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Exploring dendrimer-based drug delivery systems and their potential applications in cancer immunotherapy. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111471] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Rawding PA, Bu J, Wang J, Kim D, Drelich AJ, Kim Y, Hong S. Dendrimers for cancer immunotherapy: Avidity-based drug delivery vehicles for effective anti-tumor immune response. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2022; 14:e1752. [PMID: 34414690 PMCID: PMC9485970 DOI: 10.1002/wnan.1752] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/25/2021] [Accepted: 07/29/2021] [Indexed: 12/19/2022]
Abstract
Cancer immunotherapy, or the utilization of a patient's own immune system to treat cancer, has shifted the paradigm of cancer treatment. Despite meaningful responses being observed in multiple studies, currently available immunotherapy platforms have only proven effective to a small subset of patients. To address this, nanoparticles have been utilized as a novel carrier for immunotherapeutic drugs, achieving robust anti-tumor effects with increased adaptive and durable responses. Specifically, dendrimer nanoparticles have attracted a great deal of scientific interest due to their versatility in various therapeutic applications, resulting from their unique physicochemical properties and chemically well-defined architecture. This review offers a comprehensive overview of dendrimer-based immunotherapy technologies, including their formulations, biological functionalities, and therapeutic applications. Common formulations include: (1) modulators of cytokine secretion of immune cells (adjuvants); (2) facilitators of the recognition of tumorous antigens (vaccines); (3) stimulators of immune effectors to selectively attack cells expressing specific antigens (antibodies); and (4) inhibitors of immune-suppressive responses (immune checkpoint inhibitors). On-going works and prospects of dendrimer-based immunotherapies are also discussed. Overall, this review provides a critical overview on rapidly growing dendrimer-based immunotherapy technologies and serves as a guideline for researchers and clinicians who are interested in this field. This article is categorized under: Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Piper A Rawding
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA,Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Jiyoon Bu
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA,Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Jianxin Wang
- Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - DaWon Kim
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA,Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Adam J Drelich
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA,Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Youngsoo Kim
- Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Seungpyo Hong
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, WI 53705, USA,Wisconsin Center for NanoBioSystems, University of Wisconsin-Madison, Madison, WI 53705, USA,Yonsei Frontier Lab and Department of Pharmacy, Yonsei University, Seoul 03722, Republic of Korea
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Liu Y, Wang K, Massoud TF, Paulmurugan R. SARS-CoV-2 Vaccine Development: An Overview and Perspectives. ACS Pharmacol Transl Sci 2020; 3:844-858. [PMID: 33062951 PMCID: PMC7526333 DOI: 10.1021/acsptsci.0c00109] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Indexed: 01/08/2023]
Abstract
Coronavirus disease 2019, abbreviated as COVID-19, is caused by a new strain of coronavirus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). It started in late December 2019 in Wuhan, China, and by mid-March 2020, the disease had spread globally. As of July 17, 2020, this pandemic virus has infected 13.9 million people and claimed the life of approximately 593 000 people globally, and the numbers continue to climb. An unprecedented effort is underway to develop therapeutic and prophylactic strategies against this disease. Various drugs and vaccines are undergoing rapid development, and some of these are already in phase III clinical trials. Although Russia was the first to release a vaccine by skipping phase III clinical trials, there is no evidence of large-scale clinical trials, and the safety and efficacy of the vaccine are still a concern. Nevertheless, critical lessons can be learned and data garnered for developing promising vaccines against this rapidly emerging virus or other similar pathogens in the future. In this overview, we cover the available information on the various vaccine development initiatives by different companies, the potential strategies adopted for vaccine design, and the challenges and clinical impact expected from these vaccines. We also briefly discuss the possible role of these vaccines and the specific concerns for their use in patients with pre-existing disease conditions such as cardiovascular, lung, kidney, and liver diseases, cancer patients who are receiving immunosuppressive medications, including anticancer chemotherapies, and many other sensitive populations, such as children and the elderly.
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Affiliation(s)
- Yi Liu
- Molecular
Imaging Program at Stanford (MIPS), Stanford
University, 3155 Porter Drive, Palo Alto, California 94304, United States
- Department
of Critical Care Medicine, The Second Affiliated
Hospital of Chongqing Medical University, Chongqing, China
| | - Kai Wang
- Molecular
Imaging Program at Stanford (MIPS), Stanford
University, 3155 Porter Drive, Palo Alto, California 94304, United States
| | - Tarik F. Massoud
- Molecular
Imaging Program at Stanford (MIPS), Stanford
University, 3155 Porter Drive, Palo Alto, California 94304, United States
| | - Ramasamy Paulmurugan
- Molecular
Imaging Program at Stanford (MIPS), Stanford
University, 3155 Porter Drive, Palo Alto, California 94304, United States
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Fagan V, Hussein WM, Su M, Giddam AK, Batzloff MR, Good MF, Toth I, Simerska P. Synthesis, Characterization and Immunological Evaluation of Self‐Adjuvanting Group A Streptococcal Vaccine Candidates Bearing Various Lipidic Adjuvanting Moieties. Chembiochem 2017; 18:545-553. [DOI: 10.1002/cbic.201600639] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Vincent Fagan
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
| | - Waleed M. Hussein
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
| | - Mei Su
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
| | - Ashwini K. Giddam
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
| | | | - Michael F. Good
- Institute for Glycomics Griffith University Gold Coast 4215 Australia
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
- School of Pharmacy Pharmacy Australia Centre of Excellence The University of Queensland Cornwall Street Woolloongabba QLD 4072 Australia
- Institute for Molecular Bioscience The University of Queensland St. Lucia QLD 4072 Australia
| | - Pavla Simerska
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St. Lucia QLD 4072 Australia
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Apte SH, Stephenson RJ, Simerska P, Groves PL, Aljohani S, Eskandari S, Toth I, Doolan DL. Systematic evaluation of self-adjuvanting lipopeptide nano-vaccine platforms for the induction of potent CD8(+) T-cell responses. Nanomedicine (Lond) 2015; 11:137-52. [PMID: 26653407 DOI: 10.2217/nnm.15.184] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIM Systematically evaluate lipid core peptide vaccine delivery platforms to identify core features promoting strong CD8(+) T-cell responses. MATERIALS & METHODS Three different self-adjuvanting lipid core peptide nanovaccines each comprising four copies of the dominant ovalbumin CD8(+) T-cell epitope and varying in the utilization of a polylysine or glucose core with 2-amino-hexadecanoic acid (C16) or 2-amino-dodecanoic acid (C12) lipids were synthesized. Vaccines were tested for ability to induce CD8(+) T-cell responses and inhibit tumor growth in vivo. RESULTS The construct utilizing C12 lipids and polylysine core induced very robust effector T cells shown to have in vivo effector capability as demonstrated by in vivo cytotoxicity and ability to inhibit tumor growth as well as modulation of dendritic cell activation. CONCLUSION The C12 polylysine platform was an effective configuration for induction of potent CD8(+) T-cell responses.
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Affiliation(s)
- Simon H Apte
- Infectious Diseases Programme, QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia
| | - Rachel J Stephenson
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Pavla Simerska
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Penny L Groves
- Infectious Diseases Programme, QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia
| | - Salwa Aljohani
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Sharareh Eskandari
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Istvan Toth
- School of Chemistry & Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.,School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4012, Australia.,Institute for Molecular Bioscience, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Denise L Doolan
- Infectious Diseases Programme, QIMR Berghofer Medical Research Institute, Herston, QLD 4006, Australia
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Olive C, Batzloff MR, Toth I. Lipid core peptide technology and group A streptococcal vaccine delivery. Expert Rev Vaccines 2014; 3:43-58. [PMID: 14761243 DOI: 10.1586/14760584.3.1.43] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The antiphagocytic surface M protein of group A streptococcus has been widely studied as the major candidate antigen for a vaccine to prevent group A streptococcus infection. Approaches that have proven to be effective in animal models include the use of multi-epitope vaccines incorporating highly variable amino terminal serotypic determinants, those based on the carboxy terminal conserved region and combination vaccines incorporating both serotypic and conserved region determinants of the M protein. The use of lipid core peptide technology is at the forefront of this research in the quest to develop a broad-strain protective vaccine that can be delivered via the mucosal route, stimulating mucosal and systemic immunity. This review aims to cover the various strategies and technologies that have been investigated with regard to group A streptococcus vaccine design and development.
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Affiliation(s)
- Colleen Olive
- Co-operative Research Centre for Vaccine Technology, The Queensland Institute of Medical Research, PO Royal Brisbane Hospital, Brisbane, Queensland 4029, Australia.
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Zaman M, Toth I. Immunostimulation by synthetic lipopeptide-based vaccine candidates: structure-activity relationships. Front Immunol 2013; 4:318. [PMID: 24130558 PMCID: PMC3793171 DOI: 10.3389/fimmu.2013.00318] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 09/19/2013] [Indexed: 12/23/2022] Open
Abstract
Peptide-based vaccines offer several advantages over conventional whole organism or protein approaches by offering improved purity and specificity in inducing immune response. However, peptides alone are generally non-immunogenic. Concerns remain about the toxicity of adjuvants which are critical for immunogenicity of synthetic peptides. The use of lipopeptides in peptide vaccines is currently under intensive investigation because potent immune responses can be generated without the use of adjuvant (thus are self-adjuvanting). Several lipopeptides derived from microbial origin, and their synthetic versions or simpler fatty acid moieties impart this self-adjuvanting activity by signaling via Toll-like receptor 2 (TLR2). Engagement of this innate immune receptor on antigen-presenting cell leads to the initiation and development of potent immune responses. Therefore optimization of lipopeptides to enhance TLR2-mediated activation is a promising strategy for vaccine development. Considerable structure-activity relationships that determine TLR2 binding and consequent stimulation of innate immune responses have been investigated for a range of lipopeptides. In this mini review we address the development of lipopeptide vaccines, mechanism of TLR2 recognition, and immune activation. An overview is provided of the best studied lipopeptide vaccine systems.
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Affiliation(s)
- Mehfuz Zaman
- School of Chemistry and Molecular Biosciences, The University of Queensland , St Lucia, QLD , Australia
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8
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Fujita Y, Taguchi H. Current status of multiple antigen-presenting peptide vaccine systems: Application of organic and inorganic nanoparticles. Chem Cent J 2011; 5:48. [PMID: 21861904 PMCID: PMC3178480 DOI: 10.1186/1752-153x-5-48] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 08/23/2011] [Indexed: 12/22/2022] Open
Abstract
Many studies are currently investigating the development of safe and effective vaccines to prevent various infectious diseases. Multiple antigen-presenting peptide vaccine systems have been developed to avoid the adverse effects associated with conventional vaccines (i.e., live-attenuated, killed or inactivated pathogens), carrier proteins and cytotoxic adjuvants. Recently, two main approaches have been used to develop multiple antigen-presenting peptide vaccine systems: (1) the addition of functional components, e.g., T-cell epitopes, cell-penetrating peptides, and lipophilic moieties; and (2) synthetic approaches using size-defined nanomaterials, e.g., self-assembling peptides, non-peptidic dendrimers, and gold nanoparticles, as antigen-displaying platforms. This review summarizes the recent experimental studies directed to the development of multiple antigen-presenting peptide vaccine systems.
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Affiliation(s)
- Yoshio Fujita
- Faculty of Pharmaceutical Sciences, Suzuka University of Medical Science, 3500-3, Minami-Tamagaki, Suzuka 513-8670, MIE, Japan.
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Zhang L, Robertson CR, Green BR, Pruess TH, White HS, Bulaj G. Structural requirements for a lipoamino acid in modulating the anticonvulsant activities of systemically active galanin analogues. J Med Chem 2010; 52:1310-6. [PMID: 19199479 DOI: 10.1021/jm801397w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction of lipoamino acid (LAA), Lys-palmitoyl, and cationization into a series of galanin analogues yielded systemically active anticonvulsant compounds. To study the relationship between the LAA structure and anticonvulsant activity, orthogonally protected LAAs were synthesized in which the Lys side chain was coupled to fatty acids varying in length from C(8) to C(18) or was coupled to a monodispersed polyethylene glycol, PEG(4). Galanin receptor affinity, serum stability, lipophilicity (log D), and activity in the 6 Hz mouse model of epilepsy of each of the newly synthesized analogues were determined following systemic administration. The presence of various LAAs or Lys(MPEG(4)) did not affect the receptor binding properties of the modified peptides, but their anticonvulsant activities varied substantially and were generally correlated with their lipophilicity. Our results suggest that varying the length or polarity of the LAA residue adjacent to positively charged amino acid residues may effectively modulate the antiepileptic activity of the galanin analogues.
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Affiliation(s)
- Liuyin Zhang
- Department of Medicinal Chemistry, College of Pharmacy, University of Utah, Salt Lake City, Utah, 84108, USA
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10
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Simerska P, Moyle PM, Toth I. Modern lipid-, carbohydrate-, and peptide-based delivery systems for peptide, vaccine, and gene products. Med Res Rev 2009; 31:520-47. [DOI: 10.1002/med.20191] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Simerska P, Lu H, Toth I. Synthesis of a Streptococcus pyogenes vaccine candidate based on the M protein PL1 epitope. Bioorg Med Chem Lett 2009; 19:821-4. [DOI: 10.1016/j.bmcl.2008.12.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Revised: 11/28/2008] [Accepted: 12/03/2008] [Indexed: 11/27/2022]
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12
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Cini E, Lampariello LR, Rodriquez M, Taddei M. Synthesis and application in SPPS of a stable amino acid isostere of palmitoyl cysteine. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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14
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Abdel-Aal ABM, Batzloff MR, Fujita Y, Barozzi N, Faria A, Simerska P, Moyle PM, Good MF, Toth I. Structure–Activity Relationship of a Series of Synthetic Lipopeptide Self-Adjuvanting Group A Streptococcal Vaccine Candidates. J Med Chem 2007; 51:167-72. [DOI: 10.1021/jm701091d] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abu-Baker M. Abdel-Aal
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Michael R. Batzloff
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Yoshio Fujita
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Nadia Barozzi
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Andres Faria
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Pavla Simerska
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Peter M. Moyle
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Michael F. Good
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
| | - Istvan Toth
- School of Molecular and Microbial Sciences (SMMS), The University of Queensland, St. Lucia 4072, Queensland, Australia, and The Queensland Institute of Medical Research (QIMR), Herston 4029, Queensland, Australia
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15
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Moyle PM, Olive C, Good MF, Toth I. Method for the synthesis of highly pure vaccines using the lipid core peptide system. J Pept Sci 2007; 12:800-7. [PMID: 17131293 DOI: 10.1002/psc.815] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Traditional vaccines consisting of whole attenuated microorganisms, killed microorganisms, or microbial components, administered with an adjuvant (e.g. alum), have been proved to be extremely successful. However, to develop new vaccines, or to improve upon current vaccines, new vaccine development techniques are required. Peptide vaccines offer the capacity to administer only the minimal microbial components necessary to elicit appropriate immune responses, minimizing the risk of vaccination associated adverse effects, and focusing the immune response toward important antigens. Peptide vaccines, however, are generally poorly immunogenic, necessitating administration with powerful, and potentially toxic adjuvants. The attachment of lipids to peptide antigens has been demonstrated as a potentially safe method for adjuvanting peptide epitopes. The lipid core peptide (LCP) system, which incorporates a lipidic adjuvant, carrier, and peptide epitopes into a single molecular entity, has been demonstrated to boost immunogenicity of attached peptide epitopes without the need for additional adjuvants. The synthesis of LCP systems normally yields a product that cannot be purified to homogeneity. The current study describes the development of methods for the synthesis of highly pure LCP analogs using native chemical ligation. Because of the highly lipophilic nature of the LCP lipid adjuvant, difficulties (e.g. poor solubility) were experienced with the ligation reactions. The addition of organic solvents to the ligation buffer solubilized lipidic species, but did not result in successful ligation reactions. In comparison, the addition of approximately 1% (w/v) sodium dodecyl sulfate (SDS) proved successful, enabling the synthesis of two highly pure, tri-epitopic Streptococcus pyogenes LCP analogs. Subcutaneous immunization of B10.BR (H-2(k)) mice with one of these vaccines, without the addition of any adjuvant, elicited high levels of systemic IgG antibodies against each of the incorporated peptides.
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Affiliation(s)
- Peter M Moyle
- School of Molecular and Microbial Biosciences, The University of Queensland, St Lucia, Queensland, Australia
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16
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Moyle PM, Olive C, Ho MF, Good MF, Toth I. Synthesis of a highly pure lipid core peptide based self-adjuvanting triepitopic group A streptococcal vaccine, and subsequent immunological evaluation. J Med Chem 2006; 49:6364-70. [PMID: 17034142 DOI: 10.1021/jm060475m] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed a highly pure, self-adjuvanting, triepitopic Group A Streptococcal vaccine based on the lipid core peptide system, a vaccine delivery system incorporating lipidic adjuvant, carrier, and peptide epitopes into a single molecular entity. Vaccine synthesis was performed using native chemical ligation. Due to the attachment of a highly lipophilic adjuvant, addition of 1% (w/v) sodium dodecyl sulfate was necessary to enhance peptide solubility in order to enable ligation. The vaccine was synthesized in three steps to yield a highly pure product (97.7% purity) with an excellent overall yield. Subcutaneous immunization of B10.BR (H-2(k)) mice with the synthesized vaccine, with or without the addition of complete Freund's adjuvant, elicited high serum IgG antibody titers against each of the incorporated peptide epitopes.
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Affiliation(s)
- Peter M Moyle
- School of Pharmacy, The University of Queensland, St. Lucia 4072, Queensland, Australia
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17
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Synthesis and Immunological Evaluation of M Protein Targeted Tetra-Valent and Tri-Valent Group A Streptococcal Vaccine Candidates Based on the Lipid-Core Peptide System. Int J Pept Res Ther 2006. [DOI: 10.1007/s10989-006-9021-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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White K, Kearns P, Toth I, Hook S. Increased adjuvant activity of minimal CD8 T cell peptides incorporated into lipid‐core‐peptides. Immunol Cell Biol 2004; 82:517-22. [PMID: 15479437 DOI: 10.1111/j.0818-9641.2004.01269.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A problem facing the use of subunit peptide and protein vaccines is their inability to stimulate protective immune responses. Many different approaches have been utilized to overcome this inefficient immune activation. The approach we have taken is to modify the vaccine antigen so that it now has adjuvant properties. To do this, multiple copies of minimal CD8 T cell epitopes were attached to a poly lysine lipid core. These constructs are known as lipid-core-peptides (LCP). The research presented here examines the adjuvant activity of LCP. Using mouse models, we were able to show that LCP were indeed able to activate antigen-presenting cells in vitro and to activate cytotoxic T-cell responses in vivo. More importantly, LCP were able to stimulate the development of a protective antitumour immune response.
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Affiliation(s)
- Karen White
- School of Pharmacy, University of Otago, Dunedin, New Zealand
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19
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Horváth A, Olive C, Karpati L, Sun HK, Good M, Toth I. Toward the development of a synthetic group a streptococcal vaccine of high purity and broad protective coverage. J Med Chem 2004; 47:4100-4. [PMID: 15267249 DOI: 10.1021/jm040041w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using native chemical ligation, we synthesized a group A streptococcal (GAS) vaccine that contained three different GAS M protein peptide epitopes in a chemically well-characterized construct in high purity. Two of the peptide epitopes represented variable amino terminal serotype determinants, and the third represented a carboxyl terminal conserved region determinant of the GAS M protein. We also synthesized a lipid core peptide (LCP) construct containing the same three peptides. Upon immunization of mice, the non-LCP construct only elicited antibody responses to all three epitopes with the use of adjuvant. The LCP construct, however, elicited excellent antibody responses to all three epitopes without the need for any additional adjuvant or carrier. We have synthesized the LCP synthetic vaccine system with good reproducibility.
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Affiliation(s)
- Anikó Horváth
- School of Pharmacy and School of Molecular and Microbial Sciences, The University of Queensland, Brisbane 4072, Australia
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20
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Development of lipid-core-peptide (LCP) based vaccines for the prevention of group A streptococcal (GAS) infection. Int J Pept Res Ther 2003. [DOI: 10.1007/s10989-004-2431-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Development of lipid-core-peptide (LCP) based vaccines for the prevention of group A streptococcal (GAS) infection. ACTA ACUST UNITED AC 2003. [DOI: 10.1007/bf02442594] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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