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Azuar A, Jin W, Mukaida S, Hussein WM, Toth I, Skwarczynski M. Recent Advances in the Development of Peptide Vaccines and Their Delivery Systems Against Group A Streptococcus. Vaccines (Basel) 2019; 7:E58. [PMID: 31266253 PMCID: PMC6789462 DOI: 10.3390/vaccines7030058] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/21/2019] [Accepted: 06/25/2019] [Indexed: 02/07/2023] Open
Abstract
Group A Streptococcus (GAS) infection can cause a variety of diseases in humans, ranging from common sore throats and skin infections, to more invasive diseases and life-threatening post-infectious diseases, such as rheumatic fever and rheumatic heart disease. Although research has been ongoing since 1923, vaccines against GAS are still not available to the public. Traditional approaches taken to develop vaccines for GAS failed due to poor efficacy and safety. Fortunately, headway has been made and modern subunit vaccines that administer minimal bacterial components provide an opportunity to finally overcome previous hurdles in GAS vaccine development. This review details the major antigens and strategies used for GAS vaccine development. The combination of antigen selection, peptide epitope modification and delivery systems have resulted in the discovery of promising peptide vaccines against GAS; these are currently in preclinical and clinical studies.
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Affiliation(s)
- Armira Azuar
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Wanli Jin
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Saori Mukaida
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Waleed M Hussein
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Helwan University, Helwan, Cairo 11795, Egypt
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
- School of Pharmacy, Woolloongabba, The University of Queensland, QLD 4072, Australia
- Institute of Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia.
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Chen M, Heimer P, Imhof D. Synthetic strategies for polypeptides and proteins by chemical ligation. Amino Acids 2015; 47:1283-99. [DOI: 10.1007/s00726-015-1982-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/02/2015] [Indexed: 11/30/2022]
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Cupri S, Graziano ACE, Cardile V, Skwarczynski M, Toth I, Pignatello R. A study on the encapsulation of an occludin lipophilic derivative in liposomal carriers. J Liposome Res 2015; 25:287-93. [PMID: 25586718 DOI: 10.3109/08982104.2014.992025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Many peptides and proteins, although potentially useful for the treatment of various diseases, are hindered in their clinical use by poor oral absorption and rapid enzymatic degradation. One of the available solutions to these problems is to increase the lipophilicity by conjugating the peptides to lipophilic moieties, making them more able to cross the biomembranes by passive transport. Occludin is a 65-kDa integral plasma-membrane protein located at the tight junctions. This protein and the peptide derived from it have potential clinical application for drug delivery. Peptide OP90-103 (1) is a fragment of occludin that shows a very poor oral bioavailability and is highly susceptible to enzymatic degradation. The conjugation of 1 with two lipoamino acid (LAA) moieties has been shown to enhance its lipophilicity and bioavailability, as well as its enzymatic stability. The purpose of this study was to evaluate the possibility of encapsulating fluorescein modified lipidated OP90-103 (2), in unilamellar- (LUV) and multilamellar liposomes (MLV), which have a different composition and surface charge and are produced by different methods. The cell internalization of the carrier systems was evaluated in vitro.
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Affiliation(s)
- Sarha Cupri
- a Section of Pharmaceutical Technology, Department of Drug Sciences , University of Catania , Catania , Italy
| | - Adriana C E Graziano
- b Section of Physiology, Department of Bio-medical Sciences , University of Catania , Catania , Italy
| | - Venera Cardile
- b Section of Physiology, Department of Bio-medical Sciences , University of Catania , Catania , Italy
| | - Mariusz Skwarczynski
- c School of Chemistry and Molecular Biosciences, The University of Queensland , Brisbane , Queensland , Australia , and
| | - Istvan Toth
- c School of Chemistry and Molecular Biosciences, The University of Queensland , Brisbane , Queensland , Australia , and.,d School of Pharmacy, The University of Queensland , Brisbane , Queensland , Australia
| | - Rosario Pignatello
- a Section of Pharmaceutical Technology, Department of Drug Sciences , University of Catania , Catania , Italy
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Azmi F, Ahmad Fuaad AAH, Giddam AK, Batzloff MR, Good MF, Skwarczynski M, Toth I. Self-adjuvanting vaccine against group A streptococcus: application of fibrillized peptide and immunostimulatory lipid as adjuvant. Bioorg Med Chem 2014; 22:6401-8. [PMID: 25438764 DOI: 10.1016/j.bmc.2014.09.042] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/16/2014] [Accepted: 09/20/2014] [Indexed: 01/08/2023]
Abstract
Peptides are of great interest to be used as vaccine antigens due to their safety, ease of manufacturing and specificity in generating immune response. There have been massive discoveries of peptide antigens over the past decade. However, peptides alone are poorly immunogenic, which demand co-administration with strong adjuvant to enhance their immunogenicity. Recently, fibril-forming peptides such as Q11 and lipoamino acid-based carrier have been identified to induce substantial immune responses when covalently linked to peptide epitope. In this study, we have incorporated either Q11 or lipoamino acids to a peptide epitope (J14) derived from M protein of group A streptococcus to develop self-adjuvanting vaccines. J14, Q11 and lipoamino acids were also conjugated together in a single vaccine construct in an attempt to evaluate the synergy effect of combining multiple adjuvants. Physicochemical characterization demonstrated that the vaccine constructs folded differently and self-assembled into nanoparticles. Significantly, only vaccine constructs containing double copies of lipoamino acids (regardless in conjugation with Q11 or not) were capable to induce significant dendritic cells uptake and subsequent J14-specific antibody responses in non-sizes dependent manners. Q11 had minimal impact in enhancing the immunogenicity of J14 even when it was used in combination with lipoamino acids. These findings highlight the impact of lipoamino acids moiety as a promising immunostimulant carrier and its number of attachment to peptide epitope was found to have a profound effect on the vaccine immunogenicity.
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Affiliation(s)
- Fazren Azmi
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, Queensland 4072, Australia; Faculty of Pharmacy, National University of Malaysia, Kuala Lumpur, Malaysia
| | - Abdullah Al Hadi Ahmad Fuaad
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, Queensland 4072, Australia
| | - Ashwini Kumar Giddam
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, Queensland 4072, Australia
| | - Michael R Batzloff
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Michael F Good
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, Queensland 4072, Australia
| | - Istvan Toth
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, Queensland 4072, Australia.
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Fagan V, Toth I, Simerska P. Convergent synthetic methodology for the construction of self-adjuvanting lipopeptide vaccines using a novel carbohydrate scaffold. Beilstein J Org Chem 2014; 10:1741-8. [PMID: 25161732 PMCID: PMC4143089 DOI: 10.3762/bjoc.10.181] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/03/2014] [Indexed: 12/30/2022] Open
Abstract
A novel convergent synthetic strategy for the construction of multicomponent self-adjuvanting lipopeptide vaccines was developed. A tetraalkyne-functionalized glucose derivative and lipidated Fmoc-lysine were prepared by novel efficient and convenient syntheses. The carbohydrate building block was coupled to the self-adjuvanting lipidic moiety (three lipidated Fmoc-lysines) on solid support. Four copies of a group A streptococcal B cell epitope (J8) were then conjugated to the glyco-lipopeptide using a copper-catalyzed cycloaddition reaction. The approach was elaborated by the preparation of a second vaccine candidate which incorporated an additional promiscuous T-helper epitope.
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Affiliation(s)
- Vincent Fagan
- The University of Queensland, School of Chemistry and Molecular Biosciences, Cooper Road, St. Lucia QLD 4072, Australia
| | - Istvan Toth
- The University of Queensland, School of Chemistry and Molecular Biosciences, Cooper Road, St. Lucia QLD 4072, Australia ; The University of Queensland, School of Pharmacy, Pharmacy Australia Centre of Excellence, Cornwall Street, Woolloongabba, QLD 4072, Australia
| | - Pavla Simerska
- The University of Queensland, School of Chemistry and Molecular Biosciences, Cooper Road, St. Lucia QLD 4072, Australia
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Huang ZH, Sun ZY, Gao Y, Chen PG, Liu YF, Chen YX, Li YM. Strategy for Designing a Synthetic Tumor Vaccine: Multi-Component, Multivalency and Antigen Modification. Vaccines (Basel) 2014; 2:549-62. [PMID: 26344745 PMCID: PMC4494217 DOI: 10.3390/vaccines2030549] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/30/2014] [Accepted: 06/04/2014] [Indexed: 12/29/2022] Open
Abstract
Synthetic tumor vaccines have been proven to be promising for cancer immunotherapy. However, the limitation of the specificity and efficiency of the synthetic tumor vaccines need further improvements. To overcome these difficulties, additional tumor-associated targets need to be identified, and optimized structural designs of vaccines need to be elaborated. In this review, we summarized the main strategies pursued in the design of synthetic tumor vaccines, such as multi-component, multivalency, antigen modification and other possible ways to improve the efficiency of synthetic tumor vaccines.
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Affiliation(s)
- Zhi-Hua Huang
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Zhan-Yi Sun
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Yue Gao
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Pu-Guang Chen
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Yan-Fang Liu
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Yong-Xiang Chen
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
| | - Yan-Mei Li
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China.
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Parhiz H, Shier WT, Ramezani M. From rationally designed polymeric and peptidic systems to sophisticated gene delivery nano-vectors. Int J Pharm 2013; 457:237-59. [PMID: 24060371 DOI: 10.1016/j.ijpharm.2013.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 08/21/2013] [Accepted: 09/17/2013] [Indexed: 12/12/2022]
Abstract
Lack of safe, efficient and controllable methods for delivering therapeutic genes appears to be the most important factor preventing human gene therapy. Safety issues encountered with viral vectors have prompted substantial attention to in vivo investigations with non-viral vectors throughout the past decade. However, developing non-viral vectors with effectiveness comparable to viral ones has been a challenge. The strategy of designing multifunctional synthetic carriers targeting several extracellular and intracellular barriers in the gene transfer pathway has emerged as a promising approach to improving the efficacy of gene delivery systems. This review will explain how sophisticated synthetic vectors can be created by combining conventional polycationic vectors such as polyethylenimine and basic amino acid peptides with additional polymers and peptides that are designed to overcome potential barriers to the gene delivery process.
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Affiliation(s)
- Hamideh Parhiz
- Pharmaceutical Research Center, Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, P.O. Box 91775-1365, Mashhad, Iran
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Zhao Y, Imura T, Leman LJ, Curtiss LK, Maryanoff BE, Ghadiri MR. Mimicry of high-density lipoprotein: functional peptide-lipid nanoparticles based on multivalent peptide constructs. J Am Chem Soc 2013; 135:13414-24. [PMID: 23978057 DOI: 10.1021/ja404714a] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We describe an approach for engineering peptide-lipid nanoparticles that function similarly to high-density lipoprotein (HDL). Branched, multivalent constructs, bearing multiple 23- or 16-amino-acid peptides, were designed, synthesized, and combined with phospholipids to produce nanometer-scale discoidal HDL-like particles. A variety of biophysical techniques were employed to characterize the constructs, including size exclusion chromatography, analytical ultracentrifuge sedimentation, circular dichroism, transmission electron microscopy, and fluorescence spectroscopy. The nanoparticles functioned in vitro (human and mouse plasma) and in vivo (mice) to rapidly remodel large native HDLs into small lipid-poor HDL particles, which are key acceptors of cholesterol in reverse cholesterol transport. Fluorescent labeling studies showed that the constituents of the nanoparticles readily distributed into native HDLs, such that the peptide constructs coexisted with apolipoprotein A-I (apoA-I), the main structural protein in HDLs. Importantly, nanolipid particles containing multivalent peptides promoted efficient cellular cholesterol efflux and were functionally superior to those derived from monomeric apoA-I mimetic peptides. The multivalent peptide-lipid nanoparticles were also remarkably stable toward enzymatic digestion in vitro and displayed long half-lives and desirable pharmacokinetic profiles in mice, providing a real practical advantage over previously studied linear or tandem helical peptides. Encouragingly, a two-week exploratory efficacy study in a widely used animal model for atherosclerosis research (LDLr-null mice) using nanoparticles constructed from a trimeric peptide demonstrated an exceptional 50% reduction in the plasma total cholesterol levels compared to the control group. Altogether, the studies reported here point to an attractive avenue for designing synthetic, HDL-like nanoparticles, with potential for treating atherosclerosis.
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Affiliation(s)
- Yannan Zhao
- Department of Chemistry, ‡Department of Immunology and Microbial Science, and §The Skaggs Institute for Chemical Biology, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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Chemical methods for peptide and protein production. Molecules 2013; 18:4373-88. [PMID: 23584057 PMCID: PMC6270108 DOI: 10.3390/molecules18044373] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 03/28/2013] [Accepted: 04/09/2013] [Indexed: 11/17/2022] Open
Abstract
Since the invention of solid phase synthetic methods by Merrifield in 1963, the number of research groups focusing on peptide synthesis has grown exponentially. However, the original step-by-step synthesis had limitations: the purity of the final product decreased with the number of coupling steps. After the development of Boc and Fmoc protecting groups, novel amino acid protecting groups and new techniques were introduced to provide high quality and quantity peptide products. Fragment condensation was a popular method for peptide production in the 1980s, but unfortunately the rate of racemization and reaction difficulties proved less than ideal. Kent and co-workers revolutionized peptide coupling by introducing the chemoselective reaction of unprotected peptides, called native chemical ligation. Subsequently, research has focused on the development of novel ligating techniques including the famous click reaction, ligation of peptide hydrazides, and the recently reported α-ketoacid-hydroxylamine ligations with 5-oxaproline. Several companies have been formed all over the world to prepare high quality Good Manufacturing Practice peptide products on a multi-kilogram scale. This review describes the advances in peptide chemistry including the variety of synthetic peptide methods currently available and the broad application of peptides in medicinal chemistry.
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Skwarczynski M, Kowapradit J, Ziora ZM, Toth I. pH-triggered peptide self-assembly into fibrils: a potential peptide-based subunit vaccine delivery platform. ACTA ACUST UNITED AC 2013. [DOI: 10.7243/2052-9341-1-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Skwarczynski M, Parhiz BH, Soltani F, Srinivasan S, Kamaruzaman KA, Lin IC, Toth I. Lipid Peptide Core Nanoparticles as Multivalent Vaccine Candidates against Streptococcus pyogenes. Aust J Chem 2012. [DOI: 10.1071/ch11292] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Traditional vaccine approaches for Group A streptococcus (GAS) infection are inadequate owing to the host’s production of cross-reactive antibodies that recognize not only the bacteria but also human tissue. To overcome this problem a peptide subunit-based vaccine was proposed, which would incorporate only minimal non-cross reactive epitopes. However, special delivery systems/adjuvants were required because short peptides are not immunogenic. In this study we have incorporated two epitopes from two different GAS proteins into a lipid core peptide (LCP) self-adjuvanting delivery system to achieve better protection against a wide range of GAS serotypes. Multivalent and monovalent constructs were synthesized with the help of an azide alkyne cycloaddition (click) reaction and their ability to self-assemble under aqueous conditions was examined. The compounds significantly differed in their ability to form small size nanoparticles, which are believed to be most appropriate for peptide-based subunit vaccine delivery. The LCP conjugates possessing two different epitopes, in contrast to monoepitopic constructs, formed small nanoparticles (5–15 nm) presumably owing to a suitable hydrophilic-hydrophobic balance of the molecules.
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Abstract
Disadvantages of classical vaccines, such as the risk of an autoimmune reaction, might be overcome by using a subunit vaccine containing the minimal microbial components necessary to stimulate appropriate immune responses. However, vaccines based on minimal epitopes suffer from poor immunogenicity and require the use of an additional immunostimulant (adjuvant). Only a few adjuvants have been permitted for use with vaccines intended for human administration. We have developed several vaccine candidates based on a lipid-core-peptide (LCP) system. This system has self-adjuvanting properties, and it can be used for the delivery of a variety of epitopes to produce vaccine candidates against a targeted disease. The LCP system is easily assembled by simple stepwise Boc solid-phase peptide synthesis.
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Peptide and glycopeptide dendrimers and analogous dendrimeric structures and their biomedical applications. Amino Acids 2010; 40:301-70. [DOI: 10.1007/s00726-010-0707-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 07/15/2010] [Indexed: 02/08/2023]
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