1
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Duarte CA, Cabrales A, Echevarría R, Paneque T, Ramírez AC, Casillas D, Sobrino-Iglesias X, Garay H, Besada V, Fernández-Ortega C. Stability in human serum and plasma of the HIV peptide drug candidate CIGB-210 and improved variants. Biotechnol Appl Biochem 2024. [PMID: 39219226 DOI: 10.1002/bab.2655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 08/05/2024] [Indexed: 09/04/2024]
Abstract
The peptide CIGB-210 inhibits HIV replication, inducing a rearrangement of vimentin intermediate filaments. The assessment of the in vitro serum and plasma stability of this peptide is important to develop an optimal pharmacological formulation. A half-life of 17.68 ± 0.59 min was calculated for CIGB-210 in human serum by reverse-phase high-performance liquid chromatography (HPLC) and mass spectrometry (MS). Eight metabolites of CIGB-210 were identified with this methodology, all of them lacking the N-terminal moiety. A previously developed CIGB-210 in-house competitive ELISA was used to compare the stability of CIGB-210 derivatives containing either D-amino acids, acetylation at the N-terminus, or both modifications. The half-life of CIGB-210 in serum was five times higher when measured by ELISA than by HPLC/MS, and twice higher in plasma as compared to serum. The substitution of D-asparagine on position 6 doubled the half-life, while D-amino acids on positions 8 and 9 did not improve the stability. The acetylation of the N-terminus resulted in a 24-fold more stable peptide in plasma. The positive effect of N-terminal acetylation on CIGB-210 serum stability was confirmed by the HPLC/MS method, as the half-life of the peptide was not reached after 2 h of incubation, which represents more than a 6.8-fold increase in the half-life with respect to the original peptide.
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Affiliation(s)
- Carlos A Duarte
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Ania Cabrales
- Departamento de Química-Física, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Reina Echevarría
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Taimí Paneque
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Anna C Ramírez
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Dionne Casillas
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Xeila Sobrino-Iglesias
- Departamento de Química-Física, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Hilda Garay
- Departamento de Química-Física, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Vladimir Besada
- Departamento de Química-Física, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
| | - Celia Fernández-Ortega
- Departamento de Farmacéuticos, Centro de Ingeniería Genética y Biotecnología, La Habana, Cuba
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2
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Rozans S, Moghaddam AS, Wu Y, Atanasoff K, Nino L, Dunne K, Pashuck ET. Quantifying and Controlling the Proteolytic Degradation of Cell Adhesion Peptides. ACS Biomater Sci Eng 2024; 10:4916-4926. [PMID: 38968389 PMCID: PMC11322908 DOI: 10.1021/acsbiomaterials.4c00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/10/2024] [Accepted: 06/18/2024] [Indexed: 07/07/2024]
Abstract
Peptides are widely used within biomaterials to improve cell adhesion, incorporate bioactive ligands, and enable cell-mediated degradation of the matrix. While many of the peptides incorporated into biomaterials are intended to be present throughout the life of the material, their stability is not typically quantified during culture. In this work, we designed a series of peptide libraries containing four different N-terminal peptide functionalizations and three C-terminal functionalizations to better understand how simple modifications can be used to reduce the nonspecific degradation of peptides. We tested these libraries with three cell types commonly used in biomaterials research, including mesenchymal stem/stromal cells (hMSCs), endothelial cells, and macrophages, and quantified how these cell types nonspecifically degraded peptides as a function of terminal amino acid and chemistry. We found that peptides in solution which contained N-terminal amines were almost entirely degraded by 48 h, irrespective of the terminal amino acid, and that degradation occurred even at high peptide concentrations. Peptides with C-terminal carboxylic acids also had significant degradation when cultured with the cells. We found that simple modifications to the termini could significantly reduce or completely abolish nonspecific degradation when soluble peptides were added to cells cultured on tissue culture plastic or within hydrogel matrices, and that functionalizations which mimicked peptide conjugations to hydrogel matrices significantly slowed nonspecific degradation. We also found that there were minimal differences in peptide degradation across cell donors and that sequences mimicking different peptides commonly used to functionalize biomaterials all had significant nonspecific degradation. Finally, we saw that there was a positive trend between RGD stability and hMSC spreading within hydrogels, indicating that improving the stability of peptides within biomaterial matrices may improve the performance of engineered matrices.
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Affiliation(s)
- Samuel
J. Rozans
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - Abolfazl Salehi Moghaddam
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - Yingjie Wu
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - Kayleigh Atanasoff
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - Liliana Nino
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - Katelyn Dunne
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
| | - E. Thomas Pashuck
- Department of Bioengineering, Lehigh University, 7
Asa Drive, Suite 205, Bethlehem, PA 18015, United States
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3
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Wan F, Torres MDT, Peng J, de la Fuente-Nunez C. Deep-learning-enabled antibiotic discovery through molecular de-extinction. Nat Biomed Eng 2024; 8:854-871. [PMID: 38862735 PMCID: PMC11310081 DOI: 10.1038/s41551-024-01201-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 03/25/2024] [Indexed: 06/13/2024]
Abstract
Molecular de-extinction aims at resurrecting molecules to solve antibiotic resistance and other present-day biological and biomedical problems. Here we show that deep learning can be used to mine the proteomes of all available extinct organisms for the discovery of antibiotic peptides. We trained ensembles of deep-learning models consisting of a peptide-sequence encoder coupled with neural networks for the prediction of antimicrobial activity and used it to mine 10,311,899 peptides. The models predicted 37,176 sequences with broad-spectrum antimicrobial activity, 11,035 of which were not found in extant organisms. We synthesized 69 peptides and experimentally confirmed their activity against bacterial pathogens. Most peptides killed bacteria by depolarizing their cytoplasmic membrane, contrary to known antimicrobial peptides, which tend to target the outer membrane. Notably, lead compounds (including mammuthusin-2 from the woolly mammoth, elephasin-2 from the straight-tusked elephant, hydrodamin-1 from the ancient sea cow, mylodonin-2 from the giant sloth and megalocerin-1 from the extinct giant elk) showed anti-infective activity in mice with skin abscess or thigh infections. Molecular de-extinction aided by deep learning may accelerate the discovery of therapeutic molecules.
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Affiliation(s)
- Fangping Wan
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA
- Department of Chemistry, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, USA
| | - Marcelo D T Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA
- Department of Chemistry, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, USA
| | - Jacqueline Peng
- Graduate Group in Genomics and Computational Biology, University of Pennsylvania, Philadelphia, PA, USA
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, USA.
- Department of Chemistry, School of Arts and Sciences, University of Pennsylvania, Philadelphia, PA, USA.
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, USA.
- Graduate Group in Genomics and Computational Biology, University of Pennsylvania, Philadelphia, PA, USA.
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4
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Amiri A, Abedanzadeh S, Davaeil B, Shaabani A, Moosavi-Movahedi AA. Protein click chemistry and its potential for medical applications. Q Rev Biophys 2024; 57:e6. [PMID: 38619322 DOI: 10.1017/s0033583524000027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
A revolution in chemical biology occurred with the introduction of click chemistry. Click chemistry plays an important role in protein chemistry modifications, providing specific, sensitive, rapid, and easy-to-handle methods. Under physiological conditions, click chemistry often overlaps with bioorthogonal chemistry, defined as reactions that occur rapidly and selectively without interfering with biological processes. Click chemistry is used for the posttranslational modification of proteins based on covalent bond formations. With the contribution of click reactions, selective modification of proteins would be developed, representing an alternative to other technologies in preparing new proteins or enzymes for studying specific protein functions in different biological processes. Click-modified proteins have potential in diverse applications such as imaging, labeling, sensing, drug design, and enzyme technology. Due to the promising role of proteins in disease diagnosis and therapy, this review aims to highlight the growing applications of click strategies in protein chemistry over the last two decades, with a special emphasis on medicinal applications.
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Affiliation(s)
- Ahmad Amiri
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | | | - Bagher Davaeil
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Ahmad Shaabani
- Department of Chemistry, Shahid Beheshti University, Tehran, Iran
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5
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Lee MF, Anasir MI, Poh CL. Serum Stabilities and Antiviral Activities of Chemically Modified Peptides Against Dengue Serotypes 1-4. J Pharm Sci 2024; 113:587-595. [PMID: 38103687 DOI: 10.1016/j.xphs.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/09/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
Dengue presents a major public health concern in over 100 countries due to the absence of an effective vaccine and antiviral therapy against all four dengue virus (DENV) serotypes. Several antiviral peptides were previously reported to inhibit at least three or all four DENV serotypes. Chemical modifications such as d-amino acid substitutions, polyethylene glycol (PEG)ylation, and cyclization could be applied to peptides to improve their biological activities and stability in serum. The PEGylated peptide 3 (PEG-P3) was identified to be the most promising antiviral candidate as it demonstrated good inhibitory effects against all four DENV serotypes during the pre- and post-infection stages, Based on the RP-HPLC and LC/MS analysis, peptide 4 was identified to be more stable in human serum than peptide 3, with 78.9 % and 41.6 % of the peptides remaining after 72 h of incubation in human serum, respectively. Both peptides were also able to retain their antiviral activities against specific DENV serotypes after 72 h incubation in human serum. PEG-P3 was found to be more stable than the unmodified peptide 3 with 89.4 % of PEG-P3 remaining in the human serum after 72 h of incubation. PEG-P3 was able to retain its inhibitory effects against DENV-1 to 4 after 72 h of incubation in human serum. This study provided insights into the antiviral activities and stabilities of the unmodified and chemically modified peptides in human serum.
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Affiliation(s)
- Michelle Felicia Lee
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, 5, Jalan Universiti, Bandar Sunway, Selangor 47500, Malaysia
| | - Mohd Ishtiaq Anasir
- Virology Unit, Infectious Disease Research Centre, Institute for Medical Research, National Institutes of Health, Setia Alam, Shah Alam, Selangor Malaysia
| | - Chit Laa Poh
- Centre for Virus and Vaccine Research, School of Medical and Life Sciences, Sunway University, 5, Jalan Universiti, Bandar Sunway, Selangor 47500, Malaysia.
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6
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D'Aloisio V, Schofield A, Kendall DA, Hutcheon GA, Coxon CR. The development and optimisation of an HPLC-based in vitro serum stability assay for a calcitonin gene-related peptide receptor antagonist peptide. J Pept Sci 2024; 30:e3539. [PMID: 37605343 DOI: 10.1002/psc.3539] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/02/2023] [Accepted: 08/03/2023] [Indexed: 08/23/2023]
Abstract
Evaluation of the stability of peptide drug candidates in biological fluids, such as blood serum, is of high importance during the lead optimisation phase. Here, we describe the optimisation and validation of a method for the evaluation of the stability of a lead calcitonin gene-related peptide antagonist peptide (P006) in blood serum. After initially determining appropriate peptide and human serum concentrations and selection of the quenching reagent, the HPLC method optimisation used two experimental designs, Plackett-Burman design and Taguchi design. The analytical method was validated as complying with the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use guidelines. The optimised method allowed the successful resolution of the parent peptide from its metabolites using RP-HPLC and identification of the major metabolites of P006 by mass spectrometry. This paradigm may be widely adopted as a robust early-stage platform for screening peptide stability to rule out candidates with low in vitro stability, which would likely translate into poor in vivo pharmacokinetics.
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Affiliation(s)
- Vera D'Aloisio
- School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, UK
- EaStChem School of Chemistry, The University of Edinburgh, Joseph Black Building, Edinburgh, UK
| | - Adam Schofield
- EaStChem School of Chemistry, The University of Edinburgh, Joseph Black Building, Edinburgh, UK
| | | | - Gillian A Hutcheon
- School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Liverpool, UK
| | - Christopher R Coxon
- EaStChem School of Chemistry, The University of Edinburgh, Joseph Black Building, Edinburgh, UK
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7
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Budhwani Z, Buragina JT, Lang J, Acedo JZ. Characterization of the Novel Leaderless Bacteriocin, Bawcin, from Bacillus wiedmannii. Int J Mol Sci 2023; 24:16965. [PMID: 38069290 PMCID: PMC10707071 DOI: 10.3390/ijms242316965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The rise of drug-resistant bacteria is a major threat to public health, highlighting the urgent need for new antimicrobial compounds and treatments. Bacteriocins, which are ribosomally synthesized antimicrobial peptides produced by bacteria, hold promise as alternatives to conventional antibiotics. In this study, we identified and characterized a novel leaderless bacteriocin, bawcin, the first bacteriocin to be characterized from a Bacillus wiedmannii species. Chemically synthesized and purified bawcin was shown to be active against a broad range of Gram-positive bacteria, including foodborne pathogens Staphylococcus aureus, Bacillus cereus, and Listeria monocytogenes. Stability screening revealed that bawcin is stable over a wide range of pH (2.0-10.0), temperature conditions (25-100 °C), and against the proteases, papain and pepsin. Lastly, three-dimensional structure homology modeling suggests that bawcin contains a saposin-fold with amphipathic helices and a highly cationic surface that may be critical for membrane interaction and the subsequent cell death of its targets. This study provides the foundational understanding of the activity and properties of bawcin, offering valuable insights into its applications across different antimicrobial uses, including as a natural preservative in food and livestock industries.
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Affiliation(s)
- Zafina Budhwani
- Department of Chemistry and Physics, Mount Royal University, Calgary, AB T3E 6K6, Canada;
| | - Jenna T. Buragina
- Department of Biology, Mount Royal University, Calgary, AB T3E 6K6, Canada; (J.T.B.)
| | - Jen Lang
- Department of Biology, Mount Royal University, Calgary, AB T3E 6K6, Canada; (J.T.B.)
| | - Jeella Z. Acedo
- Department of Chemistry and Physics, Mount Royal University, Calgary, AB T3E 6K6, Canada;
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8
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Maasch JRMA, Torres MDT, Melo MCR, de la Fuente-Nunez C. Molecular de-extinction of ancient antimicrobial peptides enabled by machine learning. Cell Host Microbe 2023; 31:1260-1274.e6. [PMID: 37516110 DOI: 10.1016/j.chom.2023.07.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 05/12/2023] [Accepted: 07/06/2023] [Indexed: 07/31/2023]
Abstract
Molecular de-extinction could offer avenues for drug discovery by reintroducing bioactive molecules that are no longer encoded by extant organisms. To prospect for antimicrobial peptides encrypted within extinct and extant human proteins, we introduce the panCleave random forest model for proteome-wide cleavage site prediction. Our model outperformed multiple protease-specific cleavage site classifiers for three modern human caspases, despite its pan-protease design. Antimicrobial activity was observed in vitro for modern and archaic protein fragments identified with panCleave. Lead peptides showed resistance to proteolysis and exhibited variable membrane permeabilization. Additionally, representative modern and archaic protein fragments showed anti-infective efficacy against A. baumannii in both a skin abscess infection model and a preclinical murine thigh infection model. These results suggest that machine-learning-based encrypted peptide prospection can identify stable, nontoxic peptide antibiotics. Moreover, we establish molecular de-extinction through paleoproteome mining as a framework for antibacterial drug discovery.
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Affiliation(s)
- Jacqueline R M A Maasch
- Department of Computer and Information Science, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA; Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Bioengineering, Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Marcelo D T Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Bioengineering, Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Marcelo C R Melo
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Bioengineering, Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Bioengineering, Department of Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA 19104, USA; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA.
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9
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Zhao S, Zhang Y, Xu Z, Wang H, Xu L, Wu Y, Zeng X, Luo X. A low-fouling electrochemical biosensor for biomarker detection in serum based on designed α/β-peptides with anti-enzymolysis and antifouling capabilities. Anal Chim Acta 2023; 1263:341244. [PMID: 37225330 DOI: 10.1016/j.aca.2023.341244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/16/2023] [Accepted: 04/20/2023] [Indexed: 05/26/2023]
Abstract
The zwitterionic peptides, especially those composed of glutamic (E) and lysine (K) groups have drawn enormous attention as antifouling biomaterials owing to their strong hydration capability and biocompatibility. However, the susceptibility of α-amino acid K to the proteolytic enzymes in human serum limited the broad application of such peptides in biological media. Herein, a new multifunctional peptide with favorable stability in human serum was designed, and it was composed of three sections with immobilizing, recognizing and antifouling capabilities, respectively. The antifouling section was composed of alternating E and K amino acids, but the enzymolysis-susceptive amino acid α-K was replaced by the unnatural β-K. Compared with the conventional peptide composed of all α-amino acids, the α/β-peptide exhibited significantly enhanced stability and longer antifouling performance in human serum and blood. The electrochemical biosensor based on the α/β-peptide showed a favorable sensitivity to its target IgG, with a quite wide linear range from 100 pg mL-1 to 10 μg mL-1 and a low detection limit (33.7 pg mL-1, S/N = 3), and it was promising for the detection of IgG in complex human serum. The tactic of designing antifouling α/β-peptides offered an efficient way to develop low-fouling biosensors with robust operation in complex body fluids.
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Affiliation(s)
- Shuju Zhao
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Yuxi Zhang
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Zhenying Xu
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Hao Wang
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Liang Xu
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Yumin Wu
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Xianghua Zeng
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
| | - Xiliang Luo
- State Key Laboratory Base of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao, 266042, China.
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10
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Tasdemiroglu Y, Gourdie RG, He JQ. In vivo degradation forms, anti-degradation strategies, and clinical applications of therapeutic peptides in non-infectious chronic diseases. Eur J Pharmacol 2022; 932:175192. [PMID: 35981605 DOI: 10.1016/j.ejphar.2022.175192] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/01/2022] [Accepted: 08/05/2022] [Indexed: 11/03/2022]
Abstract
Current medicinal treatments for diseases comprise largely of two categories: small molecular (chemical) (e.g., aspirin) and larger molecular (peptides/proteins, e.g., insulin) drugs. Whilst both types of therapeutics can effectively treat different diseases, ranging from well-understood (in view of pathogenesis and treatment) examples (e.g., flu), to less-understood chronic diseases (e.g., diabetes), classical small molecule drugs often possess significant side-effects (a major cause of drug withdrawal from market) due to their low- or non-specific targeting. By contrast, therapeutic peptides, which comprise short sequences from naturally occurring peptides/proteins, commonly demonstrate high target specificity, well-characterized modes-of-action, and low or non-toxicity in vivo. Unfortunately, due to their small size, linear permutation, and lack of tertiary structure, peptidic drugs are easily subject to rapid degradation or loss in vivo through chemical and physical routines, thus resulting in a short half-life and reduced therapeutic efficacy, a major drawback that can reduce therapeutic efficiency. However, recent studies demonstrate that the short half-life of peptidic drugs can be significantly extended by various means, including use of enantiomeric or non-natural amino acids (AAs) (e.g., L-AAs replacement with D-AAs), chemical conjugation [e.g., with polyethylene glycol], and encapsulation (e.g., in exosomes). In this context, we provide an overview of the major in vivo degradation forms of small therapeutic peptides in the plasma and anti-degradation strategies. We also update on the progress of small peptide therapeutics that are either currently in clinical trials or are being successfully used in clinical therapies for patients with non-infectious diseases, such as diabetes, multiple sclerosis, and cancer.
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Affiliation(s)
- Yagmur Tasdemiroglu
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Robert G Gourdie
- Center for Vascular and Heart Research, Fralin Biomedical Research Institute, Virginia Tech, Roanoke, VA, 24016, USA
| | - Jia-Qiang He
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, 24061, USA.
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11
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Bellotti D, Remelli M. Lights and Shadows on the Therapeutic Use of Antimicrobial Peptides. Molecules 2022; 27:molecules27144584. [PMID: 35889455 PMCID: PMC9317528 DOI: 10.3390/molecules27144584] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
The emergence of antimicrobial-resistant infections is still a major concern for public health worldwide. The number of pathogenic microorganisms capable of resisting common therapeutic treatments are constantly increasing, highlighting the need of innovative and more effective drugs. This phenomenon is strictly connected to the rapid metabolism of microorganisms: due to the huge number of mutations that can occur in a relatively short time, a colony can “adapt” to the pharmacological treatment with the evolution of new resistant species. However, the shortage of available antimicrobial drugs in clinical use is also caused by the high costs involved in developing and marketing new drugs without an adequate guarantee of an economic return; therefore, the pharmaceutical companies have reduced their investments in this area. The use of antimicrobial peptides (AMPs) represents a promising strategy for the design of new therapeutic agents. AMPs act as immune defense mediators of the host organism and show a poor ability to induce antimicrobial resistance, coupled with other advantages such as a broad spectrum of activity, not excessive synthetic costs and low toxicity of both the peptide itself and its own metabolites. It is also important to underline that many antimicrobial peptides, due to their inclination to attack cell membranes, have additional biological activities, such as, for example, as anti-cancer drugs. Unfortunately, they usually undergo rapid degradation by proteolytic enzymes and are characterized by poor bioavailability, preventing their extensive clinical use and landing on the pharmaceutical market. This review is focused on the strength and weak points of antimicrobial peptides as therapeutic agents. We give an overview on the AMPs already employed in clinical practice, which are examples of successful strategies aimed at overcoming the main drawbacks of peptide-based drugs. The review deepens the most promising strategies to design modified antimicrobial peptides with higher proteolytic stability with the purpose of giving a comprehensive summary of the commonly employed approaches to evaluate and optimize the peptide potentialities.
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Affiliation(s)
- Denise Bellotti
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy;
- Faculty of Chemistry, University of Wrocław, 50-383 Wrocław, Poland
| | - Maurizio Remelli
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
- Correspondence:
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12
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Study on In Vitro Metabolism and In Vivo Pharmacokinetics of Beauvericin. Toxins (Basel) 2022; 14:toxins14070477. [PMID: 35878215 PMCID: PMC9320654 DOI: 10.3390/toxins14070477] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/04/2022] [Accepted: 07/08/2022] [Indexed: 01/25/2023] Open
Abstract
Beauvericin (BEA) is a well-known mycotoxin produced by many fungi, including Beaveria bassiana. The purpose of this study was to evaluate the in vitro distribution and metabolism characteristics as well as the in vivo pharmacokinetic (PK) profile of BEA. The in vitro metabolism studies of BEA were performed using rat, dog, mouse, monkey and human liver microsomes, cryopreserved hepatocytes and plasma under conditions of linear kinetics to estimate the respective elimination rates. Additionally, LC-UV-MSn (n = 1~2) was used to identify metabolites in human, rat, mouse, dog and monkey liver microsomes. Furthermore, cytochrome P450 (CYP) reaction phenotyping was carried out. Finally, the absolute bioavailability of BEA was evaluated by intravenous and oral administration in rats. BEA was metabolically stable in the liver microsomes and hepatocytes of humans and rats; however, it was a strong inhibitor of midazolam 1′-hydroxylase (CYP3A4) and mephenytoin 4′-hydroxylase (CYP2C19) activities in human liver microsomes. The protein binding fraction values of BEA were >90% and the half-life (T1/2) values of BEA were approximately 5 h in the plasma of the five species. The absolute bioavailability was calculated to be 29.5%. Altogether, these data indicate that BEA has great potential for further development as a drug candidate. Metabolic studies of different species can provide important reference values for further safety evaluation.
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13
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Knaff PM, Müller P, Kersten C, Wettstein L, Münch J, Landfester K, Mailänder V. Structure-Based Design of High-Affinity and Selective Peptidomimetic Hepsin Inhibitors. Biomacromolecules 2022; 23:2236-2242. [PMID: 35593713 DOI: 10.1021/acs.biomac.1c01011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In many solid tumors, increased upregulation of transmembrane serine proteases (TTSPs) leads to an overactivation of growth factors, which promotes tumor progression. Here, we have used a combinatorial methodology to develop high-affinity tetrapeptidic inhibitors. A previous virtual screening of 8000 peptide combinations against the crystal structure of the TTSP hepsin identified a series of recognition sequences, customized for the non-prime substrate binding (P) sites of this serine protease. A combination of the top recognition sequences with an electrophilic warhead resulted in highly potent inhibitors with good selectivity against coagulation proteases factor Xa and thrombin. Structure-activity relationships of two selected compounds were further elucidated by investigation of their stability in biological fluids as well as the influence of the warhead and truncated inhibitors on the inhibitory potency. Overall, this methodology yielded compounds as selective inhibitors for potential cancer drug development, where hepsin is overexpressed.
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Affiliation(s)
- Philip Maximilian Knaff
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany.,Dermatology Clinic of the University Medicine of the Johannes Gutenberg University Mainz, Langenbeckstraße 1, Mainz 55131, Germany
| | - Patrick Müller
- Institute for Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Christian Kersten
- Institute for Pharmaceutical and Biomedical Sciences, Johannes Gutenberg University Mainz, Staudingerweg 5, Mainz 55128, Germany
| | - Lukas Wettstein
- Institute of Molecular Virology, Ulm University Medical Center, Ulm 89081, Germany
| | - Jan Münch
- Institute of Molecular Virology, Ulm University Medical Center, Ulm 89081, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Volker Mailänder
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany.,Dermatology Clinic of the University Medicine of the Johannes Gutenberg University Mainz, Langenbeckstraße 1, Mainz 55131, Germany
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14
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Park HJ, Kang HK, Park E, Kim MK, Park Y. Bactericidal activities and Action mechanism of the Novel Antimicrobial Peptide Hylin a1 and its analog peptides against Acinetobacter baumannii infection. Eur J Pharm Sci 2022; 175:106205. [PMID: 35561952 DOI: 10.1016/j.ejps.2022.106205] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 11/18/2022]
Abstract
We developed an antimicrobial peptide (AMP) as a candidate substance for replacing antibiotics. Previously, a novel 18-amino acid antimicrobial peptide Hylin a1 was isolated from an electro-stimulated arboreal South American frog Hypsiboas albopunctatus, and was found to demonstrate antimicrobial activity and cytotoxicity. In a recent study, the analog peptides were designed based on the parent peptide Hylin a1 to decrease toxicity and to maintain antimicrobial efficacy. The analog peptides were substituted with alanine and lysine, resulting in the formation of amphipathic α-helical structures in membrane-mimicking environments and in the induction of hydrophobic moments and net charges. Moreover, the analog peptides showed lower hemolytic effects and mammalian cell selectivity than Hylin a1. In particularly Hylin a1-11K and Hylin a1-15K exhibited broad-spectrum antimicrobial activity and anti-biofilm activity against carbapenem-resistant Acinetobacter baumannii. Permeability assays indicated that analog peptides eliminated bacteria by binding to lipopolysaccharide and by disrupting the bacterial membrane. Hylin a1-11K and Hylin a1-15K reduced inflammation by suppressing pro-inflammatory cytokines expression by A. baumannii infection and effectively ameliorated carbapenem-resistant A. baumannii infection in mice. Therefore, our results suggest that the analog peptide substituted with several residues based on Hylin a1 have antibacterial and anti-inflammatory activity, and may be effective in the treatment of carbapenem-resistant A. baumannii infection.
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Affiliation(s)
- Hee Joo Park
- Department of Biomedical Sciences, Chosun University, Gwangju, 61452, Republic of Korea
| | - Hee Kyoung Kang
- Department of Biomedical Sciences, Chosun University, Gwangju, 61452, Republic of Korea
| | - Eunji Park
- Department of Biomedical Sciences, Chosun University, Gwangju, 61452, Republic of Korea
| | - Min Kyung Kim
- Department of Biomedical Sciences, Chosun University, Gwangju, 61452, Republic of Korea
| | - Yoonkyung Park
- Department of Biomedical Sciences, Chosun University, Gwangju, 61452, Republic of Korea; Research Center for Proteineous Materials, Chosun University, Gwangju, 61452, South Korea.
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15
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Cesaro A, Torres MDT, Gaglione R, Dell'Olmo E, Di Girolamo R, Bosso A, Pizzo E, Haagsman HP, Veldhuizen EJA, de la Fuente-Nunez C, Arciello A. Synthetic Antibiotic Derived from Sequences Encrypted in a Protein from Human Plasma. ACS NANO 2022; 16:1880-1895. [PMID: 35112568 DOI: 10.1021/acsnano.1c04496] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Encrypted peptides have been recently found in the human proteome and represent a potential class of antibiotics. Here we report three peptides derived from the human apolipoprotein B (residues 887-922) that exhibited potent antimicrobial activity against drug-resistant Klebsiella pneumoniae, Acinetobacter baumannii, and Staphylococci both in vitro and in an animal model. The peptides had excellent cytotoxicity profiles, targeted bacteria by depolarizing and permeabilizing their cytoplasmic membrane, inhibited biofilms, and displayed anti-inflammatory properties. Importantly, the peptides, when used in combination, potentiated the activity of conventional antibiotics against bacteria and did not select for bacterial resistance. To ensure translatability of these molecules, a protease resistant retro-inverso variant of the lead encrypted peptide was synthesized and demonstrated anti-infective activity in a preclinical mouse model. Our results provide a link between human plasma and innate immunity and point to the blood as a source of much-needed antimicrobials.
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Affiliation(s)
- Angela Cesaro
- Department of Chemical Sciences, University of Naples Federico II, Naples I-80126, Italy
- Department of Biomolecular Health Sciences, Division of Infectious Diseases and Immunology, Section Molecular Host Defence, Faculty of Veterinary Medicine, Utrecht University, Utrecht 3584 CL, The Netherlands
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marcelo D T Torres
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Rosa Gaglione
- Department of Chemical Sciences, University of Naples Federico II, Naples I-80126, Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB), Rome 00136, Italy
| | - Eliana Dell'Olmo
- Department of Chemical Sciences, University of Naples Federico II, Naples I-80126, Italy
| | - Rocco Di Girolamo
- Department of Chemical Sciences, University of Naples Federico II, Naples I-80126, Italy
| | - Andrea Bosso
- Department of Biology, University of Naples Federico II, Naples I-80126, Italy
| | - Elio Pizzo
- Department of Biology, University of Naples Federico II, Naples I-80126, Italy
| | - Henk P Haagsman
- Department of Biomolecular Health Sciences, Division of Infectious Diseases and Immunology, Section Molecular Host Defence, Faculty of Veterinary Medicine, Utrecht University, Utrecht 3584 CL, The Netherlands
| | - Edwin J A Veldhuizen
- Department of Biomolecular Health Sciences, Division of Infectious Diseases and Immunology, Section Immunology, Faculty of Veterinary Medicine, Utrecht University, Utrecht 3584 CL, The Netherlands
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Angela Arciello
- Department of Chemical Sciences, University of Naples Federico II, Naples I-80126, Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB), Rome 00136, Italy
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16
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Blum AP, Yin J, Lin HH, Oliver BA, Kammeyer JK, Thompson MP, Gilson MK, Gianneschi NC. Stimuli Induced Uptake of Protein-Like Peptide Brush Polymers. Chemistry 2022; 28:e202103438. [PMID: 34811828 PMCID: PMC8861929 DOI: 10.1002/chem.202103438] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Indexed: 01/26/2023]
Abstract
Recently, we presented a strategy for packaging peptides as side-chains in high-density brush polymers. For this globular protein-like polymer (PLP) formulation, therapeutic peptides were shown to resist proteolytic degradation, enter cells efficiently and maintain biological function. In this paper, we establish the role charge plays in dictating the cellular uptake of these peptide formulations, finding that peptides with a net positive charge will enter cells when polymerized, while those formed from anionic or neutral peptides remain outside of cells. Given these findings, we explored whether cellular uptake could be selectively induced by a stimulus. In our design, a cationic peptide is appended to a sequence of charge-neutralizing anionic amino acids through stimuli-responsive cleavable linkers. As a proof-of-concept study, we tested this strategy with two different classes of stimuli, exogenous UV light and an enzyme (a matrix metalloproteinase) associated with the inflammatory response. The key finding is that these materials enter cells only when acted upon by the stimulus. This approach makes it possible to achieve delivery of the polymers, therapeutic peptides or an appended cargo into cells in response to an appropriate stimulus.
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Affiliation(s)
- Angela P Blum
- Department of Chemistry & Biochemistry, University of California San Diego, 9500 Gilman Drive, CA, 92093, La Jolla, United States
- Department of Chemistry, Hamilton College, 198 College Hill Road, NY 13323, Clinton, United States
| | - Jian Yin
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive, CA, 92093, La Jolla, United States
| | - Helen H Lin
- Department of Chemistry, Hamilton College, 198 College Hill Road, NY 13323, Clinton, United States
| | - Blayne A Oliver
- Department of Chemistry, Hamilton College, 198 College Hill Road, NY 13323, Clinton, United States
| | - Jacquelin K Kammeyer
- Department of Chemistry & Biochemistry, University of California San Diego, 9500 Gilman Drive, CA, 92093, La Jolla, United States
| | - Matthew P Thompson
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Department of Medicine, Department of Pharmacology, International Institute of Nanotechnology, Chemistry of Life Processes Institute, Northwestern University, 633 Clark St., IL, 60208, Evanston, United States
| | - Michael K Gilson
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, 9500 Gilman Drive, CA, 92093, La Jolla, United States
| | - Nathan C Gianneschi
- Department of Chemistry, Department of Materials Science & Engineering, Department of Biomedical Engineering, Department of Medicine, Department of Pharmacology, International Institute of Nanotechnology, Chemistry of Life Processes Institute, Northwestern University, 633 Clark St., IL, 60208, Evanston, United States
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17
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Liu M, Zhao P, Uddin MH, Li W, Lin F, Chandrashekar C, Nishiuchi Y, Kajihara Y, Forbes BE, Wootten D, Wade JD, Hossain MA. Chemical Synthesis and Characterization of a Nonfibrillating Glycoglucagon. Bioconjug Chem 2021; 32:2148-2153. [PMID: 34494823 DOI: 10.1021/acs.bioconjchem.1c00419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The current commercially available glucagon formulations for the treatment of severe hypoglycemia must be reconstituted immediately prior to use, owing to the susceptibility of glucagon to fibrillation and aggregation in an aqueous solution. This results in the inconvenience of handling, misuse, and wastage of this drug. To address these issues, we synthesized a glycosylated glucagon analogue in which the 25th residue (Trp) was replaced with a cysteine (Cys) and a Br-disialyloligosaccharide was conjugated at the Cys thiol moiety. The resulting analogue, glycoglucagon, is a highly potent full agonist at the glucagon receptor. Importantly, glycoglucagon exhibits markedly reduced propensity for fibrillation and enhanced thermal and metabolic stability. This novel analogue is thus a valuable lead for producing stable liquid glucagon formulations that will improve patient compliance and minimize wastage.
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Affiliation(s)
| | - Peishen Zhao
- Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Md Hemayet Uddin
- Melbourne Centre for Nanofabrication, Melbourne, Victoria 3168, Australia
| | | | | | | | - Yuji Nishiuchi
- GlyTech, Inc., 134 Chudoji Minamimachi, Kyoto, 600-8813, Japan
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8579, Japan
| | - Yasuhiro Kajihara
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043 Japan
| | - Briony E Forbes
- Discipline of Medical Biochemistry, College of Medicine and Public Health, Flinders University, Adelaide, South Australia 5042, Australia
| | - Denise Wootten
- Monash Institute of Pharmaceutical Sciences, 381 Royal Parade, Parkville, Victoria 3052, Australia
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18
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Zhang Z, Conant CR, El-Baba TJ, Raab SA, Fuller DR, Hales DA, Clemmer DE. Diketopiperazine Formation from FPG nK ( n = 1-9) Peptides: Rates of Structural Rearrangements and Mechanisms. J Phys Chem B 2021; 125:8107-8116. [PMID: 34270248 PMCID: PMC10661757 DOI: 10.1021/acs.jpcb.1c03515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Peptides with penultimate proline residues undergo trans → cis isomerization of the Phe1-Pro2 peptide bond followed by spontaneous bond cleavage at the Pro2-Xxx3 bond (where Xxx is another amino acid residue), leading to cleavage of the Pro2-Xxx3 bond and formation of a diketopiperazine (DKP). In this paper, ion mobility spectrometry and mass spectrometry techniques were used to study the dissociation kinetics of nine peptides [Phe1-Pro2-Glyn-Lysn+3 (n = 1-9)] in ethanol. Shorter (n = 1-3) peptides are found to be more stable than longer (n = 4-9) peptides. Alanine substitution studies indicate that, when experiments are initiated, the Phe1-Pro2 bond of the n = 9 peptide exists exclusively in the cis configuration, while the n = 1-8 peptides appear to exist initially with both cis- and trans-Phe1-Pro2 configured bonds. Molecular dynamics simulations indicate that intramolecular hydrogen bonding interactions stabilize conformations of shorter peptides, thus inhibiting DKP formation. Similar stabilizing interactions appear less frequently in longer peptides. In addition, in smaller peptides, the N-terminal amino group is more likely to be charged compared to the same group in longer peptides, which would inhibit the dissociation through the DKP formation mechanism. Analysis of temperature-dependent kinetics measurements provides insight about the mechanism of bond cleavage. The analysis gives the following transition state thermochemistry: ΔG⧧ values range from 94.6 ± 0.9 to 101.5 ± 1.9 kJ·mol-1, values of ΔH⧧ range from 89.1 ± 0.9 to 116.7 ± 1.5 kJ·mol-1, and ΔS⧧ values range from -25.4 ± 2.6 to 50.8 ± 4.2 J·mol-1·K-1. Proposed mechanisms and thermochemistry are discussed.
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Affiliation(s)
- Zhichao Zhang
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
| | - Christopher R Conant
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
| | - Tarick J El-Baba
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
| | - Shannon A Raab
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
| | - Daniel R Fuller
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
| | - David A Hales
- Department of Chemistry, Hendrix College, Conway, Arkansas, United States
| | - David E Clemmer
- Department of Chemistry, Indiana University, Bloomington, Indiana, United States
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19
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Liu H, Yang N, Teng D, Mao R, Hao Y, Ma X, Wang X, Wang J. Fatty acid modified-antimicrobial peptide analogues with potent antimicrobial activity and topical therapeutic efficacy against Staphylococcus hyicus. Appl Microbiol Biotechnol 2021; 105:5845-5859. [PMID: 34319418 DOI: 10.1007/s00253-021-11454-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 07/13/2021] [Accepted: 07/15/2021] [Indexed: 10/20/2022]
Abstract
There is an urgent need to explore new antimicrobial agents due to the looming threat of bacteria resistance. Bovine lactoferricin (LfcinB), as a multifunctional peptide, has the potential to be a new active drug in the future. In this study, it aims to investigate the effect of fatty acid conjugation on antimicrobial peptide activity and topical therapeutic efficacy in a mouse model infected with Staphylococcus hyicus. Both Lfcin4 and Lfcin5 were conjugated with the unsaturated fatty acid linoleic acid (18-C) at their N-terminus and modified by acylation at the C-terminus. The derived peptides of Lin-Lf4NH2 and Lin-Lf5NH2 showed better antibacterial activity (MICs of 3.27 to 6.64 μM) than their parent peptides (MICs of 1.83 to 59.57 μM). Lin-Lf4NH2 (63.2%, 5 min) and Lin-Lf5NH2 (35.8%, 5 min) could more rapidly penetrate bacterial membrane than Lf4NH2 (2.34%, 5 min) and Lf5NH2 (1.94%, 5 min), which further confirmed by the laser scanning confocal microscopy (LSCM). Electron microscopy observations showed Lin-Lf4NH2 and Lin-Lf5NH2 disrupted S. hyicus cell membranes and led to the leakage of contents. Furthermore, after treatment with Lin-Lf4NH2 and Lin-Lf5NH2, the abscess symptoms of mice were significantly alleviated; the recovery rate of abscesses scope of Lin-Lf4NH2 (73.25%) and Lin-Lf5NH2 (71.71%) were 38.8 and 37.9-fold higher than that of untreated group (1.89%), respectively, and superior to Lf4NH2 (46.87%) and Lf5NH2 (58.75%). They significantly reduced the bacterial load and the levels of the pro-inflammatory cytokines (TNF-α, IL-6, and IL-1β) and chemokine (MCP-1) in S. hyicus skin lesions. This study provides evidence that conjugation of a fatty acid to antimicrobial peptides can improve the activity and have potential for topical therapeutic of S. hyicus skin infections. KEY POINTS: • Lin-Lfcin4NH2/Lfcin5NH2 showed stronger antimicrobial activity than parent peptides. • Lin-Lfcin4NH2/Lfcin5NH2 had a more effective ability to destroy bacterial membranes. • Lin-Lfcin4NH2/Lfcin5NH2 showed a topically higher efficacy than parent peptides.
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Affiliation(s)
- He Liu
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Na Yang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Da Teng
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Ruoyu Mao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Ya Hao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Xuanxuan Ma
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Xiumin Wang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China.,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China
| | - Jianhua Wang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing, 100081, People's Republic of China. .,Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing, 100081, People's Republic of China.
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20
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Zarif F, Anasir MI, Koh JX, Chew MF, Poh CL. Stability and antiviral activity of SP40 peptide in human serum. Virus Res 2021; 303:198456. [PMID: 34314773 DOI: 10.1016/j.virusres.2021.198456] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 04/29/2021] [Accepted: 05/15/2021] [Indexed: 12/27/2022]
Abstract
Enterovirus A71 (EV-A71) is one of the main causative agents of hand, foot and mouth disease (HFMD). SP40 peptide was previously identified to inhibit EV-A71 strains from genotypes A, B and C. However, the stability and antiviral activity of SP40 peptide in human serum are yet to be established. To address this, we evaluated the stability and anti-EV-A71 activity of SP40 peptide after incubation in 25 % human serum. Reverse-phase high-performance liquid chromatography (RP-HPLC) and liquid chromatography-mass spectrometry (LC/MS) were utilized to evaluate serum stability and cleavage patterns of SP40 peptide after incubation in human serum. Cell protection assay was used to evaluate the anti-EV-A71 activity of SP40 peptide after incubation in human serum and to identify the minimal active sequence of SP40 peptide that retained antiviral activity. The results showed that the SP40 peptide was stable in human serum with 56 % of the full-length SP40 peptide being detected after 48 h incubation in human serum. The SP40 peptide was mainly cleaved by exopeptidases and no endoprotease recognition sites were identified within the SP40 peptide. Cell protection assays revealed that the SP40 peptide retained substantial activity after 24 and 48 h incubation in human serum. Furthermore, the data revealed that three amino acids at the N-terminus and one amino acid at the C-terminus of the SP40 peptide were dispensable for its antiviral activity. Importantly, the four truncated peptides displayed better potency than the full-length SP40 peptide. Overall, this study provided insights into the stability and activity of SP40 peptide in human serum and will facilitate the development of SP40 peptide as an anti-EV-A71 agent.
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Affiliation(s)
- Faisal Zarif
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, Malaysia; School of Medical and Life Sciences, Sunway University, Bandar Sunway, Malaysia
| | - Mohd Ishtiaq Anasir
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, Malaysia; School of Medical and Life Sciences, Sunway University, Bandar Sunway, Malaysia; Virology Unit, Infectious Disease Research Center, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, Selangor, Malaysia
| | - Jia Xuen Koh
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, Malaysia; School of Medical and Life Sciences, Sunway University, Bandar Sunway, Malaysia
| | - Miaw-Fang Chew
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, Malaysia
| | - Chit Laa Poh
- Centre for Virus and Vaccine Research, Sunway University, Bandar Sunway, Malaysia; School of Medical and Life Sciences, Sunway University, Bandar Sunway, Malaysia.
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21
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Song H, Tian Q, Li B. Novel Hyp-Gly-containing antiplatelet peptides from collagen hydrolysate after simulated gastrointestinal digestion and intestinal absorption. Food Funct 2021; 11:5553-5564. [PMID: 32520033 DOI: 10.1039/d0fo00219d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Bioactive components causing the antiplatelet activity upon collagen hydrolysate (CH) ingestion have not been clarified yet. This study aimed to identify antiplatelet peptides from CH after simulated gastrointestinal digestion and intestinal absorption. Four antiplatelet peptides containing the Hyp-Gly (OG) sequence including OG, Hyp-Gly-Glu (OGE), Pro-Gly-Glu-Hyp-Gly (PGEOG) and Val-Gly-Pro-Hyp-Gly-Pro-Ala (VGPOGPA) were successfully identified. All four peptides exhibited antiplatelet activity, but OGE and PGEOG exerted stronger activity than OG and VGPOGPA. The IC50 value of OGE and PGEOG was 1.076 mM and 1.167 mM, respectively. These four antiplatelet peptides could survive simulated gastrointestinal digestion and be absorbed intact by Caco-2 cells. Furthermore, plasma stability experiments showed that OG and OGE showed a good stability in human plasma, but PGEOG and VGPOGPA showed a relatively poor stability. In vivo studies indicated that OG and OGE were present in blood after the oral administration of CH. Meanwhile, OGE exerted significant in vivo anti-thrombotic activity after its ingestion. The present study clarifies the antiplatelet components causing the CH activity and highlights the potential application of CH or these four peptides as functional foods to combat thrombosis by inhibiting platelet aggregation.
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Affiliation(s)
- Hongdong Song
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China. and Shanghai Engineering Research Center for Food Rapid Detection, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Qi Tian
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Bo Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China. and Beijing Higher Institution Engineering Research Center of Animal Product, Beijing 100083, China
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22
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Ludwig BS, Kessler H, Kossatz S, Reuning U. RGD-Binding Integrins Revisited: How Recently Discovered Functions and Novel Synthetic Ligands (Re-)Shape an Ever-Evolving Field. Cancers (Basel) 2021; 13:1711. [PMID: 33916607 PMCID: PMC8038522 DOI: 10.3390/cancers13071711] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 12/19/2022] Open
Abstract
Integrins have been extensively investigated as therapeutic targets over the last decades, which has been inspired by their multiple functions in cancer progression, metastasis, and angiogenesis as well as a continuously expanding number of other diseases, e.g., sepsis, fibrosis, and viral infections, possibly also Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2). Although integrin-targeted (cancer) therapy trials did not meet the high expectations yet, integrins are still valid and promising targets due to their elevated expression and surface accessibility on diseased cells. Thus, for the future successful clinical translation of integrin-targeted compounds, revisited and innovative treatment strategies have to be explored based on accumulated knowledge of integrin biology. For this, refined approaches are demanded aiming at alternative and improved preclinical models, optimized selectivity and pharmacological properties of integrin ligands, as well as more sophisticated treatment protocols considering dose fine-tuning of compounds. Moreover, integrin ligands exert high accuracy in disease monitoring as diagnostic molecular imaging tools, enabling patient selection for individualized integrin-targeted therapy. The present review comprehensively analyzes the state-of-the-art knowledge on the roles of RGD-binding integrin subtypes in cancer and non-cancerous diseases and outlines the latest achievements in the design and development of synthetic ligands and their application in biomedical, translational, and molecular imaging approaches. Indeed, substantial progress has already been made, including advanced ligand designs, numerous elaborated pre-clinical and first-in-human studies, while the discovery of novel applications for integrin ligands remains to be explored.
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Affiliation(s)
- Beatrice S. Ludwig
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
| | - Horst Kessler
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Susanne Kossatz
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Ute Reuning
- Clinical Research Unit, Department of Obstetrics and Gynecology, University Hospital Klinikum Rechts der Isar, Technical University Munich, 81675 Munich, Germany
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23
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Lee SY, Lee DY, Hur SJ. Changes in the stability and antioxidant activities of different molecular weight bioactive peptide extracts obtained from beef during in vitro human digestion by gut microbiota. Food Res Int 2021; 141:110116. [PMID: 33641983 DOI: 10.1016/j.foodres.2021.110116] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/16/2020] [Accepted: 01/04/2021] [Indexed: 01/12/2023]
Abstract
This study was conducted to determine changes in the stability and antioxidant activity of extracts of bioactive peptides with different molecular weights (<3 and <10 kDa) obtained from beef myofibrillar protein using commercial enzymes (alkaline-AK and papain) during in vitro human digestion by gut microbiota. After the digestion in the large intestine, the stability of the bioactive peptide extracts decreased regardless of their molecular weight. However, the peptides obtained following alkaline-AK treatment were less stable than those obtained following papain digestion. The radical scavenging activities of the peptide extracts also decreased during in vitro human digestion, regardless of the molecular weights of the peptides and the commercial enzymes used. These results indicate that the stability and antioxidative activity of the bioactive peptides were affected by the digestion process by the gut microbiota. This study provides data supporting the changes in the stability and bioavailability of functional materials within the human body.
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Affiliation(s)
- Seung Yun Lee
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daeduk-myeon, Anseong-si, Gyeonggi-do 456-756, Republic of Korea
| | - Da Young Lee
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daeduk-myeon, Anseong-si, Gyeonggi-do 456-756, Republic of Korea
| | - Sun Jin Hur
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daeduk-myeon, Anseong-si, Gyeonggi-do 456-756, Republic of Korea.
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24
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Kim GC, Cheon DH, Lee Y. Challenge to overcome current limitations of cell-penetrating peptides. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2021; 1869:140604. [PMID: 33453413 DOI: 10.1016/j.bbapap.2021.140604] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/21/2020] [Accepted: 01/11/2021] [Indexed: 12/14/2022]
Abstract
The penetration of biological membranes is a prime obstacle for the delivery of pharmaceutical drugs. Cell-penetrating peptide (CPP) is an efficient vehicle that can deliver various cargos across the biological membranes. Since the discovery, CPPs have been rigorously studied to unveil the underlying penetrating mechanism as well as to exploit CPPs for various biomedical applications. This review will focus on the various strategies to overcome current limitations regarding stability, selectivity, and efficacy of CPPs.
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Affiliation(s)
- Gyu Chan Kim
- Department of Chemistry, Seoul National University, Seoul 151-742, Republic of Korea
| | - Dae Hee Cheon
- Department of Chemistry, Seoul National University, Seoul 151-742, Republic of Korea
| | - Yan Lee
- Department of Chemistry, Seoul National University, Seoul 151-742, Republic of Korea.
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25
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Integrated Imaging Methodology Detects Claudin-1 Expression in Premalignant Nonpolypoid and Polypoid Colonic Epithelium in Mice. Clin Transl Gastroenterol 2020; 11:e00089. [PMID: 31922993 PMCID: PMC7056050 DOI: 10.14309/ctg.0000000000000089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES Conventional colonoscopy with white light illumination detects colonic adenomas based on structural changes alone and is limited by a high miss rate. We aim to demonstrate an integrated imaging strategy that combines wide-field endoscopy and confocal endomicroscopy in real time to visualize molecular expression patterns in vivo to detect premalignant colonic mucosa. METHODS A peptide specific for claudin-1 is labeled with Cy5.5 and administrated intravenously in genetically engineered mice that develop adenomas spontaneously in the distal colon. Wide-field endoscopy is used to identify the presence of nonpolypoid and polypoid adenomas. Anatomic landmarks are used to guide placement of a confocal endomicroscope with side-view optics to visualize claudin-1 expression patterns with subcellular resolution. RESULTS Wide-field fluorescence images show peak uptake in colon adenoma at ∼1 hour after systemic peptide administration, and lesion margins are clearly defined. Further examination of the lesion using a confocal endomicroscope shows dysplastic crypts with large size, elongated shape, distorted architecture, and variable dimension compared with normal. The mean fluorescence intensity is significantly higher for dysplasia than normal. Increased claudin-1 expression in dysplasia vs normal is confirmed ex vivo, and the binding pattern is consistent with the in vivo imaging results. DISCUSSION Wide-field endoscopy can visualize molecular expression of claudin-1 in vivo to localize premalignant colonic mucosa, and confocal endomicroscopy can identify subcellular feature to distinguish dysplasia from normal.
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26
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Repurposing a peptide toxin from wasp venom into antiinfectives with dual antimicrobial and immunomodulatory properties. Proc Natl Acad Sci U S A 2020; 117:26936-26945. [PMID: 33046640 DOI: 10.1073/pnas.2012379117] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Novel antibiotics are urgently needed to combat multidrug-resistant pathogens. Venoms represent previously untapped sources of novel drugs. Here we repurposed mastoparan-L, the toxic active principle derived from the venom of the wasp Vespula lewisii, into synthetic antimicrobials. We engineered within its N terminus a motif conserved among natural peptides with potent immunomodulatory and antimicrobial activities. The resulting peptide, mast-MO, adopted an α-helical structure as determined by NMR, exhibited increased antibacterial properties comparable to standard-of-care antibiotics both in vitro and in vivo, and potentiated the activity of different classes of antibiotics. Mechanism-of-action studies revealed that mast-MO targets bacteria by rapidly permeabilizing their outer membrane. In animal models, the peptide displayed direct antimicrobial activity, led to enhanced ability to attract leukocytes to the infection site, and was able to control inflammation. Permutation studies depleted the remaining toxicity of mast-MO toward human cells, yielding derivatives with antiinfective activity in animals. We demonstrate a rational design strategy for repurposing venoms into promising antimicrobials.
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27
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Seetaha S, Hannongbua S, Rattanasrisomporn J, Choowongkomon K. Novel peptides with HIV-1 reverse transcriptase inhibitory activity derived from the fruits of Quercus infectoria. Chem Biol Drug Des 2020; 97:157-166. [PMID: 32757477 DOI: 10.1111/cbdd.13770] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 06/28/2020] [Accepted: 07/25/2020] [Indexed: 01/07/2023]
Abstract
The HIV-1 reverse transcriptase (HIV-1 RT), which is responsible for transcription of viral RNA genomes into DNA genomes, has become an important target for the treatment of patients with HIV infection. Hydrolyzed peptides from plants are considered a new source of potential drugs. In order to develop new effective inhibitors, peptides extracted from 111 Asian medicinal plants were screened against the HIV-1 RT. The crude hydrolyzed peptides from the fruit peel of Quercus infectoria were selected for purification and peptide sequence determination by HPLC and LC-MS. Two peptides of interest were synthesized, and an IC50 test was performed to determine their ability to inhibit the HIV-1 RT. The IC50 values of the peptides AIHIILI and LIAVSTNIIFIVV were determined to be 274 ± 5.10 nm and 236.4 ± 7.07 nm, respectively. This indicated that these peptides could be further developed as potential HIV-1 RT inhibitors.
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Affiliation(s)
- Supaphorn Seetaha
- Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok, Thailand
| | - Supa Hannongbua
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand
| | - Jatuporn Rattanasrisomporn
- Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok, Thailand.,Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Kiattawee Choowongkomon
- Department of Biochemistry, Faculty of Science, Kasetsart University, Bangkok, Thailand.,Omics Center for Agriculture, Bioresources, Food and Health, Kasetsart University, Bangkok, Thailand
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28
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Guan F, Fay S, Li X, You Y, Robinson MA. Identification of ex vivo catabolites of peptides with doping potential in equine plasma by HILIC-HRMS. Drug Test Anal 2020; 12:771-784. [PMID: 32100400 DOI: 10.1002/dta.2781] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 11/05/2022]
Abstract
Bioactive peptides pose a great threat to sports integrity. The detection of these peptides is essential for enforcing their prohibition in sports. Identifying the catabolites of these peptides that are formed ex vivo in plasma may improve their detection. In the present study, the stability of 27 bioactive peptides with protection at both termini in equine plasma was examined under different incubation conditions, using HILIC coupled to HRMS. Of the 27 peptides, 13 were stable after incubation at 37°C for 72 hr, but the remaining 14 were less stable. Ex vivo catabolites of these 14 peptides were detected using their theoretical masses generated in silico, their appearance was monitored over the time course of incubation, and their identity was verified by their product ion spectra. Catabolites identified for chemotactic peptide, DALDA, dmtDALDA, deltorphins I and II, Hyp6 -dermorphin, Lys7 -dermorphin, and dermorphin analog are novel. A d-amino acid residue at position 2 or 1 of a peptide or next to its C-terminus protected the relevant terminal from degradation by exopeptidases, but such a residue at position 3 did not. A pGlu residue or N-methylation at the N-terminus of a peptide did not protect its N-terminal. Ethylamide at the C-terminus of a peptide provided the C-terminal protection from attacks by carboxypeptidases. The C-terminal Lys amide in DALDA, dmtDALDA, and Lys7 -dermorphin was susceptible to cleavage by plasma enzymes, which is the first report, to the authors' knowledge. The results from the present study provide insights into the stability of peptides in plasma.
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Affiliation(s)
- Fuyu Guan
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, Kennett Square, PA, USA.,Pennsylvania Equine Toxicology and Research Laboratory, West Chester, PA, USA
| | - Savannah Fay
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, Kennett Square, PA, USA.,Pennsylvania Equine Toxicology and Research Laboratory, West Chester, PA, USA
| | - Xiaoqing Li
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, Kennett Square, PA, USA.,Pennsylvania Equine Toxicology and Research Laboratory, West Chester, PA, USA
| | - Youwen You
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, Kennett Square, PA, USA.,Pennsylvania Equine Toxicology and Research Laboratory, West Chester, PA, USA
| | - Mary A Robinson
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, New Bolton Center Campus, Kennett Square, PA, USA.,Pennsylvania Equine Toxicology and Research Laboratory, West Chester, PA, USA
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29
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Ho NT, Buchmann M. Comparison of Theory and Practice in the Framework for Quantifying Interaction Capacity through Six Interaction Parameters Using tert-Butanol as a Target Molecule. ACS OMEGA 2020; 5:6031-6038. [PMID: 32226884 PMCID: PMC7098049 DOI: 10.1021/acsomega.9b04399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
Molecular interactions are important for various areas of research. Interactions between a target molecule and probe molecules having their own interaction capacity can be quantified via six interaction parameters. The theoretical interaction energy can be calculated from the interaction parameters, while that of experimental is measured using a calorimeter. These two methods are proposed in this work to calculate them. The first is based on an equation linking Hansen's and Drago's parameters. The second method is based on an experimental matrix formed by the interaction energies of tert-butanol with the probe molecules characterized by their six interaction parameters. Finally, the quality of the experiment matrix is checked for the effectiveness of the six experimental interaction parameters of the target molecule, which is tert-butanol. Then, these experimental values are compared with theoretical values from interaction parameters.
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30
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Development of chimeric peptides to facilitate the neutralisation of lipopolysaccharides during bactericidal targeting of multidrug-resistant Escherichia coli. Commun Biol 2020; 3:41. [PMID: 31974490 PMCID: PMC6978316 DOI: 10.1038/s42003-020-0761-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 12/02/2019] [Indexed: 11/16/2022] Open
Abstract
Pathogenic Escherichia coli can cause fatal diarrheal diseases in both animals and humans. However, no antibiotics or antimicrobial peptides (AMPs) can adequately kill resistant bacteria and clear bacterial endotoxin, lipopolysaccharide (LPS) which leads to inflammation and sepsis. Here, the LPS-targeted smart chimeric peptides (SCPs)-A6 and G6 are generated by connecting LPS-targeting peptide-LBP14 and killing domain-N6 via different linkers. Rigid and flexible linkers retain the independent biological activities from each component. SCPs-A6 and G6 exert low toxicity and no bacterial resistance, and they more rapidly kill multiple-drug-resistant E. coli and more effectively neutralize LPS toxicity than N6 alone. The SCPs can enhance mouse survival more effectively than N6 or polymyxin B and alleviate lung injuries by blocking mitogen-activated protein kinase and nuclear factor kappa-B p65 activation. These findings uniquely show that SCPs-A6 and G6 may be promising dual-function candidates as improved antibacterial and anti-endotoxin agents to treat bacterial infection and sepsis. Wang ZL and Wang XM design bactericidal peptides in which an antimicrobial domain is fused to a domain that facilitates the neutralisation of lipoplysaccaride (LPS) to prevent inflammation associated with the targeting of Gram-negative bacteria. They characterise their properties and structures, and show their efficiency in vitro and in vivo.
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31
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Hofmann S, Bellmann-Sickert K, Beck-Sickinger AG. Chemical modification of neuropeptide Y for human Y1 receptor targeting in health and disease. Biol Chem 2019; 400:299-311. [PMID: 30653463 DOI: 10.1515/hsz-2018-0364] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 12/17/2018] [Indexed: 12/14/2022]
Abstract
As a very abundant neuropeptide in the brain and widely distributed peptide hormone in the periphery, neuropeptide Y (NPY) appears to be a multisignaling key peptide. Together with peptide YY, pancreatic polypeptide and the four human G protein-coupled receptor subtypes hY1R, hY2R, hY4R and hY5R it forms the NPY/hYR multiligand/multireceptor system, which is involved in essential physiological processes as well as in human diseases. In particular, NPY-induced hY1R signaling plays a central role in the regulation of food intake and stress response as well as in obesity, mood disorders and cancer. Thus, several hY1R-preferring NPY analogs have been developed as versatile tools to unravel the complex NPY/hY1R signaling in health and disease. Further, these peptides provide basic lead structures for the development of innovative drugs. Here, the current research is summarized focusing on the development of differently sized hY1R-preferring NPY analogs as well as their advances with respect to hY1R profiling, potential therapeutic applications and targeted cancer imaging and therapy. Finally, major limitations and innovative strategies for next generation hY1R-preferring NPY analogs are addressed.
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Affiliation(s)
- Sven Hofmann
- Institute of Biochemistry, Faculty of Life Sciences, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
| | - Kathrin Bellmann-Sickert
- Institute of Biochemistry, Faculty of Life Sciences, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
| | - Annette G Beck-Sickinger
- Institute of Biochemistry, Faculty of Life Sciences, Leipzig University, Brüderstr. 34, D-04103 Leipzig, Germany
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32
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Patil S, Narvekar A, Puranik A, Jain R, Dandekar P. Formulation of Therapeutic Proteins: Strategies for Developing Oral Protein Formulations. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/9783527812172.ch12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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33
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Acevedo ICC, Silva Jr PI, Silva FD, Araújo I, Alves FL, Oliveira CS, Oliveira Jr VX. IsCT‐based analogs intending better biological activity. J Pept Sci 2019; 25:e3219. [DOI: 10.1002/psc.3219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/20/2019] [Accepted: 09/03/2019] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Fernanda Dias Silva
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André SP Brazil
| | - Iris Araújo
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André SP Brazil
| | - Flávio Lopes Alves
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André SP Brazil
- Departamento de BiofísicaUniversidade Federal de São Paulo São Paulo SP Brazil
| | | | - Vani Xavier Oliveira Jr
- Centro de Ciências Naturais e HumanasUniversidade Federal do ABC Santo André SP Brazil
- Departamento de BiofísicaUniversidade Federal de São Paulo São Paulo SP Brazil
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34
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Fuller DR, Conant CR, El-Baba TJ, Zhang Z, Molloy KR, Zhang CS, Hales DA, Clemmer DE. Monitoring the stabilities of a mixture of peptides by mass-spectrometry-based techniques. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:73-81. [PMID: 30773926 PMCID: PMC7702224 DOI: 10.1177/1469066718798718] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Biomolecular degradation plays a key role in proteostasis. Typically, proteolytic enzymes degrade proteins into smaller peptides by breaking amino acid bonds between specific residues. Cleavage around proline residues is often missed and requires highly specific enzymes for peptide processing due to the cyclic proline side-chain. However, degradation can occur spontaneously (i.e. in the absence of enzymes). In this study, the influence of the first residue on the stability of a series of penultimate proline containing peptides, with the sequence Xaa-Pro-Gly-Gly (where Xaa is any amino acid), is investigated with mass spectrometry techniques. Peptides were incubated as mixtures at various solution temperatures (70℃ to 90℃) and were periodically sampled over the duration of the experiment. At elevated temperatures, we observe dissociation after the Xaa-Pro motif for all sequences, but at different rates. Transition state thermochemistry was obtained by studying the temperature-dependent kinetics and although all peptides show relatively small differences in the transition state free energies (∼95 kJ/mol), there is significant variability in the transition state entropy and enthalpy. This demonstrates that the side-chain of the first amino acid has a significant influence on the stability of the Xaa-Pro sequence. From these data, we demonstrate the ability to simultaneously measure the dissociation kinetics and relative transition state thermochemistries for a mixture of peptides, which vary only in the identity of the N-terminal amino acid.
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Affiliation(s)
- Daniel R Fuller
- Department of Chemistry, Indiana University, Bloomington, IN, USA
| | | | - Tarick J El-Baba
- Department of Chemistry, Indiana University, Bloomington, IN, USA
| | - Zhichao Zhang
- Department of Chemistry, Indiana University, Bloomington, IN, USA
| | | | - Connie S Zhang
- Department of Chemistry, Hendrix College, Conway, AR, USA
| | - David A Hales
- Department of Chemistry, Hendrix College, Conway, AR, USA
| | - David E Clemmer
- Department of Chemistry, Indiana University, Bloomington, IN, USA
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35
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Torres MDT, Pedron CN, Higashikuni Y, Kramer RM, Cardoso MH, Oshiro KGN, Franco OL, Silva Junior PI, Silva FD, Oliveira Junior VX, Lu TK, de la Fuente-Nunez C. Structure-function-guided exploration of the antimicrobial peptide polybia-CP identifies activity determinants and generates synthetic therapeutic candidates. Commun Biol 2018; 1:221. [PMID: 30534613 PMCID: PMC6286318 DOI: 10.1038/s42003-018-0224-2] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 10/18/2018] [Indexed: 12/20/2022] Open
Abstract
Antimicrobial peptides (AMPs) constitute promising alternatives to classical antibiotics for the treatment of drug-resistant infections, which are a rapidly emerging global health challenge. However, our understanding of the structure-function relationships of AMPs is limited, and we are just beginning to rationally engineer peptides in order to develop them as therapeutics. Here, we leverage a physicochemical-guided peptide design strategy to identify specific functional hotspots in the wasp-derived AMP polybia-CP and turn this toxic peptide into a viable antimicrobial. Helical fraction, hydrophobicity, and hydrophobic moment are identified as key structural and physicochemical determinants of antimicrobial activity, utilized in combination with rational engineering to generate synthetic AMPs with therapeutic activity in a mouse model. We demonstrate that, by tuning these physicochemical parameters, it is possible to design nontoxic synthetic peptides with enhanced sub-micromolar antimicrobial potency in vitro and anti-infective activity in vivo. We present a physicochemical-guided rational design strategy to generate peptide antibiotics.
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Affiliation(s)
- Marcelo D. T. Torres
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Cibele N. Pedron
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Yasutomi Higashikuni
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
| | - Robin M. Kramer
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
| | - Marlon H. Cardoso
- Programa de Pós-Gradução em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, Brasília, DF 70297400 Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, DF 71966700 Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Karen G. N. Oshiro
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Octávio L. Franco
- Programa de Pós-Gradução em Patologia Molecular, Faculdade de Medicina, Universidade de Brasília, Brasília, DF 70297400 Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, DF 71966700 Brazil
- S-inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS 79117010 Brazil
| | - Pedro I. Silva Junior
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP 05503900 Brazil
| | - Fernanda D. Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Vani X. Oliveira Junior
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, SP 09210580 Brazil
| | - Timothy K. Lu
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
| | - Cesar de la Fuente-Nunez
- Synthetic Biology Group, MIT Synthetic Biology Center; The Center for Microbiome Informatics and Therapeutics; Research Laboratory of Electronics, Department of Biological Engineering, and Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139 USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142 USA
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36
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Abbas A, Yu L, Lalonde T, Wu D, Thiessen JD, Luyt LG, Dhanvantari S. Development and Characterization of an 18F-labeled Ghrelin Peptidomimetic for Imaging the Cardiac Growth Hormone Secretagogue Receptor. Mol Imaging 2018; 17:1536012118809587. [PMID: 30394854 PMCID: PMC6236854 DOI: 10.1177/1536012118809587] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
One-third of patients with heart disease develop heart failure, which is diagnosed
through imaging and detection of circulating biomarkers. Imaging strategies reveal
morphologic and functional changes but fall short of detecting molecular abnormalities
that can lead to heart failure, and circulating biomarkers are not cardiac specific. Thus,
there is critical need for biomarkers that are endogenous to myocardial tissues. The
cardiac growth hormone secretagogue receptor 1a (GHSR1a), which binds the hormone ghrelin,
is a potential biomarker for heart failure. We have synthesized and characterized a novel
ghrelin peptidomimetic tracer, an 18F-labeled analogue of G-7039, for positron
emission tomography (PET) imaging of cardiac GHSR1a. In vitro analysis showed enhanced
serum stability compared to natural ghrelin and significantly increased cellular uptake in
GHSR1a-expressing OVCAR cells. Biodistribution studies in mice showed that tissue uptake
of the tracer was independent of circulating ghrelin levels, and there was negligible
cardiac uptake and high uptake in the liver, intestines, and kidneys. Specificity of
tracer uptake was assessed using ghsr −/− mice; both static and dynamic PET imaging revealed no difference in cardiac
uptake, and there was no significant correlation between cardiac standardized uptake
values and GHSR1a expression. Our study lays the groundwork for further refinement of
peptidomimetic PET tracers targeting cardiac GHSR1a.
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Affiliation(s)
- Ahmed Abbas
- 1 Department of Medical Biophysics, Western University, London, Ontario, Canada
| | - Lihai Yu
- 2 Department of Chemistry, Western University, London, Ontario, Canada
| | - Tyler Lalonde
- 2 Department of Chemistry, Western University, London, Ontario, Canada
| | - Derek Wu
- 3 Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada
| | - Jonathan D Thiessen
- 1 Department of Medical Biophysics, Western University, London, Ontario, Canada.,4 Imaging Research, Lawson Health Research Institute, London, Ontario, Canada
| | - Leonard G Luyt
- 2 Department of Chemistry, Western University, London, Ontario, Canada.,4 Imaging Research, Lawson Health Research Institute, London, Ontario, Canada.,5 Department of oncology, Western University, London, Ontario, Canada
| | - Savita Dhanvantari
- 1 Department of Medical Biophysics, Western University, London, Ontario, Canada.,3 Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada.,4 Imaging Research, Lawson Health Research Institute, London, Ontario, Canada.,6 Metabolism/Diabetes, Lawson Health Research Institute, London, Ontario, Canada
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37
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Räder AFB, Weinmüller M, Reichart F, Schumacher-Klinger A, Merzbach S, Gilon C, Hoffman A, Kessler H. Orally Active Peptides: Is There a Magic Bullet? Angew Chem Int Ed Engl 2018; 57:14414-14438. [DOI: 10.1002/anie.201807298] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Andreas F. B. Räder
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | - Michael Weinmüller
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | - Florian Reichart
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | | | - Shira Merzbach
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Chaim Gilon
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Amnon Hoffman
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Horst Kessler
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
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38
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Räder AFB, Weinmüller M, Reichart F, Schumacher-Klinger A, Merzbach S, Gilon C, Hoffman A, Kessler H. Oral aktive Peptide: Gibt es ein Patentrezept? Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807298] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andreas F. B. Räder
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Michael Weinmüller
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Florian Reichart
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | | | - Shira Merzbach
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Chaim Gilon
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Amnon Hoffman
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Horst Kessler
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
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39
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Lewicky JD, Martel AL, Fraleigh NL, Boraman A, Nguyen TMD, Schiller PW, Shiao TC, Roy R, Le HT. Strengthening peptide-based drug activity with novel glyconanoparticle. PLoS One 2018; 13:e0204472. [PMID: 30260999 PMCID: PMC6160049 DOI: 10.1371/journal.pone.0204472] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/07/2018] [Indexed: 12/14/2022] Open
Abstract
The therapeutic application of peptide-based drugs is significantly limited by the rapid proteolytic degradation that occurs when in blood. Encapsulation of these peptide structures within a delivery system, such as liposomes, can greatly improve both stability and target delivery. As part of our work focused on novel ambiphilic mannosylated neoglycolipids as targeted drug delivery systems, we have developed a C14-alkyl-mannopyranoside that forms self-assembled monodisperse liposomes. Herein, these glycoliposomes are investigated as a potential method to improve the plasma stability of peptide-based drugs. Reversed phase high-performance liquid chromatography (RP-HPLC) and mass spectrometry (MS) methods were developed to assess the in vitro plasma stability of two structurally diverse peptides, including the kappa opioid receptor selective antagonist dynantin, and the NOD2 innate immune receptor ligand muramyl dipeptide (MDP). The RP-HPLC methods developed were able to resolve the peptides from background plasma contaminants and provided suitable response levels and linearity over an appropriate concentration range. Both compounds were found to be significantly degraded in rat plasma. Increasing degrees of both entrapment and stabilization were noted when dynantin was combined with the C14-alkyl-mannopyranoside in increasing peptide:glycoside ratios. The combination of MDP with the glycolipid also led to peptide entrapment, which greatly improved the plasma stability of the peptide. Overall, the results clearly indicate that the stability of peptide-based structures, which are subject to degradation in plasma, can be greatly improved via entrapment within C14-alkyl-mannopyranoside-bearing glycoliposomes.
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Affiliation(s)
| | | | - Nya L. Fraleigh
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
| | - Amanda Boraman
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
| | - Thi M.-D. Nguyen
- Laboratory of Chemical Biology and Peptide Research, Clinical Research Institute of Montreal, Montreal, Quebec, Canada
| | - Peter W. Schiller
- Laboratory of Chemical Biology and Peptide Research, Clinical Research Institute of Montreal, Montreal, Quebec, Canada
- Department of Pharmacology and Physiology, University of Montreal, Montreal, Quebec, Canada
| | | | - René Roy
- Glycovax Pharma Inc., Montreal, Quebec, Canada
| | - Hoang-Thanh Le
- Health Sciences North Research Institute, Sudbury, Ontario, Canada
- Northern Ontario School of Medicine, Medicinal Sciences Division, Sudbury, Ontario, Canada
- Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario, Canada
- Department of Biology, Laurentian University, Sudbury, Ontario, Canada
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40
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Hassanvand Jamadi R, Yaghoubi H, Sadeghizadeh M. Brevinin-2R and Derivatives as Potential Anticancer Peptides: Synthesis, Purification, Characterization and Biological Activities. Int J Pept Res Ther 2017. [DOI: 10.1007/s10989-017-9656-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Rogers JR, McHugh SM, Lin YS. Predictions for α-Helical Glycopeptide Design from Structural Bioinformatics Analysis. J Chem Inf Model 2017; 57:2598-2611. [DOI: 10.1021/acs.jcim.7b00123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Julia R. Rogers
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Sean M. McHugh
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Yu-Shan Lin
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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42
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Bennink LL, Smith DJ, Foss CA, Pomper MG, Li Y, Yu SM. High Serum Stability of Collagen Hybridizing Peptides and Their Fluorophore Conjugates. Mol Pharm 2017; 14:1906-1915. [PMID: 28445649 PMCID: PMC8063002 DOI: 10.1021/acs.molpharmaceut.7b00009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Collagen hybridizing peptides (CHPs) have a great potential for use in targeted drug delivery, diagnostics, and regenerative medicine due to their ability to specifically bind to denatured collagens associated with many pathologic conditions. Since peptides generally suffer from poor enzymatic stability, resulting in rapid degradation and elimination in vivo, CHP's serum stability is a critical parameter that may dictate its pharmacokinetic behavior. Here, we report the serum stability of a series of monomeric CHP derivatives and establish how peptide length, amino acid composition, terminal modification, and linker chemistry influence their availability in serum. We show that monomeric CHPs comprised of the collagen-like Gly-Pro-Hyp motif are resistant to common serum proteinases and that their stability can be further increased by simple N-terminal labeling which negates CHP's susceptibility to proline-specific exopeptidases. When fluorescent dyes are conjugated to a CHP via maleimide-thiol reaction, the dye can transfer from CHP onto serum proteins (e.g., albumin), resulting in an unexpected drop in signal during serum stability assays and off-target accumulation during in vivo tests. This work is the crucial first step toward understanding the pharmacokinetic behavior of CHPs, which can facilitate the development of CHP-based theranostics.
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Affiliation(s)
- Lucas L. Bennink
- Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Daniel J. Smith
- Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Catherine A. Foss
- The Russel H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21228, United States
| | - Martin G. Pomper
- The Russel H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21228, United States
| | - Yang Li
- Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - S. Michael Yu
- Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, United States
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
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43
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Takayama K, Mori K, Tanaka A, Nomura E, Sohma Y, Mori M, Taguchi A, Taniguchi A, Sakane T, Yamamoto A, Minamino N, Miyazato M, Kangawa K, Hayashi Y. Discovery of a Human Neuromedin U Receptor 1-Selective Hexapeptide Agonist with Enhanced Serum Stability. J Med Chem 2017; 60:5228-5234. [PMID: 28548497 DOI: 10.1021/acs.jmedchem.7b00694] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neuromedin U (NMU) activates two NMU receptors (NMUR1 and NMUR2) and is a useful antiobesity drug lead. We report discovery of a hexapeptide agonist, 2-thienylacetyl-Trp1-Phe(4-F)2-Arg3-Pro4-Arg5-Asn6-NH2 (4). However, the NMUR1 selectivity and serum stability of this agonist were unsatisfactory. Through a structure-activity relationship study focused on residue 2 of agonist 4, serum stability, and pharmacokinetic properties, we report here the discovery of a novel NMUR1 selective hexapeptide agonist 7b that suppresses body weight gain in mice.
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Affiliation(s)
- Kentaro Takayama
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kenji Mori
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute , 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Akiko Tanaka
- Department of Biopharmaceutics, Kyoto Pharmaceutical University , 5 Misasaginakauchi-cho, Yamashina, Kyoto 607-8414, Japan
| | - Erina Nomura
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yuko Sohma
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Miwa Mori
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute , 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Akihiro Taguchi
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Atsuhiko Taniguchi
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Toshiyasu Sakane
- Laboratory of Pharmaceutical Technology, Kobe Pharmaceutical University , 4-19-1 Motoyamakitamachi, Higashinada, Kobe, Hyogo 658-8558, Japan
| | - Akira Yamamoto
- Department of Biopharmaceutics, Kyoto Pharmaceutical University , 5 Misasaginakauchi-cho, Yamashina, Kyoto 607-8414, Japan
| | - Naoto Minamino
- Omics Research Center, National Cerebral and Cardiovascular Center , 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Mikiya Miyazato
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute , 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Kenji Kangawa
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute , 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan
| | - Yoshio Hayashi
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences , 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
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44
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Chu DS, Sellers DL, Bocek MJ, Fischedick AE, Horner PJ, Pun SH. MMP9-sensitive polymers mediate environmentally-responsive bivalirudin release and thrombin inhibition. Biomater Sci 2016; 3:41-5. [PMID: 25589953 DOI: 10.1039/c4bm00259h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
MMP9-responsive bivalirudin-HPMA copolymers were synthesized for direct, local administration in rat spinal cord contusion injury models. Polymer-conjugated bivalirudin peptides maintained activity while demonstrating enzyme-mediated release upon MMP9 exposure and prolonged release from hyaluronic acid/methylcellulose (HAMC) hydrogels compared to free bivalirudin peptide. Localized administration of bivalirudin copolymers in vivo at the site of rat spinal cord injury decreased cellular proliferation and astrogliosis, suggesting the bivalirudin copolymer and HAMC hydrogel system are a promising therapeutic intervention for reducing immediate inflammatory responses and long term scarring.
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Affiliation(s)
- D S Chu
- Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - D L Sellers
- Department of Neurological Surgery and Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98195, USA
| | - M J Bocek
- Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - A E Fischedick
- Department of Neurological Surgery and Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98195, USA
| | - P J Horner
- Department of Neurological Surgery and Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA 98195, USA
| | - S H Pun
- Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
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45
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Wang S, Blois A, El Rayes T, Liu JF, Hirsch MS, Gravdal K, Palakurthi S, Bielenberg DR, Akslen LA, Drapkin R, Mittal V, Watnick RS. Development of a prosaposin-derived therapeutic cyclic peptide that targets ovarian cancer via the tumor microenvironment. Sci Transl Med 2016; 8:329ra34. [PMID: 26962158 DOI: 10.1126/scitranslmed.aad5653] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The vast majority of ovarian cancer-related deaths are caused by metastatic dissemination of tumor cells, resulting in subsequent organ failure. However, despite our increased understanding of the physiological processes involved in tumor metastasis, there are no clinically approved drugs that have made a major impact in increasing the overall survival of patients with advanced, metastatic ovarian cancer. We identified prosaposin (psap) as a potent inhibitor of tumor metastasis, which acts via stimulation of p53 and the antitumorigenic protein thrombospondin-1 (TSP-1) in bone marrow-derived cells that are recruited to metastatic sites. We report that more than 97% of human serous ovarian tumors tested express CD36, the receptor that mediates the proapoptotic activity of TSP-1. Accordingly, we sought to determine whether a peptide derived from psap would be effective in treating this form of ovarian cancer. To that end, we developed a cyclic peptide with drug-like properties derived from the active sequence in psap. The cyclic psap peptide promoted tumor regression in a patient-derived tumor xenograft model of metastatic ovarian cancer. Thus, we hypothesize that a therapeutic agent based on this psap peptide would have efficacy in treating patients with metastatic ovarian cancer.
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Affiliation(s)
- Suming Wang
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA. Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Anna Blois
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA. Department of Surgery, Harvard Medical School, Boston, MA 02115, USA. Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, University of Bergen, NO-5020 Bergen, Norway
| | - Tina El Rayes
- Department of Cardiothoracic Surgery, Weill Cornell Medical College, New York, NY 10065, USA. Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY 10065, USA. Neuberger Berman Lung Cancer Center, Weill Cornell Medical College, New York, NY 10065, USA
| | - Joyce F Liu
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Michelle S Hirsch
- Department of Pathology, Harvard Medical School, Boston, MA 02115, USA
| | - Karsten Gravdal
- Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, University of Bergen, NO-5020 Bergen, Norway. Department of Pathology, Haukeland University Hospital, N-5021 Bergen, Norway
| | - Sangeetha Palakurthi
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Diane R Bielenberg
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA. Department of Surgery, Harvard Medical School, Boston, MA 02115, USA
| | - Lars A Akslen
- Centre for Cancer Biomarkers (CCBIO), Department of Clinical Medicine, University of Bergen, NO-5020 Bergen, Norway. Department of Pathology, Haukeland University Hospital, N-5021 Bergen, Norway
| | - Ronny Drapkin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02115, USA. Department of Pathology, Harvard Medical School, Boston, MA 02115, USA
| | - Vivek Mittal
- Department of Cardiothoracic Surgery, Weill Cornell Medical College, New York, NY 10065, USA. Department of Cell and Developmental Biology, Weill Cornell Medical College, New York, NY 10065, USA. Neuberger Berman Lung Cancer Center, Weill Cornell Medical College, New York, NY 10065, USA
| | - Randolph S Watnick
- Vascular Biology Program, Boston Children's Hospital, Boston, MA 02115, USA. Department of Surgery, Harvard Medical School, Boston, MA 02115, USA.
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46
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Jadhav KB, Stein C, Makarewicz O, Pradel G, Lichtenecker RJ, Sack H, Heinemann SH, Arndt HD. Bioactivity of topologically confined gramicidin A dimers. Bioorg Med Chem 2016; 25:261-268. [PMID: 27865644 DOI: 10.1016/j.bmc.2016.10.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 10/21/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
Abstract
The d-/l-peptide gramicidin A (gA) is well known as a pivotal ion channel model and shows a broad spectrum of bioactivities such as antibiosis, antimalarial activity, as well as hemolysis. We applied inter-chain disulfide bonds to constrain the conformational freedom of gA into parallel and antiparallel dimeric topologies. Albeit the constructs were not found to be monoconformational, CD- and IR-spectroscopic studies suggested that this strategy indeed restricted the conformational space of the d-/l-peptide construct, and that β-helical secondary structures prevail. Correlative testing of gA dimers in antimicrobial, antimalarial, and ion conduction assays suggested that the tail-to-tail antiparallel single stranded β6.3 helix dominantly mediates the bioactivity of gA. Other conformers are unlikely to contribute to these activities. From these investigations, only weakly ion conducting gA dimers were identified that retained nM antimalarial activity.
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Affiliation(s)
- Kirtikumar B Jadhav
- Friedrich Schiller University Jena, Institute of Organic Chemistry and Macromolecular Chemistry, Humboldtstr. 10, D-07743 Jena, Germany
| | - Claudia Stein
- Center for Infectious Diseases and Infection Control, Jena University Hospital, Erlanger Allee 101, D-07747 Jena, Germany
| | - Oliwia Makarewicz
- Center for Infectious Diseases and Infection Control, Jena University Hospital, Erlanger Allee 101, D-07747 Jena, Germany
| | - Gabriele Pradel
- RWTH Aachen University, Division of Cellular and Applied Infection Biology, Worringerweg 1, D-52074 Aachen, Germany
| | - Roman J Lichtenecker
- Friedrich Schiller University Jena, Institute of Organic Chemistry and Macromolecular Chemistry, Humboldtstr. 10, D-07743 Jena, Germany
| | - Holger Sack
- Center for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena and Jena University Hospital, Hans-Knöll-Str. 2, D-07745 Jena, Germany
| | - Stefan H Heinemann
- Center for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena and Jena University Hospital, Hans-Knöll-Str. 2, D-07745 Jena, Germany
| | - Hans-Dieter Arndt
- Friedrich Schiller University Jena, Institute of Organic Chemistry and Macromolecular Chemistry, Humboldtstr. 10, D-07743 Jena, Germany.
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47
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Perreault A, Richter S, Bergman C, Wuest M, Wuest F. Targeting Phosphatidylserine with a 64Cu-Labeled Peptide for Molecular Imaging of Apoptosis. Mol Pharm 2016; 13:3564-3577. [DOI: 10.1021/acs.molpharmaceut.6b00666] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Amanda Perreault
- Department of Oncology, Cross
Cancer Institute, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 2X4, Canada
| | - Susan Richter
- Department of Oncology, Cross
Cancer Institute, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 2X4, Canada
| | - Cody Bergman
- Department of Oncology, Cross
Cancer Institute, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 2X4, Canada
| | - Melinda Wuest
- Department of Oncology, Cross
Cancer Institute, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 2X4, Canada
| | - Frank Wuest
- Department of Oncology, Cross
Cancer Institute, University of Alberta, 11560 University Avenue, Edmonton, Alberta T6G 2X4, Canada
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48
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Gilad Y, Firer M, Gellerman G. Recent Innovations in Peptide Based Targeted Drug Delivery to Cancer Cells. Biomedicines 2016; 4:E11. [PMID: 28536378 PMCID: PMC5344250 DOI: 10.3390/biomedicines4020011] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/16/2016] [Accepted: 05/23/2016] [Indexed: 12/21/2022] Open
Abstract
Targeted delivery of chemotherapeutics and diagnostic agents conjugated to carrier ligands has made significant progress in recent years, both in regards to the structural design of the conjugates and their biological effectiveness. The goal of targeting specific cell surface receptors through structural compatibility has encouraged the use of peptides as highly specific carriers as short peptides are usually non-antigenic, are structurally simple and synthetically diverse. Recent years have seen many developments in the field of peptide based drug conjugates (PDCs), particularly for cancer therapy, as their use aims to bypass off-target side-effects, reducing the morbidity common to conventional chemotherapy. However, no PDCs have as yet obtained regulatory approval. In this review, we describe the evolution of the peptide-based strategy for targeted delivery of chemotherapeutics and discuss recent innovations in the arena that should lead in the near future to their clinical application.
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Affiliation(s)
- Yosi Gilad
- Department of Chemical Sciences, Ariel University, Ariel 40700, Israel.
- Department of Chemical Engineering and Biotechnology, Ariel University, Ariel 40700, Israel.
| | - Michael Firer
- Department of Chemical Engineering and Biotechnology, Ariel University, Ariel 40700, Israel.
| | - Gary Gellerman
- Department of Chemical Sciences, Ariel University, Ariel 40700, Israel.
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Saludes JP, Gregar TQ, Monreal IA, Cook BM, Danan-Leon LM, Gervay-Hague J. Solution phase conformation and proteolytic stability of amide-linked neuraminic acid analogues. Biopolymers 2016; 99:686-96. [PMID: 23765412 DOI: 10.1002/bip.22315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 05/31/2013] [Indexed: 11/10/2022]
Abstract
Amide-linked homopolymers of sialic acid offer the advantages of stable secondary structure and increased bioavailability making them useful constructs for pharmaceutical design and drug delivery. Defining the structural characteristics that give rise to secondary structure in aqueous solution is challenging in homopolymeric material due to spectral overlap in NMR spectra. Having previously developed computational tools for heteroologomers with resolved spectra, we now report that application of these methods in combination with circular dichroism, NH/ND NMR exchange rates and nOe data has enabled the structural determination of a neutral, δ-amide-linked homopolymer of a sialic acid analogue called Neu2en. The results show that the inherent planarity of the pyranose ring in Neu2en brought about by the α,δ-conjugated amide bond serves as the primary driving force of the overall conformation of the homooligomer. This peptide surrogate has an excellent bioavailability profile, with half-life of ∼12 h in human blood serum, which offers a viable peptide scaffold that is resistant to proteolytic degradation. Furthermore, a proof-of-principle study illustrates that Neu2en oligomers are functionalizable with small molecule ligands using 1,3-dipolar cycloaddition chemistry.
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Affiliation(s)
- Jonel P Saludes
- Department of Chemistry, , University of California Davis, One Shields Ave., Davis, CA, 95616; Department of Chemistry, Washington State University, Pullman, WA, 99164
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Moradi SV, Hussein WM, Varamini P, Simerska P, Toth I. Glycosylation, an effective synthetic strategy to improve the bioavailability of therapeutic peptides. Chem Sci 2016; 7:2492-2500. [PMID: 28660018 PMCID: PMC5477030 DOI: 10.1039/c5sc04392a] [Citation(s) in RCA: 165] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/26/2016] [Indexed: 01/22/2023] Open
Abstract
Glycosylation of peptides is a promising strategy for modulating the physicochemical properties of peptide drugs and for improving their absorption through biological membranes. This review highlights various methods for the synthesis of glycoconjugates and recent progress in the development of glycosylated peptide therapeutics. Furthermore, the impacts of glycosylation in overcoming the existing barriers that restrict oral and brain delivery of peptides are described herein.
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Affiliation(s)
- Shayli Varasteh Moradi
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Waleed M Hussein
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Pegah Varamini
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Pavla Simerska
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Istvan Toth
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
- Institute for Molecular Bioscience , The University of Queensland , St. Lucia , QLD 4072 , Australia
- The University of Queensland , School of Pharmacy , Brisbane , QLD 4072 , Australia
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