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Mahrokhian SH, Tostanoski LH, Vidal SJ, Barouch DH. COVID-19 vaccines: Immune correlates and clinical outcomes. Hum Vaccin Immunother 2024; 20:2324549. [PMID: 38517241 PMCID: PMC10962618 DOI: 10.1080/21645515.2024.2324549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 02/24/2024] [Indexed: 03/23/2024] Open
Abstract
Severe disease due to COVID-19 has declined dramatically as a result of widespread vaccination and natural immunity in the population. With the emergence of SARS-CoV-2 variants that largely escape vaccine-elicited neutralizing antibody responses, the efficacy of the original vaccines has waned and has required vaccine updating and boosting. Nevertheless, hospitalizations and deaths due to COVID-19 have remained low. In this review, we summarize current knowledge of immune responses that contribute to population immunity and the mechanisms how vaccines attenuate COVID-19 disease severity.
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Affiliation(s)
- Shant H. Mahrokhian
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Tufts University School of Medicine, Boston, MA, USA
| | - Lisa H. Tostanoski
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Samuel J. Vidal
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Division of Infectious Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Dan H. Barouch
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Medicine, Harvard Medical School, Boston, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
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2
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Meredith S, Majam V, Zheng H, Verma N, Puri A, Akue A, KuKuruga M, Oakley M, Kumar S. Protective efficacy and correlates of immunity of immunodominant recombinant Babesia microti antigens. Infect Immun 2023; 91:e0016223. [PMID: 37728332 PMCID: PMC10580920 DOI: 10.1128/iai.00162-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/13/2023] [Indexed: 09/21/2023] Open
Abstract
Babesia microti, an intraerythrocytic apicomplexan parasite, is the primary causative agent of human babesiosis and an emerging threat to public health in the United States and elsewhere. An effective vaccine against B. microti would reduce disease severity in acute babesiosis patients and shorten the parasitemic period in asymptomatic individuals, thereby minimizing the risk of transfusion-transmitted babesiosis. Here we report on immunogenicity, protective efficacy, and correlates of immunity following immunization with four immunodominant recombinantly produced B. microti antigens-Serine Reactive Antigen 1 (SERA1), Maltese Cross Form Related Protein 1 (MCFRP1), Piroplasm β-Strand Domain 1 (PiβS1), and Babesia microti Alpha Helical Cell Surface Protein 1 (BAHCS1)-delivered subcutaneously in Montanide ISA 51/CpG adjuvant in three doses to BALB/c mice. Following B. microti parasite challenge, BAHCS1 led to the highest reduction in peak parasitemia (67.8%), followed by SERA1 (44.8%) and MCFRP1 (41.9%); PiβS1 (27.6%) had minimal protective effect. All four B. microti antigens induced high ELISA total IgG and each isotype; however, antibody levels did not directly correlate with anti-parasitic activity in mice. Increased prechallenge levels of some cell populations including follicular helper T cells (TFH) and memory B cells, along with a set of six cytokines [IL-1α, IL-2, IL-3, IL-6, IL-12(p40), and G-CSF] that belong to both innate and adaptive immune responses, were generally associated with protective immunity. Our results indicate that mechanisms driving recombinant B. microti antigen-induced immunity are complex and multifactorial. We think that BAHCS1 warrants further evaluation in preclinical studies.
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Affiliation(s)
- Scott Meredith
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Victoria Majam
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Hong Zheng
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Nitin Verma
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Ankit Puri
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Adovi Akue
- Division of Bacterial, Parasitic, and Allergenic Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Mark KuKuruga
- Division of Bacterial, Parasitic, and Allergenic Products, Office of Vaccines Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Miranda Oakley
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
| | - Sanjai Kumar
- Laboratory of Emerging Pathogens, Division of Emerging and Transfusion Transmitted Diseases, Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland, USA
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3
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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4
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Weber JS, Vassallo M, Levinson BA, Laino AS, Pavlick AC, Woods DM. Clinical and immune correlate results from a phase 1b study of the histone deacetylase inhibitor mocetinostat with ipilimumab and nivolumab in unresectable stage III/IV melanoma. Melanoma Res 2022; 32:324-333. [PMID: 35678233 PMCID: PMC9444873 DOI: 10.1097/cmr.0000000000000818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Checkpoint immunotherapies (CPIs) have improved outcomes for metastatic melanoma patients, with objective response rates to combination ipilimumab and nivolumab of ~58%. Preclinical data suggest that histone deacetylase (HDAC) inhibition enhances antitumor immune activity and may augment CPI. In a phase Ib open-label pilot trial (NCT03565406), patients with therapy-naive metastatic melanoma were treated with the class I/IV HDAC inhibitor mocetinostat orally three times a week in combination with nivolumab and ipilimumab every 3 weeks for 12 weeks followed by 12-week maintenance cycles of nivolumab every 2 weeks and mocetinostat at the same dose and schedule as induction. The endpoints of the trial were safety, definition of a recommended phase 2 dose, preliminary assessment of response, and correlative marker determination. Patient PBMC and serum samples collected at baseline and on-treatment were assessed by flow cytometry and Luminex assays for immune correlates. Ten patients were treated: nine with 70-mg and one with 50-mg mocetinostat. In the 70-mg cohort, eight patients had objective responses. The patient in the 50-mg cohort had an early progression of disease. All patients had grade 2 or higher toxicities, and six had grades 3 and 4 toxicities. Patient PBMC showed significant decreases in myeloid-derived suppressor cells and trends towards reduced anti-inflammatory monocyte phenotypes. Patient serum showed significant upregulation of granzyme A and TNF and trends towards increased granzyme B and IFNγ. Collectively, combining CPI and mocetinostat had favorable response rates but with high levels of toxicity. Assessment of immune correlates supports a shift away from immunosuppressive phenotypes towards enhanced immune responses.
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Affiliation(s)
| | | | | | | | - Anna C. Pavlick
- Laura and Isaac Perlmutter Cancer Center at NYU Langone Health
| | - David M. Woods
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine
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Takano T, Morikawa M, Adachi Y, Kabasawa K, Sax N, Moriyama S, Sun L, Isogawa M, Nishiyama A, Onodera T, Terahara K, Tonouchi K, Nishimura M, Tomii K, Yamashita K, Matsumura T, Shinkai M, Takahashi Y. Distinct immune cell dynamics correlate with the immunogenicity and reactogenicity of SARS-CoV-2 mRNA vaccine. Cell Rep Med 2022; 3:100631. [PMID: 35545084 PMCID: PMC9023335 DOI: 10.1016/j.xcrm.2022.100631] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/28/2022] [Accepted: 04/18/2022] [Indexed: 12/14/2022]
Abstract
Two doses of Pfizer/BioNTech BNT162b2 mRNA vaccine elicit robust severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-neutralizing antibodies with frequent adverse events. Here, by applying a high-dimensional immune profiling on 92 vaccinees, we identify six vaccine-induced immune dynamics that correlate with the amounts of neutralizing antibodies, the severity of adverse events, or both. The early dynamics of natural killer (NK)/monocyte subsets (CD16+ NK cells, CD56high NK cells, and non-classical monocytes), dendritic cell (DC) subsets (DC3s and CD11c- Axl+ Siglec-6+ [AS]-DCs), and NKT-like cells are revealed as the distinct cell correlates for neutralizing-antibody titers, severity of adverse events, and both, respectively. The cell correlates for neutralizing antibodies or adverse events are consistently associated with elevation of interferon gamma (IFN-γ)-inducible chemokines, but the chemokine receptors CCR2 and CXCR3 are expressed in distinct manners between the two correlates: vaccine-induced expression on the neutralizing-antibody correlate and constitutive expression on the adverse-event correlate. The finding may guide vaccine strategies that balance immunogenicity and reactogenicity.
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Affiliation(s)
- Tomohiro Takano
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | | | - Yu Adachi
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | | | - Nicolas Sax
- KOTAI Biotechnologies, Inc., Osaka 565-0871, Japan
| | - Saya Moriyama
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Lin Sun
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Masanori Isogawa
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Ayae Nishiyama
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Taishi Onodera
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Kazutaka Terahara
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Keisuke Tonouchi
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | | | - Kentaro Tomii
- Artificial Intelligence Research Center (AIRC), National Institute of Advanced Industrial Science and Technology (AIST), Tokyo 135-0064, Japan; AIST-Tokyo Tech Real World Big-Data Computation Open Innovation Laboratory (RWBC-OIL), Tokyo 152-8550, Japan
| | | | - Takayuki Matsumura
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan.
| | | | - Yoshimasa Takahashi
- Research Center for Drug and Vaccine Development, National Institute of Infectious Diseases, Tokyo 162-8640, Japan.
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6
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Cohen KW, Linderman SL, Moodie Z, Czartoski J, Lai L, Mantus G, Norwood C, Nyhoff LE, Edara VV, Floyd K, De Rosa SC, Ahmed H, Whaley R, Patel SN, Prigmore B, Lemos MP, Davis CW, Furth S, O’Keefe JB, Gharpure MP, Gunisetty S, Stephens K, Antia R, Zarnitsyna VI, Stephens DS, Edupuganti S, Rouphael N, Anderson EJ, Mehta AK, Wrammert J, Suthar MS, Ahmed R, McElrath MJ. Longitudinal analysis shows durable and broad immune memory after SARS-CoV-2 infection with persisting antibody responses and memory B and T cells. Cell Rep Med 2021; 2:100354. [PMID: 34250512 PMCID: PMC8253687 DOI: 10.1016/j.xcrm.2021.100354] [Citation(s) in RCA: 231] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/27/2021] [Accepted: 06/24/2021] [Indexed: 01/10/2023]
Abstract
Ending the COVID-19 pandemic will require long-lived immunity to SARS-CoV-2. Here, we evaluate 254 COVID-19 patients longitudinally up to 8 months and find durable broad-based immune responses. SARS-CoV-2 spike binding and neutralizing antibodies exhibit a bi-phasic decay with an extended half-life of >200 days suggesting the generation of longer-lived plasma cells. SARS-CoV-2 infection also boosts antibody titers to SARS-CoV-1 and common betacoronaviruses. In addition, spike-specific IgG+ memory B cells persist, which bodes well for a rapid antibody response upon virus re-exposure or vaccination. Virus-specific CD4+ and CD8+ T cells are polyfunctional and maintained with an estimated half-life of 200 days. Interestingly, CD4+ T cell responses equally target several SARS-CoV-2 proteins, whereas the CD8+ T cell responses preferentially target the nucleoprotein, highlighting the potential importance of including the nucleoprotein in future vaccines. Taken together, these results suggest that broad and effective immunity may persist long-term in recovered COVID-19 patients.
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Affiliation(s)
- Kristen W. Cohen
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Susanne L. Linderman
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - Zoe Moodie
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Julie Czartoski
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Lilin Lai
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Yerkes National Primate Research Center, Atlanta, GA 30329, USA
| | - Grace Mantus
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Carson Norwood
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Lindsay E. Nyhoff
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
| | - Venkata Viswanadh Edara
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Yerkes National Primate Research Center, Atlanta, GA 30329, USA
| | - Katharine Floyd
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Yerkes National Primate Research Center, Atlanta, GA 30329, USA
| | - Stephen C. De Rosa
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
- Departments of Laboratory Medicine and Medicine, University of Washington, Seattle, WA 98195, USA
| | - Hasan Ahmed
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | - Rachael Whaley
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Shivan N. Patel
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Brittany Prigmore
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Maria P. Lemos
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Carl W. Davis
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - Sarah Furth
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - James B. O’Keefe
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Mohini P. Gharpure
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - Sivaram Gunisetty
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - Kathy Stephens
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
| | - Rustom Antia
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | - Veronika I. Zarnitsyna
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - David S. Stephens
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Srilatha Edupuganti
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
- Hope Clinic of Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30330, USA
| | - Nadine Rouphael
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
- Hope Clinic of Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30330, USA
| | - Evan J. Anderson
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
| | - Aneesh K. Mehta
- Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA
| | - Jens Wrammert
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
| | - Mehul S. Suthar
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta, Emory University Department of Pediatrics Department of Medicine, Atlanta, GA 30322, USA
- Yerkes National Primate Research Center, Atlanta, GA 30329, USA
| | - Rafi Ahmed
- Emory Vaccine Center, Emory University, Atlanta, GA 30322, USA
- Department of Microbiology and Immunology, Emory University, Atlanta, GA 30322, USA
| | - M. Juliana McElrath
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
- Departments of Laboratory Medicine and Medicine, University of Washington, Seattle, WA 98195, USA
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Huang Y, Williamson BD, Moodie Z, Carpp LN, Chambonneau L, DiazGranados CA, Gilbert PB. Analysis of Neutralizing Antibodies as a Correlate of Instantaneous Risk of Hospitalized Dengue in Placebo Recipients of Dengue Vaccine Efficacy Trials. J Infect Dis 2021; 225:332-340. [PMID: 34174082 DOI: 10.1093/infdis/jiab342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/24/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND In the CYD14 (NCT01373281) and CYD15 (NCT01374516) dengue vaccine efficacy trials, Month 13 neutralizing antibody (nAb) titers correlated inversely with risk of symptomatic, virologically confirmed dengue (VCD) between Month 13 (one month post-final-dose) and Month 25. We assessed nAb titer as a correlate of instantaneous risk of hospitalized VCD (HVCD), for which participants were continually surveilled for 72 months. METHODS Using longitudinal nAb titers from the per-protocol immunogenicity subsets, we estimated hazard ratios (HRs) of HVCD by current nAb titer value for three correlate/endpoint pairs: average titer across all four serotypes/HVCD of any serotype (HVCD-Any), serotype-specific titer/homologous HVCD, and serotype-specific titer/heterologous HVCD. RESULTS Baseline-seropositive placebo recipients with higher average titer had lower instantaneous risk of HVCD-Any in 2-16-year-olds and in 9-16-year-olds (HR 0.26 or 0.15 per 10-fold increase in average titer by two methods, 95% CIs 0.14 to 0.45 and 0.07 to 0.34, respectively) pooled across both trials. Results were similar for homologous HVCD. There was evidence suggesting increased HVCD-Any risk in participants with low average titer (1:10 to 1:100) compared to seronegative participants (HR 1.85, 95% CI 0.93 to 3.68). CONCLUSIONS Natural infection-induced nAbs were inversely associated with hospitalized dengue, upon exceeding a relatively low threshold.
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Affiliation(s)
- Ying Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, United States of America.,Department of Biostatistics, University of Washington, Seattle, 98109, United States of America
| | - Brian D Williamson
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, United States of America
| | - Zoe Moodie
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, United States of America
| | - Lindsay N Carpp
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, United States of America
| | | | - Carlos A DiazGranados
- Clinical Sciences, Sanofi Pasteur, Swiftwater, Pennsylvania, United States of America
| | - Peter B Gilbert
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, 98109, United States of America.,Department of Biostatistics, University of Washington, Seattle, 98109, United States of America
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8
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Marín-Jiménez JA, Capasso A, Lewis MS, Bagby SM, Hartman SJ, Shulman J, Navarro NM, Yu H, Rivard CJ, Wang X, Barkow JC, Geng D, Kar A, Yingst A, Tufa DM, Dolan JT, Blatchford PJ, Freed BM, Torres RM, Davila E, Slansky JE, Pelanda R, Eckhardt SG, Messersmith WA, Diamond JR, Lieu CH, Verneris MR, Wang JH, Kiseljak-Vassiliades K, Pitts TM, Lang J. Testing Cancer Immunotherapy in a Human Immune System Mouse Model: Correlating Treatment Responses to Human Chimerism, Therapeutic Variables and Immune Cell Phenotypes. Front Immunol 2021; 12:607282. [PMID: 33854497 PMCID: PMC8040953 DOI: 10.3389/fimmu.2021.607282] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 03/04/2021] [Indexed: 01/22/2023] Open
Abstract
Over the past decade, immunotherapies have revolutionized the treatment of cancer. Although the success of immunotherapy is remarkable, it is still limited to a subset of patients. More than 1500 clinical trials are currently ongoing with a goal of improving the efficacy of immunotherapy through co-administration of other agents. Preclinical, small-animal models are strongly desired to increase the pace of scientific discovery, while reducing the cost of combination drug testing in humans. Human immune system (HIS) mice are highly immune-deficient mouse recipients rtpeconstituted with human hematopoietic stem cells. These HIS-mice are capable of growing human tumor cell lines and patient-derived tumor xenografts. This model allows rapid testing of multiple, immune-related therapeutics for tumors originating from unique clinical samples. Using a cord blood-derived HIS-BALB/c-Rag2nullIl2rγnullSIRPαNOD (BRGS) mouse model, we summarize our experiments testing immune checkpoint blockade combinations in these mice bearing a variety of human tumors, including breast, colorectal, pancreatic, lung, adrenocortical, melanoma and hematological malignancies. We present in-depth characterization of the kinetics and subsets of the HIS in lymph and non-lymph organs and relate these to protocol development and immune-related treatment responses. Furthermore, we compare the phenotype of the HIS in lymph tissues and tumors. We show that the immunotype and amount of tumor infiltrating leukocytes are widely-variable and that this phenotype is tumor-dependent in the HIS-BRGS model. We further present flow cytometric analyses of immune cell subsets, activation state, cytokine production and inhibitory receptor expression in peripheral lymph organs and tumors. We show that responding tumors bear human infiltrating T cells with a more inflammatory signature compared to non-responding tumors, similar to reports of "responding" patients in human immunotherapy clinical trials. Collectively these data support the use of HIS mice as a preclinical model to test combination immunotherapies for human cancers, if careful attention is taken to both protocol details and data analysis.
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Affiliation(s)
- Juan A. Marín-Jiménez
- Department of Medical Oncology, Catalan Institute of Oncology (ICO-L’Hospitalet), Barcelona, Spain
| | - Anna Capasso
- Department of Oncology, Livestrong Cancer Institutes, Dell Medical School, University of Texas at Austin, Austin, TX, United States
| | - Matthew S. Lewis
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Stacey M. Bagby
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Sarah J. Hartman
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Jeremy Shulman
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Natalie M. Navarro
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Hui Yu
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Chris J. Rivard
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Xiaoguang Wang
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Jessica C. Barkow
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Degui Geng
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Adwitiya Kar
- Division of Endocrinology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Ashley Yingst
- Department of Pediatrics, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Dejene M. Tufa
- Department of Pediatrics, School of Medicine, University of Colorado, Aurora, CO, United States
| | - James T. Dolan
- Rocky Vista College of Osteopathic Medicine – OMS3, Rocky Vista University, Parker, CO, United States
| | - Patrick J. Blatchford
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Denver, Aurora, CO, United States
| | - Brian M. Freed
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
- Division of Allergy and Clinical Immunology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Raul M. Torres
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Eduardo Davila
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Jill E. Slansky
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Roberta Pelanda
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - S. Gail Eckhardt
- Department of Oncology, Livestrong Cancer Institutes, Dell Medical School, University of Texas at Austin, Austin, TX, United States
| | - Wells A. Messersmith
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Jennifer R. Diamond
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Christopher H. Lieu
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Michael R. Verneris
- Department of Pediatrics, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Jing H. Wang
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Katja Kiseljak-Vassiliades
- University of Colorado Cancer Center, Aurora, CO, United States
- Division of Endocrinology, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Todd M. Pitts
- Division of Medical Oncology, School of Medicine, University of Colorado, Aurora, CO, United States
- University of Colorado Cancer Center, Aurora, CO, United States
| | - Julie Lang
- Department of Immunology and Microbiology, School of Medicine, University of Colorado, Aurora, CO, United States
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9
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Dijkman K, Aguilo N, Boot C, Hofman SO, Sombroek CC, Vervenne RA, Kocken CH, Marinova D, Thole J, Rodríguez E, Vierboom MP, Haanstra KG, Puentes E, Martin C, Verreck FA. Pulmonary MTBVAC vaccination induces immune signatures previously correlated with prevention of tuberculosis infection. Cell Rep Med 2021; 2:100187. [PMID: 33521701 PMCID: PMC7817873 DOI: 10.1016/j.xcrm.2020.100187] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/23/2020] [Accepted: 12/17/2020] [Indexed: 11/29/2022]
Abstract
To fight tuberculosis, better vaccination strategies are needed. Live attenuated Mycobacterium tuberculosis-derived vaccine, MTBVAC, is a promising candidate in the pipeline, proven to be safe and immunogenic in humans so far. Independent studies have shown that pulmonary mucosal delivery of Bacillus Calmette-Guérin (BCG), the only tuberculosis (TB) vaccine available today, confers superior protection over standard intradermal immunization. Here we demonstrate that mucosal MTBVAC is well tolerated, eliciting polyfunctional T helper type 17 cells, interleukin-10, and immunoglobulins in the airway and yielding a broader antigenic profile than BCG in rhesus macaques. Beyond our previous work, we show that local immunoglobulins, induced by MTBVAC and BCG, bind to M. tuberculosis and enhance pathogen uptake. Furthermore, after pulmonary vaccination, but not M. tuberculosis infection, local T cells expressed high levels of mucosal homing and tissue residency markers. Our data show that pulmonary MTBVAC administration has the potential to enhance its efficacy and justifies further exploration of mucosal vaccination strategies in preclinical efficacy studies.
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Affiliation(s)
- Karin Dijkman
- Biomedical Primate Research Centre (BPRC), Rijswijk, the Netherlands
| | - Nacho Aguilo
- Department of Microbiology, Faculty of Medicine, IIS Aragon, University of Zaragoza, Zaragoza, Spain
- CIBERES, Instituto de Salud Carlos III, Madrid, Spain
| | - Charelle Boot
- Biomedical Primate Research Centre (BPRC), Rijswijk, the Netherlands
| | - Sam O. Hofman
- Biomedical Primate Research Centre (BPRC), Rijswijk, the Netherlands
| | | | | | | | - Dessislava Marinova
- Department of Microbiology, Faculty of Medicine, IIS Aragon, University of Zaragoza, Zaragoza, Spain
- CIBERES, Instituto de Salud Carlos III, Madrid, Spain
| | - Jelle Thole
- TuBerculosis Vaccine Initiative (TBVI), Lelystad, the Netherlands
| | | | | | | | | | - Carlos Martin
- Department of Microbiology, Faculty of Medicine, IIS Aragon, University of Zaragoza, Zaragoza, Spain
- CIBERES, Instituto de Salud Carlos III, Madrid, Spain
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10
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Leitner WW, Haraway M, Pierson T, Bergmann-Leitner ES. Role of Opsonophagocytosis in Immune Protection against Malaria. Vaccines (Basel) 2020; 8:E264. [PMID: 32486320 PMCID: PMC7350021 DOI: 10.3390/vaccines8020264] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022] Open
Abstract
The quest for immune correlates of protection continues to slow vaccine development. To date, only vaccine-induced antibodies have been confirmed as direct immune correlates of protection against a plethora of pathogens. Vaccine immunologists, however, have learned through extensive characterizations of humoral responses that the quantitative assessment of antibody responses alone often fails to correlate with protective immunity or vaccine efficacy. Despite these limitations, the simple measurement of post-vaccination antibody titers remains the most widely used approaches for vaccine evaluation. Developing and performing functional assays to assess the biological activity of pathogen-specific responses continues to gain momentum; integrating serological assessments with functional data will ultimately result in the identification of mechanisms that contribute to protective immunity and will guide vaccine development. One of these functional readouts is phagocytosis of antigenic material tagged by immune molecules such as antibodies and/or complement components. This review summarizes our current understanding of how phagocytosis contributes to immune defense against pathogens, the pathways involved, and defense mechanisms that pathogens have evolved to deal with the threat of phagocytic removal and destruction of pathogens.
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Affiliation(s)
- Wolfgang W. Leitner
- Basic Immunology Branch, Division of Allergy, Immunology, and Transplantation/National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20852, USA;
| | - Megan Haraway
- Immunology Core/Malaria Biologics Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.H.); (T.P.)
| | - Tony Pierson
- Immunology Core/Malaria Biologics Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.H.); (T.P.)
| | - Elke S. Bergmann-Leitner
- Immunology Core/Malaria Biologics Branch, Walter Reed Army Institute of Research, Silver Spring, MD 20910, USA; (M.H.); (T.P.)
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11
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Saccoccio FM, Jenks JA, Itell HL, Li SH, Berry M, Pollara J, Casper C, Gantt S, Permar SR. Humoral Immune Correlates for Prevention of Postnatal Cytomegalovirus Acquisition. J Infect Dis 2020; 220:772-780. [PMID: 31107951 DOI: 10.1093/infdis/jiz192] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 05/02/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Development of a cytomegalovirus (CMV) vaccine is a high priority. However, the ability of antibodies to protect against CMV infection is not well characterized. Studies of maternal antibodies in infants offer the potential to identify humoral correlates of protection against postnatal acquisition. METHODS This hypothesis-generating study analyzed 29 Ugandan mother-infant pairs that were followed weekly for CMV acquisition. Seventeen mothers and no infants were infected with human immunodeficiency virus (HIV). We evaluated the association between CMV-specific immunoglobulin G (IgG) responses in mothers at the time of delivery and their infants' CMV status at 6 months of age. We also assessed levels of CMV-specific IgG in infants at 6 weeks of age. CMV-specific IgG responses in the mother-infant pairs were then analyzed on the basis of perinatal HIV exposure. RESULTS We found similar levels of multiple CMV glycoprotein-specific IgG binding specificities and functions in mothers and infants, irrespective of perinatal HIV exposure or infant CMV status at 6 months of age. However, the glycoprotein B-specific IgG titer, measured by 2 distinct assays, was higher in infants without CMV infection and was moderately associated with delayed CMV acquisition. CONCLUSIONS These data suggest that high levels of glycoprotein B-specific IgG may contribute to the partial protection against postnatal CMV infection afforded by maternal antibodies, and they support the continued inclusion of glycoprotein B antigens in CMV vaccine candidates.
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Affiliation(s)
- Frances M Saccoccio
- Division of Pediatric Infectious Diseases, Duke University, Durham, North Carolina
| | - Jennifer A Jenks
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina
| | - Hannah L Itell
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina
| | - Shuk Hang Li
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina
| | - Madison Berry
- Duke Human Vaccine Institute, Duke University, Durham, North Carolina
| | - Justin Pollara
- Department of Surgery, Duke University Medical Center, Duke University, Durham, North Carolina
| | - Corey Casper
- Infectious Disease Research Institute, Seattle, Washington
| | - Soren Gantt
- BC Children's Hospital Research Institute, University of British Columbia, Vancouver, Canada
| | - Sallie R Permar
- Division of Pediatric Infectious Diseases, Duke University, Durham, North Carolina.,Duke Human Vaccine Institute, Duke University, Durham, North Carolina
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12
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Abstract
PURPOSE The field of HIV-1 vaccinology has evolved during the last 30 years from the first viral vector HIV gene insert constructs to vaccination regimens using a myriad of strategies. These strategies now include germline-targeting, lineage-based, and structure-guided immunogen design. This narrative review outlines the historical context of HIV vaccinology and subsequently highlights the scientific discoveries during the last 6 years that promise to propel the field forward. METHODS We conducted a search of 2 electronic databases, PubMed and EMBASE, for experimental studies that involved new HIV immunogen designs between 2013 and 2019. During the title and abstract reviews, publications were excluded if they were written in language other than English and/or were a letter to the editor, a commentary, or a conference-only presentation. We then used ClinicalTrials.gov to identify completed and ongoing clinical trials using these strategies. FINDINGS The HIV vaccinology field has undergone periods of significant growth during the last 3 decades. Findings elucidated in preclinical studies have revealed the importance of the interaction between the cellular and humoral immune system. As a result, several new rationally designed vaccine strategies have been developed and explored in the last 6 years, including native-like envelope trimers, nanoparticle, and mRNA vaccine design strategies among others. Several of these strategies have shown enough promise in animal models to progress toward first-in-human Phase I clinical trials. IMPLICATIONS Rapid developments in preclinical and early-phase clinical studies suggest that a tolerable and effective HIV vaccine may be on the horizon.
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Affiliation(s)
- Letitia D Jones
- Duke Human Vaccine Institute, Duke University School of Medicine, Durham, NC, USA
| | - M Anthony Moody
- Duke University School of Medicine and Duke Human Vaccine Institute, Durham, NC, USA
| | - Amelia B Thompson
- Duke University School of Medicine and Duke Human Vaccine Institute, Durham, NC, USA.
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13
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Graham JB, Swarts JL, Thomas S, Voss KM, Sekine A, Green R, Ireton RC, Gale M, Lund JM. Immune Correlates of Protection From West Nile Virus Neuroinvasion and Disease. J Infect Dis 2020; 219:1162-1171. [PMID: 30371803 DOI: 10.1093/infdis/jiy623] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 10/24/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND A challenge to the design of improved therapeutic agents and prevention strategies for neuroinvasive infection and associated disease is the lack of known natural immune correlates of protection. A relevant model to study such correlates is offered by the Collaborative Cross (CC), a panel of recombinant inbred mouse strains that exhibit a range of disease manifestations upon infection. METHODS We performed an extensive screen of CC-F1 lines infected with West Nile virus (WNV), including comprehensive immunophenotyping, to identify groups of lines that exhibited viral neuroinvasion or neuroinvasion with disease and lines that remained free of WNV neuroinvasion and disease. RESULTS Our data reveal that protection from neuroinvasion and disease is multifactorial and that several immune outcomes can contribute. Immune correlates identified include decreased suppressive activity of regulatory T cells at steady state, which correlates with peripheral restriction of the virus. Further, a rapid contraction of WNV-specific CD8+ T cells in the brain correlated with protection from disease. CONCLUSIONS These immune correlates of protection illustrate additional networks and pathways of the WNV immune response that cannot be observed in the C57BL/6 mouse model. Additionally, correlates of protection exhibited before infection, at baseline, provide insight into phenotypic differences in the human population that may predict clinical outcomes upon infection.
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Affiliation(s)
- Jessica B Graham
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center
| | - Jessica L Swarts
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center
| | - Sunil Thomas
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Kathleen M Voss
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Aimee Sekine
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Richard Green
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Renee C Ireton
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Michael Gale
- Center for Innate Immunity and Immune Disease, Department of Immunology, School of Medicine
| | - Jennifer M Lund
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center.,Department of Global Health, School of Medicine and School of Public Health, University of Washington, Seattle, Washington
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14
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Perdiguero B, Gómez CE, García-Arriaza J, Sánchez-Corzo C, Sorzano CÓS, Wilmschen S, von Laer D, Asbach B, Schmalzl C, Peterhoff D, Ding S, Wagner R, Kimpel J, Levy Y, Pantaleo G, Esteban M. Heterologous Combination of VSV-GP and NYVAC Vectors Expressing HIV-1 Trimeric gp145 Env as Vaccination Strategy to Induce Balanced B and T Cell Immune Responses. Front Immunol 2019; 10:2941. [PMID: 31921191 PMCID: PMC6930178 DOI: 10.3389/fimmu.2019.02941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 11/29/2019] [Indexed: 01/03/2023] Open
Abstract
The generation of a vaccine against HIV-1 able to induce durable protective immunity continues a major challenge. The modest efficacy (31.2%) of the phase III RV144 clinical trial provided the first demonstration that a prophylactic HIV/AIDS vaccine is achievable but emphasized the need for further refinements of vaccine candidates, formulations, and immunization regimens. Here, we analyzed in mice the immunogenicity profile elicited by different homologous and heterologous prime/boost combinations using the modified rhabdovirus VSV-GP combined with DNA or poxviral NYVAC vectors, all expressing trimeric membrane-bound Env (gp145) of HIV-1 96ZM651 clade C, with or without purified gp140 protein component. In cultured cells infected with recombinant VSV-GP or NYVAC viruses, gp145 epitopes at the plasma membrane were recognized by human HIV-1 broadly neutralizing antibodies (bNAbs). In immunized mice, the heterologous combination of VSV-GP and NYVAC recombinant vectors improved the induction of HIV-1 Env-specific humoral and cellular immune responses compared to homologous prime/boost protocols. Specifically, the combination of VSV-GP in the prime and NYVAC in the boost induced higher HIV-1 Env-specific T cell (CD4/CD8 T cells and T follicular helper -Tfh- cells) immune responses compared to the use of DNA or NYVAC vectors in the prime and VSV-GP in the boost. Such enhanced T cell responses correlated with an enhancement of the Env-specific germinal center (GC) B cell population and with a heavily biased Env-specific response toward the Th1-associated IgG2a and IgG3 subclasses, while the other groups showed a Th2-associated IgG1 bias. In summary, our T and B cell population data demonstrated that VSV-GP-based vectors could be taken into consideration as an optimized immunogenic HIV-1 vaccine candidate component against HIV-1 when used for priming in heterologous combinations with the poxvirus vector NYVAC as a boost.
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Affiliation(s)
- Beatriz Perdiguero
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Carmen Elena Gómez
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Juan García-Arriaza
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Cristina Sánchez-Corzo
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Carlos Óscar S Sorzano
- Biocomputing Unit and Computational Genomics, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Sarah Wilmschen
- Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Dorothee von Laer
- Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Benedikt Asbach
- Institute of Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Christina Schmalzl
- Institute of Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - David Peterhoff
- Institute of Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | - Song Ding
- EuroVacc Foundation, Amsterdam, Netherlands
| | - Ralf Wagner
- Institute of Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany.,Institute of Clinical Microbiology and Hygiene, University Hospital Regensburg, Regensburg, Germany
| | - Janine Kimpel
- Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Yves Levy
- Vaccine Research Institute, Créteil, France.,INSERM U955, Paris Est Créteil University, Créteil, France.,AP-HP, Hôpital Henri-Mondor Albert-Chenevier, Service d'Immunologie Clinique et Maladies Infectieuses, Créteil, France
| | - Giuseppe Pantaleo
- Division of Immunology and Allergy, Department of Medicine, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Mariano Esteban
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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15
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Abstract
The RV144 vaccine trial is the only clinical study to have shown a modest but statistically significant decrease in HIV infection risk. RV144 and the subsequent studies identifying the level of V1V2-specific antibodies as a correlate of reduced infection risk are still controversial despite many papers supporting and expanding the initial study. We address these controversies and summarize active-immunization and passive-immunization experiments in nonhuman primates that support the initial finding.
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Affiliation(s)
- Susan Zolla-Pazner
- Division of Infectious Diseases, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Peter B Gilbert
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center and Department of Biostatistics, University of Washington, Seattle, Washington, USA
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16
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Meyer M, Malherbe DC, Bukreyev A. Can Ebola Virus Vaccines Have Universal Immune Correlates of protection? Trends Microbiol 2019; 27:8-16. [PMID: 30201511 PMCID: PMC6309495 DOI: 10.1016/j.tim.2018.08.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/30/2018] [Accepted: 08/15/2018] [Indexed: 12/22/2022]
Abstract
Testing vaccine efficacy against the highly lethal Ebola virus (EBOV) in humans is almost impossible due to obvious ethical reasons and the sporadic nature of outbreaks. For such situations, the 'animal rule' was established, requiring the product be tested in animal models, expected to predict the response observed in humans. For vaccines, this testing aims to identify immune correlates of protection, such as antibody or cell-mediated responses. In the wake of the 2013-2016 EBOV epidemic, and despite advancement of promising candidates into clinical trials, protective correlates remain ambiguous. In the hope of identifying a reliable correlate by comparing preclinical and clinical trial data on immune responses to vaccination, we conclude that correlates are not universal for all EBOV vaccines.
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Affiliation(s)
- Michelle Meyer
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Galveston National Laboratory, Galveston, TX 77555, USA; These authors contributed equally to this work
| | - Delphine C Malherbe
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Galveston National Laboratory, Galveston, TX 77555, USA; These authors contributed equally to this work
| | - Alexander Bukreyev
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA; Department Microbiology & Immunology, University of Texas Medical Branch, Galveston, TX 77555, USA; Galveston National Laboratory, Galveston, TX 77555, USA.
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17
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Trovato M, D'Apice L, Prisco A, De Berardinis P. HIV Vaccination: A Roadmap among Advancements and Concerns. Int J Mol Sci 2018; 19:E1241. [PMID: 29671786 PMCID: PMC5979448 DOI: 10.3390/ijms19041241] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 04/13/2018] [Accepted: 04/17/2018] [Indexed: 12/19/2022] Open
Abstract
Since the identification of the Human Immunodeficiency Virus type 1 (HIV-1) as the etiologic agent of AIDS (Acquired Immunodeficiency Syndrome), many efforts have been made to stop the AIDS pandemic. A major success of medical research has been the development of the highly active antiretroviral therapy and its availability to an increasing number of people worldwide, with a considerable effect on survival. However, a safe and effective vaccine able to prevent and eradicate the HIV pandemic is still lacking. Clinical trials and preclinical proof-of-concept studies in nonhuman primate (NHP) models have provided insights into potential correlates of protection against the HIV-1 infection, which include broadly neutralizing antibodies (bnAbs), non-neutralizing antibodies targeting the variable loops 1 and 2 (V1V2) regions of the HIV-1 envelope (Env), polyfunctional antibody, and Env-specific T-cell responses. In this review, we provide a brief overview of different HIV-1 vaccine approaches and discuss the current understanding of the cellular and humoral correlates of HIV-1 immunity.
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Affiliation(s)
- Maria Trovato
- INSERM u1016, Institut Cochin, 27 Rue du Faubourg Saint Jacques, 75014 Paris, France.
- Institute of Protein Biochemistry, C.N.R., Via Pietro Castellino 111, 80131 Naples, Italy.
| | - Luciana D'Apice
- Institute of Protein Biochemistry, C.N.R., Via Pietro Castellino 111, 80131 Naples, Italy.
| | - Antonella Prisco
- Institute of Genetics and Biophysics A. Buzzati-Traverso, C.N.R., Via Pietro Castellino 111, 80131 Naples, Italy.
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18
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Abstract
INTRODUCTION Dengue is a prevalent disease in tropical and subtropical countries with an estimated 400 million people infected annually. While significant advancement has been made in the chase for an effective dengue vaccine, the recently licensed Sanofi vaccine was, in contrast to in vitro data, only partially protective. Areas covered: This suggests that our understanding of the serological correlates for dengue is currently inadequate. With growing evidence supporting the role of fragment crystalizable gamma receptors (FcγRs) in antibody-mediated neutralization or antibody-dependent enhancement (ADE) of dengue virus (DENV) infection, FcγR-expressing cells have been increasingly used for measuring neutralizing antibody responses elicited by dengue vaccines. Here, we review the mechanisms of how FcγRs modulates both DENV neutralization and enhanced infections via its interactions with antibodies. Expert commentary: This review provides insights on the importance of factoring FcγRs for in vitro neutralization assays. Bridging the gap between in vitro and clinical observations would allow researchers to more accurately predict in vivo vaccine efficacy.
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Affiliation(s)
- Esther Shuyi Gan
- a Program in Emerging Infectious Diseases , Duke-NUS Medical School , Singapore , Singapore
| | - Donald Heng Rong Ting
- b Department of Microbiology and Immunology, Yong Loo Lin School of Medicine , National University of Singapore , Singapore , Singapore
| | - Kuan Rong Chan
- a Program in Emerging Infectious Diseases , Duke-NUS Medical School , Singapore , Singapore
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19
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Petrie JG, Ohmit SE, Truscon R, Johnson E, Braun TM, Levine MZ, Eichelberger MC, Monto AS. Modest Waning of Influenza Vaccine Efficacy and Antibody Titers During the 2007-2008 Influenza Season. J Infect Dis 2016; 214:1142-9. [PMID: 27095420 DOI: 10.1093/infdis/jiw105] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 01/26/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Antibody titers decrease with time following influenza vaccination, raising concerns that vaccine efficacy might wane. However, the relationship between time since vaccination and protection is unclear. METHODS Time-varying vaccine efficacy (VE[t]) was examined in healthy adult participants (age range, 18-49 years) in a placebo-controlled trial of inactivated influenza vaccine (IIV) and live-attenuated influenza vaccine (LAIV) performed during the 2007-2008 influenza season. Symptomatic respiratory illnesses were laboratory-confirmed as influenza. VE(t) was estimated by fitting a smooth function based on residuals from Cox proportional hazards models. Subjects had blood samples collected immediately prior to vaccination, 30 days after vaccination, and at the end of the influenza season for testing by hemagglutination inhibition and neuraminidase inhibition assays. RESULTS Overall efficacy was 70% (95% confidence interval [CI], 50%-82%) for IIV and 38% (95% CI, 5%-59%) for LAIV. Statistically significant waning was detected for IIV (P = .03) but not LAIV (P = .37); however, IIV remained significantly efficacious until data became sparse at the end of the season. Similarly, antibody titers against influenza virus hemagglutinin and neuraminidase significantly decreased over the season among IIV recipients. CONCLUSIONS Both vaccines were efficacious but LAIV less so. IIV efficacy decreased slowly over time, but the vaccine remained significantly efficacious for the majority of the season.
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Affiliation(s)
| | | | | | | | - Thomas M Braun
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor
| | - Min Z Levine
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Maryna C Eichelberger
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Maryland
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Petrie JG, Ohmit SE, Johnson E, Truscon R, Monto AS. Persistence of Antibodies to Influenza Hemagglutinin and Neuraminidase Following One or Two Years of Influenza Vaccination. J Infect Dis 2015; 212:1914-22. [PMID: 26014800 DOI: 10.1093/infdis/jiv313] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 05/21/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Antibody titers to influenza hemagglutinin (HA) and neuraminidase (NA) surface antigens increase in the weeks after infection or vaccination, and decrease over time thereafter. However, the rate of decline has been debated. METHODS Healthy adults participating in a randomized placebo-controlled trial of inactivated (IIV) and live-attenuated (LAIV) influenza vaccines provided blood specimens immediately prior to vaccination and at 1, 6, 12, and 18 months postvaccination. Approximately half had also been vaccinated in the prior year. Rates of hemagglutination inhibition (HAI) and neuraminidase inhibition (NAI) titer decline in the absence of infection were estimated. RESULTS HAI and NAI titers decreased slowly over 18 months; overall, a 2-fold decrease in antibody titer was estimated to take >600 days for all HA and NA targets. Rates of decline were fastest among IIV recipients, explained in part by faster declines with higher peak postvaccination titer. IIV and LAIV recipients vaccinated 2 consecutive years exhibited significantly lower HAI titers following vaccination in the second year, but rates of persistence were similar. CONCLUSIONS Antibody titers to influenza HA and NA antigens may persist over multiple seasons; however, antigenic drift of circulating viruses may still necessitate annual vaccination. Vaccine seroresponse may be impaired with repeated vaccination.
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Affiliation(s)
- Joshua G Petrie
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Suzanne E Ohmit
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Emileigh Johnson
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Rachel Truscon
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Arnold S Monto
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
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Monto AS, Petrie JG, Cross RT, Johnson E, Liu M, Zhong W, Levine M, Katz JM, Ohmit SE. Antibody to Influenza Virus Neuraminidase: An Independent Correlate of Protection. J Infect Dis 2015; 212:1191-9. [PMID: 25858957 DOI: 10.1093/infdis/jiv195] [Citation(s) in RCA: 217] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 02/11/2015] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Laboratory correlates of influenza vaccine protection can best be identified by examining people who are infected despite vaccination. While the importance of antibody to viral hemagglutinin (HA) has long been recognized, the level of protection contributed independently by antibody to viral neuraminidase (NA) has not been determined. METHODS Sera from a controlled trial of the efficacies of inactivated influenza vaccine (IIV) and live attenuated influenza vaccine (LAIV) were tested by hemagglutination inhibition (HAI) assay, microneutralization (MN) assay, and a newly standardized lectin-based neuraminidase inhibition (NAI) assay. RESULTS The NAI assay detected a vaccine response in 37% of IIV recipients, compared with 77% and 67% of participants in whom responses were detected by the HAI and MN assays, respectively. For LAIV recipients, the NAI, HAI, and MN assays detected responses in 6%, 21%, and 17%, respectively. In IIV recipients, as NAI assay titers rose, the frequency of infection fell, similar to patterns seen with HAI and MN assays. HAI and MN assay titers were highly correlated, but NAI assay titers exhibited less of a correlation. Analyses suggested an independent role for NAI antibody in protection, which was similar in the IIV, LAIV, and placebo groups. CONCLUSIONS While NAI antibody is not produced to a large extent in response to current IIV, it appears to have an independent role in protection. As new influenza vaccines are developed, NA content should be considered. CLINICAL TRIALS REGISTRATION NCT00538512.
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Affiliation(s)
- Arnold S Monto
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Joshua G Petrie
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Rachel T Cross
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Emileigh Johnson
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
| | - Merry Liu
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Weimin Zhong
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Min Levine
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Jacqueline M Katz
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Suzanne E Ohmit
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor
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22
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Brown J, Excler JL, Kim JH. New prospects for a preventive HIV-1 vaccine. J Virus Erad 2015; 1:78-88. [PMID: 26523292 PMCID: PMC4625840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The immune correlates of risk analysis and recent non-human primate (NHP) challenge studies have generated hypotheses that suggest HIV-1 envelope may be essential and, perhaps, sufficient to induce protective antibody responses against HIV-1 acquisition at the mucosal entry. New prime-boost mosaic and conserved-sequence, together with replicating vector immunisation strategies aiming at inducing immune responses or greater breadth, as well as the development of immunogens inducing broadly neutralising antibodies and mucosal responses, should be actively pursued and tested in humans. Whether the immune correlates of risk identified in RV144 can be extended to other vaccines, other populations, or different modes and intensity of transmission, and against increasing HIV-1 genetic diversity, remains to be demonstrated. Although NHP challenge studies may guide vaccine development, human efficacy trials remain key for answering the critical questions leading to the development of a global HIV-1 vaccine for licensure.
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Affiliation(s)
| | - Jean-Louis Excler
- US Military HIV Research Program,
Bethesda,
MD,
USA,The Henry M Jackson Foundation for the Advancement of Military Medicine,
Bethesda,
MD,
USA,Corresponding author: Jean-Louis Excler,
US Military HIV Research Program,
6720-A Rockledge Drive, Suite 400Bethesda,
MD20817,
USA
| | - Jerome H Kim
- US Military HIV Research Program,
Walter Reed Army Institute of Research,
Silver Spring,
MD,
USA
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Abstract
While several impeding factors have limited Ebola vaccine development, the current epidemic has provided a surge which may lead to a record pace for a vaccine against Ebola. Consequently, multiple FDA trials are currently underway using two promising vaccine platforms; one has recently demonstrated durable immunity within non-human primates.
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Affiliation(s)
- Christopher L Cooper
- Molecular and Translational Sciences, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA
| | - Sina Bavari
- Molecular and Translational Sciences, U.S. Army Medical Research Institute of Infectious Diseases, Frederick, MD 21702, USA.
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Abstract
Because of the increasing incidence, geographic expansion and economic burden of dengue transmission, dengue poses major challenges to policy makers. A vaccine against dengue is urgently needed, but vaccine development has been hampered by the lack of an appropriate animal model, poor understanding of correlates of successful human immunity, the fear of immune enhancement, and viral interference in tetravalent combinations. The most suitable target epitopes for vaccines, as well as the role of nonstructural proteins remain elusive. The chimeric yellow fever bone-based live attenuated dengue vaccine is furthest in development, but initial efficacy results have been disappointing. Lessons learnt from this failure will affect the design of future trials, and increase the urgency to identify the best epitope and immune correlates. Dengue vaccine introduction will not be the only strategy to combat dengue, but needs to be "packaged" with novel vector control approaches, with community-based interventions to reduce the number of breeding sites, and reducing the case fatality rate by improving case management.
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Affiliation(s)
- Annelies Wilder-Smith
- Lee Kong Chian School of Medicine, Nanyang Technological University, Mandalay Road 11, Singapore, Singapore,
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25
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Abstract
PURPOSE OF REVIEW In this review, examples of recent progress in HIV-1 vaccine research are discussed. RECENT FINDINGS New insights from the immune correlates analyses of the RV144 efficacy trial have accelerated vaccine development with leads to follow in nonhuman primate studies and improved vaccine designs. Several new vaccine vector approaches offer promise in the exquisite control of acute infection and in improving the breadth of T-cell responses. New targets of broadly neutralizing antibodies (BnAbs) have been elucidated, and improved understanding of how the human host controls BnAb development have emerged from BnAb knock-in mice and from analyses of BnAb maturation and virus evolution in individuals followed from the time of HIV-1 transmission to BnAb induction. SUMMARY Based on these observations, it is clear that the development of a successful HIV-1 vaccine will require new vaccine approaches and iterative testing of immunogens in well designed animal and human trials.
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Affiliation(s)
- Barton F Haynes
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, NC 27710, USA.
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Abstract
The causative organism of plague is the bacterium Yersinia pestis. Advances in understanding the complex pathogenesis of plague infection have led to the identification of the F1- and V-antigens as key components of a next-generation vaccine for plague, which have the potential to be effective against all forms of the disease. Here we review the roles of F1- and V-antigens in the context of the range of virulence mechanisms deployed by Y. pestis, in order to develop a greater understanding of the protective immune responses required to protect against plague.
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Affiliation(s)
- E D Williamson
- Biomedical Sciences Department, Defence Science and Technology Laboratory, Salisbury, Wilts, UK.
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Hussain SF, Paterson Y. What is needed for effective antitumor immunotherapy? Lessons learned using Listeria monocytogenes as a live vector for HPV-associated tumors. Cancer Immunol Immunother 2005; 54:577-86. [PMID: 15650885 PMCID: PMC11033010 DOI: 10.1007/s00262-004-0600-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2004] [Accepted: 07/12/2004] [Indexed: 12/15/2022]
Abstract
As a vaccine vector, Listeria monocytogenes targets the innate immune system, resulting in a cytokine response that enhances antigen-presenting cell function as well as inducing a Th1 profile. It also enhances cell-mediated immunity by targeting antigen delivery in antigen-presenting cells to both the MHC class I pathway of exogenous presentation that activates CD8 T cells and the MHC class II pathway that processes antigen endogenously and presents it to CD4 T cells. In this review, we describe the development of vaccine constructs that target the human papillomavirus 16 (HPV-16) E7 antigen, and we characterize their effects on tumor regression as well as various immune parameters both innate and adaptive. In particular, we describe the effect on tumor angiogenesis, induction of antitumor suppressor factors like CD4+CD25+ T cells and regulatory cytokines TGF-beta and IL-10, homing and infiltration of antigen-specific CD8+ T cells to the tumor, and also effects of the vaccines on antigen-presenting cells, especially focusing on dendritic cell maturation and ability to influence tumor regression. We believe that the identification of several immune parameters that correlate with antitumor efficacy, and of some that have a negative correlation, may have wider application for other cancer immunotherapeutic approaches.
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Affiliation(s)
- S. Farzana Hussain
- Department of Microbiology, University of Pennsylvania School of Medicine, 323 Johnson Pavilion, 36th St. and Hamilton Walk, Philadelphia, PA 19104-6076 USA
| | - Yvonne Paterson
- Department of Microbiology, University of Pennsylvania School of Medicine, 323 Johnson Pavilion, 36th St. and Hamilton Walk, Philadelphia, PA 19104-6076 USA
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