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Pandey KK, Sahoo BR, Pattnaik AK. Protein Nanoparticles as Vaccine Platforms for Human and Zoonotic Viruses. Viruses 2024; 16:936. [PMID: 38932228 PMCID: PMC11209504 DOI: 10.3390/v16060936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/31/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
Vaccines are one of the most effective medical interventions, playing a pivotal role in treating infectious diseases. Although traditional vaccines comprise killed, inactivated, or live-attenuated pathogens that have resulted in protective immune responses, the negative consequences of their administration have been well appreciated. Modern vaccines have evolved to contain purified antigenic subunits, epitopes, or antigen-encoding mRNAs, rendering them relatively safe. However, reduced humoral and cellular responses pose major challenges to these subunit vaccines. Protein nanoparticle (PNP)-based vaccines have garnered substantial interest in recent years for their ability to present a repetitive array of antigens for improving immunogenicity and enhancing protective responses. Discovery and characterisation of naturally occurring PNPs from various living organisms such as bacteria, archaea, viruses, insects, and eukaryotes, as well as computationally designed structures and approaches to link antigens to the PNPs, have paved the way for unprecedented advances in the field of vaccine technology. In this review, we focus on some of the widely used naturally occurring and optimally designed PNPs for their suitability as promising vaccine platforms for displaying native-like antigens from human viral pathogens for protective immune responses. Such platforms hold great promise in combating emerging and re-emerging infectious viral diseases and enhancing vaccine efficacy and safety.
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Affiliation(s)
- Kush K. Pandey
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (K.K.P.); (B.R.S.)
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Bikash R. Sahoo
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (K.K.P.); (B.R.S.)
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
| | - Asit K. Pattnaik
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68583, USA; (K.K.P.); (B.R.S.)
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
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2
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Iglesias Rando MR, Gorojovsky N, Zylberman V, Goldbaum FA, Craig PO. Improvement of Cellulomonas fimi endoglucanase CenA by multienzymatic display on a decameric structural scaffold. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12581-6. [PMID: 37212884 DOI: 10.1007/s00253-023-12581-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/27/2023] [Accepted: 05/06/2023] [Indexed: 05/23/2023]
Abstract
The development of multifunctional particles using polymeric scaffolds is an emerging technology for many nanobiotechnological applications. Here we present a system for the production of multifunctional complexes, based on the high affinity non-covalent interaction of cohesin and dockerin modules complementary fused to decameric Brucella abortus lumazine synthase (BLS) subunits, and selected target proteins, respectively. The cohesin-BLS scaffold was solubly expressed in high yield in Escherichia coli, and revealed a high thermostability. The production of multienzymatic particles using this system was evaluated using the catalytic domain of Cellulomonas fimi endoglucanase CenA recombinantly fused to a dockerin module. Coupling of the enzyme to the scaffold was highly efficient and occurred with the expected stoichiometry. The decavalent enzymatic complexes obtained showed higher cellulolytic activity and association to the substrate compared to equivalent amounts of the free enzyme. This phenomenon was dependent on the multiplicity and proximity of the enzymes coupled to the scaffold, and was attributed to an avidity effect in the polyvalent enzyme interaction with the substrate. Our results highlight the usefulness of the scaffold presented in this work for the development of multifunctional particles, and the improvement of lignocellulose degradation among other applications. KEY POINTS: • New system for multifunctional particle production using the BLS scaffold • Higher cellulolytic activity of polyvalent endoglucanase compared to the free enzyme • Amount of enzyme associated to cellulose is higher for the polyvalent endoglucanase.
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Affiliation(s)
- Matías R Iglesias Rando
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina
| | - Natalia Gorojovsky
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina
| | - Vanesa Zylberman
- Inmunova SA, Gral. San Martín, 25 de Mayo 1021 (CP 1650), Villa Lynch, Buenos Aires, Argentina
| | - Fernando A Goldbaum
- Inmunova SA, Gral. San Martín, 25 de Mayo 1021 (CP 1650), Villa Lynch, Buenos Aires, Argentina
- Fundación Instituto Leloir, IIBBA-CONICET, Av. Patricias Argentinas 435 (CP 1405), Buenos Aires, Argentina
- Centro de Rediseño e Ingeniería de Proteínas (CRIP), UNSAM Campus Miguelete, 25 de Mayo y Francia (CP 1650), Gral. San Martín, Buenos Aires, Argentina
| | - Patricio O Craig
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina.
- CONICET-Universidad de Buenos Aires, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Intendente Güiraldes 2160 (CP 1428), Buenos Aires, Argentina.
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Yang J, Zhang J, Yan P, Zhang Z, Gao W, Xu M, Xu X, Liu B, Chen Z. Asymmetric Assembly and Self-Adjuvanted Antigen Delivery Platform for Improved Antigen Uptake and Antitumor Effect. Bioconjug Chem 2023; 34:856-865. [PMID: 37083372 DOI: 10.1021/acs.bioconjchem.3c00060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The development of effective tumor vaccines is an important direction in the field of cancer prevention/immunotherapy. Efficient antigen delivery is essential for inducing effective antitumor responses for tumor vaccines. Lumazine synthase (BLS) from Brucella spp. is a decameric protein with delivery and adjuvant properties, but its application in tumor vaccines is limited. Here, we developed an antigen delivery platform by combining a BLS asymmetric assembly and the Plug-and-Display system of SpyCatcher/SpyTag. An asymmetric assembly system consisting of BLSke and BLSdr was developed to equally assemble two molecules. Then, the MHC-I-restricted ovalbumin peptide (OVA(257-264) SIINFEKL) was conjugated with BLSke, and a cell-penetrating peptide (CPP) KALA was conjugated with BLSdr using the SpyCatcher/SpyTag system. KALA modification enhanced internalization of OVA peptides by DCs as well as promoted the maturation of DCs and the cross-presentation of SIINFEKL. Moreover, the immunotherapy of a KALA-modified vaccine suppressed tumor growth and enhanced CD8+ T cell responses in E.G7-OVA tumor-bearing mice. In the prophylactic model, KALA-modified vaccination showed the most significant protective effect and significantly prolonged the survival period of tumor challenged mice. In conclusion, the asymmetric assembly platform equally assembles two proteins or peptides, avoiding their spatial or functional interference. This asymmetric assembly and Plug-and-Display technology provide a universal platform for rapid development of personalized tumor vaccines.
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Affiliation(s)
- Jianghua Yang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Jinsong Zhang
- NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Key Laboratory of Tropical Diseases Control, School of public health, Sun Yat-sen University, Guangzhou 510275, P. R. China
| | - Ping Yan
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Zhao Zhang
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Weiyu Gao
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Man Xu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Xinling Xu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Baoshan Liu
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
| | - Zeliang Chen
- Key Laboratory of Livestock Infectious Diseases in Northeast China, Ministry of Education, College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, Liaoning Province 110866, P. R. China
- NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Key Laboratory of Tropical Diseases Control, School of public health, Sun Yat-sen University, Guangzhou 510275, P. R. China
- Key Laboratory of Zoonose Prevention and Control at Universities of Inner Mongolia Autonomous Region, Innovative Institute of Zoonoses, Inner Mongolia Minzu University, Tongliao 028000, P. R. China
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Rahimnahal S, Yousefizadeh S, Mohammadi Y. Novel multi-epitope vaccine against bovine brucellosis: approach from immunoinformatics to expression. J Biomol Struct Dyn 2023; 41:15460-15484. [PMID: 36927475 DOI: 10.1080/07391102.2023.2188962] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/02/2023] [Indexed: 03/18/2023]
Abstract
Brucellosis is a zoonotic caused by the Brucella which is a well-known infectious disease agent in domestic animals and if transmitted, it can cause infection in humans. Because brucellosis is contagious, its control depends on the eradication of the animal disease in farms. There are two vaccines based on the killed and/or weakened bacteria against B. melitensis and B. abortus, but no recombinant vaccine is available for preventing the disease. The present study was designed to develop a multi-epitope vaccine against of B. melitensis and B. abortus using virB10, Omp31 and Omp16 antigens by the prediction of T lymphocytes, T cell cytotoxicity and IFN-γ epitopes. 50S L7/L12 Ribosomal protein from Mycobacterium tuberculosis was used as a bovine TLR4 and TLR9 agonist. GPGPG, AAY and KK linkers were used as a linker. Brucella construct was well-integrated in the pET-32a Shuttle vector with BamHI and HindIII restriction enzymes. The final construct contained 769 amino acids, that it was soluble protein of about ∼82 kDa after expression in the Escherichia coli SHuffle host. Modeled protein analysis based on the tertiary structure validation, molecular docking studies, molecular dynamics simulations results like RMSD, Gyration and RMSF as well as MM/PBSA analysis showed that this protein has a stable construct and is capable being in interaction with bovine TLR4 and TLR9. Analysis of the data obtained suggests that the proposed vaccine can induce the immune response by stimulating T- and B-cells, and may be used for prevention and remedial purposes, against B. melitensis and B. abortus.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Somayyeh Rahimnahal
- Department of Animal Science, Faculty of Agriculture, Ilam University, Ilam, Iran
| | - Shahnaz Yousefizadeh
- Department of Laboratory and Clinical Sciences, Faculty of Para-Veterinary, Ilam University, Ilam, Iran
| | - Yahya Mohammadi
- Department of Animal Science, Faculty of Agriculture, Ilam University, Ilam, Iran
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Soltan MA, Abdulsahib WK, Amer M, Refaat AM, Bagalagel AA, Diri RM, Albogami S, Fayad E, Eid RA, Sharaf SMA, Elhady SS, Darwish KM, Eldeen MA. Mining of Marburg Virus Proteome for Designing an Epitope-Based Vaccine. Front Immunol 2022; 13:907481. [PMID: 35911751 PMCID: PMC9334820 DOI: 10.3389/fimmu.2022.907481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/16/2022] [Indexed: 12/11/2022] Open
Abstract
Marburg virus (MARV) is one of the most harmful zoonotic viruses with deadly effects on both humans and nonhuman primates. Because of its severe outbreaks with a high rate of fatality, the world health organization put it as a risk group 4 pathogen and focused on the urgent need for the development of effective solutions against that virus. However, up to date, there is no effective vaccine against MARV in the market. In the current study, the complete proteome of MARV (seven proteins) was analyzed for the antigenicity score and the virulence or physiological role of each protein where we nominated envelope glycoprotein (Gp), Transcriptional activator (VP30), and membrane-associated protein (VP24) as the candidates for epitope prediction. Following that, a vaccine construct was designed based on CTL, HTL, and BCL epitopes of the selected protein candidates and to finalize the vaccine construct, several amino acid linkers, β-defensin adjuvant, and PADRE peptides were incorporated. The generated potential vaccine was assessed computationally for several properties such as antigenicity, allergenicity, stability, and other structural features where the outcomes of these assessments nominated this potential vaccine to be validated for its binding affinity with two molecular targets TLR-8 and TLR-4. The binding score and the stability of the vaccine-receptor complex, which was deeply studied through molecular docking-coupled dynamics simulation, supported the selection of our designed vaccine as a putative solution for MARV that should be validated through future wet-lab experiments. Here, we describe the computational approach for designing and analysis of this potential vaccine.
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Affiliation(s)
- Mohamed A. Soltan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Sinai University, Ismailia, Egypt
- *Correspondence: Mohamed A. Soltan, ; Muhammad Alaa Eldeen,
| | - Waleed K. Abdulsahib
- Department of pharmacology and Toxicology, College of Pharmacy, Al- Farahidi University, Baghdad, Iraq
| | - Mahmoud Amer
- Internal Medicine Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed M. Refaat
- Zoology Department, Faculty of Science, Minia University, El-Minia, Egypt
| | - Alaa A. Bagalagel
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Reem M. Diri
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sarah Albogami
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Eman Fayad
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Refaat A. Eid
- Department of Pathology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | | | - Sameh S. Elhady
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Khaled M. Darwish
- Department of Medicinal Chemistry, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Muhammad Alaa Eldeen
- Cell Biology, Histology and Genetics Division, Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
- *Correspondence: Mohamed A. Soltan, ; Muhammad Alaa Eldeen,
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Farias A, Soto A, Puttur F, Goldin CJ, Sosa S, Gil C, Goldbaum FA, Berguer PM. A TLR4 agonist improves immune checkpoint blockade treatment by increasing the ratio of effector to regulatory cells within the tumor microenvironment. Sci Rep 2021; 11:15406. [PMID: 34321536 PMCID: PMC8319313 DOI: 10.1038/s41598-021-94837-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 07/15/2021] [Indexed: 12/18/2022] Open
Abstract
Brucella lumazine synthase (BLS) is a homodecameric protein that activates dendritic cells via toll like receptor 4, inducing the secretion of pro-inflammatory cytokines and chemokines. We have previously shown that BLS has a therapeutic effect in B16 melanoma-bearing mice only when administered at early stages of tumor growth. In this work, we study the mechanisms underlying the therapeutic effect of BLS, by analyzing the tumor microenvironment. Administration of BLS at early stages of tumor growth induces high levels of serum IFN-γ, as well as an increment of hematopoietic immune cells within the tumor. Moreover, BLS-treatment increases the ratio of effector to regulatory cells. However, all treated mice eventually succumb to the tumors. Therefore, we combined BLS administration with anti-PD-1 treatment. Combined treatment increases the outcome of both monotherapies. In conclusion, we show that the absence of the therapeutic effect at late stages of tumor growth correlates with low levels of serum IFN-γ and lower infiltration of immune cells in the tumor, both of which are essential to delay tumor growth. Furthermore, the combined treatment of BLS and PD-1 blockade shows that BLS could be exploited as an essential immunomodulator in combination therapy with an immune checkpoint blockade to treat skin cancer.
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Affiliation(s)
- A Farias
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - A Soto
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - F Puttur
- Inflammation, Repair and Development, National Heart and Lung Institute, Imperial College London, London, UK
| | - C J Goldin
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - S Sosa
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - C Gil
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - F A Goldbaum
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - P M Berguer
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
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Sha T, Li Z, Zhang C, Zhao X, Chen Z, Zhang F, Ding J. Bioinformatics analysis of candidate proteins Omp2b, P39 and BLS for Brucella multivalent epitope vaccines. Microb Pathog 2020; 147:104318. [PMID: 32531499 DOI: 10.1016/j.micpath.2020.104318] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022]
Abstract
This study focuses on analyzing the physicochemical properties, structural characteristics and dominant epitopes of Brucella outer membrane protein 2b (Omp2b), periplasmic binding protein (P39) and Brucella lumazine synthase (BLS) proteins by bioinformatics methods, and to provide a theoretical basis for constructing multi-epitope vaccines. The amino acid sequences of three kinds of proteins were obtained from the UniProt database. The highest frequency alleles in northern China were obtained from the AlleleFrequencies database. Analysis of the physicochemical properties of the proteins by ProtParam online software. Analysis of the secondary structure of the proteins were predicted by SOMPA online software. Using SWISS-MODEL online software constructed and analyzed the tertiary structure of the proteins. Using ABCpred, BepiPred, BCPred and SVMTrip online software analyzed linear B cell epitopes of proteins, The T cell dominant epitope of the protein was analyzed using SYFPEITHI, RANKPEP and IEDB online software. Omp2b was identified three linear B cell dominant epitopes, five CD8+ T cell dominant epitopes, and three CD4+ T cell dominant epitopes. P39 was identified three linear B cell dominant epitopes, two CD8+ T cell dominant epitopes, and two CD4+ T cell dominant epitopes. BLS was identified one linear B cell dominant epitope, one CD8+ T cell dominant epitope, and two CD4+ T cell dominant epitopes. The results indicated that epitope prediction of three Brucella vaccine candidate proteins can provide a theoretical basis for the construction of an ideal multivalent epitope vaccine against Brucella.
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Affiliation(s)
- Tong Sha
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China; Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Zhiwei Li
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China; Clinical Laboratory Center, Xinjiang Uygur Autonomous Region People's Hospital, Urumqi, China
| | - Chuntao Zhang
- Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Xiao Zhao
- Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Zhiqiang Chen
- Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Fengbo Zhang
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China; Department of Clinical Laboratory, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.
| | - Jianbing Ding
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China; Basic Medical College, Xinjiang Medical University, Urumqi, China.
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Li P, Ren K, Liang YY, Liu JK, Liang ZW, Zhang YF. Aloin promotes cell apoptosis by targeting HMGB1-TLR4-ERK axis in human melanoma cells. EXCLI JOURNAL 2020; 19:641-651. [PMID: 32536835 PMCID: PMC7290104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/11/2020] [Indexed: 10/28/2022]
Abstract
Aloin (ALO) is the major anthraquinone glycoside purified from the Aloe species. It is well known for its anti-tumor effects. However, the protective effects of ALO in melanoma cancer and underlying molecular mechanism remain unclear. High-mobility group protein B1 (HMGB1) is an intracellular protein, which has closely association with cell survival, proliferation and metastasis in various cancers. In this study, we explored the effect of ALO on cell survival and apoptosis by targeting HMGB1 signal pathway. We confirmed that ALO exerts a strong effect on promoting cell apoptosis of melanoma cells in vitro. Furthermore, HMGB1 release was significantly inhibited in melanoma cancer cells treated with ALO. Knockdown of HMGB1 could enhance melanoma cell death that is induced by ALO treatment. Moreover, HMGB1 facilitated ALO mediated melanoma cell apoptosis by binding to its receptor, Toll-like receptor 4 and activating extracellular regulated protein kinases (ERK) signal pathway. Altogether, our study demonstrated that ALO plays an important role in promoting apoptosis of melanoma cells by inhibiting HMGB1 release and activation of downstream ERK signal pathway.
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Affiliation(s)
- Pan Li
- Medical Research Institute, Northwestern Polytechnical University, Xi′an, China,Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Kai Ren
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yin yin Liang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ji kai Liu
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhuo wen Liang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China,*To whom correspondence should be addressed: Zhuo wen Liang, Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an 710032, China, E-mail:
| | - Yong feng Zhang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Fei Z, Li D, Li K, Zhou M, Li Y, Li Y, Sun Z. Detraining after tumor-bearing accelerates tumor growth while continuous training decreases tumor growth in mice. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2020. [DOI: 10.1016/j.jtcms.2020.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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10
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Sosa S, Rossi AH, Szalai AM, Klinke S, Rinaldi J, Farias A, Berguer PM, Nadra AD, Stefani FD, Goldbaum FA, Bonomi HR. Asymmetric bifunctional protein nanoparticles through redesign of self-assembly. NANOSCALE ADVANCES 2019; 1:1833-1846. [PMID: 36134238 PMCID: PMC9419478 DOI: 10.1039/c8na00375k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/14/2019] [Indexed: 05/05/2023]
Abstract
Engineering oligomeric protein self-assembly is an attractive approach to fabricate nanostructures with well-defined geometries, stoichiometry and functions. The homodecamer Brucella Lumazine Synthase (BLS) is a highly stable and immunogenic protein nanoparticle (PNP). Here, we engineered the BLS protein scaffold to display two functions in spatially opposite regions of its structure yielding a Janus-like nanoparticle. An in silico analysis of the BLS head-to-head dimer of homopentamers shows major inter-pentameric interactions located in the equatorial interface. Based on this analysis, two BLS protomer variants were designed to interrupt pentamer self-dimerization and promote heteropentameric dimers. This strategy enabled us to generate a decameric particle with two distinct sides formed by two independent pentamers. The versatility of this new self-assembly nanofabrication strategy is illustrated with two example applications. First, a bifunctional BLS bearing Alexa Fluor 488 fluorophores on one side and sialic acid binding domains on the other side was used for labelling murine and human cells and analyzed by flow cytometry and confocal microscopy. Second, multichromophoric FRET nanoparticles were fabricated and characterized at the single molecule level, showing discrete energy transfer events. The engineered BLS variants constitute a general platform for displaying two functions in a controlled manner within the same PNP with potential applications in various areas such as biomedicine, biotechnology and nanotechnology.
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Affiliation(s)
- Santiago Sosa
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
- Centro de Investigaciones en Bionanociencias (CIBION)-CONICET Godoy Cruz 2390 (C1425FQD), Ciudad Autónoma de Buenos Aires Argentina
| | - Andrés H Rossi
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Alan M Szalai
- Centro de Investigaciones en Bionanociencias (CIBION)-CONICET Godoy Cruz 2390 (C1425FQD), Ciudad Autónoma de Buenos Aires Argentina
| | - Sebastián Klinke
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
- Plataforma Argentina de Biología Estructural y Metabolómica PLABEM Av. Patricias Argentinas 435 (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Jimena Rinaldi
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Ana Farias
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Paula M Berguer
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Alejandro D Nadra
- Departamento de Fisiología, Biología Molecular y Celular, Departamento de Química Biológica and IQUIBICEN-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 2 (C1428EHA), Ciudad Autónoma de Buenos Aires Argentina
| | - Fernando D Stefani
- Centro de Investigaciones en Bionanociencias (CIBION)-CONICET Godoy Cruz 2390 (C1425FQD), Ciudad Autónoma de Buenos Aires Argentina
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 1 Ciudad Universitaria (C1428EHA) Ciudad Autónoma de Buenos Aires Argentina
| | - Fernando A Goldbaum
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
- Plataforma Argentina de Biología Estructural y Metabolómica PLABEM Av. Patricias Argentinas 435 (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
| | - Hernán R Bonomi
- Fundación Instituto Leloir, IIBBA-CONICET Av. Patricias Argentinas 435, (C1405BWE) Ciudad Autónoma de Buenos Aires Argentina
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11
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Dickinson SE, Wondrak GT. TLR4 in skin cancer: From molecular mechanisms to clinical interventions. Mol Carcinog 2019; 58:1086-1093. [PMID: 31020719 DOI: 10.1002/mc.23016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 03/22/2019] [Accepted: 03/29/2019] [Indexed: 12/15/2022]
Abstract
The health and economic burden imposed by skin cancer is substantial, creating an urgent need for the development of improved molecular strategies for its prevention and treatment. Cutaneous exposure to solar ultraviolet (UV) radiation is a causative factor in skin carcinogenesis, and TLR4-dependent inflammatory dysregulation is an emerging key mechanism underlying detrimental effects of acute and chronic UV exposure. Direct and indirect TLR4 activation, upstream of inflammatory signaling, is elicited by a variety of stimuli, including pathogen-associated molecular patterns (such as lipopolysaccharide) and damage-associated molecular patterns (such as HMGB1) that are formed upon exposure to environmental stressors, such as solar UV. TLR4 involvement has now been implicated in major types of skin malignancies, including nonmelanoma skin cancer, melanoma and Merkel cell carcinoma. Targeted molecular interventions that positively or negatively modulate TLR4 signaling have shown promise in translational, preclinical, and clinical investigations that may benefit skin cancer patients in the near future.
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Affiliation(s)
- Sally E Dickinson
- Department of Pharmacology, College of Medicine and The University of Arizona Cancer Center, University of Arizona, Tucson, Arizona
| | - Georg T Wondrak
- Department of Pharmacology and Toxicology, College of Pharmacy and The University of Arizona Cancer Center, University of Arizona, Tucson, Arizona
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12
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Alzogaray V, Urrutia M, Berguer P, Rossi A, Zylberman V, Pardo R, Bonomi HR, Goldbaum FA. Characterization of folding-sensitive nanobodies as tools to study the expression and quality of protein particle immunogens. J Biotechnol 2019; 293:17-23. [PMID: 30690101 DOI: 10.1016/j.jbiotec.2019.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 12/04/2018] [Accepted: 01/07/2019] [Indexed: 01/05/2023]
Abstract
Vaccination is as one of the most beneficial biopharmaceutical interventions against pathogens due to its ability to induce adaptive immunity through targeted activation of the immune system. Each vaccine needs a tailor-made set of tests in order to monitor its quality throughout the development and manufacturing. The analysis of the conformational state of protein nanoparticles is one of the key steps in vaccine quality control. The enzyme lumazine synthase from Brucella spp. (BLS) acts as a potent oral and systemic immunogen. BLS has been used as a carrier of foreign peptides, protein domains and whole proteins, serving as a versatile platform for vaccine engineering purposes. Here, we show the generation and characterization of four families of nanobodies (Nbs) which only recognize BLS in its native conformational state and that bind to its active site. The present results support the use of conformation-sensitive Nbs as molecular probes during the development and production of vaccines based on the BLS platform. Finally, we propose Nbs as useful molecular tools targeting other protein scaffolds with potential applications in nano-and biotechnology.
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Affiliation(s)
- Vanina Alzogaray
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina
| | - Mariela Urrutia
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina
| | - Paula Berguer
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina
| | - Andrés Rossi
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina
| | - Vanesa Zylberman
- INMUNOVA, 25 de Mayo 1021 (B1650HMI), San Martin, Buenos Aires, Argentina
| | - Romina Pardo
- INMUNOVA, 25 de Mayo 1021 (B1650HMI), San Martin, Buenos Aires, Argentina
| | - Hernán R Bonomi
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina
| | - Fernando A Goldbaum
- Fundación Instituto Leloir, IIBBA-CONICET, Avenida Patricias Argentinas 435 (C1405BWE), Ciudad de Buenos Aires, Argentina.
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13
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Wei Y, Kumar P, Wahome N, Mantis NJ, Middaugh CR. Biomedical Applications of Lumazine Synthase. J Pharm Sci 2018; 107:2283-2296. [DOI: 10.1016/j.xphs.2018.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/02/2018] [Accepted: 05/02/2018] [Indexed: 10/16/2022]
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14
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Martorelli L, Garimano N, Fiorentino GA, Vilte DA, Garbaccio SG, Barth SA, Menge C, Ibarra C, Palermo MS, Cataldi A. Efficacy of a recombinant Intimin, EspB and Shiga toxin 2B vaccine in calves experimentally challenged with Escherichia coli O157:H7. Vaccine 2018; 36:3949-3959. [PMID: 29807709 DOI: 10.1016/j.vaccine.2018.05.059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 05/09/2018] [Accepted: 05/11/2018] [Indexed: 11/30/2022]
Abstract
Escherichia coli O157:H7 is a zoonotic pathogen of global importance and the serotype of Shiga toxin-producing E.coli (STEC) most frequently associated with Hemolytic Uremic Syndrome (HUS) in humans. The main STEC reservoir is cattle. Vaccination of calves with the carboxy-terminal fraction of Intimin γ (IntC280) and EspB can reduce E.coli O157:H7 fecal shedding after experimental challenge. Shiga toxin (Stx) exerts local immunosuppressive effects in the bovine intestine and Stx2B fused to Brucella lumazine synthase (BLS-Stx2B) induces Stx2-neutralizing antibodies. To determine if an immune response against Stx could improve a vaccine's effect on fecal shedding, groups of calves were immunized with EspB + IntC280, with EspB + IntC280 + BLS-Stx2B, or kept as controls. At 24 days post vaccination calves were challenged with E.coli O157:H7. Shedding of E.coli O157:H7 was assessed in recto-anal mucosal swabs by direct plating and enrichment followed by immunomagnetic separation and multiplex PCR. Calves were euthanized 15 days after the challenge and intestinal segments were obtained to assess mucosal antibodies. Vaccination induced a significant increase of IntC280 and EspB specific antibodies in serum and intestinal mucosa in both vaccinated groups. Antibodies against Stx2B were detected in serum and intestinal mucosa of animals vaccinated with 3 antigens. Sera and intestinal homogenates were able to neutralize Stx2 verocytotoxicity compared to the control and the 2-antigens vaccinated group. Both vaccines reduced E.coli O157:H7 shedding compared to the control group. The addition of Stx2B to the vaccine formulation did not result in a superior level of protection compared to the one conferred by IntC280 and EspB alone. It remains to be determined if the inclusion of Stx2B in the vaccine alters E.coli O157:H7 shedding patterns in the long term and after recurrent low dose exposure as occurring in cattle herds.
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Affiliation(s)
- Luisina Martorelli
- Instituto de Patobiología, Centro de Investigación en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Nicolás Garimano
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gabriela A Fiorentino
- Laboratorio de Patogénesis e Inmunología de Procesos Infecciosos, Instituto de Medicina Experimental, (IMEX), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Daniel A Vilte
- Instituto de Patobiología, Centro de Investigación en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Sergio G Garbaccio
- Instituto de Patobiología, Centro de Investigación en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria (INTA), Hurlingham, Argentina
| | - Stefanie A Barth
- Friedrich-Loeffler-Institut/Federal Research Institute for Animal Health, Institute of Molecular Pathogenesis, Jena, Germany
| | - Christian Menge
- Friedrich-Loeffler-Institut/Federal Research Institute for Animal Health, Institute of Molecular Pathogenesis, Jena, Germany
| | - Cristina Ibarra
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO Houssay-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Marina S Palermo
- Laboratorio de Patogénesis e Inmunología de Procesos Infecciosos, Instituto de Medicina Experimental, (IMEX), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Angel Cataldi
- Instituto de Biotecnología, Centro de Investigación en Ciencias Veterinarias y Agronómicas, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Argentina.
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15
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Yousefi S, Abbassi-Daloii T, Sekhavati MH, Tahmoorespur M. Evaluation of immune responses induced by polymeric OMP25-BLS Brucella antigen. Microb Pathog 2017; 115:50-56. [PMID: 29253594 DOI: 10.1016/j.micpath.2017.12.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 12/14/2017] [Accepted: 12/14/2017] [Indexed: 01/18/2023]
Abstract
Brucellosis is one the serious infectious diseases caused deleterious health and economic losses. Vaccination with subunit vaccines is the efficient alternative way than live attenuated vaccines against infectious diseases. Herein a new chimeric OMP25-BLS antigen emulsified in Chitosan Nanoparticles was designed and its immune responses were compared with control groups. Also, the role of heat shock protein 60 kDa in combination with OMP25-BLS antigen was assessed. Structural and antigenic features of chimeric antigen were predicted using bioinformatics tools. Moreover, the humoral and cellular immune responses were measured by ELISA in seven different groups. Observations showed rOMP25-BLS structure was highly stable and antigenic. Cytokines analysis showed rOMP25 and rOMP25-BLS + rHSP60 induced higher titer of INF-γ than rHSP60 and rOMP25-BLS. There was no statistically significant difference between positive control group and rOMP25-BLS + rHSP60 in inducing TNF-α (p < .05). Additionally, the highest titer of IL-4 was dedicated to rOMP25 among other immunized treatments, while there were no significant differences between positive control group and other immunized groups with recombinant proteins (p < .05). In addition, rOMP25-BLS and rHSP60 induced higher titer of total antibody compared to other groups. Also, rHSP60 could improve IgG2a to IgG1 ratio when it used in combination with chimeric antigen. Moreover, the lymphocyte proliferation index was higher in chimeric rOMP25-BLS + HSP60 antigen. In conclusion, while rOMP25-BLS chimeric antigen unable to induce efficient cellular response than individual injection of rOMP25, its injection in combination with rHSP60 could improve cellular immunity.
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Affiliation(s)
- Soheil Yousefi
- Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
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16
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Saadi M, Karkhah A, Nouri HR. Development of a multi-epitope peptide vaccine inducing robust T cell responses against brucellosis using immunoinformatics based approaches. INFECTION GENETICS AND EVOLUTION 2017; 51:227-234. [PMID: 28411163 DOI: 10.1016/j.meegid.2017.04.009] [Citation(s) in RCA: 134] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/08/2017] [Accepted: 04/10/2017] [Indexed: 01/18/2023]
Abstract
Current investigations have demonstrated that a multi-epitope peptide vaccine targeting multiple antigens could be considered as an ideal approach for prevention and treatment of brucellosis. According to the latest findings, the most effective immunogenic antigens of brucella to induce immune responses are included Omp31, BP26, BLS, DnaK and L7-L12. Therefore, in the present study, an in silico approach was used to design a novel multi-epitope vaccine to elicit a desirable immune response against brucellosis. First, five novel T-cell epitopes were selected from Omp31, BP26, BLS, DnaK and L7-L12 proteins using different servers. In addition, helper epitopes selected from Tetanus toxin fragment C (TTFrC) were applied to induce CD4+ helper T lymphocytes (HTLs) responses. Selected epitopes were fused together by GPGPG linkers to facilitate the immune processing and epitope presentation. Moreover, cholera toxin B (CTB) was linked to N terminal of vaccine construct as an adjuvant by using EAAAK linker. A multi-epitope vaccine was designed based on predicted epitopes which was 377 amino acid residues in length. Then, the physico-chemical properties, secondary and tertiary structures, stability, intrinsic protein disorder, solubility and allergenicity of this multi-epitope vaccine were assessed using immunoinformatics tools and servers. Based on obtained results, a soluble, and non-allergic protein with 40.59kDa molecular weight was constructed. Expasy ProtParam classified this chimeric protein as a stable protein and also 89.8% residues of constructed vaccine were located in favored regions of the Ramachandran plot. Furthermore, this multi-epitope peptide vaccine was able to strongly induce T cell and B-cell mediated immune responses. In conclusion, immunoinformatics analysis indicated that this multi-epitope peptide vaccine can be effectively expressed and potentially be used for prophylactic or therapeutic usages against brucellosis.
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Affiliation(s)
- Mahdiye Saadi
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran; Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | - Ahmad Karkhah
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran; Student Research Committee, Babol University of Medical Sciences, Babol, Iran
| | - Hamid Reza Nouri
- Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
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17
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Hiriart Y, Rossi AH, Biedma ME, Errea AJ, Moreno G, Cayet D, Rinaldi J, Blancá B, Sirard JC, Goldbaum F, Berguer P, Rumbo M. Characterization of structural and immunological properties of a fusion protein between flagellin from Salmonella and lumazine synthase from Brucella. Protein Sci 2017; 26:1049-1059. [PMID: 28257593 DOI: 10.1002/pro.3151] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/09/2016] [Accepted: 02/23/2017] [Indexed: 01/09/2023]
Abstract
Aiming to combine the flexibility of Brucella lumazine synthase (BLS) to adapt different protein domains in a decameric structure and the capacity of BLS and flagellin to enhance the immunogenicity of peptides that are linked to their structure, we generated a chimeric protein (BLS-FliC131) by fusing flagellin from Salmonella in the N-termini of BLS. The obtained protein was recognized by anti-flagellin and anti-BLS antibodies, keeping the oligomerization capacity of BLS, without affecting the folding of the monomeric protein components determined by circular dichroism. Furthermore, the thermal stability of each fusion partner is conserved, indicating that the interactions that participate in its folding are not affected by the genetic fusion. Besides, either in vitro or in vivo using TLR5-deficient animals we could determine that BLS-FliC131 retains the capacity of triggering TLR5. The humoral response against BLS elicited by BLS-FliC131 was stronger than the one elicited by equimolar amounts of BLS + FliC. Since BLS scaffold allows the generation of hetero-decameric structures, we expect that flagellin oligomerization on this protein scaffold will generate a new vaccine platform with enhanced capacity to activate immune responses.
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Affiliation(s)
- Y Hiriart
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
| | - A H Rossi
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M E Biedma
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
| | - A J Errea
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
| | - G Moreno
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
| | - D Cayet
- Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Lille, France. Institut National de la Santé et de la Recherche Médicale, U1019, Lille, France. Centre National de la Recherche Scientifique, UMR 8204, Lille, France Université de Lille, Lille, France
| | - J Rinaldi
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - B Blancá
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
| | - J C Sirard
- Centre d'Infection et d'Immunité de Lille, Institut Pasteur de Lille, Lille, France. Institut National de la Santé et de la Recherche Médicale, U1019, Lille, France. Centre National de la Recherche Scientifique, UMR 8204, Lille, France Université de Lille, Lille, France
| | - F Goldbaum
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - P Berguer
- Fundación Instituto Leloir, IIBBA, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M Rumbo
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP-CONICET-UNLP), La Plata, Argentina
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18
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Ahmed W, Zheng K, Liu ZF. Establishment of Chronic Infection: Brucella's Stealth Strategy. Front Cell Infect Microbiol 2016; 6:30. [PMID: 27014640 PMCID: PMC4791395 DOI: 10.3389/fcimb.2016.00030] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/29/2016] [Indexed: 01/18/2023] Open
Abstract
Brucella is a facultative intracellular pathogen that causes zoonotic infection known as brucellosis which results in abortion and infertility in natural host. Humans, especially in low income countries, can acquire infection by direct contact with infected animal or by consumption of animal products and show high morbidity, severe economic losses and public health problems. However for survival, host cells develop complex immune mechanisms to defeat and battle against attacking pathogens and maintain a balance between host resistance and Brucella virulence. On the other hand as a successful intracellular pathogen, Brucella has evolved multiple strategies to evade immune response mechanisms to establish persistent infection and replication within host. In this review, we mainly summarize the "Stealth" strategies employed by Brucella to modulate innate and the adaptive immune systems, autophagy, apoptosis and possible role of small noncoding RNA in the establishment of chronic infection. The purpose of this review is to give an overview for recent understanding how this pathogen evades immune response mechanisms of host, which will facilitate to understanding the pathogenesis of brucellosis and the development of novel, more effective therapeutic approaches to treat brucellosis.
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Affiliation(s)
- Waqas Ahmed
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University Wuhan, China
| | - Ke Zheng
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University Wuhan, China
| | - Zheng-Fei Liu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University Wuhan, China
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19
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Costantino VV, Lobos-Gonzalez L, Ibañez J, Fernandez D, Cuello-Carrión FD, Valenzuela MA, Barbieri MA, Semino SN, Jahn GA, Quest AFG, Lopez LA. Dehydroleucodine inhibits tumor growth in a preclinical melanoma model by inducing cell cycle arrest, senescence and apoptosis. Cancer Lett 2015; 372:10-23. [PMID: 26718258 DOI: 10.1016/j.canlet.2015.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/03/2015] [Accepted: 12/04/2015] [Indexed: 12/11/2022]
Abstract
Malignant melanoma represents the fastest growing public health risk of all cancer types worldwide. Several strategies and anti-cancer drugs have been used in an effort to improve treatments, but the development of resistance to anti-neoplastic drugs remains the major cause of chemotherapy failure in melanomas. Previously, we showed that the sesquiterpene lactone, dehydroleucodine (DhL), promotes the accumulation of DNA damage markers, such as H2AX and 53BP1, in human tumor cells. Also DhL was shown to trigger either cell senescence or apoptosis in a concentration-dependent manner in HeLa and MCF7 cells. Here, we evaluated the effects of DhL on B16F0 mouse melanoma cells in vitro and in a pre-clinical melanoma model. DhL inhibited the proliferation of B16F0 cells by inducing senescence or apoptosis in a concentration-dependent manner. Also, DhL reduced the expression of the cell cycle proteins cyclin D1 and B1 and the inhibitor of apoptosis protein, survivin. In melanomas generated by subcutaneous injection of B16F0 cells into C57/BL6 mice, the treatment with 20 mg DhL /Kg/day in preventive, simultaneous and therapeutic protocols reduced tumor volumes by 70%, 60% and 50%, respectively. DhL treatments reduced the number of proliferating, while increasing the number of senescent and apoptotic tumor cells. To estimate the long-term effects of DhL, a mathematical model was applied to fit experimental data. Extrapolation beyond experimental time points revealed that DhL administration following preventive and therapeutic protocols is predicted to be more effective than simultaneous treatments with DhL in restricting tumor growth.
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Affiliation(s)
- Valeria V Costantino
- Laboratory of Cell Cycle and Cytoskeleton, Instituto de Histología y Embriología Dr. M. H. Burgos (IHEM-CONICET, Mendoza, Argentina
| | - Lorena Lobos-Gonzalez
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), School of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Jorge Ibañez
- Laboratory of Cell Cycle and Cytoskeleton, Instituto de Histología y Embriología Dr. M. H. Burgos (IHEM-CONICET, Mendoza, Argentina
| | - Dario Fernandez
- Laboratory of Cell Cycle and Cytoskeleton, Instituto de Histología y Embriología Dr. M. H. Burgos (IHEM-CONICET, Mendoza, Argentina
| | - F Darío Cuello-Carrión
- Instituto de Medicina y Biología Experimental de Cuyo IMBECU-CONICET, Mendoza, Argentina
| | - Manuel A Valenzuela
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), School of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Manuel A Barbieri
- Department of Biological Sciences, Florida International University, Miami, FL 33199, USA
| | - Silvana N Semino
- Laboratory of Cell Cycle and Cytoskeleton, Instituto de Histología y Embriología Dr. M. H. Burgos (IHEM-CONICET, Mendoza, Argentina
| | - Graciela A Jahn
- Instituto de Medicina y Biología Experimental de Cuyo IMBECU-CONICET, Mendoza, Argentina
| | - Andrew F G Quest
- Cellular Communication Laboratory, Center for Molecular Studies of the Cell (CEMC), Advanced Center for Chronic Diseases (ACCDiS), Program of Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), School of Medicine, Universidad de Chile, Santiago 8380453, Chile.
| | - Luis A Lopez
- Laboratory of Cell Cycle and Cytoskeleton, Instituto de Histología y Embriología Dr. M. H. Burgos (IHEM-CONICET, Mendoza, Argentina.
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