1
|
Zhu L, Ji X, Wu Y, Xu W, Wang F, Huang X. Molecular characterization of Listeria monocytogenes strains isolated from imported food in China from 14 countries/regions, 2003-2018. Front Cell Infect Microbiol 2023; 13:1287564. [PMID: 38179422 PMCID: PMC10765603 DOI: 10.3389/fcimb.2023.1287564] [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: 09/02/2023] [Accepted: 12/04/2023] [Indexed: 01/06/2024] Open
Abstract
Listeria monocytogenes (Lm) is associated with severe foodborne infections and ubiquitous in the nature. Identification of characteristics of Lm transmission through trading of food products is essential for rapidly tracking Lm sources and controlling dissemination of listeriosis. In this study, a total of 44 Lm strains were isolated from food products originating from 14 countries/regions during 2003-2018 at the Shanghai port. The genomes of these Lm strains were sequenced by high-throughput sequencing. Multilocus sequence typing (MLST) analysis showed that 43 isolates were divided into 17 sequence types (STs). The distribution of STs was decentralized, with the dominant ST2 accounting for only 18.18% of the strains. The LM63 strain did not match with any of the existing STs. Core-genome MLST (cgMLST) analysis based on 1748 core genes categorized the 44 strains into 30 cgMLST types (CTs), with CT10153 and CT7892 as the most predominant CTs. Notably, LM63 and LM67 shared the same CT in the cgMLST analysis. The phylogenetic analysis based on single-copy homologous genes revealed that the 44 Lm strains were primarily classified into two lineages. The SNP analysis also indicated that these strains were roughly divided into two clades, with strains in the first clade mainly collected earlier than those in the second clade, which were predominantly collected from 2010 onwards. The analysis using the virulence factor database (VFDB) indicated that the virulence gene inlJ was the most prevalent among these 44 strains. Notably, ddrA, msbA, and sugC were enriched in this dataset, requiring further clarification of their roles in Listeria through future studies. These results might provide a clue for understanding of the global epidemiology and surveillance of Lm and present insights for implementing effective measures to reduce or prevent Listeria contamination outbreaks in imported food products.
Collapse
Affiliation(s)
- Liying Zhu
- Technical Center for Animal, Plant and Food Inspection and Quarantine of Shanghai Customs, Shanghai, China
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) and Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Frontiers Science Center of Pathogenic Microorganisms and Infection, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xuejiao Ji
- Shanghai Clinical Research Center for Infectious Disease (tuberculosis), Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuan Wu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) and Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Frontiers Science Center of Pathogenic Microorganisms and Infection, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Wei Xu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) and Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Frontiers Science Center of Pathogenic Microorganisms and Infection, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Feifei Wang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) and Shanghai Institute of Infectious Disease and Biosecurity, Shanghai Frontiers Science Center of Pathogenic Microorganisms and Infection, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xinxin Huang
- Technical Center for Animal, Plant and Food Inspection and Quarantine of Shanghai Customs, Shanghai, China
| |
Collapse
|
2
|
Bacteria and bacterial derivatives as delivery carriers for immunotherapy. Adv Drug Deliv Rev 2022; 181:114085. [PMID: 34933064 DOI: 10.1016/j.addr.2021.114085] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/16/2021] [Accepted: 12/14/2021] [Indexed: 02/08/2023]
Abstract
There is growing interest in the role of microorganisms in human health and disease, with evidence showing that new types of biotherapy using engineered bacterial therapeutics, including bacterial derivatives, can address specific mechanisms of disease. The complex interactions between microorganisms and metabolic/immunologic pathways underlie many diseases with unmet medical needs, suggesting that targeting these interactions may improve patient treatment. Using tools from synthetic biology and chemical engineering, non-pathogenic bacteria or bacterial products can be programmed and designed to sense and respond to environmental signals to deliver therapeutic effectors. This review describes current progress in biotherapy using live bacteria and their derivatives to achieve therapeutic benefits against various diseases.
Collapse
|
3
|
Howell LM, Forbes NS. Bacteria-based immune therapies for cancer treatment. Semin Cancer Biol 2021; 86:1163-1178. [PMID: 34547442 DOI: 10.1016/j.semcancer.2021.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 09/03/2021] [Accepted: 09/12/2021] [Indexed: 12/23/2022]
Abstract
Engineered bacterial therapies that target the tumor immune landscape offer a new class of cancer immunotherapy. Salmonella enterica and Listeria monocytogenes are two species of bacteria that have been engineered to specifically target tumors and serve as delivery vessels for immunotherapies. Therapeutic bacteria have been engineered to deliver cytokines, gene silencing shRNA, and tumor associated antigens that increase immune activation. Bacterial therapies stimulate both the innate and adaptive immune system, change the immune dynamics of the tumor microenvironment, and offer unique strategies for targeting tumors. Bacteria have innate adjuvant properties, which enable both the delivered molecules and the bacteria themselves to stimulate immune responses. Bacterial immunotherapies that deliver cytokines and tumor-associated antigens have demonstrated clinical efficacy. Harnessing the diverse set of mechanisms that Salmonella and Listeria use to alter the tumor-immune landscape has the potential to generate many new and effective immunotherapies.
Collapse
Affiliation(s)
- Lars M Howell
- Department of Chemical Engineering, University of Massachusetts, Amherst, United States
| | - Neil S Forbes
- Department of Chemical Engineering, University of Massachusetts, Amherst, United States.
| |
Collapse
|
4
|
Dafni U, Martín-Lluesma S, Balint K, Tsourti Z, Vervita K, Chenal J, Coukos G, Zaman K, Sarivalasis A, Kandalaft LE. Efficacy of cancer vaccines in selected gynaecological breast and ovarian cancers: A 20-year systematic review and meta-analysis. Eur J Cancer 2020; 142:63-82. [PMID: 33221598 DOI: 10.1016/j.ejca.2020.10.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/29/2020] [Accepted: 10/08/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Therapeutic cancer vaccination is an area of interest, even though promising efficacy has not been demonstrated so far. DESIGN A systematic review and meta-analysis was conducted to evaluate vaccines' efficacy on breast cancer (BC) and ovarian cancer (OC) patients. Our search was based on the PubMed electronic database, from 1st January 2000 to 4th February 2020. OBJECTIVE response rate (ORR) was the primary end-point of interest, while progression-free survival (PFS), overall survival (OS) and toxicity were secondary end-points. Analysis was performed separately for BC and OC patients. Pooled ORRs were estimated by fixed or random effects models, depending on the detected degree of heterogeneity, for all studies with more than five patients. Subgroup analyses by vaccine type and treatment schema as well as sensitivity analyses, were implemented. RESULTS Among 315 articles initially identified, 67 were eligible for our meta-analysis (BC: 46, 1698 patients; OC: 32, 426 patients; where both BC/OC in 11). Dendritic-cell and peptide vaccines were found in more studies, 6/10 BC and 10/13 OC studies, respectively. In our primary BC analysis (21 studies; 428 patients), the pooled ORR estimate was 9% (95%CI[5%,13%]). The primary OC analysis (12 studies; 182 patients), yielded pooled ORR estimate of 4% (95%CI[1%,7%]). Similar were the results derived in sensitivity analyses. No statistically significant differences were detected by vaccine type or treatment schema. Median PFS was 2.6 months (95% confidence interval (CI)[1.9,2.9]) and 13.0 months (95%CI[8.5,16.3]) for BC and OC respectively, while corresponding median OS was 24.8 months (95%CI[15.0,46.0]) and 39.0 months (95%CI[31.0,49.0]). In almost all cases, the observed toxicity was only moderate. CONCLUSION Despite their modest results in terms of ORR, therapeutic vaccines in the last 20 years display relatively long survival rates and low toxicity. Since a plethora of different approaches have been tested, a better understanding of the underlying mechanisms is needed in order to further improve vaccine efficacy.
Collapse
Affiliation(s)
- U Dafni
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland; Faculty of Nursing, National and Kapodistrian University of Athens, Athens, Greece
| | - S Martín-Lluesma
- Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Boadilla Del Monte, Madrid, 28668, Spain
| | - K Balint
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland
| | - Z Tsourti
- Scientific Research Consulting Hellas, Statistics Center, Athens, Greece
| | - K Vervita
- Scientific Research Consulting Hellas, Statistics Center, Athens, Greece
| | - J Chenal
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland
| | - G Coukos
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland; Ludwig Institute for Cancer Research, University of Lausanne, Lausanne, Switzerland
| | - K Zaman
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland
| | - A Sarivalasis
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland
| | - L E Kandalaft
- Department of Oncology, CHUV, University of Lausanne, Lausanne, Switzerland; Ludwig Institute for Cancer Research, University of Lausanne, Lausanne, Switzerland.
| |
Collapse
|
5
|
Becattini S, Littmann ER, Seok R, Amoretti L, Fontana E, Wright R, Gjonbalaj M, Leiner IM, Plitas G, Hohl TM, Pamer EG. Enhancing mucosal immunity by transient microbiota depletion. Nat Commun 2020; 11:4475. [PMID: 32901029 PMCID: PMC7479140 DOI: 10.1038/s41467-020-18248-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 08/04/2020] [Indexed: 02/08/2023] Open
Abstract
Tissue resident memory CD8+ T cells (Trm) are poised for immediate reactivation at sites of pathogen entry and provide optimal protection of mucosal surfaces. The intestinal tract represents a portal of entry for many infectious agents; however, to date specific strategies to enhance Trm responses at this site are lacking. Here, we present TMDI (Transient Microbiota Depletion-boosted Immunization), an approach that leverages antibiotic treatment to temporarily restrain microbiota-mediated colonization resistance, and favor intestinal expansion to high densities of an orally-delivered Listeria monocytogenes strain carrying an antigen of choice. By augmenting the local chemotactic gradient as well as the antigenic load, this procedure generates a highly expanded pool of functional, antigen-specific intestinal Trm, ultimately enhancing protection against infectious re-challenge in mice. We propose that TMDI is a useful model to dissect the requirements for optimal Trm responses in the intestine, and also a potential platform to devise novel mucosal vaccination approaches.
Collapse
Affiliation(s)
- Simone Becattini
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA.
| | - Eric R Littmann
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Duchossois Family Institute, University of Chicago, Chicago, IL, 60606, USA
| | - Ruth Seok
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Luigi Amoretti
- Lucille Castori Center for Microbes Inflammation and Cancer, Molecular Microbiology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Emily Fontana
- Lucille Castori Center for Microbes Inflammation and Cancer, Molecular Microbiology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Roberta Wright
- Lucille Castori Center for Microbes Inflammation and Cancer, Molecular Microbiology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Mergim Gjonbalaj
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Ingrid M Leiner
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Duchossois Family Institute, University of Chicago, Chicago, IL, 60606, USA
| | - George Plitas
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Ludwig Center at Memorial Sloan Kettering Cancer Center, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Breast Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Tobias M Hohl
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
| | - Eric G Pamer
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Lucille Castori Center for Microbes Inflammation and Cancer, Molecular Microbiology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, USA
- Duchossois Family Institute, University of Chicago, Chicago, IL, 60606, USA
| |
Collapse
|
6
|
Moscoso M, García P, Cabral MP, Rumbo C, Bou G. A D-Alanine auxotrophic live vaccine is effective against lethal infection caused by Staphylococcus aureus. Virulence 2018; 9:604-620. [PMID: 29297750 PMCID: PMC5955480 DOI: 10.1080/21505594.2017.1417723] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Staphylococcus aureus infections are becoming a major global health issue due to the rapid emergence of multidrug-resistant strains. Therefore, there is an urgent need to develop an effective vaccine to prevent and control these infections. In order to develop a universal immunization strategy, we constructed a mutant derivative of S. aureus 132 which lacks the genes involved in D-alanine biosynthesis, a structural component of cell wall peptidoglycan. This unmarked deletion mutant requires the exogenous addition of D-alanine for in vitro growth. The aim of this study was to examine the ability of this D-alanine auxotroph to induce protective immunity against staphylococcal infection. Our findings demonstrate that this deletion mutant is highly attenuated, elicits a protective immune response in mice and generates cross-reactive antibodies. Moreover, the D-alanine auxotroph was completely eliminated from the blood of mice after its intravenous or intraperitoneal injection. We determined that the protective effect was dependent on antibody production since the adoptive transfer of immune serum into naïve mice resulted in effective protection against S. aureus bacteremia. In addition, splenocytes from mice immunized with the D-alanine auxotroph vaccine showed specific production of IL-17A after ex vivo stimulation. We conclude that this D-alanine auxotroph protects mice efficiently against virulent staphylococcal strains through the combined action of antibodies and IL-17A, and therefore constitutes a promising vaccine candidate against staphylococcal disease, for which no licensed vaccine is available yet.
Collapse
Affiliation(s)
- Miriam Moscoso
- a Department of Microbiology , University Hospital A Coruña (CHUAC) - Biomedical Research Institute A Coruña (INIBIC) , A Coruña , Spain
| | - Patricia García
- a Department of Microbiology , University Hospital A Coruña (CHUAC) - Biomedical Research Institute A Coruña (INIBIC) , A Coruña , Spain
| | - Maria P Cabral
- a Department of Microbiology , University Hospital A Coruña (CHUAC) - Biomedical Research Institute A Coruña (INIBIC) , A Coruña , Spain
| | - Carlos Rumbo
- a Department of Microbiology , University Hospital A Coruña (CHUAC) - Biomedical Research Institute A Coruña (INIBIC) , A Coruña , Spain.,b International Research Center in Critical Raw Materials-ICCRAM, University of Burgos , Burgos , Spain.,c Advanced Materials, Nuclear Technology and Applied Bio/Nanotechnology. Consolidated Research Unit UIC-154. Castilla y León. Spain. University of Burgos. Hospital del Rey s/n , Burgos , Spain
| | - Germán Bou
- a Department of Microbiology , University Hospital A Coruña (CHUAC) - Biomedical Research Institute A Coruña (INIBIC) , A Coruña , Spain
| |
Collapse
|
7
|
Bolhassani A, Naderi N, Soleymani S. Prospects and progress of Listeria-based cancer vaccines. Expert Opin Biol Ther 2017; 17:1389-1400. [PMID: 28823183 DOI: 10.1080/14712598.2017.1366446] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION The development of an effective therapeutic vaccine to induce cancer-specific immunity remains problematic. Recently, a species of intracellular pathogen known as Listeria monocytogenes (Lm) has been used to transfer DNA, RNA and proteins into tumour cells as well as elicit an immune response against tumour-specific antigens. Areas covered: Herein, the authors provide the mechanisms of different Listeria monocytogenes strains, which are potential therapeutic cancer vaccine vectors, in addition to their preclinical and clinical development. They also speculate on the future of Lm-based tumour immunotherapies. The article is based on literature published on PubMed and data reported in clinical trials. Expert opinion: Attenuated strains of Listeria monocytogenes have safely been applied as therapeutic bacterial vectors for the delivery of cancer vaccines. These vectors stimulate MHCI and MHCII pathways as well as the proliferation of antigen-specific T lymphocytes. Several preclinical studies have demonstrated the potency of Lm in intracellular gene and protein delivery in vitro and in vivo. They have also indicated safety and efficiacy in clinical trials. Readers should be aware that the ability of attenuated Lm strains to induce potent immune responses depends on the type of deleted or inactivated Lm virulent gene or genes.
Collapse
Affiliation(s)
- Azam Bolhassani
- a Department of Hepatitis and AIDS , Pasteur Institute of Iran , Tehran , Iran
| | - Niloofar Naderi
- a Department of Hepatitis and AIDS , Pasteur Institute of Iran , Tehran , Iran
| | - Sepehr Soleymani
- a Department of Hepatitis and AIDS , Pasteur Institute of Iran , Tehran , Iran
| |
Collapse
|
8
|
Bitrus Y, Andrew JN, Owolodun OA, Luka PD, Umaru DA. The reoccurrence of H5N1 outbreaks necessitates the development of safe and effective influenza vaccine technologies for the prevention and control of avian influenza in Sub-Saharan Africa. ACTA ACUST UNITED AC 2015. [DOI: 10.5897/bmbr2015.0246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
9
|
da Silva AJ, Zangirolami TC, Novo-Mansur MTM, Giordano RDC, Martins EAL. Live bacterial vaccine vectors: an overview. Braz J Microbiol 2015; 45:1117-29. [PMID: 25763014 PMCID: PMC4323283 DOI: 10.1590/s1517-83822014000400001] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 04/17/2014] [Indexed: 02/07/2023] Open
Abstract
Genetically attenuated microorganisms, pathogens, and some commensal bacteria can be engineered to deliver recombinant heterologous antigens to stimulate the host immune system, while still offering good levels of safety. A key feature of these live vectors is their capacity to stimulate mucosal as well as humoral and/or cellular systemic immunity. This enables the use of different forms of vaccination to prevent pathogen colonization of mucosal tissues, the front door for many infectious agents. Furthermore, delivery of DNA vaccines and immune system stimulatory molecules, such as cytokines, can be achieved using these special carriers, whose adjuvant properties and, sometimes, invasive capacities enhance the immune response. More recently, the unique features and versatility of these vectors have also been exploited to develop anti-cancer vaccines, where tumor-associated antigens, cytokines, and DNA or RNA molecules are delivered. Different strategies and genetic tools are constantly being developed, increasing the antigenic potential of agents delivered by these systems, opening fresh perspectives for the deployment of vehicles for new purposes. Here we summarize the main characteristics of the different types of live bacterial vectors and discuss new applications of these delivery systems in the field of vaccinology.
Collapse
Affiliation(s)
- Adilson José da Silva
- Departamento de Engenharia Química Universidade Federal de São Carlos São CarlosSP Brazil Departamento de Engenharia Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Teresa Cristina Zangirolami
- Departamento de Engenharia Química Universidade Federal de São Carlos São CarlosSP Brazil Departamento de Engenharia Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Maria Teresa Marques Novo-Mansur
- Departamento de Genética e Evolução Universidade Federal de São Carlos São CarlosSP Brazil Departamento de Genética e Evolução, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Roberto de Campos Giordano
- Departamento de Engenharia Química Universidade Federal de São Carlos São CarlosSP Brazil Departamento de Engenharia Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Elizabeth Angélica Leme Martins
- Centro de Biotecnologia Instituto Butantan São PauloSP Brazil Centro de Biotecnologia, Instituto Butantan, São Paulo, SP, Brazil
| |
Collapse
|
10
|
Liang ZZ, Sherrid AM, Wallecha A, Kollmann TR. Listeria monocytogenes: a promising vehicle for neonatal vaccination. Hum Vaccin Immunother 2014; 10:1036-46. [PMID: 24513715 DOI: 10.4161/hv.27999] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Vaccination as a medical intervention has proven capable of greatly reducing the suffering from childhood infectious disease. However, newborns and infants in particular are age groups for whom adequate vaccine-mediated protection is still largely lacking. With the challenges that the neonatal immune system faces and the required highest level of stringency for safety, designing vaccines for early life in general and the newborn in particular poses great difficulty. Nevertheless, recent advances in our understanding of neonatal immunity and its responses to vaccines and adjuvants suggest that neonatal vaccination is a task fully within reach. Among the most promising developments in neonatal vaccination is the use of Listeria monocytogenes (Lm) as a delivery platform. In this review, we will outline key properties of Lm that make it such an ideal neonatal and early life vaccine vehicle, and also discuss potential constraints of Lm as a vaccine delivery platform.
Collapse
Affiliation(s)
- Zach Z Liang
- Division of Infectious and Immunological Diseases; Department of Pediatrics; University of British Columbia; Child and Family Research Institute; Vancouver, BC Canada
| | - Ashley M Sherrid
- Division of Infectious and Immunological Diseases; Department of Pediatrics; University of British Columbia; Child and Family Research Institute; Vancouver, BC Canada
| | | | - Tobias R Kollmann
- Division of Infectious and Immunological Diseases; Department of Pediatrics; University of British Columbia; Child and Family Research Institute; Vancouver, BC Canada
| |
Collapse
|
11
|
Development of a Listeria monocytogenes-based vaccine against hepatocellular carcinoma. Oncogene 2011; 31:2140-52. [PMID: 21927025 DOI: 10.1038/onc.2011.395] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Live attenuated Listeria monocytogenes (LM) is a promising bacterial vector able to induce a T-cell response to tumor-associated antigens and demonstrates great potential for use in vaccine development. A novel recombinant LM-based vaccine (Lmdd (LM ΔdalΔdat)-MPFG (multiple peptide fusing genes)) was developed with the ability to express and secrete hepatocellular carcinoma (HCC)-related tumor-associated antigens fragments due to the insertion of hepatitis B virus (HBV)-X protein (HBx)-derived epitopes HBx(52-60) and HBx(140-148), the universal T-helper epitope, alpha-fetoprotein (AFP) epitope AFP(158-166), and melanoma antigen gene (MAGE)-3(271-279) into the HBV core protein. Following immunization with the Lmdd-MPFG vaccine, macrophages exhibited uptake of the bacteria; the vaccine was then nearly cleared 3 days after the first administration. It disappeared even more quickly following subsequent vaccinations. However, recombinant Lmdd-MPFG allowed for the full development of an antitumor response towards the human leukocyte antigen (HLA)-A0201 epitopes of MPFG. Each epitope stimulated an augmented T-cell proliferation and enhanced the supernatant level of interferon (IFN)-γ in vitro. In addition, IFN-γ-producing CD8(+) T cells as well as in vivo cytolytic activity were significantly increased in HLA-A2 transgenic mice. Additionally, the Lmdd-MPFG developed a strong antitumor response, as indicated by the significant resistance of immunized mice to MPFG-positive Hepa1-6 cell challenge in both a prophylactic and therapeutic setting. Tumor regression was accompanied by an enhanced cytotoxic T lymphocyte response and a decrease of regulatory T cells in the tumor. Collectively, these results suggest that utilizing attenuated LM as a vaccine vector, able to carry the MPFG gene, presents a potentially feasible strategy for prevention of HCC.
Collapse
|
12
|
Culligan EP, Hill C, Sleator RD. Probiotics and gastrointestinal disease: successes, problems and future prospects. Gut Pathog 2009; 1:19. [PMID: 19930635 PMCID: PMC2789095 DOI: 10.1186/1757-4749-1-19] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Accepted: 11/23/2009] [Indexed: 02/07/2023] Open
Abstract
Gastrointestinal disease is a major cause of morbidity and mortality worldwide each year. Treatment of chronic inflammatory gastrointestinal conditions such as ulcerative colitis and Crohn's disease is difficult due to the ambiguity surrounding their precise aetiology. Infectious gastrointestinal diseases, such as various types of diarrheal disease are also becoming increasingly difficult to treat due to the increasing dissemination of antibiotic resistance among microorganisms and the emergence of the so-called 'superbugs'. Taking into consideration these problems, the need for novel therapeutics is essential. Although described for over a century probiotics have only been extensively researched in recent years. Their use in the treatment and prevention of disease, particularly gastrointestinal disease, has yielded many successful results, some of which we outline in this review. Although promising, many probiotics are hindered by inherent physiological and technological weaknesses and often the most clinically promising strains are unusable. Consequently we discuss various strategies whereby probiotics may be engineered to create designer probiotics. Such innovative approaches include; a receptor mimicry strategy to create probiotics that target specific pathogens and toxins, a patho-biotechnology approach using pathogen-derived genes to create more robust probiotic stains with increased host and processing-associated stress tolerance profiles and meta-biotechnology, whereby, functional metagenomics may be used to identify novel genes from diverse and vastly unexplored environments, such as the human gut, for use in biotechnology and medicine.
Collapse
Affiliation(s)
- Eamonn P Culligan
- Alimentary Pharmabiotic Centre, University College Cork, Western Road, Cork, Ireland
- Department of Microbiology, University College Cork, Western Road, Cork, Ireland
| | - Colin Hill
- Alimentary Pharmabiotic Centre, University College Cork, Western Road, Cork, Ireland
- Department of Microbiology, University College Cork, Western Road, Cork, Ireland
| | - Roy D Sleator
- Department of Biological Sciences, Cork Institute of Technology, Rossa Avenue, Bishopstown, Cork, Ireland
- Alimentary Pharmabiotic Centre, University College Cork, Western Road, Cork, Ireland
| |
Collapse
|
13
|
Construction and characterization of an attenuated Listeria monocytogenes strain for clinical use in cancer immunotherapy. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2008; 16:96-103. [PMID: 19020110 DOI: 10.1128/cvi.00274-08] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Listeria monocytogenes has been exploited previously as a vaccine vector for the delivery of heterologous proteins such as tumor-specific antigens for active cancer immunotherapy. However, for effective use of live vector in clinics, safety is a major concern. In the present study, we describe an irreversibly attenuated and highly immunogenic L. monocytogenes platform, the L. monocytogenes dal-, dat-, and actA-deleted strain that expresses the human prostate-specific antigen (PSA) using an antibiotic resistance marker-free plasmid (the dal dat DeltaactA 142 strain expressing PSA). Despite limited in vivo survival, the dal dat DeltaactA 142 strain was able to elicit efficient immune responses required for tumor clearance. Our results showed that immunization of mice with the dal dat DeltaactA 142 strain caused the regression of the tumors established by the prostate adenocarcinoma cell line expressing PSA. An evaluation of immunologic potency indicated that the dal dat DeltaactA 142 strain elicits a high frequency of PSA-specific immune responses. Interestingly, immunization with the dal dat DeltaactA 142 strain induced significant infiltration of PSA-specific T cells in the intratumoral milieu. Collectively, our data suggest that the dal dat DeltaactA 142 strain is a safe and potent vector for clinical use and that this platform may be further exploited as a potential candidate to express other single or multiple antigens for cancer immunotherapy.
Collapse
|
14
|
Selected prfA* mutations in recombinant attenuated Listeria monocytogenes strains augment expression of foreign immunogens and enhance vaccine-elicited humoral and cellular immune responses. Infect Immun 2008; 76:3439-50. [PMID: 18474644 DOI: 10.1128/iai.00245-08] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
While recombinant Listeria monocytogenes strains can be explored as vaccine candidates, it is important to develop attenuated but highly immunogenic L. monocytogenes vaccine vectors. Here, prfA* mutations selected on the basis of upregulated expression of L. monocytogenes PrfA-dependent genes and proteins were assessed to determine their abilities to augment expression of foreign immunogens in recombinant L. monocytogenes vectors and therefore enhance vaccine-elicited immune responses (a prfA* mutation is a mutation that results in constitutive overexpression of PrfA and PrfA-dependent virulence genes; the asterisk distinguishes the mutation from inactivation or stop mutations). A total of 63 recombinant L. monocytogenes vaccine vectors expressing seven individual viral or bacterial immunogens each in nine different L. monocytogenes strains carrying wild-type prfA or having prfA* mutations were constructed and investigated. Mutations selected on the basis of increased PrfA activation in recombinant L. monocytogenes prfA* vaccine vectors augmented expression of seven individual protein immunogens remarkably. Consistently, prime and boost vaccination studies with mice indicated that the prfA(G155S) mutation in recombinant L. monocytogenes DeltaactA prfA* strains enhanced vaccine-elicited cellular immune responses. Surprisingly, the prfA(G155S) mutation was found to enhance vaccine-elicited humoral immune responses as well. The highly immunogenic recombinant L. monocytogenes DeltaactA prfA* vaccine strains were as attenuated as the recombinant parent L. monocytogenes DeltaactA vaccine vector. Thus, recombinant attenuated L. monocytogenes DeltaactA prfA* vaccine vectors potentially are better antimicrobial and anticancer vaccines.
Collapse
|
15
|
Schoen C, Loeffler DI, Frentzen A, Pilgrim S, Goebel W, Stritzker J. Listeria monocytogenes as novel carrier system for the development of live vaccines. Int J Med Microbiol 2008; 298:45-58. [DOI: 10.1016/j.ijmm.2007.09.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
16
|
Abstract
The immunostimulatory characteristics and intracellular niche of Listeria monocytogenes make it uniquely suitable for use as a live bacterial vaccine vector. Preclinical results supporting this idea, and current strategies to induce beneficial cell-mediated immunity to both infectious diseases and cancer with this vector, are discussed in this review.
Collapse
Affiliation(s)
- Kevin W Bruhn
- Department of Medicine, Division of Dermatology, Los Angeles Biomedical Research Institute at Harbor/UCLA Medical Center, 1124 W. Carson St., Torrance, CA 90502, USA.
| | | | | |
Collapse
|
17
|
Hara H, Kawamura I, Nomura T, Tominaga T, Tsuchiya K, Mitsuyama M. Cytolysin-dependent escape of the bacterium from the phagosome is required but not sufficient for induction of the Th1 immune response against Listeria monocytogenes infection: distinct role of Listeriolysin O determined by cytolysin gene replacement. Infect Immun 2007; 75:3791-801. [PMID: 17517863 PMCID: PMC1951982 DOI: 10.1128/iai.01779-06] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Listeria monocytogenes evades the antimicrobial mechanisms of macrophages by escaping from the phagosome into the cytosolic space via a unique cytolysin that targets the phagosomal membrane, listeriolysin O (LLO), encoded by hly. Gamma interferon (IFN-gamma), which is known to play a pivotal role in the induction of Th1-dependent protective immunity in mice, appears to be produced, depending on the bacterial virulence factor. To determine whether the LLO molecule (the major virulence factor of L. monocytogenes) is indispensable or the escape of bacteria from the phagosome is sufficient to induce IFN-gamma production, we first constructed an hly-deleted mutant of L. monocytogenes and then established isogenic L. monocytogenes mutants expressing LLO or ivanolysin O (ILO), encoded by ilo from Listeria ivanovii. LLO-expressing L. monocytogenes was highly capable of inducing IFN-gamma production and Listeria-specific protective immunity, while the hly-deleted mutant was not. In contrast, the level of IFN-gamma induced by ILO-expressing L. monocytogenes was significantly lower both in vitro and in vivo, despite the ability of this strain to escape the phagosome and the intracellular multiplication at a level equivalent to that of LLO-expressing L. monocytogenes. Only a negligible level of protective immunity was induced in mice against challenge with LLO- and ILO-expressing L. monocytogenes. These results clearly show that escape of the bacterium from the phagosome is a prerequisite but is not sufficient for the IFN-gamma-dependent Th1 response against L. monocytogenes, and some distinct molecular nature of LLO is indispensable for the final induction of IFN-gamma that is essentially required to generate a Th1-dependent immune response.
Collapse
Affiliation(s)
- Hideki Hara
- Department of Microbiology, Kyoto University Graduate School of Medicine, Yoshida-konoecho, Sakyo-ku, Kyoto 606-8501, Japan
| | | | | | | | | | | |
Collapse
|
18
|
Li Z, Zhao X, Zhou C, Gu B, Frankel FR. A truncated Bacillus subtilis dal gene with a 3' ssrA gene tag regulates the growth and virulence of racemase-deficient Listeria monocytogenes. MICROBIOLOGY-SGM 2007; 152:3091-3102. [PMID: 17005988 DOI: 10.1099/mic.0.28994-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Listeria monocytogenes (Lm) is a Gram-positive intracellular pathogen that can elicit strong cellular immunity. An attenuated strain (Lmdd) with deletions in two genes (dal and dat) required for d-alanine synthesis and viability has been shown to induce long-lived protective systemic and mucosal immune responses in mice when administered in the presence of the required amino acid. To bypass the necessity for exogenous d-alanine without compromising the safety of the original strain, the defect of Lmdd was complemented with a heterologous Bacillus subtilis dal gene, and the effects of truncating the upstream region of the gene on its transcription efficiency and of modifying its protein product with an ssrA tag at the 3'-terminus were examined. The strains with 551 bp and 80 bp upstream regions showed high levels of transcription and grew without d-alanine. The strains with the shortest upstream regions, 48 bp and 18 bp, showed greatly decreased levels of transcription and failed to grow in the absence of d-alanine. Addition of an ssrA tag to the longer genes resulted in a somewhat altered growth pattern in media and a reduced plaque size on L2 fibroblasts. These bacteria contained low levels of racemase protein and reduced free pools of d-alanine. One of the strains tested further, Lmdd/pA80S, was rapidly cleared from the spleens of infected mice but nevertheless induced a strong immune response that protected mice against challenge by wild-type L. monocytogenes. These bacteria can thus induce immune responses in mice comparable to the original Lmdd strain, but without the need for exogenous d-alanine, and may have use as a live vaccine vector against infectious diseases and cancers.
Collapse
Affiliation(s)
- Zhongxia Li
- Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Xinyan Zhao
- Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Chenghui Zhou
- Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Baiyan Gu
- Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Fred R Frankel
- Department of Microbiology, School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| |
Collapse
|
19
|
Abstract
Given the increasing commercial and clinical relevance of probiotic cultures, improving their stress tolerance profile and ability to overcome the physiochemical defences of the host is an important biological goal. Pathogenic bacteria have evolved sophisticated strategies to overcome host defences, interact with the immune system and interfere with essential host systems. We coin the term 'patho-biotechnology' to describe the exploitation of these valuable traits in biotechnology and biomedicine. This approach shows promise for the design of more technologically robust and effective probiotic cultures with improved biotechnological and clinical applications as well as the development of novel vaccine and drug delivery platforms.
Collapse
|
20
|
Zhao X, Zhang M, Li Z, Frankel FR. Vaginal protection and immunity after oral immunization of mice with a novel vaccine strain of Listeria monocytogenes expressing human immunodeficiency virus type 1 gag. J Virol 2006; 80:8880-90. [PMID: 16940500 PMCID: PMC1563909 DOI: 10.1128/jvi.00894-06] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Natural transmission of human immunodeficiency virus (HIV) occurs at mucosal surfaces. During acute infection, intestinal and other mucosae are preferential sites of virus replication and rapidly become depleted of CD4(+) T cells. Therefore, mucosal immunity may be critical to control both initial infection and the massive early spread of virus. An attenuated D-alanine-requiring strain of the oral intracellular microorganism Listeria monocytogenes expressing HIV type 1 gag was shown to induce protective cell-mediated immunity in mice against viruses that express HIV gag when immunization occurs in the presence of a transient supply of D-alanine. In this study, we examined the efficacy of new attenuated strains that are able to synthesize d-alanine from a heterologous dal gene tightly regulated by an actA-promoted resolvase recombination system. In the absence of d-alanine, Gag-specific cytotoxic T lymphocytes (CTLs) were induced systemically after intravenous immunization, and one strain, Lmdd-gag/pARS, induced strong dose-dependent Gag-specific CTLs after oral immunization. A significant level of Gag-specific CD8(+) T cells was induced in the mucosal-associated lymphoid tissues (MALTs). Upon intravaginal challenge of these orally immunized mice with recombinant vaccinia virus (rVV) expressing HIV gag, gamma interferon- and tumor necrosis factor alpha-secreting Gag-specific CD8(+) T cells were dramatically increased in the spleen and MALTs. Oral immunization with Lmdd-gag/pARS led to complete protection against vaginal challenge by a homologous clade B gag-expressing rVV. In addition, strong cross-clade protection was seen against clades A and C and partial protection against clade G gag-expressing rVV. These results suggest that Lmdd-gag/pARS may be considered as a novel vaccine candidate for use against HIV/AIDS.
Collapse
Affiliation(s)
- Xinyan Zhao
- Department of Microbiology, University of Pennsylvania School of Medicine, 203C Johnson Pavilion, 3610 Hamilton Walk, Philadelphia, PA 19104, USA
| | | | | | | |
Collapse
|
21
|
Dubail I, Bigot A, Lazarevic V, Soldo B, Euphrasie D, Dupuis M, Charbit A. Identification of an essential gene of Listeria monocytogenes involved in teichoic acid biogenesis. J Bacteriol 2006; 188:6580-91. [PMID: 16952950 PMCID: PMC1595501 DOI: 10.1128/jb.00771-06] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Listeria monocytogenes is a facultative intracellular gram-positive bacterium responsible for severe opportunistic infections in humans and animals. We had previously identified a gene encoding a putative UDP-N-acetylglucosamine 2-epimerase, a precursor of the teichoic acid linkage unit, in the genome of L monocytogenes strain EGD-e. This gene, now designated lmo2537, encodes a protein that shares 62% identity with the cognate epimerase MnaA of Bacillus subtilis and 55% identity with Cap5P of Staphylococcus aureus. Here, we addressed the role of lmo2537 in L. monocytogenes pathogenesis by constructing a conditional knockout mutant. The data presented here demonstrate that lmo2537 is an essential gene of L. monocytogenes that is involved in teichoic acid biogenesis. In vivo, the conditional mutant is very rapidly eliminated from the target organs of infected mice and thus is totally avirulent.
Collapse
Affiliation(s)
- Iharilalao Dubail
- Faculté de Médecine Necker, 156, Rue de Vaugirard, 75730 Paris Cedex 15, France
| | | | | | | | | | | | | |
Collapse
|
22
|
Sleator RD, Hill C. Patho-biotechnology: using bad bugs to do good things. Curr Opin Biotechnol 2006; 17:211-6. [PMID: 16459072 DOI: 10.1016/j.copbio.2006.01.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2005] [Revised: 11/16/2005] [Accepted: 01/20/2006] [Indexed: 12/27/2022]
Abstract
Pathogenic bacteria have evolved sophisticated strategies to overcome host defences, to interact with the immune system and to interfere with essential host systems. We coin the term 'patho-biotechnology' to describe the exploitation of these valuable traits in biotechnology, medicine and food. This approach shows promise for the development of novel vaccine and drug delivery systems, as well as for the design of more technologically robust and effective probiotic cultures with improved biotechnological and clinical applications. The genetic tractability of Listeria monocytogenes, the availability of the complete genome sequence of this intracellular pathogen, its ability to cope with stress, and its ability to traverse the gastrointestinal tract and induce a strong cellular immune response make L. monocytogenes an ideal model organism for demonstrating the patho-biotechnology concept.
Collapse
Affiliation(s)
- Roy D Sleator
- Department of Microbiology & Alimentary Pharmabiotic Centre, University College, Cork, Ireland
| | | |
Collapse
|