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Wei J, Guo F, Song Y, Feng T, Wang Y, Xu K, Song J, Kaysar E, Abdukayyum R, Lin F, Li K, Li B, Qian Z, Wang X, Wang H, Xu T. Analysis of the components of Mycobacterium tuberculosis heat-resistant antigen (Mtb-HAg) and its regulation of γδ T-cell function. Cell Mol Biol Lett 2024; 29:70. [PMID: 38741147 PMCID: PMC11089708 DOI: 10.1186/s11658-024-00585-7] [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: 11/07/2023] [Accepted: 04/26/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Mycobacterium tuberculosis heat-resistant antigen (Mtb-HAg) is a peptide antigen released from the mycobacterial cytoplasm into the supernatant of Mycobacterium tuberculosis (Mtb) attenuated H37Ra strain after autoclaving at 121 °C for 20 min. Mtb-HAg can specifically induce γδ T-cell proliferation in vitro. However, the exact composition of Mtb-HAg and the protein antigens that are responsible for its function are currently unknown. METHODS Mtb-HAg extracted from the Mtb H37Ra strain was subjected to LC‒MS mass spectrometry. Twelve of the identified protein fractions were recombinantly expressed in Escherichia coli by genetic engineering technology using pET-28a as a plasmid and purified by Ni-NTA agarose resin to stimulate peripheral blood mononuclear cells (PBMCs) from different healthy individuals. The proliferation of γδ T cells and major γδ T-cell subset types as well as the production of TNF-α and IFN-γ were determined by flow cytometry. Their proliferating γδ T cells were isolated and purified using MACS separation columns, and Mtb H37Ra-infected THP-1 was co-cultured with isolated and purified γδ T cells to quantify Mycobacterium viability by counting CFUs. RESULTS In this study, Mtb-HAg from the attenuated Mtb H37Ra strain was analysed by LC‒MS mass spectrometry, and a total of 564 proteins were identified. Analysis of the identified protein fractions revealed that the major protein components included heat shock proteins and Mtb-specific antigenic proteins. Recombinant expression of 10 of these proteins in by Escherichia coli genetic engineering technology was used to successfully stimulate PBMCs from different healthy individuals, but 2 of the proteins, EsxJ and EsxA, were not expressed. Flow cytometry results showed that, compared with the IL-2 control, HspX, GroEL1, and GroES specifically induced γδ T-cell expansion, with Vγ2δ2 T cells as the main subset, and the secretion of the antimicrobial cytokines TNF-α and IFN-γ. In contrast, HtpG, DnaK, GroEL2, HbhA, Mpt63, EsxB, and EsxN were unable to promote γδ T-cell proliferation and the secretion of TNF-α and IFN-γ. None of the above recombinant proteins were able to induce the secretion of TNF-α and IFN-γ by αβ T cells. In addition, TNF-α, IFN-γ-producing γδ T cells inhibit the growth of intracellular Mtb. CONCLUSION Activated γδ T cells induced by Mtb-HAg components HspX, GroES, GroEL1 to produce TNF-α, IFN-γ modulate macrophages to inhibit intracellular Mtb growth. These data lay the foundation for subsequent studies on the mechanism by which Mtb-HAg induces γδ T-cell proliferation in vitro, as well as the development of preventive and therapeutic vaccines and rapid diagnostic reagents.
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MESH Headings
- Humans
- Antigens, Bacterial/immunology
- Antigens, Bacterial/metabolism
- Antigens, Bacterial/genetics
- Mycobacterium tuberculosis/immunology
- Mycobacterium tuberculosis/genetics
- Cell Proliferation
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Interferon-gamma/metabolism
- Interferon-gamma/immunology
- Receptors, Antigen, T-Cell, gamma-delta/metabolism
- Receptors, Antigen, T-Cell, gamma-delta/immunology
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Tumor Necrosis Factor-alpha/metabolism
- Leukocytes, Mononuclear/metabolism
- Leukocytes, Mononuclear/immunology
- Bacterial Proteins/metabolism
- Bacterial Proteins/genetics
- Bacterial Proteins/immunology
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Affiliation(s)
- Jing Wei
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Fangzheng Guo
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Yamin Song
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Tong Feng
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Ying Wang
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Kun Xu
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Jianhan Song
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Eldana Kaysar
- Xinjiang Key Laboratory of Hotan Characteristic Chinese Traditional Medicine Research, College of Xinjiang Uyghur Medicine, Hotan, 848099, China
| | - Reyima Abdukayyum
- Xinjiang Key Laboratory of Hotan Characteristic Chinese Traditional Medicine Research, College of Xinjiang Uyghur Medicine, Hotan, 848099, China
| | - Feiyang Lin
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Kangsheng Li
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Baiqing Li
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Zhongqing Qian
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China
| | - Xiaojing Wang
- Anhui Province Key Laboratory of Clinical and Preclinical Research in Respiratory Disease, Bengbu Medical University, Bengbu, 233000, China
| | - Hongtao Wang
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China.
- Xinjiang Key Laboratory of Hotan Characteristic Chinese Traditional Medicine Research, College of Xinjiang Uyghur Medicine, Hotan, 848099, China.
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China.
| | - Tao Xu
- Laboratory Medicine Experimental Center, Laboratory Medicine College, Bengbu Medical University, Bengbu, 233000, China.
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Bengbu Medical University, Bengbu, 233000, China.
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Hoseinpour R, Hasani A, Baradaran B, Abdolalizadeh J, Salehi R, Hasani A, Nabizadeh E, Yekani M, Hasani R, Kafil HS, Azizian K, Memar MY. Tuberculosis vaccine developments and efficient delivery systems: A comprehensive appraisal. Heliyon 2024; 10:e26193. [PMID: 38404880 PMCID: PMC10884459 DOI: 10.1016/j.heliyon.2024.e26193] [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: 08/20/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/27/2024] Open
Abstract
Despite the widespread use of the Bacillus Calmette-Guérin (BCG) vaccine, Mycobacterium tuberculosis (MTB) continues to be a global burden. Vaccination has been proposed to prevent and treat tuberculosis (TB) infection, and several of them are in different phases of clinical trials. Though vaccine production is in progress but requires more attention. There are several TB vaccines in the trial phase, most of which are based on a combination of proteins/adjuvants or recombinant viral vectors used for selected MTB antigens. In this review, we attempted to discuss different types of TB vaccines based on the vaccine composition, the immune responses generated, and their clinical trial phases. Furthermore, we have briefly overviewed the effective delivery systems used for the TB vaccine and their effectiveness in different vaccines.
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Affiliation(s)
- Rasoul Hoseinpour
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Laboratory sciences and Microbiology, Faculty of Medicine, Tabriz Medical Sciences, Islamic Azad University, Tabriz, Iran
| | - Alka Hasani
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Clinical Research Development Unit, Sina Educational, Research, and Treatment Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jalal Abdolalizadeh
- Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roya Salehi
- Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Akbar Hasani
- Department of Clinical Biochemistry and Applied Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Edris Nabizadeh
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center (IRC), Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mina Yekani
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | | | - Hossein Samadi Kafil
- Department of Medical Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- Drug Applied Research Center and Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Khalil Azizian
- Department of Microbiology, Faculty of Medicine, Kurdistan University of Medical Science, Sanandaj, Iran
| | - Mohammad Yousef Memar
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Zhou F, Zhang D. Recent advance in the development of tuberculosis vaccines in clinical trials and virus-like particle-based vaccine candidates. Front Immunol 2023; 14:1238649. [PMID: 38022657 PMCID: PMC10652786 DOI: 10.3389/fimmu.2023.1238649] [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: 06/12/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Tuberculosis (TB) remains a serious public health threat around the world. An effective vaccine is urgently required for cost-effective, long-term control of TB. However, the only licensed vaccine Bacillus Calmette-Guerin (BCG) is limited to prevent TB for its highly variable efficacy. Substantial progress has been made in research and development (R&D) of TB vaccines in the past decades, and a dozen vaccine candidates, including live attenuated mycobacterial vaccines, killed mycobacterial vaccines, adjuvanted subunit vaccines, viral vector vaccines, and messenger RNA (mRNA) vaccines were developed in clinical trials to date. Nevertheless, many challenges to the successful authorization for the use and deployment of an effective tuberculosis vaccine remain. Therefore, it is still necessary and urgent to continue exploring new vaccine construction approaches. Virus-like particles (VLPs) present excellent prospects in the field of vaccine development because of their helpful immunological features such as being safe templates without containing viral nucleic acid, repetitive surface geometry, conformational epitopes similar to natural viruses, and enhancing both innate and adaptive immune responses. The marketization process of VLP vaccines has never stopped despite VLP vaccines face several shortcomings such as their complex and slow development process and high production cost, and several VLP-based vaccines, including vaccines against Human papillomavirus (HPV), Hepatitis B Virus (HBV) and malaria, are successfully licensed for use at the market. In this review, we provide an update on the current progress regarding the development of TB vaccines in clinical trials and seek to give an overview of VLP-based TB vaccine candidates.
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Affiliation(s)
- Fangbin Zhou
- Department of Tropical Diseases, Naval Medical University, Shanghai, China
| | - Dongmei Zhang
- Department of Tropical Diseases, Naval Medical University, Shanghai, China
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Kim H, Choi HG, Shin SJ. Bridging the gaps to overcome major hurdles in the development of next-generation tuberculosis vaccines. Front Immunol 2023; 14:1193058. [PMID: 37638056 PMCID: PMC10451085 DOI: 10.3389/fimmu.2023.1193058] [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: 03/24/2023] [Accepted: 07/27/2023] [Indexed: 08/29/2023] Open
Abstract
Although tuberculosis (TB) remains one of the leading causes of death from an infectious disease worldwide, the development of vaccines more effective than bacille Calmette-Guérin (BCG), the only licensed TB vaccine, has progressed slowly even in the context of the tremendous global impact of TB. Most vaccine candidates have been developed to strongly induce interferon-γ (IFN-γ)-producing T-helper type 1 (Th1) cell responses; however, accumulating evidence has suggested that other immune factors are required for optimal protection against Mycobacterium tuberculosis (Mtb) infection. In this review, we briefly describe the five hurdles that must be overcome to develop more effective TB vaccines, including those with various purposes and tested in recent promising clinical trials. In addition, we discuss the current knowledge gaps between preclinical experiments and clinical studies regarding peripheral versus tissue-specific immune responses, different underlying conditions of individuals, and newly emerging immune correlates of protection. Moreover, we propose how recently discovered TB risk or susceptibility factors can be better utilized as novel biomarkers for the evaluation of vaccine-induced protection to suggest more practical ways to develop advanced TB vaccines. Vaccines are the most effective tools for reducing mortality and morbidity from infectious diseases, and more advanced technologies and a greater understanding of host-pathogen interactions will provide feasibility and rationale for novel vaccine design and development.
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Affiliation(s)
- Hongmin Kim
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Han-Gyu Choi
- Department of Microbiology and Medical Science, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Sung Jae Shin
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
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Stosman KI, Aleksandrov AG, Sivak KV, Buzitskaya ZV, Stukova MA. Evaluation of the immunotoxicity and allergenicity of a new intranasal influenza vector vaccine against tuberculosis carrying TB10.4 and HspX antigens. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2023; 26:558-563. [PMID: 37051099 PMCID: PMC10083829 DOI: 10.22038/ijbms.2023.68440.14936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/22/2023] [Indexed: 04/14/2023]
Abstract
Objectives A new vaccine candidate TB/FLU-05E has been developed at the Smorodintsev Research Institute of Influenza (Russia). The vaccine is based on the attenuated influenza strain A/PR8/NS124-TB10.4-2A-HspX that expresses mycobacterial antigens TB10.4 and HspX. This article describes the results of preclinical immunotoxicity and allergenicity studies of the new vector vaccine TB/FLU-05E against tuberculosis. Materials and Methods The experiments were conducted on male CBA mice, С57/black/6 mice, and guinea pigs. The vaccine candidate was administered intranasally (7.7 lg TCID50/animal and 8.0 lg TCID50/animal) twice at a 21-day interval. The immunotoxic properties of the vaccine were assessed in mice according to the following parameters: spleen and thymus weight and their organ-to-body weight ratio, splenic and thymic cellularity, hemagglutination titer assay, delayed-type hypersensitivity test, and phagocytic activity of peritoneal macrophages. Histological examination of the thymus and spleen and white blood cell counts were also performed. Allergenicity of the vaccine was assessed in guinea pigs using conjunctival and general anaphylaxis reaction tests. Results The results showed that double immunization with the TB/FLU-05E vaccine did not affect the phagocytic activity of peritoneal macrophages, cellular and humoral immunity after immunization with a heterologous antigen (sheep red blood cells), or the organ-to-body weight ratio of immunocompetent organs (thymus and spleen). The vaccine candidate demonstrated no allergenic properties. Conclusion According to the results of this study, the TB/FLU-05E vaccine is well-tolerated by the immune system and demonstrates no immunotoxicity or allergenicity.
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Affiliation(s)
- Kira I. Stosman
- Smorodintsev Research Institute of Influenza, 197376, Ulitsa Professora Popova 15/17, St. Petersburg, Russian Federation
| | - Andrey G. Aleksandrov
- Smorodintsev Research Institute of Influenza, 197376, Ulitsa Professora Popova 15/17, St. Petersburg, Russian Federation
- Corresponding author: Andrey G. Aleksandrov. Smorodintsev Research Institute of Influenza, St. Petersburg, Russian Federation.
| | - Konstantin V. Sivak
- Smorodintsev Research Institute of Influenza, 197376, Ulitsa Professora Popova 15/17, St. Petersburg, Russian Federation
| | - Zhanna V. Buzitskaya
- Smorodintsev Research Institute of Influenza, 197376, Ulitsa Professora Popova 15/17, St. Petersburg, Russian Federation
| | - Marina A. Stukova
- Smorodintsev Research Institute of Influenza, 197376, Ulitsa Professora Popova 15/17, St. Petersburg, Russian Federation
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Nadolinskaia NI, Kotliarova MS, Goncharenko AV. Fighting Tuberculosis: In Search of a BCG Replacement. Microorganisms 2022; 11:microorganisms11010051. [PMID: 36677343 PMCID: PMC9863999 DOI: 10.3390/microorganisms11010051] [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: 12/09/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Tuberculosis is one of the most threatening infectious diseases and represents an important and significant reason for mortality in high-burden regions. The only licensed vaccine, BCG, is hardly capable of establishing long-term tuberculosis protection and is highly variable in its effectiveness. Even after 100 years of BCG use and research, we still cannot unequivocally answer the question of which immune correlates of protection are crucial to prevent Mycobacterium tuberculosis (Mtb) infection or the progression of the disease. The development of a new vaccine against tuberculosis arises a nontrivial scientific challenge caused by several specific features of the intracellular lifestyle of Mtb and the ability of the pathogen to manipulate host immunity. The purpose of this review is to discuss promising strategies and the possibilities of creating a new vaccine that could replace BCG and provide greater protection. The considered approaches include supplementing mycobacterial strains with immunodominant antigens and genetic engineering aimed at altering the interaction between the bacterium and the host cell, such as the exit from the phagosome. Improved new vaccine strains based on BCG and Mtb undergoing clinical evaluation are also overviewed.
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Larsen SE, Williams BD, Rais M, Coler RN, Baldwin SL. It Takes a Village: The Multifaceted Immune Response to Mycobacterium tuberculosis Infection and Vaccine-Induced Immunity. Front Immunol 2022; 13:840225. [PMID: 35359957 PMCID: PMC8960931 DOI: 10.3389/fimmu.2022.840225] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/08/2022] [Indexed: 11/18/2022] Open
Abstract
Despite co-evolving with humans for centuries and being intensely studied for decades, the immune correlates of protection against Mycobacterium tuberculosis (Mtb) have yet to be fully defined. This lapse in understanding is a major lag in the pipeline for evaluating and advancing efficacious vaccine candidates. While CD4+ T helper 1 (TH1) pro-inflammatory responses have a significant role in controlling Mtb infection, the historically narrow focus on this cell population may have eclipsed the characterization of other requisite arms of the immune system. Over the last decade, the tuberculosis (TB) research community has intentionally and intensely increased the breadth of investigation of other immune players. Here, we review mechanistic preclinical studies as well as clinical anecdotes that suggest the degree to which different cell types, such as NK cells, CD8+ T cells, γ δ T cells, and B cells, influence infection or disease prevention. Additionally, we categorically outline the observed role each major cell type plays in vaccine-induced immunity, including Mycobacterium bovis bacillus Calmette-Guérin (BCG). Novel vaccine candidates advancing through either the preclinical or clinical pipeline leverage different platforms (e.g., protein + adjuvant, vector-based, nucleic acid-based) to purposefully elicit complex immune responses, and we review those design rationales and results to date. The better we as a community understand the essential composition, magnitude, timing, and trafficking of immune responses against Mtb, the closer we are to reducing the severe disease burden and toll on human health inflicted by TB globally.
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Affiliation(s)
- Sasha E. Larsen
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, United States
| | - Brittany D. Williams
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, United States,Department of Global Health, University of Washington, Seattle, WA, United States
| | - Maham Rais
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, United States
| | - Rhea N. Coler
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, United States,Department of Global Health, University of Washington, Seattle, WA, United States,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
| | - Susan L. Baldwin
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle Children's Hospital, Seattle, WA, United States,*Correspondence: Susan L. Baldwin,
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Development of Next-Generation Vaccines. Vaccines (Basel) 2022; 10:vaccines10020274. [PMID: 35214730 PMCID: PMC8875761 DOI: 10.3390/vaccines10020274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/09/2022] [Indexed: 11/20/2022] Open
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