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Davodabadi F, Sarhadi M, Arabpour J, Sargazi S, Rahdar A, Díez-Pascual AM. Breast cancer vaccines: New insights into immunomodulatory and nano-therapeutic approaches. J Control Release 2022; 349:844-875. [PMID: 35908621 DOI: 10.1016/j.jconrel.2022.07.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/23/2022] [Accepted: 07/25/2022] [Indexed: 10/16/2022]
Abstract
Breast cancer (BC) is known to be a highly heterogeneous disease that is clinically subdivided into four primary molecular subtypes, each having distinct morphology and clinical implications. These subtypes are principally defined by hormone receptors and other proteins involved (or not involved) in BC development. BC therapeutic vaccines [including peptide-based vaccines, protein-based vaccines, nucleic acid-based vaccines (DNA/RNA vaccines), bacterial/viral-based vaccines, and different immune cell-based vaccines] have emerged as an appealing class of cancer immunotherapeutics when used alone or combined with other immunotherapies. Employing the immune system to eliminate BC cells is a novel therapeutic modality. The benefit of active immunotherapies is that they develop protection against neoplastic tissue and readjust the immune system to an anti-tumor monitoring state. Such immunovaccines have not yet shown effectiveness for BC treatment in clinical trials. In recent years, nanomedicines have opened new windows to increase the effectiveness of vaccinations to treat BC. In this context, some nanoplatforms have been designed to efficiently deliver molecular, cellular, or subcellular vaccines to BC cells, increasing the efficacy and persistence of anti-tumor immunity while minimizing undesirable side effects. Immunostimulatory nano-adjuvants, liposomal-based vaccines, polymeric vaccines, virus-like particles, lipid/calcium/phosphate nanoparticles, chitosan-derived nanostructures, porous silicon microparticles, and selenium nanoparticles are among the newly designed nanostructures that have been used to facilitate antigen internalization and presentation by antigen-presenting cells, increase antigen stability, enhance vaccine antigenicity and remedial effectivity, promote antigen escape from the endosome, improve cytotoxic T lymphocyte responses, and produce humoral immune responses in BC cells. Here, we summarized the existing subtypes of BC and shed light on immunomodulatory and nano-therapeutic strategies for BC vaccination. Finally, we reviewed ongoing clinical trials on BC vaccination and highlighted near-term opportunities for moving forward.
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Affiliation(s)
- Fatemeh Davodabadi
- Department of Biology, Faculty of Basic Science, Payame Noor University, Tehran, Iran
| | - Mohammad Sarhadi
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 9816743463, Iran
| | - Javad Arabpour
- Department of Microbiology, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Young Researchers and Elite Club, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Saman Sargazi
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 9816743463, Iran.
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol 98613-35856, Iran.
| | - Ana M Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona, Km. 33.6, 28805 Alcalá de Henares, Madrid, Spain.
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2
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Lupi GA, Santiago Valtierra FX, Cabrera G, Spinelli R, Siano ÁS, González V, Osuna A, Oresti GM, Marcipar I. Development of low-cost cage-like particles to formulate veterinary vaccines. Vet Immunol Immunopathol 2022; 251:110460. [PMID: 35901545 DOI: 10.1016/j.vetimm.2022.110460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 10/17/2022]
Abstract
Low-cost adjuvants are urgently needed for the development of veterinary vaccines able to trigger strong immune responses. In this work, we describe a method to obtain a low-cost cage-like particles (ISCOMATRIX-like) adjuvant useful to formulate veterinary vaccines candidates. The main components to form the particles are lipids and saponins, which were obtained from egg yolk by ethanolic extraction and by dialyzing a non-refined saponins extract, respectively. Lipids were fully characterized by thin layer chromatography (TLC) and gas-chromatography (GC) and enzymatic methods, and saponins were characterized by TLC, HPLC and MALDI-TOF. Cage-like particles were prepared with these components or with commercial inputs. Both particles and the traditional Alum used in veterinary vaccines were compared by immunizing mice with Ovalbumin (OVA) formulated with these adjuvants and assessing IgG1, IgG2a anti OVA antibodies and specific Delayed-type Hypersensitivity (DTH). In the yolk extract, a mixture of phospholipids, cholesterol and minor components of the extract (e.g. lyso-phospholipids) with suitable proportions to generate cage-like particles was obtained. Also, semi-purified saponins with similar features to those of the QuilA® were obtained. Cage-like particles prepared with these components have 40-50 nm and triggers similar levels of Anti-OVA IgG1 and DTH than with commercial inputs but higher specific-IgG2a. Both adjuvants largely increased the levels of IgG1, IgG2a and DTH in relation to the formulation with Alum. The methods described to extract lipids from egg yolk and saponins from non-refined extract allowed us to obtain an inexpensive and highly effective adjuvant.
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Affiliation(s)
- Giuliana A Lupi
- Laboratorio de Tecnología Inmunológica (Facultad de Bioquímica y Cs Biológicas Universidad Nacional del Litoral) - Santa Fe - Argentina - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bs.As., Argentina
| | - Florencia X Santiago Valtierra
- Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina; Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Gabriel Cabrera
- Laboratorio de Tecnología Inmunológica (Facultad de Bioquímica y Cs Biológicas Universidad Nacional del Litoral) - Santa Fe - Argentina - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bs.As., Argentina
| | - Roque Spinelli
- Laboratorio de Péptidos Bioactivos - Departamento de Química Orgánica (Facultad de Bioquímica y Cs Biológicas Universidad Nacional del Litoral) - Santa Fe - Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bs.As., Argentina
| | - Álvaro S Siano
- Laboratorio de Péptidos Bioactivos - Departamento de Química Orgánica (Facultad de Bioquímica y Cs Biológicas Universidad Nacional del Litoral) - Santa Fe - Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bs.As., Argentina
| | - Verónica González
- Grupo de Polímeros y Reactores de Polimerización, INTEC (Universidad Nacional del Litoral, CONICET), Santa Fe, Argentina
| | - Antonio Osuna
- Grupo de Investigación en Bioquímica Molecular y Parasitología, Departamento de Parasitología, Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, Granada, Spain
| | - Gerardo M Oresti
- Departamento de Biología, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina; Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bahía Blanca, Argentina, Bioquímica y Farmacia (DBByF), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina
| | - Iván Marcipar
- Laboratorio de Tecnología Inmunológica (Facultad de Bioquímica y Cs Biológicas Universidad Nacional del Litoral) - Santa Fe - Argentina - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Bs.As., Argentina.
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3
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Liao Y, Li Z, Zhou Q, Sheng M, Qu Q, Shi Y, Yang J, Lv L, Dai X, Shi X. Saponin surfactants used in drug delivery systems: A new application for natural medicine components. Int J Pharm 2021; 603:120709. [PMID: 33992714 DOI: 10.1016/j.ijpharm.2021.120709] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/08/2021] [Accepted: 05/11/2021] [Indexed: 12/16/2022]
Abstract
Saponins are a group of compounds widely distributed in the plant kingdom. Due to their amphiphilic characteristic structure, saponins have high surface activity and self-assembly property and can be used as natural biosurfactants. Therefore, saponin has become a potential drug delivery system (DDS) carrier and has attracted the attention of many researchers. Increasing studies have found that when drugs combining with saponins, their solubility or bioavailability are improved. This phenomenon may be due to a synergistic mechanism and provides a potentially novel concept for DDS: saponins may be also used for carrier materials. This review emphasized the molecular characteristics and mechanism of saponins as carriers and the research on the morphology of saponin carriers. Besides, the article also introduced the role and application of saponins in DDS. Although there are still some limitations with the application of saponins such as cost, applicability, and hemolysis, the development of technology and in-depth molecular mechanism research will provide saponins with greater application prospects as DDS carriers.
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Affiliation(s)
- Yuyao Liao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Zhixun Li
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Qing Zhou
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Mengke Sheng
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Qingsong Qu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Yanshuang Shi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jiaqi Yang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Lijing Lv
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Xingxing Dai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China; Key Laboratory for Production Process Control and Quality Evaluation of Traditional Chinese Medicine, Beijing Municipal Science & Technology Commission, Beijing 102488, China.
| | - Xinyuan Shi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China; Key Laboratory for Production Process Control and Quality Evaluation of Traditional Chinese Medicine, Beijing Municipal Science & Technology Commission, Beijing 102488, China.
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4
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Bartlett S, Skwarczynski M, Toth I. Lipids as Activators of Innate Immunity in Peptide Vaccine Delivery. Curr Med Chem 2020; 27:2887-2901. [PMID: 30362416 DOI: 10.2174/0929867325666181026100849] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 05/16/2018] [Accepted: 09/06/2018] [Indexed: 12/14/2022]
Abstract
BACKGROUND Innate immune system plays an important role in pathogen detection and the recognition of vaccines, mainly through pattern recognition receptors (PRRs) that identify pathogen components (danger signals). One of the typically recognised bacterial components are lipids in conjugation with peptides, proteins and saccharides. Lipidic compounds are readily recognised by the immune system, and thus are ideal candidates for peptide- based vaccine delivery. Thus, bacterial or synthetic lipids mixed with, or conjugated to, antigens have shown adjuvant properties. These systems have many advantages over traditional adjuvants, including low toxicity and good efficacy for stimulating mucosal and systemic immune responses. METHODS The most recent literature on the role of lipids in stimulation of immune responses was selected for this review. The vast majority of reviewed papers were published in the last decade. Older but significant findings are also cited. RESULTS This review focuses on the development of lipopeptide vaccine systems including application of palmitic acid, bacterial lipopeptides, glycolipids and the lipid core peptide and their routes of administration. The use of liposomes as a delivery system that incorporates lipopeptides is discussed. The review also includes a brief description of immune system in relation to vaccinology and discussion on vaccine delivery routes. CONCLUSION Lipids and their conjugates are an ideal frontrunner in the development of safe and efficient vaccines for different immunisation routes.
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Affiliation(s)
- Stacey Bartlett
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD, 4072, Australia
| | - Mariusz Skwarczynski
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD, 4072, Australia
| | - Istvan Toth
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD, 4072, Australia.,The University of Queensland, School of Pharmacy, Woolloongabba, QLD 4102, Australia.,The University of Queensland, Institute for Molecular Bioscience, St Lucia, QLD 4072, Australia
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5
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Fleck JD, Betti AH, da Silva FP, Troian EA, Olivaro C, Ferreira F, Verza SG. Saponins from Quillaja saponaria and Quillaja brasiliensis: Particular Chemical Characteristics and Biological Activities. Molecules 2019; 24:E171. [PMID: 30621160 PMCID: PMC6337100 DOI: 10.3390/molecules24010171] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/13/2018] [Accepted: 12/28/2018] [Indexed: 12/21/2022] Open
Abstract
Quillaja saponaria Molina represents the main source of saponins for industrial applications. Q. saponaria triterpenoids have been studied for more than four decades and their relevance is due to their biological activities, especially as a vaccine adjuvant and immunostimulant, which have led to important research in the field of vaccine development. These saponins, alone or incorporated into immunostimulating complexes (ISCOMs), are able to modulate immunity by increasing antigen uptake, stimulating cytotoxic T lymphocyte production (Th1) and cytokines (Th2) in response to different antigens. Furthermore, antiviral, antifungal, antibacterial, antiparasitic, and antitumor activities are also reported as important biological properties of Quillaja triterpenoids. Recently, other saponins from Q. brasiliensis (A. St.-Hill. & Tul.) Mart. were successfully tested and showed similar chemical and biological properties to those of Q. saponaria barks. The aim of this manuscript is to summarize the current advances in phytochemical and pharmacological knowledge of saponins from Quillaja plants, including the particular chemical characteristics of these triterpenoids. The potential applications of Quillaja saponins to stimulate further drug discovery research will be provided.
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Affiliation(s)
- Juliane Deise Fleck
- Molecular Microbiology Laboratory, Institute of Health Sciences, Feevale University, Novo Hamburgo 93525-075, RS, Brazil.
| | - Andresa Heemann Betti
- Bioanalysis Laboratory, Institute of Health Sciences, Feevale University, Novo Hamburgo 93525-075, RS, Brazil.
| | - Francini Pereira da Silva
- Molecular Microbiology Laboratory, Institute of Health Sciences, Feevale University, Novo Hamburgo 93525-075, RS, Brazil.
| | - Eduardo Artur Troian
- Molecular Microbiology Laboratory, Institute of Health Sciences, Feevale University, Novo Hamburgo 93525-075, RS, Brazil.
| | - Cristina Olivaro
- Science and Chemical Technology Department, University Center of Tacuarembó, Udelar, Tacuarembó 45000, Uruguay.
| | - Fernando Ferreira
- Organic Chemistry Department, Carbohydrates and Glycoconjugates Laboratory, Udelar, Mondevideo 11600, Uruguay.
| | - Simone Gasparin Verza
- Molecular Microbiology Laboratory, Institute of Health Sciences, Feevale University, Novo Hamburgo 93525-075, RS, Brazil.
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Spray dried cubosomes with ovalbumin and Quil-A as a nanoparticulate dry powder vaccine formulation. Int J Pharm 2018; 550:35-44. [DOI: 10.1016/j.ijpharm.2018.08.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 08/17/2018] [Accepted: 08/18/2018] [Indexed: 01/30/2023]
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7
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Zhang XP, Li YD, Luo LL, Liu YQ, Li Y, Guo C, Li ZD, Xie XR, Song HX, Yang LP, Sun SB, An FY. Astragalus Saponins and Liposome Constitute an Efficacious Adjuvant Formulation for Cancer Vaccines. Cancer Biother Radiopharm 2018; 33:25-31. [PMID: 29466034 DOI: 10.1089/cbr.2017.2369] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cancer vaccines mostly aim to induce cytotoxic T lymphocytes (CTLs) against tumors. An appropriate adjuvant is of fundamental importance for inducing cellular immune response. Since the antigen in particulate form is substantially more immunogenic than soluble form antigen, it is beneficial to interact with antigen-presenting cells membrane to induce robust CD8+ T cell activation following vaccination. Based on previous research, we designed an adjuvant formulation by combining Astragalus saponins, cholesterol, and liposome to incorporate antigen into a particulate delivery system, so as to enhance cellular immune response. Meanwhile, angiogenesis contributes to tumor growth and metastasis, and basic fibroblast growth factor (bFGF) is involved in tumor angiogenesis. Therefore, using lipo-saponins adjuvant formulation and a human recombinant bFGF antigen protein, we tried to induce bFGF-specific CTL response to inhibit tumor angiogenesis to achieve antitumor activity. After five immunizations, the lipo-saponins/bFGF complex elicited robust antibody response and markedly higher amount of interferon-γ in BALB/c mice, resulting in superior antitumor activities. Decreased microvessel density in CD31 immunohistochemistry and the lysis of vascular endothelial cells by the T lymphocytes from the immunized mice indicated that the immunity inhibited the angiogenesis of tumors and further led to the inhibition of tumors. Our data suggest that the approach to construct adjuvant formulation between liposome and Astragalus saponins appeared highly desirable, and that Astragalus saponins may be utilized as a valuable additive for enhancing the effectiveness of vaccines and stimulating an appropriate immune response that can benefit tumor therapy.
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Affiliation(s)
- Xiao-Ping Zhang
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Ying-Dong Li
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Lu-Lu Luo
- 2 Affiliated Hospital, Gansu University of Chinese Medicine , Lanzhou, China
| | - Yong-Qi Liu
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Yang Li
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Chao Guo
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Zhen-Dong Li
- 3 Department of Ultrasound, The Second Hospital of Lanzhou University , Lanzhou, China
| | - Xiao-Rong Xie
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Hai-Xia Song
- 4 Department of Radiotherapy, Tumor Hospital of Gansu Province , Lanzhou, China
| | - Li-Ping Yang
- 5 Department of Oncology, The First Hospital of Lanzhou University , Lanzhou, China
| | - Shao-Bo Sun
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
| | - Fang-Yu An
- 1 Institute of Integrated Traditional Chinese and Western Medicine, Gansu University of Chinese Medicine , Lanzhou, China
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8
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Zhang X, Li NL, Guo C, Li YD, Luo LL, Liu YQ, Duan YY, Li ZD, Xie XR, Song HX, Yang LP, An FY. A vaccine targeting basic fibroblast growth factor elicits a protective immune response against murine melanoma. Cancer Biol Ther 2018; 19:518-524. [PMID: 29405828 PMCID: PMC5927703 DOI: 10.1080/15384047.2018.1435223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 01/11/2018] [Accepted: 01/28/2018] [Indexed: 01/05/2023] Open
Abstract
Tumor growth and metastasis are closely related to angiogenesis. Basic fibroblast growth factor(bFGF) is an angiogenic factor, and up-regulated expression of bFGF plays a crucial role in the development and metastasis of melanoma. Therefore, in this study, we sought to achieve antitumor activity by immunity targeting bFGF which would inhibit tumor angiogenesis and simultaneously induce bFGF specific cytotoxic T lymphocytes to kill melanoma cells. A human bFGF protein was used as exogenous antigen, coupled with a saponin-liposome adjuvant formulation to enhance CTL response. The results showed that the immunity induced strong immune response and produced prominent anti-cancer activities. CD31 immunohistochemistry and alginate-encapsulated tumor cell assay displayed that tumor angiogenesis was effectively inhibited. Further, the higher production of IFN-γ and cytotoxic T lymphocyte killing assay suggested that the anti-cancer activities may mainly depend on cellular immune response, which could cause the inhibition of tumor angiogenesis and specific killing of tumor cells by bFGF-specific cytotoxic T lymphocytes. We concluded that immunotherapy targeting bFGF may be a prominent strategy for melanoma, and that the adjuvant formulation of saponin-liposome is very desirable in enhancing cytotoxic T lymphocytes response.
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Affiliation(s)
- Xiaoping Zhang
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Neng-Lian Li
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Chao Guo
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Ying-Dong Li
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Lu-Lu Luo
- Affiliated Hospital, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Yong-Qi Liu
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Yun-Yan Duan
- Experiment Teaching Center, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Zhen-Dong Li
- Department of Ultrasound, The second Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiao-Rong Xie
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
| | - Hai-Xia Song
- Radiotherapy Department, Tumor Hospital of Gansu Province, Lanzhou, Gansu, China
| | - Li-Ping Yang
- Oncology Department, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Fang-Yu An
- Institute of Integrated Traditional Chinese and Westen Medicine, Gansu University of Chinese Medicine, Lanzhou, Gansu, China
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Bobbala S, Gibson B, Gamble AB, McDowell A, Hook S. Poloxamer 407-chitosan grafted thermoresponsive hydrogels achieve synchronous and sustained release of antigen and adjuvant from single-shot vaccines. Immunol Cell Biol 2018; 96:656-665. [PMID: 29499080 DOI: 10.1111/imcb.12031] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/24/2018] [Accepted: 02/26/2018] [Indexed: 01/22/2023]
Abstract
Sustained-release vaccine delivery systems may enhance the immunogenicity of subunit vaccines and reduce the need for multiple vaccinations. The aim of this study was to develop a thermoresponsive hydrogel using poloxamer 407-chitosan (CP) grafted copolymer as a delivery system for single-shot sustained-release vaccines. The CP copolymer was synthesized using 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide chemistry. The CP copolymer was a free flowing solution at ambient temperature and transformed rapidly into a gel at body temperature. The hydrogels were loaded with vaccine antigen and adjuvants or the vaccine components were encapsulated in poly (lactic-co-glycolic acid) nanoparticles in order to ensure synchronous release. The CP hydrogels were stable for up to 18 days in vitro. Release of both nanoparticles and the individual components was complete, with release of the individual components being modulated by incorporation into nanoparticles. In vivo, a single dose of CP hydrogel vaccine induced strong, long lasting, cellular and humoral responses that could protect against the development of tumors in a murine melanoma model.
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Affiliation(s)
- Sharan Bobbala
- School of Pharmacy, University of Otago, Dunedin, New Zealand.,Department of Biomedical Engineering, Northwestern University, Evanston, IL, USA
| | - Blake Gibson
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Allan B Gamble
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Arlene McDowell
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Sarah Hook
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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10
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Zhang C, Zhang J, Shi G, Song H, Shi S, Zhang X, Huang P, Wang Z, Wang W, Wang C, Kong D, Li C. A Light Responsive Nanoparticle-Based Delivery System Using Pheophorbide A Graft Polyethylenimine for Dendritic Cell-Based Cancer Immunotherapy. Mol Pharm 2017; 14:1760-1770. [DOI: 10.1021/acs.molpharmaceut.7b00015] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chuangnian Zhang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Ju Zhang
- Basic Nursing T&R Section, School of Nursing, Qingdao University, Qingdao, Shandong Province 26000, China
| | - Gaona Shi
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Huijuan Song
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Shengbin Shi
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Xiuyuan Zhang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Pingsheng Huang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Zhihong Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Weiwei Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
| | - Chun Wang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
- Department
of Biomedical Engineering, University of Minnesota, 7-105 Hasselmo Hall, 312 Church Street South East, Minneapolis, Minnesota 55455, United States
| | - Deling Kong
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
- State
Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive
Materials, Ministry of Education, Nankai University, Tianjin, 300071, China
| | - Chen Li
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300192, China
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11
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Fuchs LI, Fort MC, Cano D, Bonetti CM, Giménez HD, Vázquez PM, Bacigalupe D, Breccia JD, Campero CM, Oyhenart JA. Clearance of Tritrichomonas foetus in experimentally infected heifers protected with vaccines based on killed-T. foetus with different adjuvants. Vaccine 2017; 35:1341-1346. [PMID: 28185741 DOI: 10.1016/j.vaccine.2016.12.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/13/2016] [Accepted: 12/14/2016] [Indexed: 11/15/2022]
Abstract
Tritrichomonas foetus is a flagellated protozoan that causes a sexually transmitted disease in cattle. Trichomonosis is characterized by early abortions, subfertility and a significant decrease in productivity. Vaccine preparations containing whole T. foetus can reduce the time of residence of the pathogen in the host cervix after experimental infection. Here, T. foetus vaccines prepared with different adjuvants were tested, in parallel with a commercial vaccine, for their efficacy to clear the infection. The median time for clearance of infection was 69days in non-immunized animals, 55days in animals treated with aluminum hydroxide, 41days with oil-in-water or saponin based vaccines or with a commercial vaccine and 27days in animals treated with saponin plus aluminum hydroxide. A slight increase in the risk of T. foetus clearance from the genital tract was found with the saponin based vaccine (hazard ratio, 2.52; 95% confidence interval, 1.03-6.17) or the commercial vaccine (hazard ratio, 2.61; 95% confidence interval, 1.07-6.38). A significant increase in the risk of T. foetus clearance was found with the combination of saponin plus aluminum hydroxide based vaccine (hazard ratio, 5.12; 95% confidence interval, 2.04-12.83).
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Affiliation(s)
- Lumila I Fuchs
- Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta 5 km 580, Anguil, La Pampa, Argentina
| | - Marcelo C Fort
- Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta 5 km 580, Anguil, La Pampa, Argentina
| | - Dora Cano
- Instituto Nacional de Tecnología Agropecuaria (INTA), 7620 Balcarce, Argentina
| | - Carina M Bonetti
- Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta 5 km 580, Anguil, La Pampa, Argentina
| | - Hugo D Giménez
- Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta 5 km 580, Anguil, La Pampa, Argentina
| | - Pablo M Vázquez
- Instituto Nacional de Tecnología Agropecuaria (INTA), Ruta 5 km 580, Anguil, La Pampa, Argentina
| | - Diana Bacigalupe
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata (UNLP), Argentina
| | - Javier D Breccia
- INCITAP, CONICET-UNLPam, Uruguay 151, Santa Rosa, La Pampa, Argentina
| | - Carlos M Campero
- Instituto Nacional de Tecnología Agropecuaria (INTA), 7620 Balcarce, Argentina
| | - Jorge A Oyhenart
- INCITAP, CONICET-UNLPam, Uruguay 151, Santa Rosa, La Pampa, Argentina.
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12
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Giddam AK, Reiman JM, Zaman M, Skwarczynski M, Toth I, Good MF. A semi-synthetic whole parasite vaccine designed to protect against blood stage malaria. Acta Biomater 2016; 44:295-303. [PMID: 27544810 DOI: 10.1016/j.actbio.2016.08.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 08/12/2016] [Accepted: 08/16/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED Although attenuated malaria parasitized red blood cells (pRBCs) are promising vaccine candidates, their application in humans may be restricted for ethical and regulatory reasons. Therefore, we developed an organic microparticle-based delivery platform as a whole parasite malaria-antigen carrier to mimic pRBCs. Killed blood stage parasites were encapsulated within liposomes that are targeted to antigen presenting cells (APCs). Mannosylated lipid core peptides (MLCPs) were used as targeting ligands for the liposome-encapsulated parasite antigens. MLCP-liposomes, but not unmannosylated liposomes, were taken-up efficiently by APCs which then significantly upregulated expression of MHC-ll and costimulatory molecules, CD80 and CD86. Two such vaccines using rodent model systems were constructed - one with Plasmodium chabaudi and the other with P. yoelii. MLCP-liposome vaccines were able to control the parasite burden and extended the survival of mice. Thus, we have demonstrated an alternative delivery system to attenuated pRBCs with similar vaccine efficacy and added clinical advantages. Such liposomes are promising candidates for a human malaria vaccine. STATEMENT OF SIGNIFICANCE Attenuated whole parasite-based vaccines, by incorporating all parasite antigens, are very promising candidates, but issues relating to production, storage and safety concerns are significantly slowing their development. We therefore developed a semi-synthetic whole parasite malaria vaccine that is easily manufactured and stored. Two such prototype vaccines (a P. chabaudi and a P. yoelii vaccine) have been constructed. They are non-infectious, highly immunogenic and give good protection profiles. This semi-synthetic delivery platform is an exciting strategy to accelerate the development of a licensed malaria vaccine. Moreover, this strategy can be potentially applied to a wide range of pathogens.
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13
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Bobbala S, Tamboli V, McDowell A, Mitra AK, Hook S. Novel Injectable Pentablock Copolymer Based Thermoresponsive Hydrogels for Sustained Release Vaccines. AAPS JOURNAL 2015; 18:261-9. [PMID: 26589309 DOI: 10.1208/s12248-015-9843-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 10/22/2015] [Indexed: 02/07/2023]
Abstract
The need for multiple vaccinations to enhance the immunogenicity of subunit vaccines may be reduced by delivering the vaccine over an extended period of time. Here, we report two novel injectable pentablock copolymer based thermoresponsive hydrogels made of polyethyleneglycol-polycaprolactone-polylactide-polycaprolactone-polyethyleneglycol (PEG-PCL-PLA-PCL-PEG) with varying ratios of polycaprolactone (PCL) and polylactide (PLA), as single shot sustained release vaccines. Pentablock copolymer hydrogels were loaded with vaccine-encapsulated poly lactic-co-glycolic acid nanoparticles (PLGA-NP) or with the soluble vaccine components. Incorporation of PLGA-NP into the thermoresponsive hydrogels increased the complex viscosity of the gels, lowered the gelation temperature, and minimized the burst release of antigen and adjuvants. The two pentablock hydrogels stimulated both cellular and humoral responses. The addition of PLGA-NP to the hydrogels sustained immune responses for up to 49 days. The polymer with a higher ratio of PCL to PLA formed a more rigid gel, induced stronger immune responses, and stimulated effective anti-tumor responses in a prophylactic melanoma tumor model.
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Affiliation(s)
- Sharan Bobbala
- School of Pharmacy, University of Otago, Dunedin, 9054, New Zealand
| | - Viral Tamboli
- School of Pharmacy, UMKC, Kansas City, Missouri, USA
| | - Arlene McDowell
- School of Pharmacy, University of Otago, Dunedin, 9054, New Zealand
| | - Ashim K Mitra
- School of Pharmacy, UMKC, Kansas City, Missouri, USA
| | - Sarah Hook
- School of Pharmacy, University of Otago, Dunedin, 9054, New Zealand.
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14
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Bobbala S, McDowell A, Hook S. Quantitation of the immunological adjuvants, monophosphoryl lipid A and Quil A in poly (lactic-co-glycolic acid) nanoparticles using high performance liquid chromatography with evaporative light scattering detection. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 975:45-51. [DOI: 10.1016/j.jchromb.2014.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 10/22/2014] [Accepted: 11/08/2014] [Indexed: 11/30/2022]
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15
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Self-Amplifying mRNA Vaccines. NONVIRAL VECTORS FOR GENE THERAPY - PHYSICAL METHODS AND MEDICAL TRANSLATION 2015; 89:179-233. [DOI: 10.1016/bs.adgen.2014.10.005] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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Giddam AK, Zaman M, Skwarczynski M, Toth I. Liposome-based delivery system for vaccine candidates: constructing an effective formulation. Nanomedicine (Lond) 2012; 7:1877-93. [DOI: 10.2217/nnm.12.157] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The discovery of liposomes in 1965 by Bangham and coworkers changed the prospects of drug delivery systems. Since then, the application of liposomes as vaccine delivery systems has been studied extensively. Liposomal vaccine delivery systems are made up of nano- or micro-sized vesicles consisting of phospholipid bilayers, in which the bioactive molecule is encapsulated/entrapped, adsorbed or surface coupled. In general, liposomes are not immunogenic on their own; thus, liposomes combined with immunostimulating ligands (adjuvants) or various other formulations have been used as vaccine delivery systems. A thorough understanding of formulation parameters allows the design of effective liposomal vaccine delivery systems. This article provides an overview of various factors that influence liposomal immunogenicity. In particular, the effects of vesicle size, surface charge, bilayer composition, lamellarity, pegylation and targeting of liposomes are described.
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Affiliation(s)
- Ashwini Kumar Giddam
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD 4072, Australia
| | - Mehfuz Zaman
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD 4072, Australia
| | - Mariusz Skwarczynski
- The University of Queensland, School of Chemistry & Molecular Biosciences, St Lucia, QLD 4072, Australia
| | - Istvan Toth
- The University of Queensland, School of Pharmacy, St Lucia, QLD 4072, Australia
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17
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Gordon S, Young K, Wilson R, Rizwan S, Kemp R, Rades T, Hook S. Chitosan hydrogels containing liposomes and cubosomes as particulate sustained release vaccine delivery systems. J Liposome Res 2011; 22:193-204. [DOI: 10.3109/08982104.2011.637502] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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18
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White KL, Rades T, Furneaux RH, Tyler PC, Hook S. Mannosylated liposomes as antigen delivery vehicles for targeting to dendritic cells. J Pharm Pharmacol 2010; 58:729-37. [PMID: 16734974 DOI: 10.1211/jpp.58.6.0003] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Abstract
The immune stimulating ability of mannosylated liposomes containing FITC-ovalbumin as a model antigen and displaying either a branched tri-mannose or a mono-mannose ligand on the liposome surface was investigated in human monocyte-derived dendritic cells (MoDCs) and murine bone-marrow-derived dendritic cells (BMDCs). Uptake of liposomes, dendritic cell activation and proliferation of CD8+ T cells from OT-I transgenic mice were determined by flow cytometry. Uptake of liposomes displaying the tri-mannose ligand was enhanced in human MoDCs compared with both non-mannosylated liposomes and liposomes displaying mono-mannose ligands. However, this increased uptake did not result in an increase in expression of CD80 or CD86 on the surface of the MoDCs. In contrast, neither tri-mannose- nor mono-mannose-containing liposomes were taken up by murine BMDCs to a greater extent than non-mannose-containing liposomes. The expression of CD86 and CD40 on the surface of BMDCs was not increased after exposure to mannosylated lipo-somes and BMDCs incubated with mannosylated liposomes were not able to stimulate proliferation of CD8+ T cells to any greater extent than BMDCs incubated with non-mannosylated liposomes. These findings suggest that while mannose-containing ligands can enhance the uptake of antigen-containing liposomes by some dendritic cells, important differences in the affinity of carbohydrate-binding receptors for mannose-containing ligands do exist between species. In addition, the increase in uptake of antigen by dendritic cells using mannosylated liposomes does not necessarily result in enhanced dendritic cell activation.
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Affiliation(s)
- Karen L White
- School of Pharmacy, University of Otago, PO Box 913, Dunedin, New Zealand
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19
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Myschik J, Eberhardt F, Rades T, Hook S. Immunostimulatory biodegradable implants containing the adjuvant Quil-A—Part I: Physicochemical characterisation. J Drug Target 2008; 16:213-23. [DOI: 10.1080/10611860701848860] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Myschik J, Mcburney WT, Hennessy T, Phipps-Green A, Rades T, Hook S. Immunostimulatory biodegradable implants containing the adjuvant Quil-A—Part II:In vivoevaluation. J Drug Target 2008; 16:224-32. [DOI: 10.1080/10611860701848886] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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21
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Demana PH, Davies NM, Hook S, Rades T. Analysis of Quil A–phospholipid mixtures using drift spectroscopy. Int J Pharm 2007; 342:49-61. [PMID: 17555894 DOI: 10.1016/j.ijpharm.2007.04.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2006] [Revised: 04/24/2007] [Accepted: 04/29/2007] [Indexed: 11/28/2022]
Abstract
The aim of this study was to investigate molecular interactions between Quil A and phosphatidylcholine in the solid state using diffuse reflectance infrared Fourier-transform spectroscopy (DRIFTS). Analysis of the interactions was characterized on the different regions of phosphatidylcholine: hydrophobic chain, interfacial and headgroup regions. The spectra of the hydrocarbon region of phosphatidylcholine alone compared to that for the binary mixture of Quil A and phosphatidylcholine were similar. These findings suggest that Quil A did not cause conformational disorder of the fatty acyl chains of the phospholipid. In contrast, a shift in the wavenumber of the choline group and a broad band in this moiety indicate a modification of the phospholipid in the headgroup region due to interaction between Quil A and phosphatidylcholine. These results suggest possibly ionic interactions between the negatively charged glucuronic acid moiety of the Quil A molecule with the positively charged choline group. The findings could also be the result of conformational changes in the choline group because of the intercalation of sugar moieties in Quil A between the choline and phosphate groups due to hydrogen bonding. Shift of wavenumbers to lower values on the carbonyl group was observed suggesting hydrogen bonding between Quil A and phosphatidylcholine. The difference in degrees of wavenumber shift (choline>phosphate>carbonyl group) and observed broad bands indicated that Quil A preferentially interacted with phosphatidylcholine on the hydrophilic headgroup. Cholesterol influenced such interactions at relatively high concentration (60%, w/w).
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Affiliation(s)
- Patrick H Demana
- School of Pharmacy, Tshwane University of Technology, Pretoria, South Africa.
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22
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Xiang SD, Scholzen A, Minigo G, David C, Apostolopoulos V, Mottram PL, Plebanski M. Pathogen recognition and development of particulate vaccines: does size matter? Methods 2007; 40:1-9. [PMID: 16997708 DOI: 10.1016/j.ymeth.2006.05.016] [Citation(s) in RCA: 439] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2006] [Accepted: 05/05/2006] [Indexed: 01/08/2023] Open
Abstract
The use of particulate carriers holds great promise for the development of effective and affordable recombinant vaccines. Rational development requires a detailed understanding of particle up-take and processing mechanisms to target cellular pathways capable of stimulating the required immune responses safely. These mechanisms are in turn based on how the host has evolved to recognize and process pathogens. Pathogens, as well as particulate vaccines, come in a wide range of sizes and biochemical compositions. Some of these also provide 'danger signals' so that antigen 'senting cells (APC), usually dendritic cells (DC), acquire specific stimulatory activity. Herein, we provide an overview of the types of particles currently under investigation for the formulation of vaccines, discuss cellular uptake mechanisms (endocytosis, macropinocytosis, phagocytosis, clathrin-dependent and/or caveloae-mediated) for pathogens and particles of different sizes, as well as antigen possessing and presentation by APC in general, and DC in particular. Since particle size and composition can influence the immune response, inducing humoral and/or cellular immunity, activating CD8 T cells and/or CD4 T cells of T helper 1 and/or T helper 2 type, particle characteristics have a major impact on vaccine efficacy. Recently developed methods for the formulation of particulate vaccines are presented in this issue of Methods, showcasing a range of "cutting edge" particulate vaccines that employ particles ranging from nano to micro-sized. This special issue of Methods further addresses practical issues of production, affordability, reproducibility and stability of formulation, and also includes a discussion of the economic and regulatory challenges encountered in developing vaccines for veterinary use and for common Third World infectious diseases.
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Affiliation(s)
- Sue D Xiang
- Vaccine and Infectious Diseases Laboratory, Burnet Institute at Austin, Studley Road, Heidelberg, Vic. 3084, Australia
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23
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Myschik J, Lendemans DG, McBurney WT, Demana PH, Hook S, Rades T. On the preparation, microscopic investigation and application of ISCOMs. Micron 2006; 37:724-34. [PMID: 16750912 DOI: 10.1016/j.micron.2006.03.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2006] [Revised: 03/06/2006] [Accepted: 03/07/2006] [Indexed: 10/24/2022]
Abstract
ISCOM matrices constitute colloidal structures formed from Quillaja saponins, cholesterol and phospholipid. Addition of protein antigens to these matrices leads to the formation of ISCOMs. In this review we report on microscopic investigations of ISCOM matrices and ISCOMs as well as related colloidal structures, such as helices, worm-like micelles, ring-like micelles, and lamellae structures. We briefly outline the immunologic basis for the use of ISCOMs as vaccine delivery systems, and describe the various methods to form ISCOMs. Negative staining transmission electron micrographs of all colloidal structures are presented and described. On the basis of our microscopic investigations, different formation mechanisms of ISCOMS are discussed.
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Affiliation(s)
- Julia Myschik
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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24
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White K, Rades T, Kearns P, Toth I, Hook S. Immunogenicity of Liposomes Containing Lipid Core Peptides and the Adjuvant Quil A. Pharm Res 2006; 23:1473-81. [PMID: 16779706 DOI: 10.1007/s11095-006-0272-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2005] [Accepted: 02/21/2006] [Indexed: 10/24/2022]
Abstract
PURPOSE The purpose of this study was to investigate the immunogenicity of liposomes containing mannosylated lipid core peptide (manLCP) constructs, both in vitro and in vivo, with or without the addition of the immune stimulating adjuvant Quil A. METHODS Mouse bone marrow dendritic cells (BMDC) were cultured with liposome formulations for 48 h, and the resulting level of BMDC activation was determined by flow cytometry. BMDC pulsed with liposome formulations were incubated with 5,6-carboxyfluoroscein diacetate succinimidyl ester-labeled T cells for 72 h and the resulting T cell proliferation was determined by flow cytometry. To investigate the immunogenicity of formulations in vivo, groups of C57Bl/6J mice were immunized by subcutaneous injection, and the resulting antigen-specific cytotoxic and protective immune responses toward tumor challenge evaluated. RESULTS Despite being unable to demonstrate the activation of BMDC, BMDC pulsed with liposomes containing manLCP constructs were able to stimulate the proliferation of naïve T cells in vitro. However, in vivo only liposomes containing both manLCP and Quil A were able to stimulate a strong antigen-specific cytotoxic immune response. Liposomes containing manLCP and Quil A within the same particle were able to protect against the growth of tumor cells to a similar level as if the antigen was administered in alum with CD4 help. CONCLUSION ManLCPs administered in liposomes are able to stimulate strong cytotoxic and protective immune responses if Quil A is also incorporated as an adjuvant.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Animals
- Antigens, CD/immunology
- Antigens, Differentiation, Myelomonocytic/immunology
- Bone Marrow Cells/immunology
- Cancer Vaccines/administration & dosage
- Cancer Vaccines/chemistry
- Cancer Vaccines/immunology
- Cell Proliferation
- Cells, Cultured
- Chemistry, Pharmaceutical
- Dendritic Cells/immunology
- Epitopes, T-Lymphocyte/administration & dosage
- Epitopes, T-Lymphocyte/chemistry
- Epitopes, T-Lymphocyte/immunology
- Injections, Subcutaneous
- Lipoproteins/administration & dosage
- Lipoproteins/chemical synthesis
- Lipoproteins/immunology
- Liposomes/chemistry
- Mannose/administration & dosage
- Mannose/chemistry
- Mannose/immunology
- Mice
- Mice, Inbred C57BL
- Neoplasms, Experimental/immunology
- Neoplasms, Experimental/prevention & control
- Peptide Fragments/administration & dosage
- Peptide Fragments/chemistry
- Peptide Fragments/immunology
- Phospholipids/administration & dosage
- Phospholipids/chemistry
- Phospholipids/immunology
- Quillaja Saponins
- Saponins/administration & dosage
- Saponins/immunology
- T-Lymphocytes, Cytotoxic/immunology
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Affiliation(s)
- Karen White
- School of Pharmacy, University of Otago, PO Box 913, Dunedin, New Zealand
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