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Tripp RA, Martin DE. Antiviral agents and therapeutics against respiratory viruses. Expert Opin Investig Drugs 2024:1-5. [PMID: 39245955 DOI: 10.1080/13543784.2024.2401911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Accepted: 09/04/2024] [Indexed: 09/10/2024]
Abstract
INTRODUCTION Respiratory viruses are responsible for significant worldwide morbidity and mortality. While vaccines are highly effective at reducing the morbidity and mortality associated with viral infections, this protection is incomplete. It requires a high degree of compliance, which is hindered by vaccine hesitancy. To address these gaps, antiviral agents and therapeutics are crucial in combating diseases caused by respiratory viruses. Antiviral agents are broadly classified into two groups: 1) direct-acting antivirals (DAA) and 2) host-directed antivirals (HDA). AREAS COVERED This review comprehensively examines Phase II FDA-approved antiviral drugs for influenza virus, SARS-CoV-2, and RSV as published in clinicaltrials.gov. It focuses on DAAs and various monoclonal antibodies (mAbs) that have been approved for the prevention and treatment of viral respiratory tract infections. EXPERT OPINION Antiviral drugs being developed assess different mechanisms of action to combat viruses and other delivery routes (i.e. oral, inhalation, or parenteral). The associated clinical trials address the impact on disease while determining the appropriate dosage levels for further investigation in Phase III. A robust pipeline of agents is necessary to meet the global need for effective antiviral therapeutics.
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Affiliation(s)
- Ralph A Tripp
- College of Veterinary Medicine, Department of Infectious Diseases, University of Georgia, Athens, GA, USA
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Zheng X, Liu Q, Liang Y, Feng W, Yu H, Tong C, Song B. Advancement in the development of single chain antibodies using phage display technology. PeerJ 2024; 12:e17143. [PMID: 38618563 PMCID: PMC11015834 DOI: 10.7717/peerj.17143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 02/29/2024] [Indexed: 04/16/2024] Open
Abstract
Phage display technology has become an important research tool in biological research, fundamentally changing the traditional monoclonal antibody preparation process, and has been widely used in the establishment of antigen-antibody libraries, drug design, vaccine research, pathogen detection, gene therapy, antigenic epitope research, and cellular signal transduction research.The phage display is a powerful platform for technology development. Using phage display technology, single chain fragment variable (scFv) can be screened, replacing the disadvantage of the large size of traditional antibodies. Phage display single chain antibody libraries have significant biological implications. Here we describe the types of antibodies, including chimeric antibodies, bispecific antibodies, and scFvs. In addition, we describe the phage display system, phage display single chain antibody libraries, screening of specific antibodies by phage libraries and the application of phage libraries.
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Affiliation(s)
- Xiaohui Zheng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Qi Liu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Yimin Liang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Wenzhi Feng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Honghao Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Chunyu Tong
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
| | - Bocui Song
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, China
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Puccetti M, Pariano M, Schoubben A, Giovagnoli S, Ricci M. Biologics, theranostics, and personalized medicine in drug delivery systems. Pharmacol Res 2024; 201:107086. [PMID: 38295917 DOI: 10.1016/j.phrs.2024.107086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 02/05/2024]
Abstract
The progress in human disease treatment can be greatly advanced through the implementation of nanomedicine. This approach involves targeted and cell-specific therapy, controlled drug release, personalized dosage forms, wearable drug delivery, and companion diagnostics. By integrating cutting-edge technologies with drug delivery systems, greater precision can be achieved at the tissue and cellular levels through the use of stimuli-responsive nanoparticles, and the development of electrochemical sensor systems. This precision targeting - by virtue of nanotechnology - allows for therapy to be directed specifically to affected tissues while greatly reducing side effects on healthy tissues. As such, nanomedicine has the potential to transform the treatment of conditions such as cancer, genetic diseases, and chronic illnesses by facilitating precise and cell-specific drug delivery. Additionally, personalized dosage forms and wearable devices offer the ability to tailor treatment to the unique needs of each patient, thereby increasing therapeutic effectiveness and compliance. Companion diagnostics further enable efficient monitoring of treatment response, enabling customized adjustments to the treatment plan. The question of whether all the potential therapeutic approaches outlined here are viable alternatives to current treatments is also discussed. In general, the application of nanotechnology in the field of biomedicine may provide a strong alternative to existing treatments for several reasons. In this review, we aim to present evidence that, although in early stages, fully merging advanced technology with innovative drug delivery shows promise for successful implementation across various disease areas, including cancer and genetic or chronic diseases.
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Affiliation(s)
- Matteo Puccetti
- Department of Pharmaceutical Sciences, University of Perugia, Italy,.
| | | | | | | | - Maurizio Ricci
- Department of Pharmaceutical Sciences, University of Perugia, Italy,.
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Matsui T, Ogimi C. Risk factors for severity in seasonal respiratory viral infections and how they guide management in hematopoietic cell transplant recipients. Curr Opin Infect Dis 2023; 36:529-536. [PMID: 37729657 DOI: 10.1097/qco.0000000000000968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
PURPOSE OF REVIEW Seasonal respiratory virus infections (RVIs) often progress to severe diseases in hematopoietic cell transplant (HCT) recipients. This review summarizes the current evidence on risk factors for the severity of RVIs in this high-risk population and provides clinical management. RECENT FINDINGS The likelihood of the respiratory viral disease progression depends on the immune status of the host and the type of virus. Conventional host factors, such as the immunodeficiency scoring index and the severe immunodeficiency criteria, have been utilized to estimate the risk of progression to severe disease, including mortality. Recent reports have suggested nonconventional risk factors, such as hyperglycemia, hypoalbuminemia, prior use of antibiotics with broad anaerobic activity, posttransplant cyclophosphamide, and pulmonary impairment after RVIs. Identifying novel and modifiable risk factors is important with the advances of novel therapeutic and preventive interventions for RVIs. SUMMARY Validation of recently identified risk factors for severe RVIs in HCT recipients is required. The development of innovative interventions along with appropriate risk stratification is critical to improve outcomes in this vulnerable population.
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Affiliation(s)
- Toshihiro Matsui
- Division of Infectious Diseases, Department of Medical Subspecialties, National Center for Child Health and Development, Tokyo, Japan
| | - Chikara Ogimi
- Division of Infectious Diseases, Department of Medical Subspecialties, National Center for Child Health and Development, Tokyo, Japan
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
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Guo L, Li L, Liu L, Zhang T, Sun M. Neutralising antibodies against human metapneumovirus. THE LANCET. MICROBE 2023; 4:e732-e744. [PMID: 37499668 DOI: 10.1016/s2666-5247(23)00134-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/14/2023] [Accepted: 04/24/2023] [Indexed: 07/29/2023]
Abstract
Human metapneumovirus (hMPV) is one of the leading causes of respiratory infection. Since its discovery in 2001, no specific antiviral or vaccine has been available in contrast to its closely related family member human respiratory syncytial virus (hRSV). Neutralising monoclonal antibodies (nMAbs) are the core effectors of vaccines and are essential therapeutic immune drugs against infectious pathogens. The development of nMAbs against hMPV has accelerated in recent years as a result of breakthroughs in viral fusion (F) protein structural biology and experience with hRSV and other enveloped viruses. We provide an overview of the potent F-specific nMAbs of hMPV, generalise their targeting F antigen epitopes, and discuss the nMAb development strategy and future directions for hMPV and broad-spectrum hMPV, hRSV nMabs, and vaccine research and development.
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Affiliation(s)
- Lei Guo
- Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children's Hospital, Kunming, Yunnan, China
| | - Li Li
- Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children's Hospital, Kunming, Yunnan, China
| | - Li Liu
- Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children's Hospital, Kunming, Yunnan, China
| | - Tiesong Zhang
- Yunnan Key Laboratory of Children's Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children's Hospital, Kunming, Yunnan, China.
| | - Ming Sun
- Institute of Medical Biology, Chinese Academy of Medical Science and Peking Union Medical College, Kunming, Yunnan, China.
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Verheul MK, Nijhof KH, de Zeeuw-Brouwer ML, Duijm G, Ten Hulscher H, de Rond L, Beckers L, Eggink D, van Tol S, Reimerink J, Boer M, van Beek J, Rots N, van Binnendijk R, Buisman AM. Booster Immunization Improves Memory B Cell Responses in Older Adults Unresponsive to Primary SARS-CoV-2 Immunization. Vaccines (Basel) 2023; 11:1196. [PMID: 37515012 PMCID: PMC10384172 DOI: 10.3390/vaccines11071196] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
The generation of a specific long-term immune response to SARS-CoV-2 is considered important for protection against COVID-19 infection and disease. Memory B cells, responsible for the generation of antibody-producing plasmablasts upon a new antigen encounter, play an important role in this process. Therefore, the induction of memory B cell responses after primary and booster SARS-CoV-2 immunizations was investigated in the general population with an emphasis on older adults. Participants, 20-99 years of age, due to receive the mRNA-1273 or BNT162b2 SARS-CoV-2 vaccine were included in the current study. Specific memory B cells were determined by ex vivo ELISpot assays. In a subset of participants, antibody levels, avidity, and virus neutralization capacity were compared to memory B cell responses. Memory B cells specific for both Spike S1 and receptor-binding domain (RBD) were detected in the majority of participants following the primary immunization series. However, a proportion of predominantly older adults showed low frequencies of specific memory B cells. Booster vaccination resulted in a large increase in the frequencies of S1- and RBD-specific memory B cells also for those in which low memory B cell frequencies were detected after the primary series. These data show that booster immunization is important for the generation of a memory B cell response, as a subset of older adults shows a suboptimal response to the primary SARS-CoV-2 immunization series. It is anticipated that these memory B cells will play a significant role in the immune response following viral re-exposure.
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Affiliation(s)
- Marije K Verheul
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Kim H Nijhof
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Mary-Lène de Zeeuw-Brouwer
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Geraly Duijm
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Hinke Ten Hulscher
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Lia de Rond
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Lisa Beckers
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Dirk Eggink
- Centre for Infectious Diseases Research, Diagnostics and Laboratory Surveillance, WHO COVID-19 Reference Laboratory, Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Sophie van Tol
- Centre for Infectious Diseases Research, Diagnostics and Laboratory Surveillance, WHO COVID-19 Reference Laboratory, Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Johan Reimerink
- Centre for Infectious Diseases Research, Diagnostics and Laboratory Surveillance, WHO COVID-19 Reference Laboratory, Center for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), 3721 MA Bilthoven, The Netherlands
| | - Mardi Boer
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Josine van Beek
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Nynke Rots
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Rob van Binnendijk
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
| | - Anne-Marie Buisman
- Centre for Immunology of Infectious Diseases and Vaccines, Center for Infectious Disease Control, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands
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Habet V, Oliveira CR. Clinical Epidemiology of Pediatric Coronavirus Disease 2019 and its Postacute Sequelae. Semin Respir Crit Care Med 2023; 44:66-74. [PMID: 36646086 PMCID: PMC9926930 DOI: 10.1055/s-0042-1759566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has affected individuals of all ages across. Although children generally experience a benign illness from COVID-19, the emergence of novel variants of the virus has resulted in significant changes in the morbidity and mortality rates for this age group. Currently, COVID-19 is the eighth leading cause of pediatric deaths in the United States. In addition to acute respiratory illness, some children can develop a severe postinfectious condition known as a multisystem inflammatory syndrome in children, which can progress to rapid-onset cardiogenic shock. Recovery from COVID-19 can also be slow for some children, resulting in persistent or reoccurring symptoms for months, commonly referred to as long COVID. These postinfectious sequelae are often distressing for children and their parents, can negatively impact the quality of life, and impose a considerable burden on the health care system. In this article, we review the clinical epidemiology of pediatric COVID-19 and outline the management considerations for its acute and postacute manifestations.
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Affiliation(s)
- Victoria Habet
- Section of Critical Care, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
| | - Carlos R. Oliveira
- Section of Infectious Diseases and Global Health, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
- Section of Health Informatics, Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut
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