms differ between IBV and IAV. Whereas human IAVs rely on one particular protease for HA activation, this is not the case for IBV. Superior activation of IBV by several proteases should enhance shedding of infectious particles. IBV HA exhibits acid stability and a preference for 33°C, indicating pronounced adaptation to the human upper airways, where the pH is mildly acidic and a cooler temperature exists. These adaptive features are rationalized by the long existence of IBV in humans and may have broader relevance for understanding the biology and evolution of respiratory viruses.
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MESH Headings
- Cell Line
- Epithelial Cells/pathology
- Epithelial Cells/virology
- Gene Expression Regulation
- Hemagglutinin Glycoproteins, Influenza Virus/chemistry
- Hemagglutinin Glycoproteins, Influenza Virus/genetics
- Hemagglutinin Glycoproteins, Influenza Virus/metabolism
- Host-Pathogen Interactions/genetics
- Humans
- Hydrogen-Ion Concentration
- Influenza A Virus, H1N1 Subtype/genetics
- Influenza A Virus, H1N1 Subtype/metabolism
- Influenza A Virus, H1N1 Subtype/pathogenicity
- Influenza A Virus, H3N2 Subtype/genetics
- Influenza A Virus, H3N2 Subtype/metabolism
- Influenza A Virus, H3N2 Subtype/pathogenicity
- Influenza B virus/genetics
- Influenza B virus/metabolism
- Influenza B virus/pathogenicity
- Influenza, Human/pathology
- Influenza, Human/virology
- Kallikreins/classification
- Kallikreins/genetics
- Kallikreins/metabolism
- Lung/pathology
- Lung/virology
- Membrane Fusion
- Membrane Proteins/classification
- Membrane Proteins/genetics
- Membrane Proteins/metabolism
- Proteolysis
- Respiratory Mucosa/pathology
- Respiratory Mucosa/virology
- Serine Endopeptidases/deficiency
- Serine Endopeptidases/genetics
- Serine Proteases/classification
- Serine Proteases/genetics
- Serine Proteases/metabolism
- Species Specificity
- Temperature
- Virus Internalization
- Virus Replication/genetics
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Affiliation(s)
- Manon Laporte
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Annelies Stevaert
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Valerie Raeymaekers
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Talitha Boogaerts
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Inga Nehlmeier
- Infection Biology Unit, German Primate Center-Leibniz Institute for Primate Research, Göttingen, Germany
| | - Winston Chiu
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Mohammed Benkheil
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Bart Vanaudenaerde
- Katholieke Universiteit Leuven, Department of Chronic Diseases, Metabolism and Ageing, Laboratory of Pneumology, University Hospital Leuven, Leuven, Belgium
| | - Stefan Pöhlmann
- Infection Biology Unit, German Primate Center-Leibniz Institute for Primate Research, Göttingen, Germany
- Faculty of Biology and Psychology, University Göttingen, Göttingen, Germany
| | - Lieve Naesens
- Katholieke Universiteit Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, Leuven, Belgium
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Bera G, Camargo K, Sericano J, Liu Y, Sweet S, Horney J, Jun M, Chiu W, Rusyn I, Wade T, Knap A. Baseline data for distribution of contaminants by natural disasters: results from a residential Houston neighborhood during Hurricane Harvey flooding. Heliyon 2019; 5:e02860. [PMID: 31763489 PMCID: PMC6861583 DOI: 10.1016/j.heliyon.2019.e02860] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/05/2019] [Accepted: 11/13/2019] [Indexed: 11/24/2022] Open
Abstract
Hurricane Harvey made landfall in Texas August 25, 2017, bringing massive rains and flooding that impacted soils in a residential neighborhood in East Houston. Trace elements, organochlorine pesticides, polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ether fire retardants (PBDEs) and polychlorinated biphenyls (PCBs) were determined in 24 soil samples. The highest concentrations found in soils were total PAHs, which ranged from 1,310 μg/kg to 85,700 μg/kg with a mean of 12,600 μg/kg. Analysis of specific PAH ratios indicate the source of the PAHs were dominated by pyrogenic rather than petrogenic sources. Chlordanes were detectable in the area where the likely local source is for ant control. The trace metal concentrations were below any environmental health concern concentrations but As, Cd, Hg, Pb, Se, Ag, Zn were enriched over the crustal abundance. While Hurricane Harvey was responsible for the redistribution of many contaminants, the large volume of rain and floodwater likely transported contaminants from the land areas and into the Houston Ship Channel and Galveston Bay. The findings from this study will serve as baseline data for determining the mobilization of contaminants caused by natural disasters.
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Affiliation(s)
- G. Bera
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
| | - K. Camargo
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77840, USA
| | - J.L. Sericano
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
| | - Y. Liu
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
| | - S.T. Sweet
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
| | - J. Horney
- School of Public Health, Texas A&M University, College Station, Texas 77840, USA
| | - M. Jun
- Department of Statistics, Texas A&M University, College Station, Texas 77840, USA
| | - W. Chiu
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77840, USA
| | - I. Rusyn
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas 77840, USA
| | - T.L. Wade
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
| | - A.H. Knap
- Geochemical and Environmental Research Group, Texas A&M University, College Station, Texas 77840, USA
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Johansson E, Kaan A, Chiu W, Cannon C, Young Q, Brownjohn K. Using Adherence Agreements in Heart Transplant Candidates: What's Important? J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Maze MJ, Paynter J, Chiu W, Hu R, Nisbet M, Lewis C. Therapeutic drug monitoring of isoniazid and rifampicin during anti-tuberculosis treatment in Auckland, New Zealand. Int J Tuberc Lung Dis 2018; 20:955-60. [PMID: 27287650 DOI: 10.5588/ijtld.15.0792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
SETTING There is uncertainty as to the optimal therapeutic concentrations of anti-tuberculosis drugs to achieve cure. OBJECTIVE To characterise the use of therapeutic drug monitoring (TDM), and identify risk factors and outcomes for those with concentrations below the drug interval. DESIGN Patients treated for tuberculosis (TB) who had rifampicin (RMP) or isoniazid (INH) concentrations measured between 1 January 2005 and 31 December 2012 were studied retrospectively. Matched concentrations and drug dosing time were assessed according to contemporary regional drug intervals (RMP > 6 μmol/l, INH > 7.5 μmol/l) and current international recommendations (RMP > 10 μmol/l, INH > 22 μmol/l). Outcomes were assessed using World Health Organization criteria. RESULTS Of 865 patients, 121 had concentrations of either or both medications. RMP concentrations were within the regional drug intervals in 106/114 (93%) and INH in 91/100 (91%). Concentrations were within international drug intervals for RMP in 76/114 (67%) and INH in 53/100 (53%). Low weight-based dose was the only statistically significant risk factor for concentrations below the drug interval. Of the 35 patients with low concentrations, 21 were cured, 9 completed treatment and 5 transferred out. There were no relapses during follow-up (mean 66.5 months). CONCLUSION There were no clinically useful characteristics to guide use of TDM. Many patients had concentrations below international therapeutic intervals, but were successfully treated.
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Affiliation(s)
- M J Maze
- Department of Respiratory Medicine, Auckland District Health Board, Auckland, New Zealand; Centre for International Health, University of Otago, Dunedin, New Zealand
| | - J Paynter
- Department of Respiratory Medicine, Auckland District Health Board, Auckland, New Zealand
| | - W Chiu
- Department of Chemical Pathology, LabPlus Laboratories, Auckland, New Zealand
| | - R Hu
- Research Office, Auckland District Health Board, Auckland, New Zealand
| | - M Nisbet
- Department of Respiratory Medicine, Auckland District Health Board, Auckland, New Zealand; Department of Infectious Diseases, Auckland District Health Board, Auckland, New Zealand
| | - C Lewis
- Department of Respiratory Medicine, Auckland District Health Board, Auckland, New Zealand
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Johansson E, Kaan A, Chiu W, Cannon C, Young Q, Brownjohn K. LET'S AGREE TO AGREE: EVALUATION OF ADHERENCE AGREEMENTS IN PATIENTS BEING CONSIDERED FOR HEART TRANSPLANTATION. Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Maze MJ, Paynter J, Chiu W, Hu R, Nisbet M, Lewis C. In reply 2. Int J Tuberc Lung Dis 2016; 20:1696-1697. [PMID: 27931349 DOI: 10.5588/ijtld.16.0550-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- M J Maze
- Department of Respiratory Medicine, Auckland District Health Board, Auckland, Centre for International Health, University of Otago, Dunedin
| | - J Paynter
- Department of Respiratory Medicine, Auckland District Health Board, Auckland
| | - W Chiu
- Department of Chemical Pathology, LabPlus Laboratories, Auckland
| | - R Hu
- Research Office, Auckland District Health Board
| | - M Nisbet
- Department of Respiratory Medicine, Auckland District Health Board, Auckland
| | - C Lewis
- Department of Respiratory Medicine, Auckland District Health Board, Auckland
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Yang Z, Zhang Q, Chiu W, Cowling B, Lau E. Empirical estimation of the incubation period for hand-foot-and-mouth disease from school outbreaks. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.11.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Abstract
Electron cryo-microscopy (cryoEM) has advanced dramatically to become a viable tool for high-resolution structural biology research. The ultimate outcome of a cryoEM study is an atomic model of a macromolecule or its complex with interacting partners. This chapter describes a variety of algorithms and software to build a de novo model based on the cryoEM 3D density map, to optimize the model with the best stereochemistry restraints and finally to validate the model with proper protocols. The full process of atomic structure determination from a cryoEM map is described. The tools outlined in this chapter should prove extremely valuable in revealing atomic interactions guided by cryoEM data.
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Affiliation(s)
- F DiMaio
- University of Washington, Seattle, WA, United States; Institute for Protein Design, University of Washington, Seattle, WA, United States.
| | - W Chiu
- National Center for Macromolecular Imaging, Baylor College of Medicine, Houston, TX, United States.
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Kaan A, Johansson E, Chiu W, Young Q, Cannon C, Prytula S, Cheung A, Toma M. Non-Adherence to Medical Advice Does Not Impact Survival in a Bridge to Transplant (BTT) Left Ventricular Assist Device (LVAD) Program. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Chiu W. Deriving generic distributions from historical data for interspecies, intraspecies, and subchronic–chronic extrapolation, and how to deal with other uncertainties. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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duManoir C, Kaan A, Chiu W, Kealy J. INTRA-PROVINCIAL COLLABORATION FOR VAD PATIENT CARE TRANSITIONS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Chiu W, Kaan A, Kealy J, Johansson E. TRANSITION FROM BRIDGE TO TRANSPLANT TO DESTINATION THERAPY FOR VENTRICULAR ASSIST DEVICE PATIENTS. Can J Cardiol 2014. [DOI: 10.1016/j.cjca.2014.07.720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Pai J, Chiu W, Shultz D, Graber M, Columbo L, Wild A, Kumar R, Herman J, Chang D, Koong A. Plasma SPARC Following Stereotactic Body Radiation Therapy (SBRT) Predicts for Progression-Free Survival in Locally-Advanced Pancreatic Cancer. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Johansson E, Kaan A, Broadberry A, Chiu W, Hutchings K, Kealy J. Who's on the Line: Describing the Utilization of the 24 hour VAD Hotline at St. Paul's Hospital. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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35
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Kong C, Chiu W, Davies A, Keating J. Quetiapine may reduce hospital admission rates in patients with mental health problems and alcohol addiction. Case Reports 2013; 2013:bcr-2013-009817. [DOI: 10.1136/bcr-2013-009817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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36
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McGovern S, Rojas M, Gururaj A, Chiu W, Bogler O, Weinstein J. Extracellular Domain Mutations in EGFR Occur Uniquely in Glioblastoma and Favor Ligand-independent Formation of the Active State. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Chiu W, Cowan S, Kealy J. NP014 The Many Faces of Cardiac Sarcoidosis. Can J Cardiol 2012. [DOI: 10.1016/j.cjca.2012.07.829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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38
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Weng T, Chiu W, Liu H, Shen M, Mount D, Chou C. 131 N-linked Glycosylation Regulates the Function and Membrane Localization of KCC4. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70831-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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39
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Ha L, Chiu W, Boswell R, Scott J. Sitosterolaemia: role of different pathology disciplines in its diagnosis and management. Pathology 2012. [DOI: 10.1016/s0031-3025(16)32820-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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40
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Rochat R, Chiu W. 1.16 Cryo-Electron Microscopy and Tomography of Virus Particles. Comprehensive Biophysics 2012. [PMCID: PMC7151817 DOI: 10.1016/b978-0-12-374920-8.00120-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Human infectious disease is classified into five etiologies: bacterial, viral, parasitic, fungal, and prion. Viral infections are unique in that they recruit human cellular machinery to replicate themselves and spread infection. The number of viruses causing human disease is vast, and viruses can be broadly categorized by their structures. Many viruses, such as influenza, appear to be amorphous particles, whereas others, such as herpes simplex virus, rhinovirus, dengue virus, and adenovirus, have roughly symmetric structural components. Icosahedral viruses have been a target of electron microscopists for years, and they were some of the first objects to be reconstructed three-dimensionally from electron micrographs. The ease with which highly purified and conformationally uniform virus samples can be produced makes them an ideal target structural studies. Apart from their biological significance, these virus samples have played a pivotal role in the development of new methodologies in the field of molecular biology as well as in cryo-electron microscopy and cryo-electron tomography.
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Abeysinghe S, Baker ML, Chiu W, Ju T. Semi-isometric registration of line features for flexible fitting of protein structures. Comput Graph Forum 2010; 29:2243-2252. [PMID: 21124809 PMCID: PMC2993115 DOI: 10.1111/j.1467-8659.2010.01813.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this paper, we study a registration problem that is motivated by a practical biology problem - fitting protein structures to low-resolution density maps. We consider registration between two sets of lines features (e.g., helices in the proteins) that have undergone not a single, but multiple isometric transformations (e.g., hinge-motions). The problem is further complicated by the presence of symmetry in each set. We formulate the problem as a clique-finding problem in a product graph, and propose a heuristic solution that includes a fast clique-finding algorithm unique to the structure of this graph. When tested on a suite of real protein structures, the algorithm achieved high accuracy even for very large inputs containing hundreds of helices.
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Irvin W, Carey L, Olajide O, Dees E, Raab R, Corso S, Chiu W, Walko C, Evans J, Weck K, McLeod H, Peppercorn J. Patients' Understanding of a CYP2D6 Tamoxifen Genotyping Study. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-09-6082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Pharmacogenomics is an emerging area for breast cancer research. Little is known about how well patients understand pharmacogenomics or the rationale for research in this area. The objective of this study was to analyze patient understanding of a clinical trial involving CYP2D6 genotyping to guide tamoxifen (T) therapy for breast cancer.Methods: We conducted a survey of understanding of pharmacogenomics and the purposes of a clinical trial among patients (pts) eligible for LCCC0801, a prospective Phase 2 study of CYP2D6 genotype-guided therapy for pts on tamoxifen for breast cancer. In this trial, we evaluated baseline endoxifen (E) levels and the impact of increased T dose to 40 mg/day among pts with any dysfunctional CYP2D6 alleles. The primary endpoint of change in E levels is not yet reported. All trial participants and those who declined participation were eligible for this survey. The research nurse administered 11 written questions at time of consent related to the purpose of this study and the nature of pharmacogenomic research. Pts had unlimited time to complete the survey written in a 5 point scale (strongly agree, agree, not sure, disagree, strongly disagree). For pts declining to enroll in the parent study, we offered an identical companion survey to which they could separately give consent.Results: Of 118 pts in the parent study, 117 completed the survey. Following informed consent, all respondents expressed confidence that they understood the purpose of the trial, 75% strongly agreed that they understood the purpose of the study. 98% of participants understood that this was a study of how different people respond to T, but 42% also incorrectly felt that this was a study of how different types of breast cancer respond to T, and 30% incorrectly felt that this study evaluated genetic risk for developing breast cancer. Though the consent form clearly stated that there may be no direct benefit to participants and that the purpose of the study was to help future pts, 68% reported that they would benefit directly, and only 22% felt the study was designed only to help future pts. When asked if the study involved genetics, 14% of pts disagreed, or were unsure. 45% of participants were uncomfortable or unsure with “having your doctor determine your T dose from the results of a genetic test.” Among a small sample of pts who declined trial participation but consented to the survey (13/30 decliners, 43%), compared to trial participants, fewer reported strong confidence in understanding the purpose of the trial (38% vs. 75%, p=0.0034), and a greater percentage identified an inaccurate purpose of the trial (69% vs. 42%, p = 0.043).Conclusions: After informed consent, a high percentage of participants in a pharmacogenomic clinical trial are able to correctly identify the primary purpose of the research, but a substantial minority hold false views about what the trial is designed to investigate. The majority of participants believe that they will directly benefit from trial participation, and few may understand that the primary purpose of the study is to improve care for future patients. Opportunities exist for improved understanding and communication of pharmacogenomic research and further evaluation of this area is needed.
Citation Information: Cancer Res 2009;69(24 Suppl):Abstract nr 6082.
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Affiliation(s)
- W. Irvin
- 1University of North Carolina, NC,
| | - L. Carey
- 1University of North Carolina, NC,
| | | | - E. Dees
- 1University of North Carolina, NC,
| | - R. Raab
- 3East Carolina University, NC,
| | - S. Corso
- 4Palmetto Hematology/Oncology, SC,
| | - W. Chiu
- 1University of North Carolina, NC,
| | - C. Walko
- 1University of North Carolina, NC,
| | - J. Evans
- 1University of North Carolina, NC,
| | - K. Weck
- 1University of North Carolina, NC,
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Yang C, Jiang W, Chen DH, Adiga U, Ng EG, Chiu W. Estimating contrast transfer function and associated parameters by constrained non-linear optimization. J Microsc 2009; 233:391-403. [PMID: 19250460 DOI: 10.1111/j.1365-2818.2009.03137.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The three-dimensional reconstruction of macromolecules from two-dimensional single-particle electron images requires determination and correction of the contrast transfer function (CTF) and envelope function. A computational algorithm based on constrained non-linear optimization is developed to estimate the essential parameters in the CTF and envelope function model simultaneously and automatically. The application of this estimation method is demonstrated with focal series images of amorphous carbon film as well as images of ice-embedded icosahedral virus particles suspended across holes.
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Affiliation(s)
- C Yang
- Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
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Jiang W, Baker M, Jakata J, Weigele P, King J, Chiu W. Backbone structure of the infectious Epsilon15 virus capsid revealed by electron cryomicroscopy. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308098528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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46
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Shah U, Sanoff HK, O’Neil BH, Stinchcombe TE, Keller K, Carrizosa D, Walko CM, Buie L, Chiu W, Dees EC. A phase I trial of pemetrexed and vinflunine (VFL). J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.13508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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47
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Carson JP, Ju T, Thaller C, Warren J, Bello M, Kakadiaris I, Chiu W, Eichele G. Automated characterization of gene expression patterns with an atlas of the mouse brain. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:2917-20. [PMID: 17270888 DOI: 10.1109/iembs.2004.1403829] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A spatio-temporal map of gene activity in the brain would be an important contribution to the understanding of brain development, disease, and function. Such a resource is now possible using high-throughput in situ hybridization, a method for transcriptome-wide acquisition of cellular resolution gene expression patterns in serial tissue sections. However, querying an enormous quantity of image data requires computational methods for describing and organizing gene expression patterns in a consistent manner. In addressing this, we have developed procedures for automated annotation of gene expression patterns in the postnatal mouse brain.
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Affiliation(s)
- J P Carson
- Graduate Program in Struct. & Comput. Biol. & Molecular Biophys., Nat. Center for Macromolecular Imaging, Houston, TX, USA
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Affiliation(s)
- A Paredes
- National Center for Macromolecular Imaging, Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
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Schmid M, Sherman MB, Matsudaira P, Chiu W. Structure of the acrosomal bundle, a biological machine, at 9.5 Å resolution. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305097138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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50
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Chiu W, Jiang W, Chang J, Jakana J, Weigele P, King J. Electron cryomicroscopy of epsilon 15 phage. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305080931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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