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Gül C, Gül A, Karakavuk T, Erkunt Alak S, Karakavuk M, Can H, Değirmenci Döşkaya A, Yavuz İ, Kaplan S, Erel Akbaba G, Şen Karaman D, Akbaba H, Efe Köseoğlu A, Ovayurt T, Yüksel Gürüz A, Ün C, Kantarcı AG, Döşkaya M. A novel DNA vaccine encoding the SRS13 protein administered by electroporation confers protection against chronic toxoplasmosis. Vaccine 2024:S0264-410X(24)00706-0. [PMID: 38880692 DOI: 10.1016/j.vaccine.2024.06.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/30/2024] [Accepted: 06/11/2024] [Indexed: 06/18/2024]
Abstract
Toxoplasma gondii is an obligate intracellular parasite that can infect a variety of mammals including humans and causes toxoplasmosis. Unfortunately, a protective and safe vaccine against toxoplasmosis hasn't been developed yet. In this study, we developed a DNA vaccine encoding the SRS13 protein and immunized BALB/c mice thrice with pVAX1-SRS13 through the intramuscular route (IM) or intradermally using an electroporation device (ID + EP). The immunogenicity of pVAX1-SRS13 was analyzed by ELISA, Western blot, cytokine ELISA, and flow cytometry. The protective efficacy of the pVAX1-SRS13 was investigated by challenging mice orally with T. gondii PRU strain tissue cysts. The results revealed that pVAX1-SRS13 administered through IM or ID + EP routes induced high level of anti-SRS13 IgG antibody responses (P = 0.0037 and P < 0.0001). The IFN-γ level elicited by the pVAX1-SRS13 (ID + EP) was significantly higher compared to the control group (P = 0.00159). In mice administered with pVAX1-SRS13 (ID + EP), CD8+ cells secreting IFN-γ was significantly higher compared to pVAX1-SRS13 (IM) (P = 0.0035) and the control group (P = 0.0068). Mice vaccinated with the SRS13 DNA vaccine did not induce significant IL-4 level. Moreover, a significant reduction in the number of tissue cysts and the load of T. gondii DNA was detected in brains of mice administered with pVAX1-SRS13 through ID + EP and IM routes compared to controls. In conclusion, the SRS13 DNA vaccine was found to be highly immunogenic and confers strong protection against chronic toxoplasmosis.
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Affiliation(s)
- Ceren Gül
- Ege University, Graduate School of Natural and Applied Sciences, Department of Biotechnology, İzmir, Türkiye; Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye
| | - Aytül Gül
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Faculty of Engineering, Department of Bioengineering, İzmir, Türkiye
| | - Tuğba Karakavuk
- Ege University, Graduate School of Natural and Applied Sciences, Department of Biotechnology, İzmir, Türkiye; Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye
| | - Sedef Erkunt Alak
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Faculty of Science, Department of Biology Molecular Biology Section, İzmir, Türkiye
| | - Muhammet Karakavuk
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Ödemiş Vocational School, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye
| | - Hüseyin Can
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Faculty of Science, Department of Biology Molecular Biology Section, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye
| | - Aysu Değirmenci Döşkaya
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye; Ege University, Faculty of Medicine, Department of Parasitology, İzmir, Türkiye
| | - İrem Yavuz
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye
| | - Seren Kaplan
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye
| | - Gülşah Erel Akbaba
- İzmir Katip Çelebi University, Faculty of Pharmacy, Department of Pharmaceutical Biotechnology, İzmir, Türkiye
| | - Didem Şen Karaman
- İzmir Katip Çelebi University, Faculty of Engineering and Architecture, Department of Biomedical Engineering, İzmir, Türkiye
| | - Hasan Akbaba
- Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye; Ege University, Faculty of Pharmacy, Department of Pharmaceutical Biotechnology, İzmir, Türkiye
| | - Ahmet Efe Köseoğlu
- Ege University, Faculty of Science, Department of Biology Molecular Biology Section, İzmir, Türkiye; Duisburg-Essen University, Faculty of Chemistry, Department of Environmental Microbiology and Biotechnology, Essen, Germany
| | - Tolga Ovayurt
- İzmir Katip Çelebi University, Graduate School of Natural and Applied Sciences, Department of Biomedical Technology, İzmir, Türkiye
| | - Adnan Yüksel Gürüz
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye; Ege University, Faculty of Medicine, Department of Parasitology, İzmir, Türkiye
| | - Cemal Ün
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Faculty of Science, Department of Biology Molecular Biology Section, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye
| | - Ayşe Gülten Kantarcı
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye; Ege University, Faculty of Pharmacy, Department of Pharmaceutical Biotechnology, İzmir, Türkiye
| | - Mert Döşkaya
- Ege University, Vaccine Development Application and Research Center, İzmir, Türkiye; Ege University, Institute of Health Sciences, Department of Vaccine Studies, İzmir, Türkiye; Ege University, Faculty of Medicine, Department of Parasitology, İzmir, Türkiye
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2
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Gül A, Erkunt Alak S, Can H, Karakavuk M, Korukluoğlu G, Altaş AB, Gül C, Karakavuk T, Köseoğlu AE, Ülbeği Polat H, Yazıcı Malkoçoğlu H, Taş Ekiz A, Abacı İ, Aksoy Ö, Enül H, Adıay C, Uzar S, Saraç F, Ün C, Gürüz AY, Kantarcı AG, Akbaba H, Erel Akbaba G, Yılmaz H, Değirmenci Döşkaya A, Taşbakan M, Pullukçu H, Karasulu E, Tekin Ş, Döşkaya M. Immunogenicity and protection efficacy of a COVID-19 DNA vaccine encoding spike protein with D614G mutation and optimization of large-scale DNA vaccine production. Sci Rep 2024; 14:13865. [PMID: 38879684 PMCID: PMC11180131 DOI: 10.1038/s41598-024-64690-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 06/12/2024] [Indexed: 06/19/2024] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 had devastating consequences for human health. Despite the introduction of several vaccines, COVID-19 continues to pose a serious health risk due to emerging variants of concern. DNA vaccines gained importance during the pandemic due to their advantages such as induction of both arms of immune response, rapid development, stability, and safety profiles. Here, we report the immunogenicity and protective efficacy of a DNA vaccine encoding spike protein with D614G mutation (named pcoSpikeD614G) and define a large-scale production process. According to the in vitro studies, pcoSpikeD614G expressed abundant spike protein in HEK293T cells. After the administration of pcoSpikeD614G to BALB/c mice through intramuscular (IM) route and intradermal route using an electroporation device (ID + EP), it induced high level of anti-S1 IgG and neutralizing antibodies (P < 0.0001), strong Th1-biased immune response as shown by IgG2a polarization (P < 0.01), increase in IFN-γ levels (P < 0.01), and increment in the ratio of IFN-γ secreting CD4+ (3.78-10.19%) and CD8+ (5.24-12.51%) T cells. Challenging K18-hACE2 transgenic mice showed that pcoSpikeD614G administered through IM and ID + EP routes conferred 90-100% protection and there was no sign of pneumonia. Subsequently, pcoSpikeD614G was evaluated as a promising DNA vaccine candidate and scale-up studies were performed. Accordingly, a large-scale production process was described, including a 36 h fermentation process of E. coli DH5α cells containing pcoSpikeD614G resulting in a wet cell weight of 242 g/L and a three-step chromatography for purification of the pcoSpikeD614G DNA vaccine.
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MESH Headings
- Vaccines, DNA/immunology
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/genetics
- Spike Glycoprotein, Coronavirus/immunology
- Spike Glycoprotein, Coronavirus/genetics
- Animals
- Humans
- SARS-CoV-2/immunology
- SARS-CoV-2/genetics
- Mice
- COVID-19/prevention & control
- COVID-19/immunology
- HEK293 Cells
- Mice, Inbred BALB C
- COVID-19 Vaccines/immunology
- COVID-19 Vaccines/administration & dosage
- Mutation
- Antibodies, Viral/immunology
- Antibodies, Viral/blood
- Antibodies, Neutralizing/immunology
- Antibodies, Neutralizing/blood
- Female
- Immunogenicity, Vaccine
- Immunoglobulin G/blood
- Immunoglobulin G/immunology
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Affiliation(s)
- Aytül Gül
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Bioengineering, Faculty of Engineering, Ege University, İzmir, Türkiye
- Department of Bioengineering, Graduate School of Natural and Applied Sciences, Ege University, İzmir, Türkiye
| | - Sedef Erkunt Alak
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Biology, Molecular Biology Section, Faculty of Science, Ege University, İzmir, Türkiye
| | - Hüseyin Can
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Biology, Molecular Biology Section, Faculty of Science, Ege University, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
| | - Muhammet Karakavuk
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Ödemiş Vocational School, Ege University, İzmir, Türkiye
| | - Gülay Korukluoğlu
- Republic of Türkiye, General Directorate of Public Health, Ministry of Health, National Virology Reference Central Laboratory, Ankara, Türkiye
- Department of Medical Microbiology, Ankara Bilkent City Hospital, University of Health Sciences, Ankara, Türkiye
| | - Ayşe Başak Altaş
- Republic of Türkiye, General Directorate of Public Health, Ministry of Health, National Virology Reference Central Laboratory, Ankara, Türkiye
| | - Ceren Gül
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, İzmir, Türkiye
| | - Tuğba Karakavuk
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, İzmir, Türkiye
| | - Ahmet Efe Köseoğlu
- Department of Biology, Molecular Biology Section, Faculty of Science, Ege University, İzmir, Türkiye
- Department of Environmental Microbiology and Biotechnology, Faculty of Chemistry, Duisburg-Essen University, Essen, Germany
| | - Hivda Ülbeği Polat
- TÜBİTAK Marmara Research Center, Vice Presidency of Life Sciences, Kocaeli, Türkiye
| | | | - Arzu Taş Ekiz
- TÜBİTAK Marmara Research Center, Vice Presidency of Life Sciences, Kocaeli, Türkiye
| | - İrem Abacı
- TÜBİTAK Marmara Research Center, Vice Presidency of Life Sciences, Kocaeli, Türkiye
| | - Özge Aksoy
- TÜBİTAK Marmara Research Center, Vice Presidency of Life Sciences, Kocaeli, Türkiye
| | - Hakan Enül
- Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Cumhur Adıay
- Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Serdar Uzar
- Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Fahriye Saraç
- Pendik Veterinary Control Institute, İstanbul, Türkiye
| | - Cemal Ün
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Biology, Molecular Biology Section, Faculty of Science, Ege University, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
| | - Adnan Yüksel Gürüz
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Parasitology, Faculty of Medicine, Ege University, İzmir, Türkiye
| | - Ayşe Gülten Kantarcı
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Ege University, İzmir, Türkiye
| | - Hasan Akbaba
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Ege University, İzmir, Türkiye
| | - Gülşah Erel Akbaba
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, İzmir Katip Çelebi University, İzmir, Türkiye
| | - Habibe Yılmaz
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Trakya University, Edirne, Türkiye
| | - Aysu Değirmenci Döşkaya
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Parasitology, Faculty of Medicine, Ege University, İzmir, Türkiye
| | - Meltem Taşbakan
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Infectious Diseases, Faculty of Medicine, Ege University, İzmir, Türkiye
| | - Hüsnü Pullukçu
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye
- Department of Infectious Diseases, Faculty of Medicine, Ege University, İzmir, Türkiye
| | - Ercüment Karasulu
- Ege University Research and Application Center of Drug Development and Pharmacokinetics, İzmir, Türkiye
| | - Şaban Tekin
- Department of Basic Medical Sciences, Medical Biology, Faculty of Medicine, University of Health Sciences, İstanbul, Türkiye
| | - Mert Döşkaya
- Vaccine Development Application and Research Center, Ege University, 35100, İzmir, Türkiye.
- Department of Vaccine Studies, Institute of Health Sciences, Ege University, İzmir, Türkiye.
- Department of Parasitology, Faculty of Medicine, Ege University, İzmir, Türkiye.
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3
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Litvinova VR, Rudometov AP, Rudometova NB, Kisakov DN, Borgoyakova MB, Kisakova LA, Starostina EV, Fando AA, Yakovlev VA, Tigeeva EV, Ivanova KI, Gudymo AS, Ilyicheva TN, Marchenko VY, Sergeev AA, Ilyichev AA, Karpenko LI. DNA Vaccine Encoding a Modified Hemagglutinin Trimer of Avian Influenza A Virus H5N8 Protects Mice from Viral Challenge. Vaccines (Basel) 2024; 12:538. [PMID: 38793789 PMCID: PMC11126123 DOI: 10.3390/vaccines12050538] [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: 04/02/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
The development of a safe and effective vaccine against avian influenza A virus (AIV) H5N8 is relevant due to the widespread distribution of this virus in the bird population and the existing potential risk of human infection, which can lead to significant public health concerns. Here, we developed an experimental pVAX-H5 DNA vaccine encoding a modified trimer of AIV H5N8 hemagglutinin. Immunization of BALB/c mice with pVAX-H5 using jet injection elicited high titer antibody response (the average titer in ELISA was 1 × 105), and generated a high level of neutralizing antibodies against H5N8 and T-cell response, as determined by ELISpot analysis. Both liquid and lyophilized forms of pVAX-H5 DNA vaccine provided 100% protection of immunized mice against lethal challenge with influenza A virus A/turkey/Stavropol/320-01/2020 (H5N8). The results obtained indicate that pVAX-H5 has good opportunities as a vaccine candidate against the influenza A virus (H5N8).
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Affiliation(s)
| | - Andrey P. Rudometov
- Federal Budgetary Research Institution State Research Center of Virology and Biotechnology «Vector», Rospotrebnadzor, Koltsovo 630559, Novosibirsk Region, Russia; (V.R.L.); (N.B.R.); (D.N.K.); (M.B.B.); (L.A.K.); (E.V.S.); (A.A.F.); (E.V.T.); (K.I.I.); (A.S.G.); (T.N.I.); (V.Y.M.); (A.A.S.); (A.A.I.); (L.I.K.)
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4
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Eskandari A, Leow TC, Rahman MBA, Oslan SN. Advances in Therapeutic Cancer Vaccines, Their Obstacles, and Prospects Toward Tumor Immunotherapy. Mol Biotechnol 2024:10.1007/s12033-024-01144-3. [PMID: 38625508 DOI: 10.1007/s12033-024-01144-3] [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: 01/26/2024] [Accepted: 03/15/2024] [Indexed: 04/17/2024]
Abstract
Over the past few decades, cancer immunotherapy has experienced a significant revolution due to the advancements in immune checkpoint inhibitors (ICIs) and adoptive cell therapies (ACTs), along with their regulatory approvals. In recent times, there has been hope in the effectiveness of cancer vaccines for therapy as they have been able to stimulate de novo T-cell reactions against tumor antigens. These tumor antigens include both tumor-associated antigen (TAA) and tumor-specific antigen (TSA). Nevertheless, the constant quest to fully achieve these abilities persists. Therefore, this review offers a broad perspective on the existing status of cancer immunizations. Cancer vaccine design has been revolutionized due to the advancements made in antigen selection, the development of antigen delivery systems, and a deeper understanding of the strategic intricacies involved in effective antigen presentation. In addition, this review addresses the present condition of clinical tests and deliberates on their approaches, with a particular emphasis on the immunogenicity specific to tumors and the evaluation of effectiveness against tumors. Nevertheless, the ongoing clinical endeavors to create cancer vaccines have failed to produce remarkable clinical results as a result of substantial obstacles, such as the suppression of the tumor immune microenvironment, the identification of suitable candidates, the assessment of immune responses, and the acceleration of vaccine production. Hence, there are possibilities for the industry to overcome challenges and enhance patient results in the coming years. This can be achieved by recognizing the intricate nature of clinical issues and continuously working toward surpassing existing limitations.
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Affiliation(s)
- Azadeh Eskandari
- Enzyme and Microbial Technology Research Centre, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Thean Chor Leow
- Enzyme and Microbial Technology Research Centre, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Enzyme Technology and X-ray Crystallography Laboratory, VacBio 5, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | | | - Siti Nurbaya Oslan
- Enzyme and Microbial Technology Research Centre, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Enzyme Technology and X-ray Crystallography Laboratory, VacBio 5, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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5
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Petro-Turnquist E, Pekarek MJ, Weaver EA. Swine influenza A virus: challenges and novel vaccine strategies. Front Cell Infect Microbiol 2024; 14:1336013. [PMID: 38633745 PMCID: PMC11021629 DOI: 10.3389/fcimb.2024.1336013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/21/2024] [Indexed: 04/19/2024] Open
Abstract
Swine Influenza A Virus (IAV-S) imposes a significant impact on the pork industry and has been deemed a significant threat to global public health due to its zoonotic potential. The most effective method of preventing IAV-S is vaccination. While there are tremendous efforts to control and prevent IAV-S in vulnerable swine populations, there are considerable challenges in developing a broadly protective vaccine against IAV-S. These challenges include the consistent diversification of IAV-S, increasing the strength and breadth of adaptive immune responses elicited by vaccination, interfering maternal antibody responses, and the induction of vaccine-associated enhanced respiratory disease after vaccination. Current vaccination strategies are often not updated frequently enough to address the continuously evolving nature of IAV-S, fail to induce broadly cross-reactive responses, are susceptible to interference, may enhance respiratory disease, and can be expensive to produce. Here, we review the challenges and current status of universal IAV-S vaccine research. We also detail the current standard of licensed vaccines and their limitations in the field. Finally, we review recently described novel vaccines and vaccine platforms that may improve upon current methods of IAV-S control.
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Affiliation(s)
- Erika Petro-Turnquist
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE, United States
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Matthew J. Pekarek
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE, United States
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Eric A. Weaver
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE, United States
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, United States
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6
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Sood S, Matar MM, Kim J, Kinsella M, Rayavara K, Signer O, Henderson J, Rogers J, Chawla B, Narvaez B, Van Ry A, Kar S, Arnold A, Rice JS, Smith AM, Su D, Sparks J, Le Goff C, Boyer JD, Anwer K. Strong immunogenicity & protection in mice with PlaCCine: A COVID-19 DNA vaccine formulated with a functional polymer. Vaccine 2024; 42:1300-1310. [PMID: 38302336 DOI: 10.1016/j.vaccine.2024.01.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/30/2023] [Accepted: 01/20/2024] [Indexed: 02/03/2024]
Abstract
DNA- based vaccines have demonstrated the potential as a safe and effective modality. PlaCCine, a DNA-based vaccine approach described subsequently relies on a synthetic DNA delivery system and is independent of virus or device. The synthetic functionalized polymer combined with DNA demonstrated stability over 12 months at 4C and for one month at 25C. Transfection efficiency compared to naked DNA increased by 5-15-fold in murine skeletal muscle. Studies of DNA vaccines expressing spike proteins from variants D614G (pVAC15), Delta (pVAC16), or a D614G + Delta combination (pVAC17) were conducted. Mice immunized intramuscular injection (IM) with pVAC15, pVAC16 or pVAC17 formulated with functionalized polymer and adjuvant resulted in induction of spike-specific humoral and cellular responses. Antibody responses were observed after one immunization. And endpoint IgG titers increased to greater than 1x 105 two weeks after the second injection. Neutralizing antibodies as determined by a pseudovirus competition assay were observed following vaccination with pVAC15, pVAC16 or pVAC17. Spike specific T cell immune responses were also observed following vaccination and flow cytometry analysis demonstrated the cellular immune responses included both CD4 and CD8 spike specific T cells. The immune responses in vaccinated mice were maintained for up to 14 months after vaccination. In an immunization and challenge study of K18 hACE2 transgenic mice pVAC15, pVAC16 and pVAC17 induced immune responses lead to decreased lung viral loads by greater than 90 % along with improved clinical score. These findings suggest that PlaCCine DNA vaccines are effective and stable and further development against emerging SARS-CoV-2 variants is warranted.
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Affiliation(s)
| | | | - Jessica Kim
- Imunon Inc., Lawrenceville, NJ, United States
| | | | | | | | | | | | | | | | | | | | | | | | | | - Daishui Su
- Imunon Inc., Lawrenceville, NJ, United States
| | - Jeff Sparks
- Imunon Inc., Lawrenceville, NJ, United States
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7
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Olymon K, Yadav M, Teronpi V, Kumar A. Unravelling the genomic secrets of bacterial fish pathogens: a roadmap to aquaculture sustainability. Mol Biol Rep 2024; 51:364. [PMID: 38407655 DOI: 10.1007/s11033-024-09331-w] [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: 10/24/2023] [Accepted: 02/07/2024] [Indexed: 02/27/2024]
Abstract
In the field of aquaculture, bacterial pathogens pose significant challenges to fish health and production. Advancements in genomic technologies have revolutionized our understanding of bacterial fish pathogens and their interactions with their host species. This review explores the application of genomic approaches in the identification, classification, and characterization of bacterial fish pathogens. Through an extensive analysis of the literature, we have compiled valuable data on 79 bacterial fish pathogens spanning 13 different phyla, encompassing their whole genome sequences. By leveraging high-throughput sequencing techniques, researchers have gained valuable insights into the genomic makeup of these pathogens, enabling a deeper understanding of their virulence factors and mechanisms of host interaction. Furthermore, genomic approaches have facilitated the discovery of potential vaccine and drug targets, opening up new avenues for the development of effective interventions against fish pathogens. Additionally, the utilization of genomics in fish disease resistance and control in aquaculture has shown promising results, enabling the identification of genetic markers associated with disease resistance traits. This review highlights the significant contributions of genomics to the field of fish pathogen research and underscores its potential for improving disease management strategies and enhancing the sustainability of aquaculture practices.
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Affiliation(s)
- Kaushika Olymon
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam, 784028, India
| | - Mohit Yadav
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam, 784028, India
| | - Valentina Teronpi
- Department, of Zoology, Pandit Deendayal Upadhyaya Adarsha Mahavidyalaya, Behali, Biswanath, Assam, 784184, India.
| | - Aditya Kumar
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, Assam, 784028, India.
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8
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Guan X, Pei Y, Song J. DNA-Based Nonviral Gene Therapy─Challenging but Promising. Mol Pharm 2024; 21:427-453. [PMID: 38198640 DOI: 10.1021/acs.molpharmaceut.3c00907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Over the past decades, significant progress has been made in utilizing nucleic acids, including DNA and RNA molecules, for therapeutic purposes. For DNA molecules, although various DNA delivery systems have been established, viral vector systems are the go-to choice for large-scale commercial applications. However, viral systems have certain disadvantages such as immune response, limited payload capacity, insertional mutagenesis and pre-existing immunity. In contrast, nonviral systems are less immunogenic, not size limited, safer, and easier for manufacturing compared with viral systems. What's more, nonviral DNA vectors have demonstrated their capacity to mediate specific protein expression in vivo for diverse therapeutic objectives containing a wide range of diseases such as cancer, rare diseases, neurodegenerative diseases, and infectious diseases, yielding promising therapeutic outcomes. However, exogenous plasmid DNA is prone to degrade and has poor immunogenicity in vivo. Thus, various strategies have been developed: (i) designing novel plasmids with special structures, (ii) optimizing plasmid sequences for higher expression, and (iii) developing more efficient nonviral DNA delivery systems. Based on these strategies, many interesting clinical results have been reported. This Review discusses the development of DNA-based nonviral gene therapy, including novel plasmids, nonviral delivery systems, clinical advances, and prospects. These developments hold great potential for enhancing the efficacy and safety of nonviral gene therapy and expanding its applications in the treatment of various diseases.
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Affiliation(s)
- Xiaocai Guan
- Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yufeng Pei
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
| | - Jie Song
- Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, The Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310022, China
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9
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Pounraj S, Chen S, Ma L, Mazzieri R, Dolcetti R, Rehm BHA. Targeting Tumor Heterogeneity with Neoantigen-Based Cancer Vaccines. Cancer Res 2024; 84:353-363. [PMID: 38055891 DOI: 10.1158/0008-5472.can-23-2042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/24/2023] [Accepted: 12/04/2023] [Indexed: 12/08/2023]
Abstract
Neoantigen-based cancer vaccines have emerged as a promising immunotherapeutic approach to treat cancer. Nevertheless, the high degree of heterogeneity in tumors poses a significant hurdle for developing a vaccine that targets the therapeutically relevant neoantigens capable of effectively stimulating an immune response as each tumor contains numerous unique putative neoantigens. Understanding the complexities of tumor heterogeneity is crucial for the development of personalized neoantigen-based vaccines, which hold the potential to revolutionize cancer treatment and improve patient outcomes. In this review, we discuss recent advancements in the design of neoantigen-based cancer vaccines emphasizing the identification, validation, formulation, and targeting of neoantigens while addressing the challenges posed by tumor heterogeneity. The review highlights the application of cutting-edge approaches, such as single-cell sequencing and artificial intelligence to identify immunogenic neoantigens, while outlining current limitations and proposing future research directions to develop effective neoantigen-based vaccines.
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Affiliation(s)
- Saranya Pounraj
- Centre for Cell Factories and Biopolymers (CCFB), Griffith Institute for Drug Discovery, Griffith University (Nathan Campus), Brisbane, Queensland, Australia
| | - Shuxiong Chen
- Centre for Cell Factories and Biopolymers (CCFB), Griffith Institute for Drug Discovery, Griffith University (Nathan Campus), Brisbane, Queensland, Australia
| | - Linlin Ma
- Centre for Cell Factories and Biopolymers (CCFB), Griffith Institute for Drug Discovery, Griffith University (Nathan Campus), Brisbane, Queensland, Australia
- School of Environment and Science, Griffith University (Nathan Campus), Brisbane, Queensland, Australia
| | - Roberta Mazzieri
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
| | - Riccardo Dolcetti
- Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
- Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, Victoria, Australia
- Department of Microbiology and Immunology, The University of Melbourne, Melbourne, Victoria, Australia
- Faculty of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Bernd H A Rehm
- Centre for Cell Factories and Biopolymers (CCFB), Griffith Institute for Drug Discovery, Griffith University (Nathan Campus), Brisbane, Queensland, Australia
- Menzies Health Institute Queensland (MHIQ), Griffith University (Gold Coast Campus), Queensland, Australia
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10
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Kozak M, Hu J. DNA Vaccines: Their Formulations, Engineering and Delivery. Vaccines (Basel) 2024; 12:71. [PMID: 38250884 PMCID: PMC10820593 DOI: 10.3390/vaccines12010071] [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: 12/13/2023] [Revised: 01/02/2024] [Accepted: 01/08/2024] [Indexed: 01/23/2024] Open
Abstract
The concept of DNA vaccination was introduced in the early 1990s. Since then, advancements in the augmentation of the immunogenicity of DNA vaccines have brought this technology to the market, especially in veterinary medicine, to prevent many diseases. Along with the successful COVID mRNA vaccines, the first DNA vaccine for human use, the Indian ZyCovD vaccine against SARS-CoV-2, was approved in 2021. In the current review, we first give an overview of the DNA vaccine focusing on the science, including adjuvants and delivery methods. We then cover some of the emerging science in the field of DNA vaccines, notably efforts to optimize delivery systems, better engineer delivery apparatuses, identify optimal delivery sites, personalize cancer immunotherapy through DNA vaccination, enhance adjuvant science through gene adjuvants, enhance off-target and heritable immunity through epigenetic modification, and predict epitopes with bioinformatic approaches. We also discuss the major limitations of DNA vaccines and we aim to address many theoretical concerns.
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Affiliation(s)
- Michael Kozak
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
- The Department of Pathology and Laboratory Medicine, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
| | - Jiafen Hu
- The Jake Gittlen Laboratories for Cancer Research, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
- The Department of Pathology and Laboratory Medicine, College of Medicine, Pennsylvania State University, Hershey, PA 17033, USA
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11
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Verma A, Awasthi A. Innovative Strategies to Enhance mRNA Vaccine Delivery and Effectiveness: Mechanisms and Future Outlook. Curr Pharm Des 2024; 30:1049-1059. [PMID: 38551046 DOI: 10.2174/0113816128296588240321072042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 03/11/2024] [Indexed: 06/22/2024]
Abstract
The creation of mRNA vaccines has transformed the area of vaccination and allowed for the production of COVID-19 vaccines with previously unheard-of speed and effectiveness. The development of novel strategies to enhance the delivery and efficiency of mRNA vaccines has been motivated by the ongoing constraints of the present mRNA vaccine delivery systems. In this context, intriguing methods to get beyond these restrictions include lipid nanoparticles, self-amplifying RNA, electroporation, microneedles, and cell-targeted administration. These innovative methods could increase the effectiveness, safety, and use of mRNA vaccines, making them more efficient, effective, and broadly available. Additionally, mRNA technology may have numerous and far-reaching uses in the field of medicine, opening up fresh avenues for the diagnosis and treatment of disease. This paper gives an overview of the existing drawbacks of mRNA vaccine delivery techniques, the creative solutions created to address these drawbacks, and their prospective public health implications. The development of mRNA vaccines for illnesses other than infectious diseases and creating scalable and affordable manufacturing processes are some of the future directions for research in this area that are covered in this paper.
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Affiliation(s)
- Abhishek Verma
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, Punjab 142001, India
| | - Ankit Awasthi
- Department of Pharmaceutics, ISF College of Pharmacy, Moga, Punjab 142001, India
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12
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Skolnik JM, Morrow MP. Vaccines for HPV-associated diseases. Mol Aspects Med 2023; 94:101224. [PMID: 37931422 DOI: 10.1016/j.mam.2023.101224] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/08/2023]
Abstract
Human papillomavirus (HPV) infection represents a significant global health concern owing to its role in the etiology of conditions ranging from benign low-grade lesions to cancers of the cervix, head and neck, anus, vagina, vulva, and penis. Prophylactic vaccination programs, primarily targeting adolescent girls, have achieved dramatic reductions in rates of HPV infection and cervical cancer in recent years. However, there is a clear demand for a strategy to manage the needs of the many people who are already living with persistent HPV infection and/or HPV-associated conditions. Unlike prophylactic vaccines, which act to prevent HPV infection, therapeutic vaccination presents an opportunity to induce cellular immunity against established HPV infections and lesions and prevent progression to cancer. Several HPV vaccines are undergoing clinical development, using a range of platforms. Peptide- or protein-based vaccines, vector-based vaccines, whole-cell vaccines, and nucleic acid vaccines each offer relative merits and limitations for the delivery of HPV antigens and the subsequent generation of targeted immune responses. There has been particular interest in DNA-based vaccines, which elicit both cellular and humoral immune responses to provide long-lasting immunity. DNA vaccines offer several practical advantages over other vaccine platforms, including the potential for rapid and scalable manufacturing, targeting of many different antigens, and potential for repeat boosting. Furthermore, unlike vectored approaches, DNA vaccines are thermostable over extended time periods, which may enable shipping and storage. Several delivery strategies are available to address the main challenge of DNA vaccines, namely their relatively low transfection efficiency. We review the latest clinical data supporting the development of DNA vaccines and reflect on this exciting prospect in the management of HPV-related disease.
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13
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Pastor Y, Calvo A, Salvador-Erro J, Gamazo C. Refining Immunogenicity through Intradermal Delivery of Outer Membrane Vesicles against Shigella flexneri in Mice. Int J Mol Sci 2023; 24:16910. [PMID: 38069232 PMCID: PMC10706920 DOI: 10.3390/ijms242316910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Shigellosis remains a global health concern, especially in low- and middle-income countries. Despite improvements in sanitation, the absence of a licensed vaccine for human use has prompted global health organizations to support the development of a safe and effective multivalent vaccine that is cost-effective and accessible for limited-resource regions. Outer Membrane Vesicles (OMVs) have emerged in recent years as an alternative to live attenuated or whole-inactivated vaccines due to their immunogenicity and self-adjuvating properties. Previous works have demonstrated the safety and protective capacity of OMVs against Shigella flexneri infection in mouse models when administered through mucosal or intradermal routes. However, some immunological properties, such as the cellular response or cross-protection among different Shigella strains, remained unexplored. In this study, we demonstrate that intradermal immunization of OMVs with needle-free devices recruits a high number of immune cells in the dermis, leading to a robust cellular response marked by antigen-specific cytokine release and activation of effector CD4 T cells. Additionally, functional antibodies are generated, neutralizing various Shigella serotypes, suggesting cross-protective capacity. These findings highlight the potential of OMVs as a promising vaccine platform against shigellosis and support intradermal administration as a simple and painless vaccination strategy to address this health challenge.
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Affiliation(s)
| | | | | | - Carlos Gamazo
- Department of Microbiology and Parasitology, Navarra Medical Research Institute (IdiSNA), University of Navarra, 31008 Pamplona, Spain; (Y.P.); (A.C.); (J.S.-E.)
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14
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Jha SK, Imran M, Jha LA, Hasan N, Panthi VK, Paudel KR, Almalki WH, Mohammed Y, Kesharwani P. A Comprehensive review on Pharmacokinetic Studies of Vaccines: Impact of delivery route, carrier-and its modulation on immune response. ENVIRONMENTAL RESEARCH 2023; 236:116823. [PMID: 37543130 DOI: 10.1016/j.envres.2023.116823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
The lack of knowledge about the absorption, distribution, metabolism, and excretion (ADME) of vaccines makes former biopharmaceutical optimization difficult. This was shown during the COVID-19 immunization campaign, where gradual booster doses were introduced.. Thus, understanding vaccine ADME and its effects on immunization effectiveness could result in a more logical vaccine design in terms of formulation, method of administration, and dosing regimens. Herein, we will cover the information available on vaccine pharmacokinetics, impacts of delivery routes and carriers on ADME, utilization and efficiency of nanoparticulate delivery vehicles, impact of dose level and dosing schedule on the therapeutic efficacy of vaccines, intracellular and endosomal trafficking and in vivo fate, perspective on DNA and mRNA vaccines, new generation sequencing and mathematical models to improve cancer vaccination and pharmacology, and the reported toxicological study of COVID-19 vaccines. Altogether, this review will enhance the reader's understanding of the pharmacokinetics of vaccines and methods that can be implied in delivery vehicle design to improve the absorption and distribution of immunizing agents and estimate the appropriate dose to achieve better immunogenic responses and prevent toxicities.
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Affiliation(s)
- Saurav Kumar Jha
- Department of Biomedicine, Health & Life Convergence Sciences, Mokpo National University, Muan-gun, Jeonnam, 58554, Republic of Korea; Department of Biological Sciences and Bioengineering (BSBE), Indian Institute of Technology, Kanpur, 208016, Uttar Pradesh, India.
| | - Mohammad Imran
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Laxmi Akhileshwar Jha
- H. K. College of Pharmacy, Mumbai University, Pratiksha Nagar, Jogeshwari, West Mumbai, 400102, India
| | - Nazeer Hasan
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Vijay Kumar Panthi
- Department of Pharmacy, College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, 58554, Republic of Korea
| | - Keshav Raj Paudel
- Centre for Inflammation, Faculty of Science, School of Life Science, Centenary Institute and University of Technology Sydney, Sydney, 2007, Australia
| | - Waleed H Almalki
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Umm Al-Qura University, Makkah, 24381, Saudi Arabia
| | - Yousuf Mohammed
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India; Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
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15
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Lassaunière R, Polacek C, Linnea Tingstedt J, Fomsgaard A. Preclinical evaluation of a SARS-CoV-2 variant B.1.351-based candidate DNA vaccine. Vaccine 2023; 41:6505-6513. [PMID: 37726179 DOI: 10.1016/j.vaccine.2023.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/22/2023] [Accepted: 09/12/2023] [Indexed: 09/21/2023]
Abstract
The SARS-CoV-2 pandemic revealed the critical shortfalls of global vaccine availability for emergent pathogens and the need for exploring additional vaccine platforms with rapid update potential in response to new variants. Thus, it remains essential, for the present evolving SARS-CoV-2/Covid-19 and future pandemics, to continuously develop and characterize new and different vaccine platforms. Here, we describe an expression-optimized DNA vaccine candidate based on the SARS-CoV-2 spike protein of the Beta variant (B.1.351), pNTC-Spike.351, and, in animal models, compare its immunogenicity with a similar DNA vaccine encoding the ancestral index strain spike protein, pNTC-Spike. Both DNA vaccines induced neutralizing antibodies and a Th1 biased immune response. In contrast to the index-specific vaccine, the Beta-specific DNA vaccine induced antibodies in mice and rabbits that, even at low levels, efficiently neutralize the otherwise antibody resistant Beta variant. It similarly neutralized unrelated variants bearing the neutralization resistant E484K spike mutation. Intensive priming using two vaccinations with pNTC-Spike and a single booster immunization with the pNTC-Spike.351 induced a more robust neutralizing antibody response with comparable magnitude against different variants of concern. Thus, DNA vaccine technology with heterologous spike protein prime-boost should be explored further using the Beta derived pNTC-Spike.351 to broaden neutralizing antibody responses against emerging variants of concern.
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Affiliation(s)
- Ria Lassaunière
- Department of Virus and Microbiological Special Diagnostic, Statens Serum Institut, Copenhagen, Denmark
| | - Charlotta Polacek
- Department of Virus and Microbiological Special Diagnostic, Statens Serum Institut, Copenhagen, Denmark
| | - Jeanette Linnea Tingstedt
- Department of Virus and Microbiological Special Diagnostic, Statens Serum Institut, Copenhagen, Denmark
| | - Anders Fomsgaard
- Department of Virus and Microbiological Special Diagnostic, Statens Serum Institut, Copenhagen, Denmark; Infectious Disease Research Unit, Clinical Institute, University of Southern Denmark, Odense, Denmark.
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16
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Zhang W, Pfeifle A, Lansdell C, Frahm G, Cecillon J, Tamming L, Gravel C, Gao J, Thulasi Raman SN, Wang L, Sauve S, Rosu-Myles M, Li X, Johnston MJW. The Expression Kinetics and Immunogenicity of Lipid Nanoparticles Delivering Plasmid DNA and mRNA in Mice. Vaccines (Basel) 2023; 11:1580. [PMID: 37896985 PMCID: PMC10610642 DOI: 10.3390/vaccines11101580] [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: 07/31/2023] [Revised: 10/05/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
In recent years, lipid nanoparticles (LNPs) have emerged as a revolutionary technology for vaccine delivery. LNPs serve as an integral component of mRNA vaccines by protecting and transporting the mRNA payload into host cells. Despite their prominence in mRNA vaccines, there remains a notable gap in our understanding of the potential application of LNPs for the delivery of DNA vaccines. In this study, we sought to investigate the suitability of leading LNP formulations for the delivery of plasmid DNA (pDNA). In addition, we aimed to explore key differences in the properties of popular LNP formulations when delivering either mRNA or DNA. To address these questions, we compared three leading LNP formulations encapsulating mRNA- or pDNA-encoding firefly luciferase based on potency, expression kinetics, biodistribution, and immunogenicity. Following intramuscular injection in mice, we determined that RNA-LNPs formulated with either SM-102 or ALC-0315 lipids were the most potent (all p-values < 0.01) and immunogenic (all p-values < 0.05), while DNA-LNPs formulated with SM-102 or ALC-0315 demonstrated the longest duration of signal. Additionally, all LNP formulations were found to induce expression in the liver that was proportional to the signal at the injection site (SM102: r = 0.8787, p < 0.0001; ALC0315: r = 0.9012, p < 0.0001; KC2: r = 0.9343, p < 0.0001). Overall, this study provides important insights into the differences between leading LNP formulations and their applicability to DNA- and RNA-based vaccinations.
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Affiliation(s)
- Wanyue Zhang
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Annabelle Pfeifle
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Casey Lansdell
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
| | - Grant Frahm
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
| | - Jonathon Cecillon
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Levi Tamming
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Caroline Gravel
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
| | - Jun Gao
- Centre for Vaccines, Clinical Trials and Biostatistics, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada
| | - Sathya N. Thulasi Raman
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
| | - Lisheng Wang
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Simon Sauve
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
| | - Michael Rosu-Myles
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Xuguang Li
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada;
| | - Michael J. W. Johnston
- Centre for Oncology, Radiopharmaceuticals and Research, Biologic and Radiopharmaceutical Drugs Directorate, Health Products and Food Branch, Health Canada and World Health Organization Collaborating Center for Standardization and Evaluation of Biologicals, Ottawa, ON K1A 0K9, Canada; (W.Z.); (A.P.)
- Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada
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17
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Swain B, Campodonico VA, Curtiss R. Recombinant Attenuated Edwardsiella piscicida Vaccine Displaying Regulated Lysis to Confer Biological Containment and Protect Catfish against Edwardsiellosis. Vaccines (Basel) 2023; 11:1470. [PMID: 37766146 PMCID: PMC10534663 DOI: 10.3390/vaccines11091470] [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: 07/02/2023] [Revised: 08/31/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
We implemented a unique strategy to construct a recombinant attenuated Edwardsiella vaccine (RAEV) with a biological containment phenotype that causes regulated bacterial cell wall lysis. This process ensures that the vaccine strain is not able to persist in the environment. The murA gene is responsible for the catalysis of one of the first steps in the biosynthesis of muramic acid, which is a crucial component of the bacterial cell wall. The regulated lysis phenotype was achieved by inserting the tightly regulated araC ParaBAD cassette in place of the chromosomal murA promoter. Strains with this mutation require growth media supplemented with arabinose in order to survive. Without arabinose, they are unable to synthesize the peptidoglycan cell wall. Following the colonization of fish lymphoid tissues, the murA protein is no longer synthesized due to the lack of arabinose. Lysis is subsequently achieved in vivo, thus preventing the generation of disease symptoms and the spread of the strain into the environment. Vaccine strain χ16016 with the genotype ΔPmurA180::TT araC ParaBADmurA is attenuated and shows a higher LD50 value than that of the wild-type strain. Studies have demonstrated that χ16016 induced TLR4, TLR5, TLR8, TLR9, NOD1 and NOD2-mediated NF-κB pathways and upregulated the gene expression of various cytokines, such as il-8, il-1β, tnf-a, il-6 and ifn-γ in catfish. We observed significant upregulation of the expression profiles of cd4, cd8 and mhc-II genes in different organs of vaccinated catfish. Vaccine strain χ16016 induced systemic and mucosal IgM titers and conferred significant protection to catfish against E. piscicida wild-type challenge. Our lysis RAEV is the first live attenuated vaccine candidate designed to be used in the aquaculture industry that displays this biological containment property.
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Affiliation(s)
- Banikalyan Swain
- Department of Infectious Diseases & Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32608, USA
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18
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Yao M, Liu X, Qian Z, Fan D, Sun X, Zhong L, Wu P. Research progress of nanovaccine in anti-tumor immunotherapy. Front Oncol 2023; 13:1211262. [PMID: 37692854 PMCID: PMC10484753 DOI: 10.3389/fonc.2023.1211262] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/07/2023] [Indexed: 09/12/2023] Open
Abstract
Tumor vaccines aim to activate dormant or unresponsive tumor-specific T lymphocytes by using tumor-specific or tumor-associated antigens, thus enhancing the body's natural defense against cancer. However, the effectiveness of tumor vaccines is limited by the presence of tumor heterogeneity, low immunogenicity, and immune evasion mechanisms. Fortunately, multifunctional nanoparticles offer a unique chance to address these issues. With the advantages of their small size, high stability, efficient drug delivery, and controlled surface chemistry, nanomaterials can precisely target tumor sites, improve the delivery of tumor antigens and immune adjuvants, reshape the immunosuppressive tumor microenvironment, and enhance the body's anti-tumor immune response, resulting in improved efficacy and reduced side effects. Nanovaccine, a type of vaccine that uses nanotechnology to deliver antigens and adjuvants to immune cells, has emerged as a promising strategy for cancer immunotherapy due to its ability to stimulate immune responses and induce tumor-specific immunity. In this review, we discussed the compositions and types of nanovaccine, and the mechanisms behind their anti-tumor effects based on the latest research. We hope that this will provide a more scientific basis for designing tumor vaccines and enhancing the effectiveness of tumor immunotherapy.
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Affiliation(s)
- Min Yao
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Xiyu Liu
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Zhangbo Qian
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Dianfa Fan
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Xinjun Sun
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Liping Zhong
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
| | - Pan Wu
- State Key Laboratory of Targeting Oncology, National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Nanning, Guangxi, China
- Pharmaceutical College, Guangxi Medical University, Nanning, Guangxi, China
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19
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Chattopadhyay A, Jailani AAK, Mandal B. Exigency of Plant-Based Vaccine against COVID-19 Emergence as Pandemic Preparedness. Vaccines (Basel) 2023; 11:1347. [PMID: 37631915 PMCID: PMC10458178 DOI: 10.3390/vaccines11081347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/29/2023] Open
Abstract
After two years since the declaration of COVID-19 as a pandemic by the World Health Organization (WHO), more than six million deaths have occurred due to SARS-CoV-2, leading to an unprecedented disruption of the global economy. Fortunately, within a year, a wide range of vaccines, including pathogen-based inactivated and live-attenuated vaccines, replicating and non-replicating vector-based vaccines, nucleic acid (DNA and mRNA)-based vaccines, and protein-based subunit and virus-like particle (VLP)-based vaccines, have been developed to mitigate the severe impacts of the COVID-19 pandemic. These vaccines have proven highly effective in reducing the severity of illness and preventing deaths. However, the availability and supply of COVID-19 vaccines have become an issue due to the prioritization of vaccine distribution in most countries. Additionally, as the virus continues to mutate and spread, questions have arisen regarding the effectiveness of vaccines against new strains of SARS-CoV-2 that can evade host immunity. The urgent need for booster doses to enhance immunity has been recognized. The scarcity of "safe and effective" vaccines has exacerbated global inequalities in terms of vaccine coverage. The development of COVID-19 vaccines has fallen short of the expectations set forth in 2020 and 2021. Furthermore, the equitable distribution of vaccines at the global and national levels remains a challenge, particularly in developing countries. In such circumstances, the exigency of plant virus-based vaccines has become apparent as a means to overcome supply shortages through fast manufacturing processes and to enable quick and convenient distribution to millions of people without the reliance on a cold chain system. Moreover, plant virus-based vaccines have demonstrated both safety and efficacy in eliciting robust cellular immunogenicity against COVID-19 pathogens. This review aims to shed light on the advantages and disadvantages of different types of vaccines developed against SARS-CoV-2 and provide an update on the current status of plant-based vaccines in the fight against the COVID-19 pandemic.
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Affiliation(s)
- Anirudha Chattopadhyay
- Pulses Research Station, Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar 385506, India;
| | - A. Abdul Kader Jailani
- Department of Plant Pathology, North Florida Research and Education Center, University of Florida, Quincy, FL 32351, USA
| | - Bikash Mandal
- Advanced Centre for Plant Virology, Division of Plant Pathology, Indian Agricultural Research Institute, New Delhi 110012, India
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20
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Han L, Song S, Feng H, Ma J, Wei W, Si F. A roadmap for developing Venezuelan equine encephalitis virus (VEEV) vaccines: Lessons from the past, strategies for the future. Int J Biol Macromol 2023:125514. [PMID: 37353130 DOI: 10.1016/j.ijbiomac.2023.125514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023]
Abstract
Venezuelan equine encephalitis (VEE) is a zoonotic infectious disease caused by the Venezuelan equine encephalitis virus (VEEV), which can lead to severe central nervous system infections in both humans and animals. At present, the medical community does not possess a viable means of addressing VEE, rendering the prevention of the virus a matter of paramount importance. Regarding the prevention and control of VEEV, the implementation of a vaccination program has been recognized as the most efficient strategy. Nevertheless, there are currently no licensed vaccines or drugs available for human use against VEEV. This imperative has led to a surge of interest in vaccine research, with VEEV being a prime focus for researchers in the field. In this paper, we initially present a comprehensive overview of the current taxonomic classification of VEEV and the cellular infection mechanism of the virus. Subsequently, we provide a detailed introduction of the prominent VEEV vaccine types presently available, including inactivated vaccines, live attenuated vaccines, genetic, and virus-like particle vaccines. Moreover, we emphasize the challenges that current VEEV vaccine development faces and suggest urgent measures that must be taken to overcome these obstacles. Notably, based on our latest research, we propose the feasibility of incorporation codon usage bias strategies to create the novel VEEV vaccine. Finally, we prose several areas that future VEEV vaccine development should focus on. Our objective is to encourage collaboration between the medical and veterinary communities, expedite the translation of existing vaccines from laboratory to clinical applications, while also preparing for future outbreaks of new VEEV variants.
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Affiliation(s)
- Lulu Han
- Institute of Animal Science and Veterinary Medicine, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China; Huaihe Hospital of Henan University, Clinical Medical College of Henan University, Kai Feng 475000, China
| | - Shuai Song
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Key Laboratory of Livestock Disease Prevention of Guangdong Province, Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Techniques of Guangdong Province, Ministry of Agriculture and Rural Affairs, Guangzhou 510640, PR China
| | - Huilin Feng
- Kaifeng Key Laboratory of Infection and Biological Safety, School of Basic Medical Sciences of Henan University, Kai Feng 475000, China
| | - Jing Ma
- Huaihe Hospital of Henan University, Clinical Medical College of Henan University, Kai Feng 475000, China
| | - Wenqiang Wei
- Kaifeng Key Laboratory of Infection and Biological Safety, School of Basic Medical Sciences of Henan University, Kai Feng 475000, China.
| | - Fusheng Si
- Institute of Animal Science and Veterinary Medicine, Shanghai Academy of Agricultural Sciences, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China.
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21
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Pandya A, Shah Y, Kothari N, Postwala H, Shah A, Parekh P, Chorawala MR. The future of cancer immunotherapy: DNA vaccines leading the way. Med Oncol 2023; 40:200. [PMID: 37294501 DOI: 10.1007/s12032-023-02060-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/22/2023] [Indexed: 06/10/2023]
Abstract
Immuno-oncology has revolutionized cancer treatment and has opened up new opportunities for developing vaccination methods. DNA-based cancer vaccines have emerged as a promising approach to activating the bodily immune system against cancer. Plasmid DNA immunizations have shown a favorable safety profile and there occurs induction of generalized as well as tailored immune responses in preclinical and early-phase clinical experiments. However, these vaccines have notable limitations in immunogenicity and heterogeneity and these require refinements. DNA vaccine technology has been focusing on improving vaccine efficacy and delivery, with parallel developments in nanoparticle-based delivery systems and gene-editing technologies such as CRISPR/Cas9. This approach has showcased great promise in enhancing and tailoring the immune response to vaccination. Strategies to enhance the efficacy of DNA vaccines include the selection of appropriate antigens, optimizing insertion in a plasmid, and studying combinations of vaccines with conventional strategies and targeted therapies. Combination therapies have attenuated immunosuppressive activities in the tumor microenvironment and enhanced the capability of immune cells. This review provides an overview of the current framework of DNA vaccines in oncology and focuses on novel strategies, including established combination therapies and those still under development.The challenges that oncologists, scientists, and researchers need to overcome to establish DNA vaccines as an avant-garde approach to defeating cancer, are also emphasized. The clinical implications of the immunotherapeutic approaches and the need for predictive biomarkers have also been reviewed upon. We have also tried to extend the role of Neutrophil extracellular traps (NETs) to the DNA vaccines. The clinical implications of the immunotherapeutic approaches have also been reviewed upon. Ultimately, refining and optimizing DNA vaccines will enable harnessing the immune system's natural ability to recognize and eliminate cancer cells, leading the world towards a revolution in cancer cure.
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Affiliation(s)
- Aanshi Pandya
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Yesha Shah
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Nirjari Kothari
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Humzah Postwala
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Aayushi Shah
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India
| | - Priyajeet Parekh
- AV Pharma LLC, 1545 University Blvd N Ste A, Jacksonville, FL, 32211, USA
| | - Mehul R Chorawala
- Department of Pharmacology and Pharmacy Practice, L. M. College of Pharmacy, Opp. Gujarat University, Ahmedabad, Gujarat, 380009, India.
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22
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Bausart M, Rodella G, Dumont M, Ucakar B, Vanvarenberg K, Malfanti A, Préat V. Combination of local immunogenic cell death-inducing chemotherapy and DNA vaccine increases the survival of glioblastoma-bearing mice. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 50:102681. [PMID: 37105343 DOI: 10.1016/j.nano.2023.102681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/22/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023]
Abstract
Immunotherapy efficacy as monotherapy is negligible for glioblastoma (GBM). We hypothesized that combining therapeutic vaccination using a plasmid encoding an epitope derived from GBM-associated antigen (pTOP) with local delivery of immunogenic chemotherapy using mitoxantrone-loaded PEGylated PLGA-based nanoparticles (NP-MTX) would improve the survival of GBM-bearing mice by stimulating an antitumor immune response. We first proved that MTX retained its ability to induce cytotoxicity and immunogenic cell death of GBM cells after encapsulation. Intratumoral delivery of MTX or NP-MTX increased the frequency of IFN-γ-secreting CD8 T cells. NP-MTX mixed with free MTX in combination with pTOP DNA vaccine increased the median survival of GL261-bearing mice and increased M1-like macrophages in the brain. The addition of CpG to this combination abolished the survival benefit but led to increased M1 to M2 macrophage ratio and IFN-γ-secreting CD4 T cell frequency. These results highlight the benefits of combination strategies to potentiate immunotherapy and improve GBM outcome.
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Affiliation(s)
- Mathilde Bausart
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Giulia Rodella
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Mathilde Dumont
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Bernard Ucakar
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Kevin Vanvarenberg
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium
| | - Alessio Malfanti
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium.
| | - Véronique Préat
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200 Brussels, Belgium.
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23
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Cagigi A, Douradinha B. Have mRNA vaccines sentenced DNA vaccines to death? Expert Rev Vaccines 2023; 22:1154-1167. [PMID: 37941101 DOI: 10.1080/14760584.2023.2282065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/07/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION After receiving emergency approval during the COVID-19 pandemic, mRNA vaccines have taken center stage in the quest to enhance future vaccination strategies for both infectious diseases and cancer. Indeed, they have significantly overshadowed another facet of genetic vaccination, specifically DNA vaccines. Nevertheless, it is important to acknowledge that both types of genetic vaccines have distinct advantages and disadvantages that set them apart from each other. AREAS COVERED In this work, we delve extensively into the history of genetic vaccines, their mechanisms of action, their strengths, and limitations, and ultimately highlight ongoing research in key areas for potential enhancement of both DNA and mRNA vaccines. EXPERT OPINION Here, we assess the significance of the primary benefits and drawbacks associated with DNA and mRNA vaccination. We challenge the current lines of thought by highlighting that the existing drawbacks of DNA vaccination could potentially be more straightforward to address compared to those linked with mRNA vaccination. In our view, this suggests that DNA vaccines should remain viable contenders in the pursuit of the future of vaccination.
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Affiliation(s)
- Alberto Cagigi
- Nykode Therapeutics ASA, Oslo Science Park, Oslo, Norway
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