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Chowdhary R, Mubarak MM, Kantroo HA, Ur Rahim J, Malik A, Sarkar AR, Bashir G, Ahmad Z, Rai R. Synthesis, Characterization, and Antimicrobial Activity of Ultra-Short Cationic β-Peptides. ACS Infect Dis 2023; 9:1437-1448. [PMID: 37399583 DOI: 10.1021/acsinfecdis.3c00238] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
The development of new antibiotics is urgently required because of the rapidly growing resistance against conventional antibiotics. The antimicrobial peptides show potential as small antibiotic molecules. The stability of peptides is a primary concern for the use of peptides as drugs. Introducing β-amino acids into peptide sequences can be useful in preventing biological degradation by proteolytic enzymes. Herein, we describe the synthesis, characterization, and antimicrobial activity of ultra-short cationic β-peptides, LA-β3,3-Pip-β2,2-Ac6c-PEA, P1; LA-β3,3-Pip(G)-β2,2-Ac6c-PEA, P2; LAU-β3,3-Pip-β2,2-Ac6c-PEA, P3, and LAU-β3,3-Pip(G)-β2,2-Ac6c-PEA, P4. Peptides P1-P4 were evaluated against Gram-negative, Gram-positive, MRSA, and multi-drug resistant E. coli (MDR-E. coli). P3 exhibited the most potent antimicrobial activity against E. coli, S. epidermidis, S. aureus, K. pneumoniae, S. mutans, and E. faecalis, with MIC values 0.5, 2, 0.5, 1, 2, and 1 μg/mL, respectively. P3 exhibited time- and concentration-dependent bactericidal activities against E. coli, S. aureus, and E. faecalis with a killing rate of 1.6 logs/h. The treatment of E. coli with peptide P3 showed membrane disruption. In addition, P3 exhibited the inhibition of biofilm produced by E. coli, synergism with antibiotics (ciprofloxacin, streptomycin, and ampicillin), 100% cell viability against AML12, RAW 264.7, and HEK-293 cell lines at 1, and 10 μg/mL concentrations.
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Affiliation(s)
- Rubina Chowdhary
- Natural Products &Medicinal Chemistry Division, CSIR - Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mohamad Mosa Mubarak
- Clinical Microbiology PK/PD Division, CSIR - Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Hadiya A Kantroo
- Clinical Microbiology PK/PD Division, CSIR - Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India
| | - Junaid Ur Rahim
- Natural Products &Medicinal Chemistry Division, CSIR - Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Abbass Malik
- Clinical Microbiology PK/PD Division, CSIR - Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India
| | - Aminur Rahman Sarkar
- Natural Products &Medicinal Chemistry Division, CSIR - Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Gulnaz Bashir
- Department of Microbiology, Sher-I-Kashmir Institute of Medical Sciences, Srinagar 190011, India
| | - Zahoor Ahmad
- Clinical Microbiology PK/PD Division, CSIR - Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajkishor Rai
- Natural Products &Medicinal Chemistry Division, CSIR - Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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2
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Potential of cell-penetrating peptides (CPPs) in delivery of antiviral therapeutics and vaccines. Eur J Pharm Sci 2021; 169:106094. [PMID: 34896590 DOI: 10.1016/j.ejps.2021.106094] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/01/2021] [Accepted: 12/02/2021] [Indexed: 12/12/2022]
Abstract
Viral infections are a great threat to human health. Currently, there are no effective vaccines and antiviral drugs against the majority of viral diseases, suggesting the need to develop novel and effective antiviral agents. Since the intracellular delivery of antiviral agents, particularly the impermeable molecules, such as peptides, proteins, and nucleic acids, are essential to exert their therapeutic effects, using a delivery system is highly required. Among various delivery systems, cell-penetrating peptides (CPPs), a group of short peptides with the unique ability of crossing cell membrane, offer great potential for the intracellular delivery of various biologically active cargoes. The results of numerous in vitro and in vivo studies with CPP conjugates demonstrate their promise as therapeutic agents in various medical fields including antiviral therapy. The CPP-mediated delivery of various antiviral agents including peptides, proteins, nucleic acids, and nanocarriers have been associated with therapeutic efficacy both in vitro and in vivo. This review describes various aspects of viruses including their biology, pathogenesis, and therapy and briefly discusses the concept of CPP and its potential in drug delivery. Particularly, it will highlight a variety of CPP applications in the management of viral infections.
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Wątły J, Miller A, Kozłowski H, Rowińska-Żyrek M. Peptidomimetics - An infinite reservoir of metal binding motifs in metabolically stable and biologically active molecules. J Inorg Biochem 2021; 217:111386. [PMID: 33610030 DOI: 10.1016/j.jinorgbio.2021.111386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/14/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022]
Abstract
The involvement of metal ions in interactions with therapeutic peptides is inevitable. They are one of the factors able to fine-tune the biological properties of antimicrobial peptides, a promising group of drugs with one large drawback - a problematic metabolic stability. Appropriately chosen, proteolytically stable peptidomimetics seem to be a reasonable solution of the problem, and the use of D-, β-, γ-amino acids, unnatural amino acids, azapeptides, peptoids, cyclopeptides and dehydropeptides is an infinite reservoir of metal binding motifs in metabolically stable, well-designed, biologically active molecules. Below, their specific structural features, metal-chelating abilities and antimicrobial potential are discussed.
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Affiliation(s)
- Joanna Wątły
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland.
| | - Adriana Miller
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland
| | - Henryk Kozłowski
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland; Department of Health Sciences, University of Opole, Katowicka 68, Opole 45-060, Poland
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Ruzsics Z, Hoffmann K, Riedl A, Krawczyk A, Widera M, Sertznig H, Schipper L, Kapper-Falcone V, Debreczeny M, Ernst W, Grabherr R, Hengel H, Harant H. A Novel, Broad-Acting Peptide Inhibitor of Double-Stranded DNA Virus Gene Expression and Replication. Front Microbiol 2020; 11:601555. [PMID: 33281801 PMCID: PMC7705112 DOI: 10.3389/fmicb.2020.601555] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/27/2020] [Indexed: 12/30/2022] Open
Abstract
Viral infections are a global disease burden with only a limited number of antiviral agents available. Due to newly emerging viral pathogens and increasing occurrence of drug resistance, there is a continuous need for additional therapeutic options, preferably with extended target range. In the present study, we describe a novel antiviral peptide with broad activity against several double-stranded DNA viruses. The 22-mer peptide TAT-I24 potently neutralized viruses such as herpes simplex viruses, adenovirus type 5, cytomegalovirus, vaccinia virus, and simian virus 40 in cell culture models, while being less active against RNA viruses. The peptide TAT-I24 therefore represents a novel and promising drug candidate for use against double-stranded DNA viruses.
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Affiliation(s)
- Zsolt Ruzsics
- Institute of Virology, Medical Center-University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,German Consulting Laboratory for HSV and VZV, Medical Center-University of Freiburg, Freiburg, Germany
| | - Katja Hoffmann
- Institute of Virology, Medical Center-University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - André Riedl
- Institute of Virology, Medical Center-University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Adalbert Krawczyk
- Department of Infectious Diseases, West German Centre of Infectious Diseases, Universitätsmedizin Essen, University Duisburg-Essen, Essen, Germany.,Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Marek Widera
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Institute of Medical Virology, University Hospital Frankfurt, Goethe University Frankfurt, Frankfurt, Germany
| | - Helene Sertznig
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Leonie Schipper
- Institute for Virology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Valeria Kapper-Falcone
- Institute of Virology, Medical Center-University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,German Consulting Laboratory for HSV and VZV, Medical Center-University of Freiburg, Freiburg, Germany
| | - Monika Debreczeny
- VIBT Imaging Center, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Wolfgang Ernst
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Reingard Grabherr
- Department of Biotechnology, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Hartmut Hengel
- Institute of Virology, Medical Center-University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany.,German Consulting Laboratory for HSV and VZV, Medical Center-University of Freiburg, Freiburg, Germany
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5
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Gomes B, Augusto MT, Felício MR, Hollmann A, Franco OL, Gonçalves S, Santos NC. Designing improved active peptides for therapeutic approaches against infectious diseases. Biotechnol Adv 2018; 36:415-429. [PMID: 29330093 DOI: 10.1016/j.biotechadv.2018.01.004] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 12/13/2017] [Accepted: 01/06/2018] [Indexed: 12/25/2022]
Abstract
Infectious diseases are one of the main causes of human morbidity and mortality. In the last few decades, pathogenic microorganisms' resistance to conventional drugs has been increasing, and it is now pinpointed as a major worldwide health concern. The need to search for new therapeutic options, as well as improved treatment outcomes, has therefore increased significantly, with biologically active peptides representing a new alternative. A substantial research effort is being dedicated towards their development, especially due to improved biocompatibility and target selectivity. However, the inherent limitations of peptide drugs are restricting their application. In this review, we summarize the current status of peptide drug development, focusing on antiviral and antimicrobial peptide activities, highlighting the design improvements needed, and those already being used, to overcome the drawbacks of the therapeutic application of biologically active peptides.
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Affiliation(s)
- Bárbara Gomes
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Marcelo T Augusto
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Mário R Felício
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Axel Hollmann
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal; Laboratory of Molecular Microbiology, Institute of Basic and Applied Microbiology, National University of Quilmes, Bernal, Buenos Aires, Argentina; Laboratory of Biointerfaces and Biomimetic Systems, CITSE, National University of Santiago del Estero-CONICET, Santiago del Estero, Argentina
| | - Octávio L Franco
- Centro de Análises Proteômicas e Bioquímicas, Pós-graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, DF, Brazil; Programa de Pós-Graduação em Patologia Molecular, Universidade de Brasília, Brasília, DF, Brazil; S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil
| | - Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Nuno C Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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Purkayastha N, Capone S, Beck AK, Seebach D, Leeds J, Thompson K, Moser HE. Antibacterial Activity of Enrofloxacin and Ciprofloxacin Derivatives ofβ-Octaarginine. Chem Biodivers 2015; 12:179-93. [DOI: 10.1002/cbdv.201400456] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Indexed: 11/09/2022]
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Cabrele C, Martinek TA, Reiser O, Berlicki Ł. Peptides Containing β-Amino Acid Patterns: Challenges and Successes in Medicinal Chemistry. J Med Chem 2014; 57:9718-39. [DOI: 10.1021/jm5010896] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chiara Cabrele
- Department
of Molecular Biology, University of Salzburg, Billrothstrasse 11, 5020 Salzburg, Austria
| | - Tamás A. Martinek
- SZTE-MTA
Lendulet Foldamer Research Group, Institute of Pharmaceutical Analysis, University of Szeged, Somogyi u. 6., H-6720 Szeged, Hungary
| | - Oliver Reiser
- Institute
of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
| | - Łukasz Berlicki
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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8
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Bandala Y, Reyes-Rangel G, Obregón-Zúñiga A, Cruz-Hernández C, Corzo G, Juaristi E. trans-Hexahydrobenzoxazolidinones in the Enantioselective Synthesis of β2-Amino Acids Containing Proteinogenic Side Chains. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Hong W, Li T, Song Y, Zhang R, Zeng Z, Han S, Zhang X, Wu Y, Li W, Cao Z. Inhibitory activity and mechanism of two scorpion venom peptides against herpes simplex virus type 1. Antiviral Res 2013; 102:1-10. [PMID: 24315793 PMCID: PMC7113736 DOI: 10.1016/j.antiviral.2013.11.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/12/2013] [Accepted: 11/27/2013] [Indexed: 02/08/2023]
Abstract
Hp1036 and Hp1239 are two new cationic host defense peptides from scorpion venom. They inhibitory effect on multiple steps of HSV-1 life cycle. They adopted α-helix structure in approximate membrane environment. They are virucidal of HSV-1 and destroyed the morphology of HSV-1. They easily entered Vero cells and reduced the intracellular viral infectivity.
Herpes simplex virus type 1 (HSV-1) is a widespread human pathogen that causes severe diseases, but there are not effective and safe drugs in clinical therapy besides acyclovir (ACV) and related nucleoside analogs. In this study, two new venom peptides from the scorpion Heterometrus petersii were identified with effective inhibitory effect on HSV-1 infection in vitro. Both Hp1036 and Hp1239 peptides exhibited potent virucidal activities against HSV-1 (EC50 = 0.43 ± 0.09 and 0.41 ± 0.06 μM, respectively) and effective inhibitory effects when added at the viral attachment (EC50 = 2.87 ± 0.16 and 5.73 ± 0.61 μM, respectively), entry (EC50 = 4.29 ± 0.35 and 4.32 ± 0.47 μM, respectively) and postentry (EC50 = 7.86 ± 0.80 and 8.41 ± 0.73 μM, respectively) steps. Both Hp1036 and Hp1239 peptides adopted α-helix structure in approximate membrane environment and resulted in the destruction of the viral morphology. Moreover, Hp1036 and Hp1239 peptides entered Vero cells and reduced the intracellular viral infectivity. Taken together, Hp1036 and Hp1239 peptides are two anti-viral peptides with effective inhibitory effect on multiple steps of HSV-1 life cycle and therefore are good candidate for development as virucides.
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Affiliation(s)
- Wei Hong
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Tian Li
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Yu Song
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Runhong Zhang
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Zhengyang Zeng
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Shisong Han
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Xianzheng Zhang
- Key Laboratory of Biomedical Polymers of Ministry of Education and Department of Chemistry, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Yingliang Wu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Wenxin Li
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Zhijian Cao
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei 430072, PR China.
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10
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Purkayastha N, Eyer K, Robinson T, Dittrich PS, Beck AK, Seebach D, Kolesinska B, Cadalbert R. Enantiomeric and Diastereoisomeric (Mixed)L/ D-Octaarginine Derivatives - A Simple Way of Modulating the Properties of Cell-Penetrating Peptides. Chem Biodivers 2013; 10:1165-84. [DOI: 10.1002/cbdv.201300180] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Indexed: 12/12/2022]
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11
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Heck T, Geueke B, Kohler HPE. Bacterialβ-Aminopeptidases: Structural Insights and Applications for Biocatalysis. Chem Biodivers 2012; 9:2388-409. [DOI: 10.1002/cbdv.201200305] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Indexed: 12/12/2022]
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12
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Jiang Y, Yang D, Li W, Wang B, Jiang Z, Li M. Antiviral activity of recombinant mouse β-defensin 3 against influenza A virus in vitro and in vivo. Antivir Chem Chemother 2012; 22:255-62. [PMID: 22345365 DOI: 10.3851/imp2077] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2011] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Influenza causes significant morbidity and mortality. Mammalian β-defensins are small peptides of about 4.5-6 kDa in mass and are effectors of the innate immune response with potent antimicrobial activity. In this paper, we focused on the anti-influenza A activity of the recombinant mouse β-defensin 3 (rMBD-3) in vivo and in vitro. METHODS The rMBD-3 peptide was added to Madin-Darby canine kidney (MDCK) cells at different stages of influenza A virus (IAV) A/PR/8/34 (H1N1) infection and its virus inhibitory properties were determined. Mice were infected with IAV and treated with rMBD-3 peptide from 12 h post-infection. The effect of rMBD-3 peptide was determined by pulmonary viral load, pathology and mortality. In addition, the expression of interleukin (IL)-12, interferon (IFN)-γ and tumour necrosis factor (TNF)-α genes in mice with or without rMBD-3 treatment was determined by semi-quantitative reverse transcriptase PCR. RESULTS rMBD-3 was shown to protect MDCK cells against IAV infection and had a major role in inhibition of adsorption and uptake by cells infected with IAV. Following the addition of 100 μg/ml rMBD-3 to MDCK cells medium, approximately 80% of cells were protected from infection in vitro. rMBD-3 given by tail vein injection (10 mg/kg/day) was the most effective method to improve the survival rate of the mice. Treatment with rMBD-3 was found to up-regulate IFN-γ and IL-12 gene expression, but reduced expression of the TNF-α gene. CONCLUSIONS These results demonstrate that rMBD-3 possesses anti-influenza virus activity both in vivo and in vitro that might be of therapeutic use.
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Affiliation(s)
- Yan Jiang
- Department of Microbiology, Guiyang Medical College, Guiyang, China
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13
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Diastereoselective synthesis of highly functionalized β2,2,3-substituted amino acids from 4-substituted-1,3-oxazinan-6-ones. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Affiliation(s)
- W Seth Horne
- University of Pittsburgh, Department of Chemistry,
219 Parkman Ave., Pittsburgh, PA 15260, USA
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15
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Miller EH, Harrison JS, Radoshitzky SR, Higgins CD, Chi X, Dong L, Kuhn JH, Bavari S, Lai JR, Chandran K. Inhibition of Ebola virus entry by a C-peptide targeted to endosomes. J Biol Chem 2011; 286:15854-61. [PMID: 21454542 PMCID: PMC3091195 DOI: 10.1074/jbc.m110.207084] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Ebola virus (EboV) and Marburg virus (MarV) (filoviruses) are the causative agents of severe hemorrhagic fever. Infection begins with uptake of particles into cellular endosomes, where the viral envelope glycoprotein (GP) catalyzes fusion between the viral and host cell membranes. This fusion event is thought to involve conformational rearrangements of the transmembrane subunit (GP2) of the envelope spike that ultimately result in formation of a six-helix bundle by the N- and C-terminal heptad repeat (NHR and CHR, respectively) regions of GP2. Infection by other viruses employing similar viral entry mechanisms (such as HIV-1 and severe acute respiratory syndrome coronavirus) can be inhibited with synthetic peptides corresponding to the native CHR sequence ("C-peptides"). However, previously reported EboV C-peptides have shown weak or insignificant antiviral activity. To determine whether the activity of a C-peptide could be improved by increasing its intracellular concentration, we prepared an EboV C-peptide conjugated to the arginine-rich sequence from HIV-1 Tat, which is known to accumulate in endosomes. We found that this peptide specifically inhibited viral entry mediated by filovirus GP proteins and infection by authentic filoviruses. We determined that antiviral activity was dependent on both the Tat sequence and the native EboV CHR sequence. Mechanistic studies suggested that the peptide acts by blocking a membrane fusion intermediate.
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Affiliation(s)
- Emily Happy Miller
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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16
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Hydrolyzable tannins (chebulagic acid and punicalagin) target viral glycoprotein-glycosaminoglycan interactions to inhibit herpes simplex virus 1 entry and cell-to-cell spread. J Virol 2011; 85:4386-98. [PMID: 21307190 DOI: 10.1128/jvi.01492-10] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) is a common human pathogen that causes lifelong latent infection of sensory neurons. Non-nucleoside inhibitors that can limit HSV-1 recurrence are particularly useful in treating immunocompromised individuals or cases of emerging acyclovir-resistant strains of herpesvirus. We report that chebulagic acid (CHLA) and punicalagin (PUG), two hydrolyzable tannins isolated from the dried fruits of Terminalia chebula Retz. (Combretaceae), inhibit HSV-1 entry at noncytotoxic doses in A549 human lung cells. Experiments revealed that both tannins targeted and inactivated HSV-1 viral particles and could prevent binding, penetration, and cell-to-cell spread, as well as secondary infection. The antiviral effect from either of the tannins was not associated with induction of type I interferon-mediated responses, nor was pretreatment of the host cell protective against HSV-1. Their inhibitory activities targeted HSV-1 glycoproteins since both natural compounds were able to block polykaryocyte formation mediated by expression of recombinant viral glycoproteins involved in attachment and membrane fusion. Our results indicated that CHLA and PUG blocked interactions between cell surface glycosaminoglycans and HSV-1 glycoproteins. Furthermore, the antiviral activities from the two tannins were significantly diminished in mutant cell lines unable to produce heparan sulfate and chondroitin sulfate and could be rescued upon reconstitution of heparan sulfate biosynthesis. We suggest that the hydrolyzable tannins CHLA and PUG may be useful as competitors for glycosaminoglycans in the management of HSV-1 infections and that they may help reduce the risk for development of viral drug resistance during therapy with nucleoside analogues.
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17
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Rincón V, Bocanegra R, Rodríguez-Huete A, Rivas G, Mateu MG. Effects of macromolecular crowding on the inhibition of virus assembly and virus-cell receptor recognition. Biophys J 2011; 100:738-746. [PMID: 21281589 PMCID: PMC3030154 DOI: 10.1016/j.bpj.2010.12.3714] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/22/2010] [Accepted: 12/15/2010] [Indexed: 10/18/2022] Open
Abstract
Biological fluids contain a very high total concentration of macromolecules that leads to volume exclusion by one molecule to another. Theory and experiment have shown that this condition, termed macromolecular crowding, can have significant effects on molecular recognition. However, the influence of molecular crowding on recognition events involving virus particles, and their inhibition by antiviral compounds, is virtually unexplored. Among these processes, capsid self-assembly during viral morphogenesis and capsid-cell receptor recognition during virus entry into cells are receiving increasing attention as targets for the development of new antiviral drugs. In this study, we have analyzed the effect of macromolecular crowding on the inhibition of these two processes by peptides. Macromolecular crowding led to a significant reduction in the inhibitory activity of: 1), a capsid-binding peptide and a small capsid protein domain that interfere with assembly of the human immunodeficiency virus capsid, and 2), a RGD-containing peptide able to block the interaction between foot-and-mouth disease virus and receptor molecules on the host cell membrane (in this case, the effect was dependent on the conditions used). The results, discussed in the light of macromolecular crowding theory, are relevant for a quantitative understanding of molecular recognition processes during virus infection and its inhibition.
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Affiliation(s)
- Verónica Rincón
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Universidad Autónoma de Madrid, Madrid, Spain
| | - Rebeca Bocanegra
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Universidad Autónoma de Madrid, Madrid, Spain
| | - Alicia Rodríguez-Huete
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Universidad Autónoma de Madrid, Madrid, Spain
| | - Germán Rivas
- Centro de Investigaciones Biológicas (Consejo Superior de Investigaciones Científicas), Madrid, Spain
| | - Mauricio G Mateu
- Centro de Biología Molecular "Severo Ochoa" (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Universidad Autónoma de Madrid, Madrid, Spain.
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Saludes JP, Ames JB, Gervay-Hague J. Synthesis and structural characterization of sialic acid-glutamic acid hybrid foldamers as conformational surrogates of alpha-2,8-linked polysialic acid. J Am Chem Soc 2010; 131:5495-505. [PMID: 19323529 DOI: 10.1021/ja808286x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Surface expression of alpha-(2,8)-linked polymers of sialic acid in adult tissues has been correlated with metastasis of several human cancers. One approach to chemotherapeutic intervention against the spread of these cancers involves the development of immunogenic molecules that elicit an antibody response against alpha-(2,8)-linked polysialic acids. Naturally occurring polysialic acids are not viable candidates because they are present during embryonic development and are recognized as self by the immune system. These natural polymers also have poor pharmacokinetic properties because they are readily degraded by neuraminidase enzymes. We have been interested in developing structural surrogates of polysialic acids in an effort to overcome these limitations. Reported herein are microwave-assisted solid-phase peptide syntheses and structural characterization studies of a series of alpha/delta hybrid peptides derived from Fmoc-Neu2en and Fmoc-Glu(OtBu)-OH. Conformational experiments including circular dichroism, NH/ND exchange, and ROESY in aqueous solution were performed to study the secondary structures of these hybrid foldamers. ROESY data were analyzed with the assistance of XPLOR-NIH that was modified to include parameter and topology files to accommodate unnatural amino acids and the delta amide linkages. The results indicate that stable secondary structure is dependent upon both the amino acid sequence and the configuration of Glu. The most stable foldamer was composed of a total of 6 residues beginning with L-Glu at the carboxy terminus and alternating Neu2en and L-Glu residues. In water, this foldamer adopts a right-handed helical conformation with 3.7 residues per turn, 7.4 A pitch, 5.8 A diameter, and a length of 18.5 A, which is stabilized by both classical C=O...H-N backbone interactions and by pyranose ring O and L-Glu HN H-bonding. These structural features orient the L-Glu carboxylates along the helical backbone with a periodicity that matches the carboxylate positions along the reported G2(+) left-handed helix of alpha-(2,8)-polysialic acid. However, the charge density of the foldamer is one-half that of the natural polymer. These findings provide a fundamental understanding of the factors that influence stable secondary structure in hybrid Neu2en/Glu systems, and the tools we have developed establish a viable platform for the rational design of alpha-(2,8)-polysialic acid surrogates.
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Affiliation(s)
- Jonel P Saludes
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA
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Vasudev PG, Chatterjee S, Shamala N, Balaram P. Structural Chemistry of Peptides Containing Backbone Expanded Amino Acid Residues: Conformational Features of β, γ, and Hybrid Peptides. Chem Rev 2010; 111:657-87. [DOI: 10.1021/cr100100x] [Citation(s) in RCA: 273] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Prema. G. Vasudev
- Department of Physics and Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Sunanda Chatterjee
- Department of Physics and Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Narayanaswamy Shamala
- Department of Physics and Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Padmanabhan Balaram
- Department of Physics and Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
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20
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Heck T, Reimer A, Seebach D, Gardiner J, Deniau G, Lukaszuk A, Kohler HPE, Geueke B. β-Aminopeptidase-Catalyzed Biotransformations of β2-Dipeptides: Kinetic Resolution and Enzymatic Coupling. Chembiochem 2010; 11:1129-36. [DOI: 10.1002/cbic.200900757] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Ross NT, Katt WP, Hamilton AD. Synthetic mimetics of protein secondary structure domains. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2010; 368:989-1008. [PMID: 20123744 PMCID: PMC3263801 DOI: 10.1098/rsta.2009.0210] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Proteins modulate the majority of all biological functions and are primarily composed of highly organized secondary structural elements such as helices, turns and sheets. Many of these functions are affected by a small number of key protein-protein contacts, often involving one or more of these well-defined structural elements. Given the ubiquitous nature of these protein recognition domains, their mimicry by peptidic and non-peptidic scaffolds has become a major focus of contemporary research. This review examines several key advances in secondary structure mimicry over the past several years, particularly focusing upon scaffolds that show not only promising projection of functional groups, but also a proven effect in biological systems.
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Muller WJ, Jones CA, Koelle DM. Immunobiology of herpes simplex virus and cytomegalovirus infections of the fetus and newborn. ACTA ACUST UNITED AC 2010; 6:38-55. [PMID: 20467462 DOI: 10.2174/157339510790231833] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Immunologic "immaturity" is often blamed for the increased susceptibility of newborn humans to infection, but the precise mechanisms and details of immunologic development remain somewhat obscure. Herpes simplex virus (HSV) and cytomegalovirus (CMV) are two of the more common severe infectious agents of the fetal and newborn periods. HSV infection in the newborn most commonly occurs after exposure to the virus during delivery, and can lead to a spectrum of clinical disease ranging from isolated skin-eye-mucous membrane infection to severe disseminated multiorgan disease, often including encephalitis. In contrast to HSV, clinically severe CMV infections early in life are usually acquired during the intrauterine period. These infections can result in a range of clinical disease, including hearing loss and neurodevelopmental delay. However, term newborns infected with CMV after delivery are generally asymptomatic, and older children and adults often acquire infection with HSV or CMV with either no or mild clinical symptoms. The reasons for these widely variable clinical presentations are not completely understood, but likely relate to developmental differences in immune responses.This review summarizes recent human and animal studies of the immunologic response of the fetus and newborn to these two infections, in comparison to the responses of older children and adults. The immunologic defense of the newborn against each virus is considered under the broader categories of (i) the placental barrier to infection, (ii) skin and mucosal barriers (including antimicrobial peptides), (iii) innate responses, (iv) humoral responses, and (v) cellular responses. A specific focus is made on recent studies of innate and cellular immunity to HSV and CMV.
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Affiliation(s)
- William J Muller
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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23
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Bergman YE, Del Borgo MP, Gopalan RD, Jalal S, Unabia SE, Ciampini M, Clayton DJ, Fletcher JM, Mulder RJ, Wilce JA, Aguilar MI, Perlmutter P. Synthesis of stapled beta3-peptides through ring-closing metathesis. Org Lett 2009; 11:4438-40. [PMID: 19719157 DOI: 10.1021/ol901803d] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The first synthesis of carbon-stapled beta(3)-peptides is reported. The precursor beta(3)-peptides, with O-allyl beta-serines located in an i/i+3 relationship, were prepared on solid phase. We show that efficient ring-closing metathesis (RCM) of these new beta(3)-peptides proceeds smoothly either in solution or on an appropriate solid support. All products were generated with high selectivity for the E-isomer.
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Affiliation(s)
- Ylva E Bergman
- School of Chemistry, Monash University, Clayton 3800 Victoria, Australia
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24
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Sleebs BE, Van Nguyen TT, Hughes AB. Recent Advances in Stereoselective Synthesis and Application of β-Amino Acids. ORG PREP PROCED INT 2009. [DOI: 10.1080/00304940903376028] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Brad E. Sleebs
- a Department of Chemistry , La Trobe University , Victoria, 3086, Australia
- b The Walter and Elisa Hall Institute of Medical Research Parkville , Victoria, 3052, Australia
| | - T. T. Van Nguyen
- a Department of Chemistry , La Trobe University , Victoria, 3086, Australia
- b The Walter and Elisa Hall Institute of Medical Research Parkville , Victoria, 3052, Australia
| | - Andrew B. Hughes
- a Department of Chemistry , La Trobe University , Victoria, 3086, Australia
- b The Walter and Elisa Hall Institute of Medical Research Parkville , Victoria, 3052, Australia
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25
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An efficient synthetic approach towards trans-β2,3-amino acids and demonstration of their utility in the design of therapeutically important β2,3-peptides and α,β2,3-peptide aldehydes. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.072] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Zhang J, Kissounko DA, Lee SE, Gellman SH, Stahl SS. Access to poly-beta-peptides with functionalized side chains and end groups via controlled ring-opening polymerization of beta-lactams. J Am Chem Soc 2009; 131:1589-97. [PMID: 19125651 DOI: 10.1021/ja8069192] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Poly-beta-peptides are attractive for biomedical applications because the backbone is similar enough to that of proteins for biocompatibility, but the backbone is sufficiently unnatural that these polymers evade proteolytic degradation. Prior investigations of poly-beta-peptides have been hindered by two principal limitations: (1) most known examples are insoluble, and (2) the range of accessible side chain functionality has been quite limited (mostly simple hydrocarbon units). The present study describes innovations in poly-beta-peptide synthesis that enable the preparation of diversely functionalized examples and provide the basis for broad exploration of the properties and applications of these nylon-3 materials. We describe several beta-lactams with a protected amino group in their side chain that readily undergo ring-opening polymerization (ROP). These monomers are available in large quantities via N-chlorosulfonylisocyanate (CSI) cycloaddition reactions with functionalized alkenes; previously CSI reactions have been limited to alkenes with hydrocarbon substituents. Postpolymerization deprotection of the amino groups leads to water-soluble poly-beta-peptides. In addition, we introduce a simple co-initiation strategy that allows placement of a wide variety of functional groups at the N-termini of poly-beta-peptide chains. ROP involving the new beta-lactams and co-initiation strategy exhibits characteristics of a controlled polymerization and enables the preparation of amphiphilic block copolymers. We have recently shown that cationic copoly-beta-peptides made available by these innovations mimic the selective antibacterial activity of host-defense peptides; the results described here provide the foundation for further exploration of this valuable activity and for the pursuit of other biological applications such as DNA/siRNA delivery and tissue engineering.
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Affiliation(s)
- Jihua Zhang
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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