1
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McCormick RA, Ralbovsky NM, Gilbraith W, Smith JP, Booksh KS. Analyzing atomic force microscopy images of virus-like particles by expectation-maximization. NPJ Vaccines 2024; 9:112. [PMID: 38902288 PMCID: PMC11190231 DOI: 10.1038/s41541-024-00871-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 03/28/2024] [Indexed: 06/22/2024] Open
Abstract
Analysis of virus-like particles (VLPs) is an essential task in optimizing their implementation as vaccine antigens for virus-initiated diseases. Interrogating VLP collections for elasticity by probing with a rigid atomic force microscopy (AFM) tip is a potential method for determining VLP morphological changes. During VLP morphological change, it is not expected that all VLPs would be in the same state. This leads to the open question of whether VLPs may change in a continuous or stepwise fashion. For continuous change, the statistical distribution of observed VLP properties would be expected as a single distribution, while stepwise change would lead to a multimodal distribution of properties. This study presents the application of a Gaussian mixture model (GMM), fit by the Expectation-Maximization (EM) algorithm, to identify different states of VLP morphological change observed by AFM imaging.
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Affiliation(s)
- Rachel A McCormick
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Nicole M Ralbovsky
- Analytical Research & Development, MRL, Merck & Co., Inc, West Point, PA, 19486, USA
| | - William Gilbraith
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA
| | - Joseph P Smith
- Process Research & Development, MRL, Merck & Co., Inc, West Point, PA, 19486, USA.
| | - Karl S Booksh
- Department of Chemistry and Biochemistry, University of Delaware, Newark, DE, 19716, USA.
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2
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Travassos R, Martins SA, Fernandes A, Correia JDG, Melo R. Tailored Viral-like Particles as Drivers of Medical Breakthroughs. Int J Mol Sci 2024; 25:6699. [PMID: 38928403 DOI: 10.3390/ijms25126699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Despite the recognized potential of nanoparticles, only a few formulations have progressed to clinical trials, and an even smaller number have been approved by the regulatory authorities and marketed. Virus-like particles (VLPs) have emerged as promising alternatives to conventional nanoparticles due to their safety, biocompatibility, immunogenicity, structural stability, scalability, and versatility. Furthermore, VLPs can be surface-functionalized with small molecules to improve circulation half-life and target specificity. Through the functionalization and coating of VLPs, it is possible to optimize the response properties to a given stimulus, such as heat, pH, an alternating magnetic field, or even enzymes. Surface functionalization can also modulate other properties, such as biocompatibility, stability, and specificity, deeming VLPs as potential vaccine candidates or delivery systems. This review aims to address the different types of surface functionalization of VLPs, highlighting the more recent cutting-edge technologies that have been explored for the design of tailored VLPs, their importance, and their consequent applicability in the medical field.
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Affiliation(s)
- Rafael Travassos
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - Sofia A Martins
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - Ana Fernandes
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - João D G Correia
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
- Departamento de Engenharia e Ciências Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
| | - Rita Melo
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, CTN, Estrada Nacional 10 (km 139.7), 2695-066 Bobadela, Portugal
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3
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Vemula V, Marudamuthu AS, Prasad S, B M S, S E M, A S, Seal P, Alagumuthu M. Fragment-based design and MD simulations of human papilloma virus-16 E6 protein inhibitors. J Biomol Struct Dyn 2024; 42:288-297. [PMID: 37098806 DOI: 10.1080/07391102.2023.2203775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 03/10/2023] [Indexed: 04/27/2023]
Abstract
The main objective of this study is to screen potential small molecule inhibitors against HPV (Human Papilloma Virus)-16 E6 protein (HPV16 E6P) using a fragment-based approach. Twenty-six natural HPV inhibitors were selected based on the review of the literature. Among them, Luteolin was selected as the reference compound. These 26 compounds were used to generate novel inhibitors against HPV16 E6P. Fragment script and BREED of Schrodinger software were used to build novel inhibitor molecules. The result in 817 novel molecules was docked into the active binding site of HPV E6 protein and the top ten compounds were screened based on binding affinity compared to Luteolin for further study. Compounds Cpd5, Cpd7, and Cpd10 were the most potent inhibitors of HPV16 E6P and these were non-toxic and showed high Gastrointestinal (GI) absorption and positive drug-likeness score. Complexes of these compounds were stable in the 200 ns Molecular Dynamics (MD) simulation. These 3 HPV16 E6P inhibitors could be the lead molecules as new drugs for HPV-related diseases.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vani Vemula
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
| | | | - Sanjay Prasad
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, India
| | - Suman B M
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
| | - Mamatha S E
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
| | - Swathi A
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
| | - Priyanka Seal
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
| | - Manikandan Alagumuthu
- Department of Microbiology, M. S. Ramaiah College of Arts, Science and Commerce, Bengaluru, India
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4
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Tian Q, Huo X, Liu Q, Yang C, Zhang Y, Su J. VP4/VP56/VP35 Virus-like Particles Effectively Protect Grass Carp ( Ctenopharyngodon idella) against GCRV-II Infection. Vaccines (Basel) 2023; 11:1373. [PMID: 37631941 PMCID: PMC10458301 DOI: 10.3390/vaccines11081373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/31/2023] [Accepted: 08/10/2023] [Indexed: 08/29/2023] Open
Abstract
Grass carp reovirus (GCRV) seriously threatens the grass carp (Ctenopharyngodon idella) industry. Prophylactic GCRV vaccines prepared by virus-like particle (VLP) assembly biotechnology can improve effectiveness and safety. The highly immunogenic candidate antigens of GCRV vaccines that have been generally considered are the outer capsid proteins VP4, VP56, and VP35. In this study, VP4, VP56, and VP35 were expressed in an Escherichia coli expression system and a Pichia pastoris expression system. The successful assembly of uniform, stable, and non-toxic VP4/VP56/VP35 VLPs was confirmed through various assays. After vaccination and GCRV infection, the survival rate in the VLPs + adjuvant Astragalus polysaccharide (APS) group was the highest (62%), 40% higher than that in control group (22%). Through the antibody levels, tissue viral load, and antioxidant immunity assays, the P. pastoris VLP vaccine effectively improved IgM levels, alleviated tissue virus load, and regulated antioxidant immune-related indicators. The treatment with P. pastoris VLPs enhanced the mRNA expression of important immune-related genes in the head kidney, as measured by qRT-PCR assay. Upon hematoxylin-eosin staining examination, relatively reduced tissue pathological damage was observed in the VLPs + APS group. The novel vaccine using P. pastoris VLPs as an effective green biological agent provides a prospective strategy for the control of fish viral diseases.
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Affiliation(s)
- Qingqing Tian
- Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (Q.T.); (X.H.); (Q.L.); (Y.Z.)
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Xingchen Huo
- Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (Q.T.); (X.H.); (Q.L.); (Y.Z.)
| | - Qian Liu
- Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (Q.T.); (X.H.); (Q.L.); (Y.Z.)
| | - Chunrong Yang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430000, China;
| | - Yongan Zhang
- Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (Q.T.); (X.H.); (Q.L.); (Y.Z.)
| | - Jianguo Su
- Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (Q.T.); (X.H.); (Q.L.); (Y.Z.)
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
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5
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Mellid-Carballal R, Gutierrez-Gutierrez S, Rivas C, Garcia-Fuentes M. Viral protein nanoparticles (Part 1): Pharmaceutical characteristics. Eur J Pharm Sci 2023; 187:106460. [PMID: 37156338 DOI: 10.1016/j.ejps.2023.106460] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/21/2023] [Accepted: 05/06/2023] [Indexed: 05/10/2023]
Abstract
Viral protein nanoparticles fill the gap between viruses and synthetic nanoparticles. Combining advantageous properties of both systems, they have revolutionized pharmaceutical research. Virus-like particles are characterized by a structure identical to viruses but lacking genetic material. Another type of viral protein nanoparticles, virosomes, are similar to liposomes but include viral spike proteins. Both systems are effective and safe vaccine candidates capable of overcoming the disadvantages of both traditional and subunit vaccines. Besides, their particulate structure, biocompatibility, and biodegradability make them good candidates as vectors for drug and gene delivery, and for diagnostic applications. In this review, we analyze viral protein nanoparticles from a pharmaceutical perspective and examine current research focused on their development process, from production to administration. Advances in synthesis, modification and formulation of viral protein nanoparticles are critical so that large-scale production of viral protein nanoparticle products becomes viable and affordable, which ultimately will increase their market penetration in the future. We will discuss their expression systems, modification strategies, formulation, biopharmaceutical properties, and biocompatibility.
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Affiliation(s)
- Rocio Mellid-Carballal
- CiMUS Research Center, Universidad de Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidad de Santiago de Compostela, Spain
| | - Sara Gutierrez-Gutierrez
- CiMUS Research Center, Universidad de Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidad de Santiago de Compostela, Spain
| | - Carmen Rivas
- CiMUS Research Center, Universidad de Santiago de Compostela, Spain; Health Research Institute of Santiago de Compostela (IDIS), Universidad de Santiago de Compostela, Spain; Departamento de Biología Molecular y Celular, Centro Nacional de Biotecnología (CNB)-CSIC, Spain
| | - Marcos Garcia-Fuentes
- CiMUS Research Center, Universidad de Santiago de Compostela, Spain; Department of Pharmacology, Pharmacy and Pharmaceutical Technology, Universidad de Santiago de Compostela, Spain; Health Research Institute of Santiago de Compostela (IDIS), Universidad de Santiago de Compostela, Spain.
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6
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Witeof AE, Meinerz NM, Walker KD, Funke HH, Garcea RL, Randolph TW. A Single Dose, Thermostable, Trivalent Human Papillomavirus Vaccine Formulated Using Atomic Layer Deposition. J Pharm Sci 2023; 112:2223-2229. [PMID: 36780987 PMCID: PMC10363232 DOI: 10.1016/j.xphs.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 02/13/2023]
Abstract
Formulations of human papillomavirus (HPV) 16, 18, and 31 L1 capsomere protein antigens were spray dried to obtain glassy microspheres that were then coated by atomic layer deposition (ALD) with nanometer-thin protective layers of alumina. Spray-drying was used to formulate human papillomavirus (HPV) 16, 18, and 31 L1 capsomere protein antigens within glassy microspheres to which nanoscopic protective layers of alumina were applied using ALD. Suspensions of alumina-coated, capsomere-containing microparticles were administered in a single dose to mice. ALD-deposited alumina coatings provided thermostability and a delayed in vivo release of capsomere antigens, incorporating both a prime and a boost dose in one injection. Total serotype-specific antibody titers as well as neutralizing titers determined from pseudovirus infectivity assays were unaffected by incubation of the ALD-coated vaccines for at 4, 50, or 70 °C for three months prior to administration. In addition, even after incubation for three months at 70 °C, single doses of ALD-coated vaccines produced both higher total antibody responses and higher neutralizing responses than control immunizations that used two doses of conventional liquid formulations stored at 4 °C.
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Affiliation(s)
- Alyssa E Witeof
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
| | | | | | - Hans H Funke
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
| | - Robert L Garcea
- The BioFrontiers Program, University of Colorado, Boulder, CO, USA; Department of Molecular, Cellular, Developmental Biology, University of Colorado, Boulder, CO, USA
| | - Theodore W Randolph
- Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA.
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7
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Cole K, Al-Kadhimi Z, Talmadge JE. Highlights into historical and current immune interventions for cancer. Int Immunopharmacol 2023; 117:109882. [PMID: 36848790 PMCID: PMC10355273 DOI: 10.1016/j.intimp.2023.109882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 03/01/2023]
Abstract
Immunotherapy is an additional pillar when combined with traditional standards of care such as chemotherapy, radiotherapy, and surgery for cancer patients. It has revolutionized cancer treatment and rejuvenated the field of tumor immunology. Several types of immunotherapies, including adoptive cellular therapy (ACT) and checkpoint inhibitors (CPIs), can induce durable clinical responses. However, their efficacies vary, and only subsets of cancer patients benefit from their use. In this review, we address three goals: to provide insight into the history of these approaches, broaden our understanding of immune interventions, and discuss current and future approaches. We highlight how cancer immunotherapy has evolved and discuss how personalization of immune intervention may address present limitations. Cancer immunotherapy is considered a recent medical achievement and in 2013 was selected as the "Breakthrough of the Year" by Science. While the breadth of immunotherapeutics has been rapidly expanding, to include the use of chimeric antigen receptor (CAR) T-cell therapy and immune checkpoint inhibitor (ICI) therapy, immunotherapy dates back over 3000 years. The expansive history of immunotherapy, and related observations, have resulted in several approved immune therapeutics beyond the recent emphasis on CAR-T and ICI therapies. In addition to other classical forms of immune intervention, including human papillomavirus (HPV), hepatitis B, and the Mycobacterium bovis Bacillus Calmette-Guérin (BCG) tuberculosis vaccines, immunotherapies have had a broad and durable impact on cancer therapy and prevention. One classic example of immunotherapy was identified in 1976 with the use of intravesical administration of BCG in patients with bladder cancer; resulting in a 70 % eradication rate and is now standard of care. However, a greater impact from the use of immunotherapy is documented by the prevention of HPV infections that are responsible for 98 % of cervical cancer cases. In 2020, the World Health Organization (WHO) estimated that 341,831 women died from cervical cancer [1]. However, administration of a single dose of a bivalent HPV vaccine was shown to be 97.5 % effective in preventing HPV infections. These vaccines not only prevent cervical squamous cell carcinoma and adenocarcinoma, but also oropharyngeal, anal, vulvar, vaginal, and penile squamous cell carcinomas. The breadth, response and durability of these vaccines can be contrasted with CAR-T-cell therapies, which have significant barriers to their widespread use including logistics, manufacturing limitations, toxicity concerns, financial burden and lasting remissions observed in only 30 to 40 % of responding patients. Another, recent immunotherapy focus are ICIs. ICIs are a class of antibodies that can increase the immune responses against cancer cells in patients. However, ICIs are only effective against tumors with a high mutational burden and are associated with a broad spectrum of toxicities requiring interruption of administration and/or administration corticosteroids; both of which limit immune therapy. In summary, immune therapeutics have a broad impact worldwide, utilizing numerous mechanisms of action and when considered in their totality are more effective against a broader range of tumors than initially considered. These new cancer interventions have tremendous potential notability when multiple mechanisms of immune intervention are combined as well as with standard of care modalities.
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Affiliation(s)
- Kathryn Cole
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Zaid Al-Kadhimi
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - James E Talmadge
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198-5950, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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8
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Choi S, Ismail A, Pappas-Gogos G, Boussios S. HPV and Cervical Cancer: A Review of Epidemiology and Screening Uptake in the UK. Pathogens 2023; 12:pathogens12020298. [PMID: 36839570 PMCID: PMC9960303 DOI: 10.3390/pathogens12020298] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 01/31/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Cervical cancer is the fourth most common malignancy in females worldwide, and a leading cause of death in the United Kingdom (UK). The human papillomavirus (HPV) is the strongest risk factor for developing cervical intraepithelial neoplasia and cancer. Across the UK, the national HPV immunisation programme, introduced in 2008, has been successful in protecting against HPV-related infections. Furthermore, the National Health Service (NHS) implemented the cytology-based cervical cancer screening service to all females aged 25 to 64, which has observed a decline in cervical cancer incidence. In the UK, there has been an overall decline in age-appropriate coverage since April 2010. In 2019, the COVID-19 pandemic disrupted NHS cancer screening and immunisation programmes, leading to a 6.8% decreased uptake of cervical cancer screening from the previous year. Engagement with screening has also been associated with social deprivation. In England, incidence rates of cervical cancer were reported to be 65% higher in the most deprived areas compared to the least, with lifestyle factors such as cigarette consumption contributing to 21% of cervical cancer cases. In this article, we provide an update on the epidemiology of cervical cancer, and HPV pathogenesis and transmission, along with the current prevention programmes within the NHS.
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Affiliation(s)
- Sunyoung Choi
- GKT School of Medicine, King’s College London, London SE1 9RT, UK
| | - Ayden Ismail
- GKT School of Medicine, King’s College London, London SE1 9RT, UK
| | - George Pappas-Gogos
- Department of General Surgery, University Hospital of Alexandroupolis, School of Medicine, Democritus University of Thrace, 6th Kilometer, 68100 Alexandroupolis, Greece
| | - Stergios Boussios
- Department of Medical Oncology, Medway NHS Foundation Trust, Windmill Road, Kent, Gillingham ME7 5NY, UK
- Faculty of Life Sciences & Medicine, School of Cancer & Pharmaceutical Sciences, King’s College London, London SE1 9RT, UK
- Kent Medway Medical School, University of Kent, Kent, Canterbury CT2 7LX, UK
- AELIA Organization, 9th Km Thessaloniki—Thermi, 57001 Thessaloniki, Greece
- Correspondence: or or or
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9
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Li Y, Champion JA. Self-assembling nanocarriers from engineered proteins: Design, functionalization, and application for drug delivery. Adv Drug Deliv Rev 2022; 189:114462. [PMID: 35934126 DOI: 10.1016/j.addr.2022.114462] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/09/2022] [Accepted: 07/15/2022] [Indexed: 01/24/2023]
Abstract
Self-assembling proteins are valuable building blocks for constructing drug nanocarriers due to their self-assembly behavior, monodispersity, biocompatibility, and biodegradability. Genetic and chemical modifications allow for modular design of protein nanocarriers with effective drug encapsulation, targetability, stimuli responsiveness, and in vivo half-life. Protein nanocarriers have been developed to deliver various therapeutic molecules including small molecules, proteins, and nucleic acids with proven in vitro and in vivo efficacy. This article reviews recent advances in protein nanocarriers that are not derived from natural protein nanostructures, such as protein cages or virus like particles. The protein nanocarriers described here are self-assembled from rationally or de novo designed recombinant proteins, as well as recombinant proteins complexed with other biomolecules, presenting properties that are unique from those of natural protein carriers. Design, functionalization, and therapeutic application of protein nanocarriers will be discussed.
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Affiliation(s)
- Yirui Li
- BioEngineering Program, Georgia Institute of Technology, United States
| | - Julie A Champion
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, GA 30332, United States; BioEngineering Program, Georgia Institute of Technology, United States.
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10
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Soumia M, Hajji H, El Mzibri M, Younes FZ, Mohammed B, Mohamed B, Benaissa M. In-Silico Molecular Modeling Studies to Identify Novel Potential Inhibitors of HPV E6 Protein. Vaccines (Basel) 2022; 10:vaccines10091452. [PMID: 36146532 PMCID: PMC9505724 DOI: 10.3390/vaccines10091452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/17/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022] Open
Abstract
The etiological agent of some anogenital tract cancers is infection with the high-risk human papillomavirus (HPV). Currently, prophylactic vaccines against HPV have been validated, but the presence of drug treatment directed against the infection and its oncogenic effects remain essential. Among the best drug targets, viral oncoprotein E6 has been identified as a key factor in cell immortalization and tumor progression in HPV-positive cells. E6, through interaction with the cellular ubiquitin ligase E6AP, can promote the degradation of p53, a tumor suppressor protein. Therefore, suppression of the creation of the E6-E6AP complex is one of the essential strategies to inhibit the survival and proliferation of infected cells. In the present study, we proposed an in-silico approach for the discovery of small molecules with inhibitory activity on the E6-E6AP interaction. The first three compounds (F0679-0355, F33774-0275, and F3345-0326) were selected on the basis of virtual screening and prediction of the molecules' ADMET properties and docking with E6 protein, these molecules were selected for further study by investigating their stability in the E6 complex and their inhibitory effect on the E6-E6AP interaction by molecular dynamics (MD) simulation. The identified molecules thus represent a good starting point for the development of anti-HPV drugs.
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Affiliation(s)
- Moujane Soumia
- Biochemistry of Natural Substances, Faculty of Science and Techniques, Moulay Ismail University, Errachdia 50003, Morocco
| | - Halima Hajji
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, Moulay Ismail University, Meknes 52202, Morocco
- EST Khenifra, Sultan Moulay Sliman University, Khenifra 23000, Morocco
| | - Mohamed El Mzibri
- Biology and Medical Research Unit, National Centre for Energy, Nuclear Sciences and Techniques (CNESTEN), Rabat 10001, Morocco
| | - Filali Zegzouti Younes
- LABASE Laboratory, Faculty of Science of Meknes, Moulay Ismail University, Meknes 52202, Morocco
| | - Bouachrine Mohammed
- Molecular Chemistry and Natural Substances Laboratory, Faculty of Science, Moulay Ismail University, Meknes 52202, Morocco
- EST Khenifra, Sultan Moulay Sliman University, Khenifra 23000, Morocco
| | - Benlyas Mohamed
- Biochemistry of Natural Substances, Faculty of Science and Techniques, Moulay Ismail University, Errachdia 50003, Morocco
| | - Moualij Benaissa
- Biochemistry of Natural Substances, Faculty of Science and Techniques, Moulay Ismail University, Errachdia 50003, Morocco
- Correspondence:
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11
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Corrêa FM, Migowski A, de Almeida LM, Soares MA. Cervical cancer screening, treatment and prophylaxis in Brazil: Current and future perspectives for cervical cancer elimination. Front Med (Lausanne) 2022; 9:945621. [PMID: 36091685 PMCID: PMC9449345 DOI: 10.3389/fmed.2022.945621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
As a middle-income country, Brazil has one of the largest public health systems worldwide, which deals with free and universal access to health care. Regarding cervical cancer, the country possesses a large infrastructure for the screening of premalignant and malignant lesions, but yet based on old technology, having Papanicolaou as the major screening method, followed by colposcopy and treatment. Also, large disparities in access are present, which makes effectiveness of screening and treatment in different regions of the country highly unequal. In this review, we describe and evaluate the current screening, treatment and prophylactic (HPV vaccination) strategies to combat cervical cancer in Brazil, and discuss potential incorporation of more recent technologies in these areas in the country to pave its way toward cervical cancer elimination.
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Affiliation(s)
- Flávia M. Corrêa
- Cancer Early Detection Division, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Arn Migowski
- Cancer Early Detection Division, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Liz M. de Almeida
- Coordination of Prevention and Surveillance, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Marcelo A. Soares
- Oncovirology Program, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
- Department of Genetics, Universidade Federal Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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12
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Hou W, Lv L, Wang Y, Xing M, Guo Y, Xie D, Wei X, Zhang X, Liu H, Ren J, Zhou D. 6-Valent Virus-Like Particle-Based Vaccine Induced Potent and Sustained Immunity Against Noroviruses in Mice. Front Immunol 2022; 13:906275. [PMID: 35711416 PMCID: PMC9197435 DOI: 10.3389/fimmu.2022.906275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
Norovirus is a major cause of acute gastroenteritis worldwide, and no vaccine is currently available. The genetic and antigenic diversity of Norovirus presents challenges for providing broad immune protection, which calls for a multivalent vaccine application. In this study, we investigated the possibility of developing a virus-like particle (VLP)-based 6-valent Norovirus vaccine candidate (Hexa-VLPs) that covers GI.1, GII.2, GII.3, GII.4, GII.6, and GII.17 genotypes. Hexa-VLPs (30 µg) adjuvanted with 500 µg of aluminum hydroxide (alum) were selected as the optimal immunization dose after a dose-escalation study. Potent and long-lasting blockade antibody responses were induced by 2-or 3-shot Hexa-VLPs, especially for the emerging GII.P16-GII.2 and GII.17 (Kawasaki 2014) genotypes. Hexa-VLPs plus alum elicited Th1/Th2 mixed yet Th2-skewed immune responses, characterized by an IgG1-biased subclass profile and significant IL-4+ T-cell activation. Notably, simultaneous immunization with a mixture of six VLPs revealed no immunological interference among the component antigens. These results demonstrate that Hexa-VLPs are promising broad-spectrum vaccines to provide immunoprotection against major GI/GII epidemic strains in the future.
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Affiliation(s)
- Wenli Hou
- Key Laboratory of Bio resource and Eco-environment, College of Life Science, Sichuan University, Chengdu, China
| | - Lihui Lv
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yihan Wang
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Man Xing
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yingying Guo
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Di Xie
- R&D Centre, Chengdu Kanghua Biological Products Co., Ltd, Chengdu, China
| | - Xin Wei
- R&D Centre, Chengdu Kanghua Biological Products Co., Ltd, Chengdu, China
| | - Xiuyue Zhang
- Key Laboratory of Bio resource and Eco-environment, College of Life Science, Sichuan University, Chengdu, China
| | - Hui Liu
- R&D Centre, Chengdu Kanghua Biological Products Co., Ltd, Chengdu, China
- *Correspondence: Dongming Zhou, ; Jiling Ren, ; Hui Liu,
| | - Jiling Ren
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
- *Correspondence: Dongming Zhou, ; Jiling Ren, ; Hui Liu,
| | - Dongming Zhou
- Department of Pathogen Biology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
- *Correspondence: Dongming Zhou, ; Jiling Ren, ; Hui Liu,
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13
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Increasing Knowledge of Human Papillomavirus Among Young Adults. J Nurse Pract 2022. [DOI: 10.1016/j.nurpra.2022.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Baylon JL, Ursu O, Muzdalo A, Wassermann AM, Adams GL, Spale M, Mejzlik P, Gromek A, Pisarenko V, Hancharyk D, Jenkins E, Bednar D, Chang C, Clarova K, Glick M, Bitton DA. PepSeA: Peptide Sequence Alignment and Visualization Tools to Enable Lead Optimization. J Chem Inf Model 2022; 62:1259-1267. [PMID: 35192366 DOI: 10.1021/acs.jcim.1c01360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Therapeutic peptides offer potential advantages over small molecules in terms of selectivity, affinity, and their ability to target "undruggable" proteins that are associated with a wide range of pathologies. Despite their importance, current molecular design capabilities that inform medicinal chemistry decisions on peptide programs are limited. More specifically, there are unmet needs for structure-activity relationship (SAR) analysis and visualization of linear, cyclic, and cross-linked peptides containing non-natural motifs, which are widely used in drug discovery. To bridge this gap, we developed PepSeA (Peptide Sequence Alignment and Visualization), an open-source, freely available package of sequence-based tools (https://github.com/Merck/PepSeA). PepSeA enables multiple sequence alignment of non-natural amino acids and enhanced visualization with the hierarchical editing language for macromolecules (HELM). Via stepwise SAR analysis of a ChEMBL peptide data set, we demonstrate the utility of PepSeA to accelerate decision making in lead optimization campaigns in pharmaceutical setting. PepSeA represents an initial attempt to expand cheminformatics capabilities for therapeutic peptides and to enable rapid and more efficient design-make-test cycles.
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Affiliation(s)
- Javier L Baylon
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Oleg Ursu
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Anja Muzdalo
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Anne Mai Wassermann
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Gregory L Adams
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Martin Spale
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Petr Mejzlik
- AI & Big Data Analytics, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Anna Gromek
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Viktor Pisarenko
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Dzianis Hancharyk
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Esteban Jenkins
- Foundational Data and Analytics, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - David Bednar
- Foundational Data and Analytics, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
| | - Charlie Chang
- Discovery Research IT, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Kamila Clarova
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic.,Department of Informatics and Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Prague 166 28, Czech Republic
| | - Meir Glick
- Computational and Structural Chemistry, Merck & Co., Inc., Boston, Massachusetts 02115, United States
| | - Danny A Bitton
- R&D Informatics Solutions, MSD Czech Republic s.r.o., Prague 150 00, Czech Republic
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15
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Tang J, Li M, Zhao C, Shen D, Liu L, Zhang X, Wei L. Therapeutic DNA Vaccines against HPV-Related Malignancies: Promising Leads from Clinical Trials. Viruses 2022; 14:v14020239. [PMID: 35215833 PMCID: PMC8874761 DOI: 10.3390/v14020239] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/19/2022] [Accepted: 01/22/2022] [Indexed: 01/27/2023] Open
Abstract
In 2014 and 2021, two nucleic-acid vaccine candidates named MAV E2 and VGX-3100 completed phase III clinical trials in Mexico and U.S., respectively, for patients with human papillomavirus (HPV)-related, high-grade squamous intraepithelial lesions (HSIL). These well-tolerated but still unlicensed vaccines encode distinct HPV antigens (E2 versus E6+E7) to elicit cell-mediated immune responses; their clinical efficacy, as measured by HSIL regression or cure, was modest when compared with placebo or surgery (conization), but both proved highly effective in clearing HPV infection, which should help further optimize strategies for enhancing vaccine immunogenicity, toward an ultimate goal of preventing malignancies in millions of patients who are living with persistent, oncogenic HPV infection but are not expected to benefit from current, prophylactic vaccines. The major roadblocks to a highly efficacious and practical product remain challenging and can be classified into five categories: (i) getting the vaccines into the right cells for efficient expression and presentation of HPV antigens (fusion proteins or epitopes); (ii) having adequate coverage of oncogenic HPV types, beyond the current focus on HPV-16 and -18; (iii) directing immune protection to various epithelial niches, especially anogenital mucosa and upper aerodigestive tract where HPV-transformed cells wreak havoc; (iv) establishing the time window and vaccination regimen, including dosage, interval and even combination therapy, for achieving maximum efficacy; and (v) validating therapeutic efficacy in patients with poor prognosis because of advanced, recurrent or non-resectable malignancies. Overall, the room for improvements is still large enough that continuing efforts for research and development will very likely extend into the next decade.
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Affiliation(s)
- Jianming Tang
- Aeonvital Biomedical Research Institute, Beijing 102208, China; (L.L.); (X.Z.)
- Correspondence: or
| | - Mingzhu Li
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing 100033, China; (M.L.); (C.Z.); (D.S.); (L.W.)
| | - Chao Zhao
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing 100033, China; (M.L.); (C.Z.); (D.S.); (L.W.)
| | - Danhua Shen
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing 100033, China; (M.L.); (C.Z.); (D.S.); (L.W.)
| | - Lei Liu
- Aeonvital Biomedical Research Institute, Beijing 102208, China; (L.L.); (X.Z.)
| | - Xiujun Zhang
- Aeonvital Biomedical Research Institute, Beijing 102208, China; (L.L.); (X.Z.)
| | - Lihui Wei
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing 100033, China; (M.L.); (C.Z.); (D.S.); (L.W.)
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16
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Dong M, Meinerz NM, Walker KD, Garcea RL, Randolph TW. Thermostability of a trivalent, capsomere-based vaccine for human papillomavirus infection. Eur J Pharm Biopharm 2021; 168:131-138. [PMID: 34438020 DOI: 10.1016/j.ejpb.2021.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 08/09/2021] [Accepted: 08/19/2021] [Indexed: 12/17/2022]
Abstract
Currently licensed vaccines require a cold-chain to maintain efficacy. This cold-chain requirement reduces the availability of vaccines in resource-poor areas of the world. Commercially available human papillomavirus (HPV) vaccines protect against the most common HPV types related to cervical cancer; however, their impact is limited in many regions due to cold-chain requirements. The goal of this study was to test the thermostability of an adjuvanted, trivalent HPV L1 capsomere-based vaccine (containing HPV types 16, 18, and 31) that was formulated by using lyophilization to embed the antigens within a solid, glassy matrix. Thermal stabilities were determined by storing the vaccine formulations for 3 months at 50 °C, followed by immunization of BALB/c mice and measurement of antibody responses. Antibody responses to capsomere vaccines formulated with alum were unchanged after storage for 3 months at 50 °C. Neutralizing responses to these vaccines were unchanged by high-temperature storage, and were equivalent to those generated after administration of the commercially available liquid HPV vaccine Gardasil®9.
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Affiliation(s)
- Miao Dong
- Center for Pharmaceutical Biotechnology, Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA
| | - Natalie M Meinerz
- The BioFrontiers Program, University of Colorado, Boulder, CO, USA; The Department of Molecular, Cellular, Developmental Biology, University of Colorado, Boulder, CO, USA
| | - Kathryne D Walker
- The BioFrontiers Program, University of Colorado, Boulder, CO, USA; The Department of Molecular, Cellular, Developmental Biology, University of Colorado, Boulder, CO, USA
| | - Robert L Garcea
- The BioFrontiers Program, University of Colorado, Boulder, CO, USA; The Department of Molecular, Cellular, Developmental Biology, University of Colorado, Boulder, CO, USA
| | - Theodore W Randolph
- Center for Pharmaceutical Biotechnology, Department of Chemical and Biological Engineering, University of Colorado, Boulder, CO, USA.
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17
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Park S, Auyeung A, Lee DL, Lambert PF, Carchman EH, Sherer NM. HIV-1 Protease Inhibitors Slow HPV16-Driven Cell Proliferation through Targeted Depletion of Viral E6 and E7 Oncoproteins. Cancers (Basel) 2021; 13:949. [PMID: 33668328 PMCID: PMC7956332 DOI: 10.3390/cancers13050949] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/09/2021] [Accepted: 02/20/2021] [Indexed: 02/05/2023] Open
Abstract
High-risk human papillomavirus strain 16 (HPV16) causes oral and anogenital cancers through the activities of two viral oncoproteins, E6 and E7, that dysregulate the host p53 and pRb tumor suppressor pathways, respectively. The maintenance of HPV16-positive cancers requires constitutive expression of E6 and E7. Therefore, inactivating these proteins could provide the basis for an anticancer therapy. Herein we demonstrate that a subset of aspartyl protease inhibitor drugs currently used to treat HIV/AIDS cause marked reductions in HPV16 E6 and E7 protein levels using two independent cell culture models: HPV16-transformed CaSki cervical cancer cells and NIKS16 organotypic raft cultures (a 3-D HPV16-positive model of epithelial pre-cancer). Treatment of CaSki cells with some (lopinavir, ritonavir, nelfinavir, and saquinavir) but not other (indinavir and atazanavir) protease inhibitors reduced E6 and E7 protein levels, correlating with increased p53 protein levels and decreased cell viability. Long-term (>7 day) treatment of HPV16-positive NIKS16 raft cultures with saquinavir caused epithelial atrophy with no discernible effects on HPV-negative rafts, demonstrating selectivity. Saquinavir also reduced HPV16's effects on markers of the cellular autophagy pathway in NIKS16 rafts, a hallmark of HPV-driven pre-cancers. Taken together, these data suggest HIV-1 protease inhibitors be studied further in the context of treating or preventing HPV16-positive cancers.
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Affiliation(s)
- Soyeong Park
- McArdle Laboratory for Cancer Research, Deptartment of Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (S.P.); (D.L.L.); (P.F.L.)
- Institute for Molecular Virology, University of Wisconsin-Madison, Madison, WI 53706, USA
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
| | - Andrew Auyeung
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Denis L. Lee
- McArdle Laboratory for Cancer Research, Deptartment of Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (S.P.); (D.L.L.); (P.F.L.)
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, Deptartment of Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (S.P.); (D.L.L.); (P.F.L.)
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
| | - Evie H. Carchman
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Nathan M. Sherer
- McArdle Laboratory for Cancer Research, Deptartment of Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (S.P.); (D.L.L.); (P.F.L.)
- Institute for Molecular Virology, University of Wisconsin-Madison, Madison, WI 53706, USA
- Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA; (A.A.); (E.H.C.)
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18
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Ojha R, Mason D, Forsyth CM, Deacon GB, Junk PC, Bond AM. Diverse and unexpected outcomes from oxidation of the platinum(II) anticancer agent [Pt{(p-BrC 6F 4)NCH 2CH 2NEt 2}Cl(py)] by hydrogen peroxide. J Inorg Biochem 2021; 218:111360. [PMID: 33711633 DOI: 10.1016/j.jinorgbio.2021.111360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 01/17/2021] [Accepted: 01/17/2021] [Indexed: 12/18/2022]
Abstract
Oxidation of the anti-tumour agent [Pt{(p-BrC6F4)NCH2CH2NEt2}Cl(py)], 1 (py = pyridine) with hydrogen peroxide under a variety of conditions yields a range of organoenamineamidoplatinum(II) compounds [Pt{(p-BrC6F4)NCH=C(X)NEt2}Cl(py)] (X = H, Cl, Br) as well as species with shared occupancy involving H, Cl and Br. Thus, oxidation of the -CH2-CH2- backbone (dehydrogenation) occurs, often accompanied by substitution. Oxidation of 1 with H2O2 in acetone yielded 1:1 co-crystallized [Pt{(p-BrC6F4)NCH=CHNEt2}Cl(py)], 1H and [Pt{(p-BrC6F4)NCH=C(Cl)NEt2}Cl(py)], 1Cl. The former was obtained pure in low yield from the oxidation of 1 with (NH4)2[Ce(NO3)6] in acetone, and the latter was obtained from 1 and H2O2 in CH2Cl2 at near reflux. From the latter reaction under vigorous refluxing [Pt{(p-BrC6F4)NCH=C(Br)NEt2}Cl(py)], 1Br was isolated. In refluxing acetonitrile, oxidation of 1 with H2O2 yielded [Pt{(p-BrC6F4)NCH=C(H0.25Br0.75)NEt2}Cl(py)], 1H0.25Br0.75, in which the alkene is mainly substituted by Br in a dual occupancy. Treatment of 1 with H2O2 and tetrabutylammonium hydroxide in acetone at room temperature formed [Pt{(p-HC6F4)NCH2CH2NEt2}Cl(py)], 2. Oxidation of [Pt{(p-HC6F4)NCH2CH2NEt2}Br(py)], 3 with H2O2 in boiling acetonitrile gave the ligand oxidation product [Pt{(p-HC6F4)NCH=C(Br)NEt2}Br(py)], 3Br. All major products were identified by X-ray crystallography as well as by 1H and 19F NMR spectra. In cases of mixed crystals or dual occupancy compounds, the 19F and 1H NMR spectra showed dissociation into the components in the solution in the same proportions as in isolated crystalline material.
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Affiliation(s)
- Ruchika Ojha
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Dayna Mason
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Craig M Forsyth
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia
| | - Glen B Deacon
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia.
| | - Peter C Junk
- College of Science & Engineering, James Cook University, Townsville, Qld 4811, Australia.
| | - Alan M Bond
- School of Chemistry, Monash University, Clayton 3800, VIC, Australia.
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19
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Using the Past to Maximize the Success Probability of Future Anti-Viral Vaccines. Vaccines (Basel) 2020; 8:vaccines8040566. [PMID: 33019507 PMCID: PMC7712378 DOI: 10.3390/vaccines8040566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 09/16/2020] [Accepted: 09/25/2020] [Indexed: 11/16/2022] Open
Abstract
Rapid obtaining of safe, effective, anti-viral vaccines has recently risen to the top of the international agenda. To maximize the success probability of future anti-viral vaccines, the anti-viral vaccines successful in the past are summarized here by virus type and vaccine type. The primary focus is on viruses with both single-stranded RNA genomes and a membrane envelope, given the pandemic past of influenza viruses and coronaviruses. The following conclusion is reached, assuming that success of future strategies is positively correlated with strategies successful in the past. The primary strategy, especially for emerging pandemic viruses, should be development of vaccine antigens that are live-attenuated viruses; the secondary strategy should be development of vaccine antigens that are inactivated virus particles. Support for this conclusion comes from the complexity of immune systems. These conclusions imply the need for a revision in current strategic planning.
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20
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What the general dental practitioner needs to know about HPV-related oropharyngeal malignancy. Br Dent J 2020; 229:355-360. [PMID: 32978578 DOI: 10.1038/s41415-020-2113-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/11/2020] [Indexed: 11/08/2022]
Abstract
The rates of oropharyngeal squamous cell carcinoma have continued to rise secondary to the increasing prevalence of the human papillomavirus (HPV). HPV-related disease is typically found in younger patients who do not have the traditional risk factors for malignancy. General dental practitioners (GDPs) often examine patients regularly and may therefore have an opportunity to identify oropharyngeal malignancies at an early stage. However, many GDPs are unfamiliar with oropharyngeal anatomy, pathology and clinical examination. This review summarises the key points in identifying patients with oropharyngeal malignancy who necessitate urgent referral.
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21
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Progress in the Production of Virus-Like Particles for Vaccination against Hepatitis E Virus. Viruses 2020; 12:v12080826. [PMID: 32751441 PMCID: PMC7472025 DOI: 10.3390/v12080826] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/16/2020] [Accepted: 07/28/2020] [Indexed: 12/13/2022] Open
Abstract
Hepatitis E virus (HEV), a pathogen that causes acute viral hepatitis, is a small icosahedral, quasi-enveloped, positive ssRNA virus. Its genome has three open reading frames (ORFs), with ORF1 and ORF3 encoding for nonstructural and regulatory proteins, respectively, while ORF2 is translated into the structural, capsid protein. ORF2 is most widely used for vaccine development in viral hepatitis. Hepatitis E virus-like particles (VLPs) are potential vaccine candidates against HEV infection. VLPs are composed of capsid subunits mimicking the natural configuration of the native virus but lack the genetic material needed for replication. As a result, VLPs are unable to replicate and cause disease, constituting safe vaccine platforms. Currently, the recombinant VLP-based vaccine Hecolin® against HEV is only licensed in China. Herein, systematic information about the expression of various HEV ORF2 sequences and their ability to form VLPs in different systems is provided.
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22
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Ricci-López J, Vidal-Limon A, Zunñiga M, Jimènez VA, Alderete JB, Brizuela CA, Aguila S. Molecular modeling simulation studies reveal new potential inhibitors against HPV E6 protein. PLoS One 2019; 14:e0213028. [PMID: 30875378 PMCID: PMC6420176 DOI: 10.1371/journal.pone.0213028] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/13/2019] [Indexed: 11/18/2022] Open
Abstract
High-risk strains of human papillomavirus (HPV) have been identified as the etiologic agent of some anogenital tract, head, and neck cancers. Although prophylactic HPV vaccines have been approved; it is still necessary a drug-based treatment against the infection and its oncogenic effects. The E6 oncoprotein is one of the most studied therapeutic targets of HPV, it has been identified as a key factor in cell immortalization and tumor progression in HPV-positive cells. E6 can promote the degradation of p53, a tumor suppressor protein, through the interaction with the cellular ubiquitin ligase E6AP. Therefore, preventing the formation of the E6-E6AP complex is one of the main strategies to inhibit the viability and proliferation of infected cells. Herein, we propose an in silico pipeline to identify small-molecule inhibitors of the E6-E6AP interaction. Virtual screening was carried out by predicting the ADME properties of the molecules and performing ensemble-based docking simulations to E6 protein followed by binding free energy estimation through MM/PB(GB)SA methods. Finally, the top-three compounds were selected, and their stability in the E6 docked complex and their effect in the inhibition of the E6-E6AP interaction was corroborated by molecular dynamics simulation. Therefore, this pipeline and the identified molecules represent a new starting point in the development of anti-HPV drugs.
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Affiliation(s)
- Joel Ricci-López
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autonoma de Mèxico, Ensenada, Baja California, México
| | - Abraham Vidal-Limon
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autonoma de Mèxico, Ensenada, Baja California, México
| | - Matías Zunñiga
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Sede Concepción, Chile
| | - Verónica A. Jimènez
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andres Bello, Sede Concepción, Chile
| | - Joel B. Alderete
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepción, Chile
- Instituto de Química de Recursos Naturales, Universidad de Talca, Talca, Chile
| | | | - Sergio Aguila
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autonoma de Mèxico, Ensenada, Baja California, México
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23
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Hainline KM, Fries CN, Collier JH. Progress Toward the Clinical Translation of Bioinspired Peptide and Protein Assemblies. Adv Healthc Mater 2018; 7:1700930. [PMID: 29115746 PMCID: PMC5858183 DOI: 10.1002/adhm.201700930] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/11/2017] [Indexed: 12/16/2022]
Abstract
Supramolecular materials composed of proteins and peptides have been receiving considerable attention toward a range of diseases and conditions from vaccines to drug delivery. Owing to the relative newness of this class of materials, the bulk of work to date has been preclinical. However, examples of approved treatments particularly in vaccines, dentistry, and hemostasis demonstrate the translational potential of supramolecular polypeptides. Critical milestones in the clinical development of this class of materials and currently approved supramolecular polypeptide therapies are described in this study. Additional examples of not-yet-approved materials that are steadily advancing toward clinical use are also featured. Spherical assemblies such as virus-like particles, designed protein nanoparticles, and spherical peptide amphiphiles are highlighted, followed by fiber-forming systems such as fibrillizing peptides, fiber-forming peptide-amphiphiles, and filamentous bacteriophages.
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Affiliation(s)
- Kelly M. Hainline
- Biomedical Engineering DepartmentDuke University101 Science Drive, Campus Box 90281DurhamNC27705USA
| | - Chelsea N. Fries
- Biomedical Engineering DepartmentDuke University101 Science Drive, Campus Box 90281DurhamNC27705USA
| | - Joel H. Collier
- Biomedical Engineering DepartmentDuke University101 Science Drive, Campus Box 90281DurhamNC27705USA
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24
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Lunagariya MV, Thakor KP, Waghela BN, Pathak C, Patel MN. Design, synthesis, pharmacological evaluation and DNA interaction studies of binuclear Pt(II) complexes with pyrazolo[1,5-a]pyrimidine scaffold. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Miral V. Lunagariya
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar -388 120 Gujarat India
| | - Khyati P. Thakor
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar -388 120 Gujarat India
| | - Bhargav N. Waghela
- Department of Cell Biology, School of Biological Sciences and Biotechnology; Indian Institute of Advanced Research, Koba Institutional Area; Gandhinagar 382007 Gujarat India
| | - Chadramani Pathak
- Department of Cell Biology, School of Biological Sciences and Biotechnology; Indian Institute of Advanced Research, Koba Institutional Area; Gandhinagar 382007 Gujarat India
| | - Mohan N. Patel
- Department of Chemistry; Sardar Patel University; Vallabh Vidyanagar -388 120 Gujarat India
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25
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Gomez PL, Robinson JM. Vaccine Manufacturing. PLOTKIN'S VACCINES 2018. [PMCID: PMC7152262 DOI: 10.1016/b978-0-323-35761-6.00005-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Prow NA, Tang B, Gardner J, Le TT, Taylor A, Poo YS, Nakayama E, Hirata TDC, Nakaya HI, Slonchak A, Mukhopadhyay P, Mahalingam S, Schroder WA, Klimstra W, Suhrbier A. Lower temperatures reduce type I interferon activity and promote alphaviral arthritis. PLoS Pathog 2017; 13:e1006788. [PMID: 29281739 PMCID: PMC5770078 DOI: 10.1371/journal.ppat.1006788] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 01/16/2018] [Accepted: 12/04/2017] [Indexed: 12/28/2022] Open
Abstract
Chikungunya virus (CHIKV) belongs to a group of mosquito-borne alphaviruses associated with acute and chronic arthropathy, with peripheral and limb joints most commonly affected. Using a mouse model of CHIKV infection and arthritic disease, we show that CHIKV replication and the ensuing foot arthropathy were dramatically reduced when mice were housed at 30°C, rather than the conventional 22°C. The effect was not associated with a detectable fever, but was dependent on type I interferon responses. Bioinformatics analyses of RNA-Seq data after injection of poly(I:C)/jetPEI suggested the unfolded protein response and certain type I interferon responses are promoted when feet are slightly warmer. The ambient temperature thus appears able profoundly to effect anti-viral activity in the periphery, with clear consequences for alphaviral replication and the ensuing arthropathy. These observations may provide an explanation for why alphaviral arthropathies are largely restricted to joints of the limbs and the extremities.
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Affiliation(s)
- Natalie A. Prow
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, Brisbane, Queensland, Australia
| | - Bing Tang
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Joy Gardner
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Thuy T. Le
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Adam Taylor
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Yee S. Poo
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Eri Nakayama
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Thiago D. C. Hirata
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Helder I. Nakaya
- School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Andrii Slonchak
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | | | - Suresh Mahalingam
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Wayne A. Schroder
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - William Klimstra
- Department of Microbiology and Molecular Genetics Center for Vaccine Research University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Andreas Suhrbier
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
- Australian Infectious Disease Research Centre, Brisbane, Queensland, Australia
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27
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Li J, Chen S, Ge J, Lu F, Ren S, Zhao Z, Pu X, Chen X, Sun J, Gu Y. A novel therapeutic vaccine composed of a rearranged human papillomavirus type 16 E6/E7 fusion protein and Fms-like tyrosine kinase-3 ligand induces CD8 + T cell responses and antitumor effect. Vaccine 2017; 35:6459-6467. [PMID: 29029939 DOI: 10.1016/j.vaccine.2017.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/26/2017] [Accepted: 09/03/2017] [Indexed: 01/15/2023]
Abstract
The development of cervical cancer is mainly caused by infection with high risk genotypes of human papillomavirus, particularly type 16 (HPV16), which accounts for more than 50% of cervical cancer. The two early viral oncogenes, E6 and E7, are continuously expressed in cervical cancer cells and are necessary to maintain the malignant cellular phenotype, thus providing ideal targets for immunotherapy of cervical cancer. In this study, a novel vaccine strategy was developed based on a rationally shuffled HPV16 E6/E7 fusion protein, the addition of Fms-like tyrosine kinase-3 ligand (Flt3L) or the N domain of calreticulin (NCRT), and the usage of a CpG adjuvant. Four recombinant proteins were constructed: m16E6E7 (mutant E6/E7 fusion protein), rm16E6E7 (rearranged mutant HPV16 E6/E7 fusion protein), Flt3L-RM16 (Flt3L fused to rm16E6E7), and NCRT-RM16 (NCRT fused to rm16E6E7). Our results suggest that Flt3L-RM16 was the most potent of these proteins in terms of inducing E6- and E7-specific CD8+ T cell responses. Additionally, Flt3L-RM16 significantly induced regression of established E6/E7-expressing TC-1 tumors. Higher doses of Flt3L-RM16 trended toward higher levels of antitumor activity, but these differences did not reach statistical significance. In summary, this study found that Flt3L-RM16 fusion protein is a promising therapeutic vaccine for immunotherapy of HPV16-associated cervical cancer.
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Affiliation(s)
- Jianqiang Li
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Si Chen
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Jun Ge
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Feng Lu
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Sulin Ren
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Zhiqiang Zhao
- Suzhou Yuankang Bio-pharmaceutical Co., Ltd., Suzhou, China.
| | - Xiuying Pu
- Suzhou Yuankang Bio-pharmaceutical Co., Ltd., Suzhou, China.
| | - Xiaoxiao Chen
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Jiaojiao Sun
- Jiangsu Theravac Bio-pharmaceutical CO., Ltd, Nanjing, China.
| | - Yueqing Gu
- China Pharmaceutical University, Nanjing, China.
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28
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Luxembourg A, Moeller E. 9-Valent human papillomavirus vaccine: a review of the clinical development program. Expert Rev Vaccines 2017; 16:1119-1139. [PMID: 28956458 DOI: 10.1080/14760584.2017.1383158] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
INTRODUCTION The 9-valent human papillomavirus (9vHPV) vaccine covers the same HPV types (6/11/16/18) as the quadrivalent HPV (qHPV) vaccine and 5 additional cancer-causing types (31/33/45/52/58). Epidemiological studies indicate that the 9vHPV vaccine could prevent approximately 90% of cervical cancers, 70-85% of high-grade cervical dysplasia (precancers), 85-95% of HPV-related vulvar, vaginal, and anal cancers, and 90% of genital warts. Areas covered: Study design features and key findings from the 9vHPV vaccine clinical development program are reviewed. In particular, 9vHPV vaccine efficacy was established in a Phase III study in young women age 16-26 years. Efficacy results in young women were extrapolated to pre- and young adolescent girls and boys and young men by immunological bridging (i.e., demonstration of non-inferior immunogenicity in these groups versus young women). Expert commentary: The development of the 9vHPV vaccine is the outcome of 20 years of continuous clinical research. Broad vaccination programs could help substantially decrease the incidence of HPV-related disease.
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29
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Barroeta JE, Adhikari-Guragain D, Grotkowski CE. Cervical cancer screening in the era of HPV vaccination: A review of shifting paradigms in cytopathology. Diagn Cytopathol 2017; 45:903-914. [PMID: 28589649 DOI: 10.1002/dc.23737] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 03/16/2017] [Accepted: 04/07/2017] [Indexed: 01/14/2023]
Abstract
Significant changes in cervical cancer screening practice, guidelines, and prevention of cervical cancer have taken place in recent years including the raising of initial cervical cancer screening age, changes in frequency of cytology screening, and the adoption of high risk HPV and cytology co-testing for some patients; the introduction of the bivalent, quadrivalent, and 9-valent HPV vaccines; and the recent approval of high risk HPV testing as primary screening with the use of cytology as triage in positive cases. This review discusses the significance of primary HPV screening, the impact of HPV vaccination in the prevalence of cervical cancer and its precursors, the interplay between high risk HPV testing and vaccination, and the implications for clinical and cytological management. Future strategies for cervical screening in the post-vaccination era are also discussed.
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Affiliation(s)
- Julieta E Barroeta
- Department of Pathology, Cooper University Hospital, M.D. Anderson Cancer Center at Cooper, Camden, New Jersey
| | - Deepti Adhikari-Guragain
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Carolyn E Grotkowski
- Department of Pathology, Cooper University Hospital, M.D. Anderson Cancer Center at Cooper, Camden, New Jersey
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30
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Yin F, Wang Y, Chen N, Jiang D, Qiu Y, Wang Y, Yan M, Chen J, Zhang H, Liu Y. A novel trivalent HPV 16/18/58 vaccine with anti-HPV 16 and 18 neutralizing antibody responses comparable to those induced by the Gardasil quadrivalent vaccine in rhesus macaque model. PAPILLOMAVIRUS RESEARCH 2017; 3:85-90. [PMID: 28720462 PMCID: PMC5883244 DOI: 10.1016/j.pvr.2017.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/23/2017] [Accepted: 02/27/2017] [Indexed: 12/28/2022]
Abstract
Persistent infection with human papillomavirus (HPV) is a key factor in the development of precancerous lesions and invasive cervical cancer. Prophylactic vaccines to immunize against HPV are an effective approach to reducing HPV related disease burden. In this study, we investigated the immunogenicity and dosage effect of a trivalent HPV 16/18/58 vaccine (3vHPV) produced in Escherichia coli (E.coli), with Gardasil quadrivalent vaccine (4vHPV, Merck & Co.) as a positive control. Sera collected from rhesus macaques vaccinated with three dosage formulations of 3vHPV (termed low-, mid-, and high-dosage formulations, respectively), and the 4vHPV vaccine were analyzed by both Pseudovirus-Based Neutralization Assay (PBNA) and Enzyme-Linked Immunosorbent Assay (ELISA). Strong immune responses against HPV 16/18/58 were successfully elicited, and dosage-dependence was observed, with likely occurrence of immune interference between different L1-VLP antigens. HPV 16/18 specific neutralizing antibody (nAb) and total immunoglobulin G (IgG) antibody responses in rhesus macaques receiving 3vHPV at the three dosages tested were generally non-inferior to those observed in rhesus macaques receiving 4vHPV throughout the study period. Particularly, HPV 18 nAb titers induced by the mid-dosage formulation that contained the same amounts of HPV 16/18 L1-VLPs as Gardasil 4vHPV were between 7.3 to 12.7-fold higher compared to the positive control arm from weeks 24-64. The durability of antibody responses specific to HPV 16/18 elicited by 3vHPV vaccines was also shown to be non-inferior to that associated with Gardasil 4vHPV.
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Affiliation(s)
- Fei Yin
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Yajun Wang
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Na Chen
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Dunquan Jiang
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Yefeng Qiu
- Laboratory Animal Centre of Academy of Military Medical Sciences, Beijing 100071, China
| | - Yan Wang
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Mei Yan
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Jianping Chen
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China
| | - Haijiang Zhang
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China.
| | - Yongjiang Liu
- Beijing Health Guard Biotechnology Inc., Beijing 100176, China.
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31
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Kim SM. Human papilloma virus in oral cancer. J Korean Assoc Oral Maxillofac Surg 2016; 42:327-336. [PMID: 28053902 PMCID: PMC5206237 DOI: 10.5125/jkaoms.2016.42.6.327] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 09/21/2016] [Indexed: 01/10/2023] Open
Abstract
Cervical cancer is the second most prevalent cancer among women, and it arises from cells that originate in the cervix uteri. Among several causes of cervical malignancies, infection with some types of human papilloma virus (HPV) is well known to be the greatest cervical cancer risk factor. Over 150 subtypes of HPV have been identified; more than 40 types of HPVs are typically transmitted through sexual contact and infect the anogenital region and oral cavity. The recently introduced vaccine for HPV infection is effective against certain subtypes of HPV that are associated with cervical cancer, genital warts, and some less common cancers, including oropharyngeal cancer. Two HPV vaccines, quadrivalent and bivalent types that use virus-like particles (VLPs), are currently used in the medical commercial market. While the value of HPV vaccination for oral cancer prevention is still controversial, some evidence supports the possibility that HPV vaccination may be effective in reducing the incidence of oral cancer. This paper reviews HPV-related pathogenesis in cancer, covering HPV structure and classification, trends in worldwide applications of HPV vaccines, effectiveness and complications of HPV vaccination, and the relationship of HPV with oral cancer prevalence.
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Affiliation(s)
- Soung Min Kim
- Oral and Maxillofacial Microvascular Reconstruction Lab, Brong Ahafo Regional Hospital, Sunyani, Ghana.; Department of Oral and Maxillofacial Surgery, Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea
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32
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Mostafa MM, Al-Ghobashy MA, Fathalla FA, Salem MY. Immunoaffinity extraction using conformation-dependent antibodies coupled to SE-HPLC for the development of stability and potency-indicating assay for quadrivalent human papillomavirus vaccine. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1032:211-217. [PMID: 27037127 DOI: 10.1016/j.jchromb.2016.03.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/12/2016] [Accepted: 03/23/2016] [Indexed: 10/22/2022]
Abstract
Quadrivalent human papillomavirus (HPV) vaccine is formulated of four types of non-infectious recombinant virus like particles (VLPs) that are structurally and immunologically similar to the corresponding infectious HPV virus types 6, 11, 16 and 18. With almost identical physical, chemical and structural properties of the four types of VLPs, ELISA remains the only approved in vitro potency testing assay. In this study, an alternative industry-friendly, stability- and potency-indicating assay protocol was developed and validated for the determination of HPV vaccine. Vacuum-driven immunoaffinity extraction (IAE) was employed using type-specific, conformation-dependent antibodies against each type of HPV VLPs. ELISA assay was employed to evaluate the ability of IAE columns to specifically separate each of the four types of VLPs from their quadrivalent mixture. Mean percentage recoveries of 76.76±2.69, 69.12±5.79, 84.86±5.25 and 71.14±4.50% were obtained for VLPs types 6, 11, 16 and 18, respectively with no significant interference in each case. Antigen content was then determined using SE-HPLC over a concentration range of 5.00-20.00μg/mL (r>0.998) for VLPs type 6, 11, 16 and 18, respectively. The SE-HPLC assay was found accurate and precise (RSD<10.00%) with LOD ranging from 1.23-3.85μg/mL. The assay protocol was found superior to conventional ELISA assay with respect to simplicity, total analysis time and cost. Good correlation between the results of analysis obtained using IAE-SE-HPLC and ELISA demonstrated the suitability of the suggested assay protocol for stability and potency assessment with a good potential for implementation for batch release. This approach should be applicable for quality assessment of other vaccine preparations based on VLPs.
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Affiliation(s)
| | - Medhat A Al-Ghobashy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Egypt; Bioanalysis Research Group, Faculty of Pharmacy, Cairo University, Egypt.
| | - Faten A Fathalla
- National Organization for Research and Control of Biologicals, Egypt
| | - Maissa Y Salem
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Egypt
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33
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Ojha R, Boas JF, Deacon GB, Junk PC, Bond AM. EPR spectroscopic characterization of a monomeric Pt III species produced via electrochemical oxidation of the anticancer compound trans -[Pt II {( p -HC 6 F 4 )NCH 2 CH 2 NEt 2 }Cl(py)]. J Inorg Biochem 2016; 162:194-200. [DOI: 10.1016/j.jinorgbio.2016.01.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 01/03/2016] [Accepted: 01/09/2016] [Indexed: 01/07/2023]
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34
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Bryan JT, Buckland B, Hammond J, Jansen KU. Prevention of cervical cancer: journey to develop the first human papillomavirus virus-like particle vaccine and the next generation vaccine. Curr Opin Chem Biol 2016; 32:34-47. [DOI: 10.1016/j.cbpa.2016.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/23/2016] [Accepted: 03/02/2016] [Indexed: 11/16/2022]
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35
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Angioli R, Lopez S, Aloisi A, Terranova C, De Cicco C, Scaletta G, Capriglione S, Miranda A, Luvero D, Ricciardi R, Montera R, Plotti F. Ten years of HPV vaccines: State of art and controversies. Crit Rev Oncol Hematol 2016; 102:65-72. [DOI: 10.1016/j.critrevonc.2016.03.020] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/16/2016] [Accepted: 03/30/2016] [Indexed: 02/02/2023] Open
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36
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Lee SJ, Yang A, Wu TC, Hung CF. Immunotherapy for human papillomavirus-associated disease and cervical cancer: review of clinical and translational research. J Gynecol Oncol 2016; 27:e51. [PMID: 27329199 PMCID: PMC4944018 DOI: 10.3802/jgo.2016.27.e51] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 05/23/2016] [Indexed: 12/28/2022] Open
Abstract
Cervical cancer is the fourth most lethal women's cancer worldwide. Current treatments against cervical cancer include surgery, radiotherapy, chemotherapy, and anti-angiogenic agents. However, despite the various treatments utilized for the treatment of cervical cancer, its disease burden remains a global issue. Persistent infection of human papillomavirus (HPV) has been identified as an essential step of pathogenesis of cervical cancer and many other cancers, and nation-wide HPV screening as well as preventative HPV vaccination program have been introduced globally. However, even though the commercially available prophylactic HPV vaccines, Gardasil (Merck) and Cervarix (GlaxoSmithKline), are effective in blocking the entry of HPV into the epithelium of cervix through generation of HPV-specific neutralizing antibodies, they cannot eliminate the pre-existing HPV infection. For these reason, other immunotherapeutic options against HPV-associated diseases, including therapeutic vaccines, have been continuously explored. Therapeutic HPV vaccines enhance cell-mediated immunity targeting HPV E6 and E7 antigens by modulating primarily dendritic cells and cytotoxic T lymphocyte. Our review will cover various therapeutic vaccines in development for the treatment of HPV-associated lesions and cancers. Furthermore, we will discuss the potential of immune checkpoint inhibitors that have recently been adopted and tested for their treatment efficacy against HPV-induced cervical cancer.
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Affiliation(s)
- Sung Jong Lee
- Department of Obstetrics and Gynecology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Andrew Yang
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - T C Wu
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Obstetrics and Gynecology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Molecular Microbiology and Immunology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Chien Fu Hung
- Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.,Department of Oncology, Johns Hopkins Medical Institutions, Baltimore, MD, USA.
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37
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Wahome N, Cooper A, Thapa P, Choudhari S, Gao FP, Volkin DB, Middaugh CR. Production of Well-Characterized Virus-like Particles in an Escherichia coli-Based Expression Platform for Preclinical Vaccine Assessments. Methods Mol Biol 2016; 1404:437-457. [PMID: 27076315 DOI: 10.1007/978-1-4939-3389-1_29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this chapter we demonstrate a method to produce virus-like particles (VLPs) from Escherichia coli. Standard bacterial protocols are used for the cloning, transformation, and expression of the protein subunits. A two-step protein purification method is highlighted: one step based on separating soluble proteins with ion-exchange affinity chromatography and a second polishing step using size-exclusion columns to isolate VLP species. The ensuing VLPs can be characterized with a variety of biophysical techniques including ultraviolet (UV)-visible spectroscopy for protein quantification, dynamic light scattering for size distribution determination, and transmission electron microscopy to ascertain size and morphology.
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MESH Headings
- Capsid Proteins/genetics
- Cloning, Molecular
- Drug Evaluation, Preclinical
- Dynamic Light Scattering
- Escherichia coli/genetics
- Genetic Engineering/methods
- Microscopy, Electron, Transmission
- Spectrophotometry, Ultraviolet
- Transformation, Genetic
- Vaccines, Virus-Like Particle/biosynthesis
- Vaccines, Virus-Like Particle/chemistry
- Vaccines, Virus-Like Particle/genetics
- Vaccines, Virus-Like Particle/isolation & purification
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Affiliation(s)
- Newton Wahome
- Department of Pharmaceutical Chemistry, Macromolecule and Vaccine Stabilization Center, University of Kansas, 2095 Constant Ave, Lawrence, KS, 66047, USA.
| | - Anne Cooper
- Protein Production Group, University of Kansas, Lawrence, KS, 66047, USA
| | - Prem Thapa
- Microscopy and Analytical Imaging Lab, University of Kansas, Lawrence, KS, 66047, USA
| | - Shyamal Choudhari
- Department of Pharmaceutical Chemistry, Macromolecule and Vaccine Stabilization Center, University of Kansas, 2095 Constant Ave, Lawrence, KS, 66047, USA
| | - Fei P Gao
- Protein Production Group, University of Kansas, Lawrence, KS, 66047, USA
| | - David B Volkin
- Department of Pharmaceutical Chemistry, Macromolecule and Vaccine Stabilization Center, University of Kansas, 2095 Constant Ave, Lawrence, KS, 66047, USA
| | - C Russell Middaugh
- Department of Pharmaceutical Chemistry, Macromolecule and Vaccine Stabilization Center, University of Kansas, 2095 Constant Ave, Lawrence, KS, 66047, USA
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38
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Jain NK, Sahni N, Kumru OS, Joshi SB, Volkin DB, Russell Middaugh C. Formulation and stabilization of recombinant protein based virus-like particle vaccines. Adv Drug Deliv Rev 2015; 93:42-55. [PMID: 25451136 DOI: 10.1016/j.addr.2014.10.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 10/15/2014] [Accepted: 10/18/2014] [Indexed: 02/06/2023]
Abstract
Vaccine formulation development has traditionally focused on improving antigen storage stability and compatibility with conventional adjuvants. More recently, it has also provided an opportunity to modify the interaction and presentation of an antigen/adjuvant to the immune system to better stimulate the desired immune responses for maximal efficacy. In the last decade, there has been a paradigm shift in vaccine antigen and formulation design involving an improved physical understanding of antigens and a better understanding of the immune system. In addition, the discovery of novel adjuvants and delivery systems promises to further improve the design of new, more effective vaccines. Here we describe some of the fundamental aspects of formulation design applicable to virus-like-particle based vaccine antigens (VLPs). Case studies are presented for commercially approved VLP vaccines as well as some investigational VLP vaccine candidates. An emphasis is placed on the biophysical analysis of vaccines to facilitate formulation and stabilization of these particulate antigens.
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39
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Lee YN, Kim MC, Lee YT, Hwang HS, Lee J, Kim C, Kang SM. Cross Protection against Influenza A Virus by Yeast-Expressed Heterologous Tandem Repeat M2 Extracellular Proteins. PLoS One 2015; 10:e0137822. [PMID: 26366729 PMCID: PMC4569442 DOI: 10.1371/journal.pone.0137822] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 08/24/2015] [Indexed: 01/08/2023] Open
Abstract
The influenza M2 ectodomain (M2e) is well conserved across human influenza A subtypes, but there are few residue changes among avian and swine origin influenza A viruses. We expressed a tandem repeat construct of heterologous M2e sequences (M2e5x) derived from human, swine, and avian origin influenza A viruses using the yeast expression system. Intramuscular immunization of mice with AS04-adjuvanted M2e5x protein vaccines was effective in inducing M2e-specific antibodies reactive to M2e peptide and native M2 proteins on the infected cells with human, swine, or avian influenza virus, mucosal and systemic memory cellular immune responses, and cross-protection against H3N2 virus. Importantly, M2e5x immune sera were found to confer protection against different subtypes of H1N1 and H5N1 influenza A viruses in naïve mice. Also, M2e5x-immune complexes of virus-infected cells stimulated macrophages to secrete cytokines via Fc receptors, indicating a possible mechanism of protection. The present study provides evidence that M2e5x proteins produced in yeast cells could be developed as a potential universal influenza vaccine.
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Affiliation(s)
- Yu-Na Lee
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia 30303, United States of America
| | - Min-Chul Kim
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia 30303, United States of America
- Animal and Plant Quarantine Agency, Anyang, Gyeonggi-do, South Korea
| | - Young-Tae Lee
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia 30303, United States of America
| | - Hye Suk Hwang
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia 30303, United States of America
| | - Jongsang Lee
- BEAMS Biotechnology Co. Ltd., Seongnam, Gyeonggi-do, South Korea
| | - Cheol Kim
- BEAMS Biotechnology Co. Ltd., Seongnam, Gyeonggi-do, South Korea
| | - Sang-Moo Kang
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia 30303, United States of America
- * E-mail:
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Lee YN, Kim MC, Lee YT, Kim YJ, Lee J, Kim C, Ha SH, Kang SM. Co-immunization with tandem repeat heterologous M2 extracellular proteins overcomes strain-specific protection of split vaccine against influenza A virus. Antiviral Res 2015; 122:82-90. [PMID: 26248203 DOI: 10.1016/j.antiviral.2015.08.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 07/29/2015] [Accepted: 08/03/2015] [Indexed: 01/28/2023]
Abstract
Current influenza vaccines are less efficacious against antigenically different influenza A viruses. This study presents an approach to overcome strain-specific protection, using a strategy of co-immunization with seasonal H3N2 split vaccine and yeast-expressed soluble proteins of a tandem repeat containing heterologous influenza M2 ectodomains (M2e5x). Co-immunization with both vaccines in mice was superior to either vaccine alone in inducing cross protection against heterologous H3N2 virus by raising M2e-specific humoral and cellular immune responses toward a T-helper type 1 profile inducing IgG2a isotype antibodies as well as interferon-γ-producing cells in systemic and mucosal sites. In addition, co-immunization sera were found to confer cross-protection against different subtypes of H1N1 and H5N1 influenza A viruses in naïve mice. A mechanistic study provides evidence that activation of dendritic cells by co-stimulation with M2e5x and split vaccine was associated with the proliferation of CD4(+) T cells. Our results suggest that a strategy of co-immunization with seasonal split and M2e5x protein vaccines could be a promising approach for overcoming the limitation of strain-specific protection by current influenza vaccination.
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Affiliation(s)
- Yu-Na Lee
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Min-Chul Kim
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA; Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi-do 430-757, Republic of Korea
| | - Young-Tae Lee
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Yu-Jin Kim
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Jongsang Lee
- BEAMS Biotechnology Co. Ltd., Seongnam, Gyeonggi-do, Republic of Korea
| | - Cheol Kim
- BEAMS Biotechnology Co. Ltd., Seongnam, Gyeonggi-do, Republic of Korea
| | - Suk-Hoon Ha
- Mogam Biotechnology Research Institute, Yongin, Gyeonggi-do, Republic of Korea
| | - Sang-Moo Kang
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA.
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Miller ML, Aarde SM, Moreno AY, Creehan KM, Janda KD, Taffe MA. Effects of active anti-methamphetamine vaccination on intravenous self-administration in rats. Drug Alcohol Depend 2015; 153:29-36. [PMID: 26118833 PMCID: PMC4509945 DOI: 10.1016/j.drugalcdep.2015.06.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 06/07/2015] [Accepted: 06/07/2015] [Indexed: 01/05/2023]
Abstract
BACKGROUND d-Methamphetamine (METH) addiction is a serious public health concern for which successful treatment remains elusive. Immunopharmacotherapy has been shown to attenuate locomotor and thermoregulatory effects of METH. The current study investigated whether active vaccination against METH could alter intravenous METH self-administration in rats. METHODS Male Sprague-Dawley rats (Experiment 1: N=24; Experiment 2: N=18) were vaccinated with either a control keyhole-limpet hemocyanin conjugate vaccine (KLH) or a candidate anti-METH vaccine (MH6-KLH) or. Effects of vaccination on the acquisition of METH self-administration under two dose conditions (0.05, 0.1mg/kg/inf) and post-acquisition dose-substitution (0, 0.01, 0.05, 0.20mg/kg/inf, Experiment 1; 0.01, 0.05, 0.10, 0.15mg/kg/inf, Experiment 2) during steady-state responding were investigated. Plasma METH concentrations were determined 30min after an acute challenge dose of 3.2mg/kg METH. RESULTS Active vaccination inhibited the acquisition of METH self-administration under the 0.1mg/kg/inf dose condition, with 66% of the MH6-KLH-vaccinated rats compared to 100% of the controls reaching criteria, and produced transient and dose-dependent effects on self-administration during the maintenance phase. Under the 0.05mg/kg/inf dose condition, MH6-KLH-vaccinated rats initially self-administered more METH than controls, but then self-administration decreased across the acquisition phase relative to controls; a subsequent dose-response assessment confirmed that MH6-KLH-vaccinated rats failed to acquire METH self-administration. Finally, plasma METH concentrations were higher in MH6-KLH-vaccinated rats compared to controls after an acute METH challenge, and these were positively correlated with antibody titers. CONCLUSIONS These data demonstrate that active immunopharmacotherapy for METH attenuates the acquisition of METH self-administration.
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Affiliation(s)
- ML Miller
- Committee on the Neurobiology of Addictive Disorders; The Scripps Research Institute, La Jolla, CA, USA
| | - SM Aarde
- Committee on the Neurobiology of Addictive Disorders; The Scripps Research Institute, La Jolla, CA, USA
| | - AY Moreno
- Departments of Chemistry, Immunology and Microbial Science, Skaggs Institute for Chemical Biology; The Scripps Research Institute, La Jolla, CA, USA
| | - KM Creehan
- Committee on the Neurobiology of Addictive Disorders; The Scripps Research Institute, La Jolla, CA, USA
| | - KD Janda
- Departments of Chemistry, Immunology and Microbial Science, Skaggs Institute for Chemical Biology; The Scripps Research Institute, La Jolla, CA, USA
| | - MA Taffe
- Committee on the Neurobiology of Addictive Disorders; The Scripps Research Institute, La Jolla, CA, USA
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Broad spectrum assessment of the epitope fluctuation--Immunogenicity hypothesis. Vaccine 2015; 33:5945-9. [PMID: 26187254 DOI: 10.1016/j.vaccine.2015.06.111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 06/13/2015] [Accepted: 06/29/2015] [Indexed: 11/20/2022]
Abstract
Prediction of immunogenicity is a substantial barrier in vaccine design. Here, a molecular dynamics approach to assessing the immunogenicity of nanoparticles based on structure is presented. Molecular properties of epitopes on nonenveloped viral particles are quantified via a set of metrics. One such metric, epitope fluctuation (and implied flexibility), is shown to be inversely correlated with immunogenicity for each of a broad spectrum of nonenveloped viruses. The molecular metrics and experimentally determined immunogenicities for these viruses are archived in the open-source vaccine computer-aided design database. Results indicate the promise of computer-aided vaccine design to bring greater efficiency to traditional lab-based vaccine discovery approaches.
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Ojha R, Nafady A, Shiddiky MJA, Mason D, Boas JF, Torriero AAJ, Bond AM, Deacon GB, Junk PC. Conditions Favoring the Formation of Monomeric PtIIIDerivatives in the Electrochemical Oxidation oftrans-[PtII{(p-BrC6F4)NCH2CH2NEt2}Cl(py)]. ChemElectroChem 2015. [DOI: 10.1002/celc.201402447] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lin YL, Hu YC, Liang CC, Lin SY, Liang YC, Yuan HP, Chiang BL. Enterovirus-71 virus-like particles induce the activation and maturation of human monocyte-derived dendritic cells through TLR4 signaling. PLoS One 2014; 9:e111496. [PMID: 25360749 PMCID: PMC4216083 DOI: 10.1371/journal.pone.0111496] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 09/30/2014] [Indexed: 11/18/2022] Open
Abstract
Enterovirus 71 (EV71) causes seasonal epidemics of hand-foot-and-mouth disease and has a high mortality rate among young children. We recently demonstrated potent induction of the humoral and cell-mediated immune response in monkeys immunized with EV71 virus-like particles (VLPs), with a morphology resembling that of infectious EV71 virions but not containing a viral genome, which could potentially be safe as a vaccine for EV71. To elucidate the mechanisms through which EV71 VLPs induce cell-mediated immunity, we studied the immunomodulatory effects of EV71 VLPs on human monocyte-derived dendritic cells (DCs), which bind to and incorporate EV71 VLPs. DC treatment with EV71 VLPs enhanced the expression of CD80, CD86, CD83, CD40, CD54, and HLA-DR on the cell surface; increased the production of interleukin (IL)-12 p40, IL-12 p70, and IL-10 by DCs; and suppressed the capacity of DCs for endocytosis. Treatment with EV71 VLPs also enhanced the ability of DCs to stimulate naïve T cells and induced secretion of interferon (IFN)-γ by T cells and Th1 cell responses. Neutralization with antibodies against Toll-like receptor (TLR) 4 suppressed the capacity of EV71 VLPs to induce the production of IL-12 p40, IL-12 p70, and IL-10 by DCs and inhibited EV71 VLPs binding to DCs. Our study findings clarified the important role for TLR4 signaling in DCs in response to EV71 VLPs and showed that EV71 VLPs induced inhibitor of kappaB alpha (IκBα) degradation and nuclear factor of kappaB (NF-κB) activation.
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Affiliation(s)
- Yu-Li Lin
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Chen Hu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Cheng-Chao Liang
- Department of Internal Medicine, Far Eastern Memorial Hospital, Taipei, Taiwan
| | - Shih-Yeh Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Chih Liang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Hui-Ping Yuan
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
| | - Bor-Luen Chiang
- Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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45
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Kim KS, Park SA, Ko KN, Yi S, Cho YJ. Current status of human papillomavirus vaccines. Clin Exp Vaccine Res 2014; 3:168-75. [PMID: 25003090 PMCID: PMC4083069 DOI: 10.7774/cevr.2014.3.2.168] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/16/2014] [Accepted: 05/20/2014] [Indexed: 12/13/2022] Open
Abstract
Cervical cancer is a malignant neoplasm arising from cells that originate in the cervix uteri. It is the second most prevalent cancer among women. It can have several causes; an infection with some type of human papillomavirus (HPV) is the greatest risk factor for cervical cancer. Over 100 types of HPVs have been identified, and more than 40 types of HPVs are typically transmitted through sexual contact and infect the anogenital region. Among these, a number of HPVs types, containing types 16 and 18, are classified as "high-risk" HPVs that can cause cervical cancer. The HPVs vaccine prevents infection with certain species of HPVs associated with the development of cervical cancer, genital warts, and some less common cancers. Two HPVs vaccines are currently on the global market: quadrivalent HPVs vaccine and bivalent HPV vaccine that use virus-like particles as a vaccine antigen. This review discusses the current status of HPVs vaccines on the global market, clinical trials, and the future of HPVs vaccine development.
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Development of neutralizing monoclonal antibodies for oncogenic human papillomavirus types 31, 33, 45, 52, and 58. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2014; 21:587-93. [PMID: 24574536 DOI: 10.1128/cvi.00773-13] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Human papillomavirus (HPV) is the etiological agent for all cervical cancers, a significant number of other anogenital cancers, and a growing number of head and neck cancers. Two licensed vaccines offer protection against the most prevalent oncogenic types, 16 and 18, responsible for approximately 70% of cervical cancer cases worldwide and one of these also offers protection against types 6 and 11, responsible for 90% of genital warts. The vaccines are comprised of recombinantly expressed major capsid proteins that self-assemble into virus-like particles (VLPs) and prevent infection by eliciting neutralizing antibodies. Adding the other frequently identified oncogenic types 31, 33, 45, 52, and 58 to a vaccine would increase the coverage against HPV-induced cancers to approximately 90%. We describe the generation and characterization of panels of monoclonal antibodies to these five additional oncogenic HPV types, and the selection of antibody pairs that were high affinity and type specific and recognized conformation-dependent neutralizing epitopes. Such characteristics make these antibodies useful tools for monitoring the production and potency of a prototype vaccine as well as monitoring vaccine-induced immune responses in the clinic.
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Kavitha T, Kang IK, Park SY. Poly(acrylic acid)-grafted graphene oxide as an intracellular protein carrier. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:402-409. [PMID: 24377671 DOI: 10.1021/la404337d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A pH-sensitive poly(acrylic acid)-grafted graphene oxide (GO-PAA) nanocarrier was synthesized by in situ atom transfer radical polymerization to allow the oral delivery of hydrophilic macromolecular proteins in their active forms to specific cells or organs. The synthesis, morphology, and physiochemical properties of GO-PAA were examined. A model protein, bovine serum albumin (BSA) labeled with fluorescein isothiocyanate (FITC) (BSAFITC), was loaded onto GO-PAA through noncovalent interactions and its release was arrested at acidic pH similar to stomach, whereas at pH similar to intestine it was reduced, which paves way for site specific delivery without its degradation in the gastrointestinal tract. Confocal laser microscopy showed that the BSAFITC-loaded GO-PAA was internalized by KB cells by endocytosis and released into cytoplasm. Thus the GO-PAA as a transmembrane transporter is a new class of drug transporters with potential protein delivery applications.
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Affiliation(s)
- Thangavelu Kavitha
- Department of Polymer Science and Engineering, Kyungpook National University , Daegu 702-701, Republic of Korea
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Curigliano G, Spitaleri G, Dettori M, Locatelli M, Scarano E, Goldhirsch A. Vaccine immunotherapy in breast cancer treatment: promising, but still early. Expert Rev Anticancer Ther 2014; 7:1225-41. [PMID: 17892423 DOI: 10.1586/14737140.7.9.1225] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cancer vaccine-based immunotherapy should potentiate immunosurveillance function, preventing and protecting against growing tumors. Tumor cells usually activate the immune system, including T lymphocytes and natural killer cells, which are able to eliminate the transformed cells. Immunosubversion mechanisms related to tumor cells antigenic immunoediting induces mechanisms of tolerance and immunoescape. This condition impairs not only host-generated immunosurveillance, but also attempts to harness the immune response for therapeutic purposes. Most trials evaluating breast cancer vaccines have been carried out in patients in the metastatic and adjuvant setting. The aim of this review is to analyze the activity of vaccination strategies in current clinical trials. We summarize the differential approaches, protein-based and cell-based vaccines, focusing on vaccines targeting HER2/neu protein. Another focus of the review is to provide the reader with future challenges in the field, taking into account both the immunological and clinical aspects to better target the goal.
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Affiliation(s)
- Giuseppe Curigliano
- European Institute of Oncology, Department of Medicine, Division of Medical Oncology, Via Ripamonti 435, 20141 Milan, Italy.
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Lipiec E, Czapla J, Szlachetko J, Kayser Y, Kwiatek W, Wood B, Deacon GB, Sá J. Novel in situ methodology to observe the interactions of chemotherapeutical Pt drugs with DNA under physiological conditions. Dalton Trans 2014; 43:13839-44. [DOI: 10.1039/c4dt00861h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The binding of the antitumor drug cisplatin with DNA was determined by means of in situ resonant inelastic X-ray scattering (RIXS) spectroscopy.
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Affiliation(s)
- Ewelina Lipiec
- The Henryk Niewodniczanski Institute of Nuclear Physics
- 31-342 Kraków, Poland
| | - Joanna Czapla
- The Henryk Niewodniczanski Institute of Nuclear Physics
- 31-342 Kraków, Poland
| | - Jakub Szlachetko
- Paul Scherrer Institute (PSI)
- 5232 Villigen, Switzerland
- Institute of Physics
- Jan Kochanowski University in Kielce
- 25-406 Kielce, Poland
| | - Yves Kayser
- Paul Scherrer Institute (PSI)
- 5232 Villigen, Switzerland
| | - Wojciech Kwiatek
- The Henryk Niewodniczanski Institute of Nuclear Physics
- 31-342 Kraków, Poland
| | - Bayden Wood
- Centre for Biospectroscopy
- School of Chemistry
- Monash University
- Victoria, Australia
| | - Glen B. Deacon
- School of Chemistry
- Faculty of Science
- Monash University
- Victoria, Australia
| | - Jacinto Sá
- Paul Scherrer Institute (PSI)
- 5232 Villigen, Switzerland
- Institute of Physical Chemistry
- Polish Academy of Sciences
- Warsaw, Poland
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Zhao Q, Li S, Yu H, Xia N, Modis Y. Virus-like particle-based human vaccines: quality assessment based on structural and functional properties. Trends Biotechnol 2013; 31:654-63. [PMID: 24125746 DOI: 10.1016/j.tibtech.2013.09.002] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 08/20/2013] [Accepted: 09/03/2013] [Indexed: 12/18/2022]
Abstract
Human vaccines against three viruses use recombinant virus-like particles (VLPs) as the antigen: hepatitis B virus, human papillomavirus, and hepatitis E virus. VLPs are excellent prophylactic vaccine antigens because they are self-assembling bionanoparticles (20 to 60 nm in diameter) that expose multiple epitopes on their surface and faithfully mimic the native virions. Here we summarize the long journey of these vaccines from bench to patients. The physical properties and structural features of each recombinant VLP vaccine are described. With the recent licensure of Hecolin against hepatitis E virus adding a third disease indication to prophylactic VLP-based vaccines, we review how the crucial quality attributes of VLP-based human vaccines against all three disease indications were assessed, controlled, and improved during bioprocessing through an array of structural and functional analyses.
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Affiliation(s)
- Qinjian Zhao
- National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Public Health, Xiamen University, Xiamen, Fujian 361102, People's Republic of China.
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