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Song IW, Washington M, Leynes C, Hsu J, Rayavara K, Bae Y, Haelterman N, Chen Y, Jiang MM, Drelich A, Tat V, Lanza DG, Lorenzo I, Heaney JD, Tseng CTK, Lee B, Marom R. Generation of a humanized mAce2 and a conditional hACE2 mouse models permissive to SARS-COV-2 infection. Mamm Genome 2024:10.1007/s00335-024-10033-8. [PMID: 38488938 DOI: 10.1007/s00335-024-10033-8] [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: 09/25/2023] [Accepted: 02/02/2024] [Indexed: 03/17/2024]
Abstract
The Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) remains a public health concern and a subject of active research effort. Development of pre-clinical animal models is critical to study viral-host interaction, tissue tropism, disease mechanisms, therapeutic approaches, and long-term sequelae of infection. Here, we report two mouse models for studying SARS-CoV-2: A knock-in mAce2F83Y,H353K mouse that expresses a mouse-human hybrid form of the angiotensin-converting enzyme 2 (ACE2) receptor under the endogenous mouse Ace2 promoter, and a Rosa26 conditional knock-in mouse carrying the human ACE2 allele (Rosa26hACE2). Although the mAce2F83Y,H353K mice were susceptible to intranasal inoculation with SARS-CoV-2, they did not show gross phenotypic abnormalities. Next, we generated a Rosa26hACE2;CMV-Cre mouse line that ubiquitously expresses the human ACE2 receptor. By day 3 post infection with SARS-CoV-2, Rosa26hACE2;CMV-Cre mice showed significant weight loss, a variable degree of alveolar wall thickening and reduced survival rates. Viral load measurements confirmed inoculation in lung and brain tissues of infected Rosa26hACE2;CMV-Cre mice. The phenotypic spectrum displayed by our different mouse models translates to the broad range of clinical symptoms seen in the human patients and can serve as a resource for the community to model and explore both treatment strategies and long-term consequences of SARS-CoV-2 infection.
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Affiliation(s)
- I-Wen Song
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Megan Washington
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Carolina Leynes
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Jason Hsu
- Department of Biochemistry, Cell and Molecular Biology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Kempaiah Rayavara
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Yangjin Bae
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Nele Haelterman
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Yuqing Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Ming-Ming Jiang
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Aleksandra Drelich
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Vivian Tat
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Denise G Lanza
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Isabel Lorenzo
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Jason D Heaney
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Chien-Te Kent Tseng
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, 77555, USA
| | - Brendan Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA
| | - Ronit Marom
- Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA.
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Xing J, Shankar R, Ko M, Zhang K, Zhang S, Drelich A, Paithankar S, Chekalin E, Chua MS, Rajasekaran S, Kent Tseng CT, Zheng M, Kim S, Chen B. Deciphering COVID-19 host transcriptomic complexity and variations for therapeutic discovery against new variants. iScience 2022; 25:105068. [PMID: 36093376 PMCID: PMC9439871 DOI: 10.1016/j.isci.2022.105068] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/11/2022] [Accepted: 08/30/2022] [Indexed: 12/04/2022] Open
Abstract
The molecular manifestations of host cells responding to SARS-CoV-2 and its evolving variants of infection are vastly different across the studied models and conditions, imposing challenges for host-based antiviral drug discovery. Based on the postulation that antiviral drugs tend to reverse the global host gene expression induced by viral infection, we retrospectively evaluated hundreds of signatures derived from 1,700 published host transcriptomic profiles of SARS/MERS/SARS-CoV-2 infection using an iterative data-driven approach. A few of these signatures could be reversed by known anti-SARS-CoV-2 inhibitors, suggesting the potential of extrapolating the biology for new variant research. We discovered IMD-0354 as a promising candidate to reverse the signatures globally with nanomolar IC50 against SARS-CoV-2 and its five variants. IMD-0354 stimulated type I interferon antiviral response, inhibited viral entry, and down-regulated hijacked proteins. This study demonstrates that the conserved coronavirus signatures and the transcriptomic reversal approach that leverages polypharmacological effects could guide new variant therapeutic discovery.
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Affiliation(s)
- Jing Xing
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
| | - Rama Shankar
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
| | - Meehyun Ko
- Zoonotic Virus Laboratory, Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, 13488, Korea
| | - Keke Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Sulin Zhang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Aleksandra Drelich
- Departments of Microbiology and Immunology, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Shreya Paithankar
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
| | - Eugene Chekalin
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
| | - Mei-Sze Chua
- Department of Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Surender Rajasekaran
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
- Helen DeVos Children’s Hospital, Grand Rapids, MI 49503, USA
| | - Chien-Te Kent Tseng
- Departments of Microbiology and Immunology, The University of Texas Medical Branch, Galveston, TX 77555, USA
- Center of Biodefense and Emerging Infectious Diseases, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Mingyue Zheng
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Seungtaek Kim
- Zoonotic Virus Laboratory, Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, 13488, Korea
| | - Bin Chen
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, MI 49503, USA
- Department of Pharmacology and Toxicology, Michigan State University, Grand Rapids, MI 49503, USA
- Department of Computer Science and Engineering, Michigan State University, East Lansing, MI 48824, USA
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Mudrick HE, Massey S, McGlinch EB, Parrett BJ, Hemsath JR, Barry ME, Rubin JD, Uzendu C, Hansen MJ, Erskine CL, Van Keulen VP, Drelich A, Panos JA, Fida M, Suh GA, Peikert T, Block MS, Tseng CTK, Olivier GR, Barry MA. Comparison of replicating and nonreplicating vaccines against SARS-CoV-2. Sci Adv 2022; 8:eabm8563. [PMID: 36001674 PMCID: PMC9401629 DOI: 10.1126/sciadv.abm8563] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Most gene-based severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines are nonreplicating vectors. They deliver the gene or messenger RNA to the cell to express the spike protein but do not replicate to amplify antigen production. This study tested the utility of replication in a vaccine by comparing replication-defective adenovirus (RD-Ad) and replicating single-cycle adenovirus (SC-Ad) vaccines that express the SARS-CoV-2 spike protein. SC-Ad produced 100 times more spike protein than RD-Ad and generated significantly higher antibodies against the spike protein than RD-Ad after single immunization of Ad-permissive hamsters. SC-Ad-generated antibodies climbed over 14 weeks after single immunization and persisted for more than 10 months. When the hamsters were challenged 10.5 months after single immunization, a single intranasal or intramuscular immunization with SC-Ad-Spike reduced SARS-CoV-2 viral loads and damage in the lungs and preserved body weight better than vaccination with RD-Ad-Spike. This demonstrates the utility of harnessing replication in vaccines to amplify protection against infectious diseases.
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Affiliation(s)
- Haley E. Mudrick
- Molecular Pharmacology and Experimental Therapeutics (MPET) Graduate Program, Mayo Clinic, Rochester, MN, USA
| | - Shane Massey
- Center of Biodefense and Emerging Disease, University of Texas Medical Branch, Galveston, TX, USA
| | - Erin B. McGlinch
- Graduate Research Education Program (GREP), Mayo Clinic, Rochester, MN, USA
- Virology and Gene Therapy (VGT) Graduate Program, Mayo Clinic, Rochester, MN, USA
| | - Brian J. Parrett
- Graduate Research Education Program (GREP), Mayo Clinic, Rochester, MN, USA
- Virology and Gene Therapy (VGT) Graduate Program, Mayo Clinic, Rochester, MN, USA
| | - Jack R. Hemsath
- Graduate Research Education Program (GREP), Mayo Clinic, Rochester, MN, USA
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
| | - Mary E. Barry
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
| | - Jeffrey D. Rubin
- Virology and Gene Therapy (VGT) Graduate Program, Mayo Clinic, Rochester, MN, USA
| | - Chisom Uzendu
- Virology and Gene Therapy (VGT) Graduate Program, Mayo Clinic, Rochester, MN, USA
| | | | | | | | - Aleksandra Drelich
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Joseph A. Panos
- Rehabilitation Medicine Research Center, Musculoskeletal Gene Therapy Research Laboratory, Mayo Clinic Medical Scientist Training Program, Mayo Clinic, Rochester, MN, USA
| | - Madiha Fida
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
| | - Gina A. Suh
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
| | - Tobias Peikert
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
- Department of Medicine, Division of Pulmonary Care, Mayo Clinic, Rochester, MN, USA
| | - Matthew S. Block
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Medical Oncology, Mayo Clinic, Rochester, MN, USA
| | - Chien-Te Kent Tseng
- Center of Biodefense and Emerging Disease, University of Texas Medical Branch, Galveston, TX, USA
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
- Institutional Office of Regulated Nonclinical Studies, University of Texas Medical Branch, Galveston, TX, USA
| | | | - Michael A. Barry
- Department of Medicine, Division of Infectious Diseases, Mayo Clinic, Rochester, MN, USA
- Department of Immunology, Mayo Clinic, Rochester, MN, USA
- Department of Molecular Medicine, Mayo Clinic, Rochester, MN, USA
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4
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Xing J, Shankar R, Drelich A, Paithankar S, Chekalin E, Dexheimer T, Chua MS, Rajasekaran S, Tseng CTK, Chen B. Analysis of Infected Host Gene Expression Reveals Repurposed Drug Candidates and Time-Dependent Host Response Dynamics for COVID-19. bioRxiv 2020:2020.04.07.030734. [PMID: 32511305 PMCID: PMC7217282 DOI: 10.1101/2020.04.07.030734] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The repurposing of existing drugs offers the potential to expedite therapeutic discovery against the current COVID-19 pandemic caused by the SARS-CoV-2 virus. We have developed an integrative approach to predict repurposed drug candidates that can reverse SARS-CoV-2-induced gene expression in host cells, and evaluate their efficacy against SARS-CoV-2 infection in vitro. We found that 13 virus-induced gene expression signatures computed from various viral preclinical models could be reversed by compounds previously identified to be effective against SARS- or MERS-CoV, as well as drug candidates recently reported to be efficacious against SARS-CoV-2. Based on the ability of candidate drugs to reverse these 13 infection signatures, as well as other clinical criteria, we identified 10 novel candidates. The four drugs bortezomib, dactolisib, alvocidib, and methotrexate inhibited SARS-CoV-2 infection-induced cytopathic effect in Vero E6 cells at < 1 µM, but only methotrexate did not exhibit unfavorable cytotoxicity. Although further improvement of cytotoxicity prediction and bench testing is required, our computational approach has the potential to rapidly and rationally identify repurposed drug candidates against SARS-CoV-2. The analysis of signature genes induced by SARS-CoV-2 also revealed interesting time-dependent host response dynamics and critical pathways for therapeutic interventions (e.g. Rho GTPase activation and cytokine signaling suppression).
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Affiliation(s)
- Jing Xing
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Rama Shankar
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Aleksandra Drelich
- Departments of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Shreya Paithankar
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Evgenii Chekalin
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
| | - Thomas Dexheimer
- Department of Pharmacology and Toxicology, Michigan State University, Grand Rapids, Michigan, USA
| | - Mei-Sze Chua
- Department of Surgery, Stanford University School of Medicine, Palo Alto, California, USA
| | - Surender Rajasekaran
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
- Helen Devos Children Hospital, Grand Rapids, Michigan, USA
| | - Chien-Te Kent Tseng
- Departments of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, USA
- Center of Biodefense and Emerging Disease, University of Texas Medical Branch, Galveston, Texas, USA
| | - Bin Chen
- Department of Pediatrics and Human Development, Michigan State University, Grand Rapids, Michigan, USA
- Department of Pharmacology and Toxicology, Michigan State University, Grand Rapids, Michigan, USA
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5
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Nyon MP, Du L, Tseng CTK, Seid CA, Pollet J, Naceanceno KS, Agrawal A, Algaissi A, Peng BH, Tai W, Jiang S, Bottazzi ME, Strych U, Hotez PJ. Engineering a stable CHO cell line for the expression of a MERS-coronavirus vaccine antigen. Vaccine 2018; 36:1853-1862. [PMID: 29496347 PMCID: PMC5860679 DOI: 10.1016/j.vaccine.2018.02.065] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 10/12/2017] [Revised: 02/12/2018] [Accepted: 02/16/2018] [Indexed: 12/21/2022]
Abstract
Middle East respiratory syndrome coronavirus (MERS-CoV) has infected at least 2040 patients and caused 712 deaths since its first appearance in 2012, yet neither pathogen-specific therapeutics nor approved vaccines are available. To address this need, we are developing a subunit recombinant protein vaccine comprising residues 377–588 of the MERS-CoV spike protein receptor-binding domain (RBD), which, when formulated with the AddaVax adjuvant, it induces a significant neutralizing antibody response and protection against MERS-CoV challenge in vaccinated animals. To prepare for the manufacture and first-in-human testing of the vaccine, we have developed a process to stably produce the recombinant MERS S377-588 protein in Chinese hamster ovary (CHO) cells. To accomplish this, we transfected an adherent dihydrofolate reductase-deficient CHO cell line (adCHO) with a plasmid encoding S377-588 fused with the human IgG Fc fragment (S377-588-Fc). We then demonstrated the interleukin-2 signal peptide-directed secretion of the recombinant protein into extracellular milieu. Using a gradually increasing methotrexate (MTX) concentration to 5 μM, we increased protein yield by a factor of 40. The adCHO-expressed S377-588-Fc recombinant protein demonstrated functionality and binding specificity identical to those of the protein from transiently transfected HEK293T cells. In addition, hCD26/dipeptidyl peptidase-4 (DPP4) transgenic mice vaccinated with AddaVax-adjuvanted S377-588-Fc could produce neutralizing antibodies against MERS-CoV and survived for at least 21 days after challenge with live MERS-CoV with no evidence of immunological toxicity or eosinophilic immune enhancement. To prepare for large scale-manufacture of the vaccine antigen, we have further developed a high-yield monoclonal suspension CHO cell line.
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Affiliation(s)
- Mun Peak Nyon
- Tropical Infectious Diseases Research and Education Centre (TIDREC), University of Malaya, Kuala Lumpur, Malaysia; Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Lanying Du
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Chien-Te Kent Tseng
- Department of Microbiology and Immunology & Center of Biodefense and Emerging Diseases, University of Texas Medical Branch, Galveston, TX, USA
| | - Christopher A Seid
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Jeroen Pollet
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Kevin S Naceanceno
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Anurodh Agrawal
- Department of Microbiology and Immunology & Center of Biodefense and Emerging Diseases, University of Texas Medical Branch, Galveston, TX, USA
| | - Abdullah Algaissi
- Department of Microbiology and Immunology & Center of Biodefense and Emerging Diseases, University of Texas Medical Branch, Galveston, TX, USA
| | - Bi-Hung Peng
- Department of Microbiology and Immunology & Center of Biodefense and Emerging Diseases, University of Texas Medical Branch, Galveston, TX, USA
| | - Wanbo Tai
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Shibo Jiang
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA; Key Laboratory of Medical Molecular Virology of MOE/MOH, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Maria Elena Bottazzi
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA.
| | - Ulrich Strych
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Peter J Hotez
- Texas Children's Hospital Center for Vaccine Development, USA; Department of Pediatrics, National School of Tropical Medicine, Baylor College of Medicine, Houston, TX, USA
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Kolokoltsova OA, Grant AM, Huang C, Smith JK, Poussard AL, Tian B, Brasier AR, Peters CJ, Tseng CTK, de la Torre JC, Paessler S. RIG-I enhanced interferon independent apoptosis upon Junin virus infection. PLoS One 2014; 9:e99610. [PMID: 24918927 PMCID: PMC4053358 DOI: 10.1371/journal.pone.0099610] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 05/15/2014] [Indexed: 12/30/2022] Open
Abstract
Junin virus (JUNV) is the etiological agent of Argentine hemorrhagic fever (AHF), a human disease with a high case-fatality rate. It is widely accepted that arenaviral infections, including JUNV infections, are generally non-cytopathic. In contrast, here we demonstrated apoptosis induction in human lung epithelial carcinoma (A549), human hepatocarcinoma and Vero cells upon infection with the attenuated Candid#1 strain of, JUNV as determined by phosphatidylserine (PS) translocation, Caspase 3 (CASP3) activation, Poly (ADP-ribose) polymerase (PARP) cleavage and/or chromosomal DNA fragmentation. Moreover, as determined by DNA fragmentation, we found that the pathogenic Romero strain of JUNV was less cytopathic than Candid#1 in human hepatocarcinoma and Vero, but more apoptotic in A549 and Vero E6 cells. Additionally, we found that JUNV-induced apoptosis was enhanced by RIG-I signaling. Consistent with the previously reported role of RIG-I like helicase (RLH) signaling in initiating programmed cell death, we showed that cell death or DNA fragmentation of Candid#1-infected A549 cells was decreased upon siRNA or shRNA silencing of components of RIG-I pathway in spite of increased virus production. Similarly, we observed decreased DNA fragmentation in JUNV-infected human hepatocarcinoma cells deficient for RIG-I when compared with that of RIG-I-competent cells. In addition, DNA fragmentation detected upon Candid#1 infection of type I interferon (IFN)-deficient Vero cells suggested a type I IFN-independent mechanism of apoptosis induction in response to JUNV. Our work demonstrated for the first time apoptosis induction in various cells of mammalian origin in response to JUNV infection and partial mechanism of this cell death.
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Affiliation(s)
- Olga A. Kolokoltsova
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Ashley M. Grant
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Cheng Huang
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Jennifer K. Smith
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Allison L. Poussard
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
| | - Bing Tian
- Internal Med-Endocrinology, UTMB, Galveston, Texas, United States of America
| | - Allan R. Brasier
- Internal Med-Endocrinology, UTMB, Galveston, Texas, United States of America
| | - Clarence J. Peters
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
- Department of Microbiology and Immunology, UTMB, Galveston, Texas, United States of America
| | - Chien-Te Kent Tseng
- Department of Microbiology and Immunology, UTMB, Galveston, Texas, United States of America
| | - Juan C. de la Torre
- Department of Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California, United States of America
| | - Slobodan Paessler
- Department of Pathology, University of Texas Medical Branch (UTMB), Galveston, Texas, United States of America
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7
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Jiang S, Bottazzi ME, Du L, Lustigman S, Tseng CTK, Curti E, Jones K, Zhan B, Hotez PJ. Roadmap to developing a recombinant coronavirus S protein receptor-binding domain vaccine for severe acute respiratory syndrome. Expert Rev Vaccines 2013; 11:1405-13. [PMID: 23252385 PMCID: PMC3586247 DOI: 10.1586/erv.12.126] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [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] [Indexed: 01/05/2023]
Abstract
A subunit vaccine, RBD-S, is under development to prevent severe acute respiratory syndrome (SARS) caused by SARS coronavirus (SARS-CoV), which is classified by the US NIH as a category C pathogen. This vaccine is comprised of a recombinant receptor-binding domain (RBD) of the SARS-CoV spike (S) protein and formulated on alum, together with a synthetic glucopyranosyl lipid A. The vaccine would induce neutralizing antibodies without causing Th2-type immunopathology. Vaccine development is being led by the nonprofit product development partnership; Sabin Vaccine Institute and Texas Children’s Hospital Center for Vaccine Development in collaboration with two academic partners (the New York Blood Center and University of Texas Medical Branch); an industrial partner (Immune Design Corporation); and Walter Reed Army Institute of Research. A roadmap for the product development of the RBD-S SARS vaccine is outlined with a goal to manufacture the vaccine for clinical testing within the next 5 years.
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Affiliation(s)
- Shibo Jiang
- Lindsley F Kimball Research Institute, New York Blood Center, New York, NY, USA
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8
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Lokugamage KG, Yoshikawa-Iwata N, Ito N, Watts DM, Wyde PR, Wang N, Newman P, Kent Tseng CT, Peters CJ, Makino S. Chimeric coronavirus-like particles carrying severe acute respiratory syndrome coronavirus (SCoV) S protein protect mice against challenge with SCoV. Vaccine 2007; 26:797-808. [PMID: 18191004 PMCID: PMC2267761 DOI: 10.1016/j.vaccine.2007.11.092] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2007] [Revised: 11/19/2007] [Accepted: 11/29/2007] [Indexed: 01/19/2023]
Abstract
We tested the efficacy of coronavirus-like particles (VLPs) for protecting mice against severe acute respiratory syndrome coronavirus (SCoV) infection. Coexpression of SCoV S protein and E, M and N proteins of mouse hepatitis virus in 293T or CHO cells resulted in the efficient production of chimeric VLPs carrying SCoV S protein. Balb/c mice inoculated with a mixture of chimeric VLPs and alum twice at an interval of four weeks were protected from SCoV challenge, as indicated by the absence of infectious virus in the lungs. The same groups of mice had high levels of SCoV-specific neutralizing antibodies, while mice in the negative control groups, which were not immunized with chimeric VLPs, failed to manifest neutralizing antibodies, suggesting that SCoV-specific neutralizing antibodies are important for the suppression of viral replication within the lungs. Despite some differences in the cellular composition of inflammatory infiltrates, we did not observe any overt lung pathology in the chimeric-VLP-treated mice, when compared to the negative control mice. Our results show that chimeric VLP can be an effective vaccine strategy against SCoV infection.
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Affiliation(s)
- Kumari G Lokugamage
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX 77555, United States
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