1
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Speetjens FM, Welters MJP, Slingerland M, van Poelgeest MIE, de Vos van Steenwijk PJ, Roozen I, Boekestijn S, Loof NM, Zom GG, Valentijn ARPM, Krebber WJ, Meeuwenoord NJ, Janssen CAH, Melief CJM, van der Marel GA, Filippov DV, van der Burg SH, Gelderblom H, Ossendorp F. Intradermal vaccination of HPV-16 E6 synthetic peptides conjugated to an optimized Toll-like receptor 2 ligand shows safety and potent T cell immunogenicity in patients with HPV-16 positive (pre-)malignant lesions. J Immunother Cancer 2022; 10:jitc-2022-005016. [PMID: 36261215 PMCID: PMC9582304 DOI: 10.1136/jitc-2022-005016] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Amplivant is a molecularly optimized Toll-like receptor 2 ligand that can be covalently conjugated to tumor peptide antigens. In preclinical models, amplivant-adjuvanted synthetic long peptides (SLPs) strongly enhanced antigen presentation by dendritic cells, T cell priming and induction of effective antitumor responses. The current study is a first-in-human trial to investigate safety and immunogenicity of amplivant conjugated to human papillomavirus (HPV) 16-SLP. METHODS A dose escalation phase I vaccination trial was performed in 25 patients treated for HPV16 positive (pre-)malignant lesions. Amplivant was conjugated to two SLPs derived from the two most immunodominant regions of the HPV16 E6 oncoprotein. The vaccine, containing a mix of these two conjugates in watery solution without any other formulation, was injected intradermally three times with a 3-week interval in four dose groups (1, 5, 20 or 50 µg per conjugated peptide). Safety data were collected during the study. Peptide-specific T cell immune responses were determined in blood samples taken before, during and after vaccination using complementary immunological assays. RESULTS Toxicity after three amplivant-conjugated HPV16-SLP vaccinations was limited to grade 1 or 2, observed as predominantly mild skin inflammation at the vaccination site and sometimes mild flu-like symptoms. Adverse events varied from none in the lowest dose group to mild/moderate vaccine-related inflammation in all patients and flu-like symptoms in three out of seven patients in the highest dose group, after at least one injection. In the lowest dose group, vaccine-induced T cell responses were observed in the blood of three out of six vaccinated persons. In the highest dose group, all patients displayed a strong HPV16-specific T cell response after vaccination. These HPV16-specific T cell responses lasted until the end of the trial. CONCLUSIONS Amplivant-conjugated SLPs can safely be used as an intradermal therapeutic vaccine to induce robust HPV16-specific T cell immunity in patients previously treated for HPV16 positive (pre-) malignancies. Increased vaccine dose was associated with a higher number of mild adverse events and with stronger systemic T cell immunity. TRIAL REGISTRATION NUMBERS NCT02821494 and 2014-000658-12.
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Affiliation(s)
- Frank M Speetjens
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Marij J P Welters
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, The Netherlands
| | - Marije Slingerland
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | | | | | - Inge Roozen
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Sanne Boekestijn
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, The Netherlands
| | - Nikki M Loof
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, The Netherlands
| | - Gijs G Zom
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands
| | - A Rob P M Valentijn
- Department of Clinical Pharmacy and Toxicology, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Nico J Meeuwenoord
- Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | | | | | | | - Dmitri V Filippov
- Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Sjoerd H van der Burg
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Hans Gelderblom
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ferry Ossendorp
- Department of Immunology, Leiden University Medical Center, Leiden, The Netherlands
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2
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Liu Q, Knobloch G, Voorneveld J, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Ladurner AG, Filippov DV. Chemical synthesis of linear ADP-ribose oligomers up to pentamer and their binding to the oncogenic helicase ALC1. Chem Sci 2021; 12:12468-12475. [PMID: 34603678 PMCID: PMC8480336 DOI: 10.1039/d1sc02340c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 08/12/2021] [Indexed: 11/21/2022] Open
Abstract
ADP-ribosylation is a pivotal post-translational modification that mediates various important cellular processes producing negatively charged biopolymer, poly (ADP-ribose), the functions of which need further elucidation. Toward this end, the availability of well-defined ADP-ribose (ADPr) oligomers in sufficient quantities is a necessity. In this work, we demonstrate the chemical synthesis of linear ADPr oligomers of defined, increasing length using a modified solid phase synthesis method. An advanced phosphoramidite building block temporarily protected with the base sensitive Fm-group was designed and implemented in the repeating pyrophosphate formation via a P(v)-P(iii) coupling procedure on Tentagel solid support. Linear ADPr oligomers up to a pentamer were successfully synthesized and their affinity for the poly-(ADP-ribose)-binding macrodomain of the human oncogenic helicase and chromatin remodeling enzyme ALC1 was determined. Our data reveal a length-dependent binding manner of the nucleic acid, with larger ADPr oligomers exhibiting higher binding enthalpies for ALC1, illustrating how the activity of this molecular machine is gated by PAR.
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Affiliation(s)
- Qiang Liu
- Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Gunnar Knobloch
- Biomedical Center (BMC), Physiological Chemistry, Faculty of Medicine LMU Munich 82152 Planegg-Martinsried Germany
| | - Jim Voorneveld
- Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Nico J Meeuwenoord
- Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
| | | | - Andreas G Ladurner
- Biomedical Center (BMC), Physiological Chemistry, Faculty of Medicine LMU Munich 82152 Planegg-Martinsried Germany
- Eisbach Bio GmbH Am Klopferspitz 19, Planegg-Martinsried 82152 Germany
| | - Dmitri V Filippov
- Leiden Institute of Chemistry, Leiden University P.O. Box 9502 2300 RA Leiden The Netherlands
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3
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Voorneveld J, Rack JGM, van Gijlswijk L, Meeuwenoord NJ, Liu Q, Overkleeft HS, van der Marel GA, Ahel I, Filippov DV. Molecular Tools for the Study of ADP-Ribosylation: A Unified and Versatile Method to Synthesise Native Mono-ADP-Ribosylated Peptides. Chemistry 2021; 27:10621-10627. [PMID: 33769608 PMCID: PMC8360141 DOI: 10.1002/chem.202100337] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Indexed: 01/13/2023]
Abstract
ADP-ribosylation (ADPr), as a post-translational modification, plays a crucial role in DNA-repair, immunity and many other cellular and physiological processes. Serine is the main acceptor for ADPr in DNA damage response, whereas the physiological impact of less common ADPr-modifications of cysteine and threonine side chains is less clear. Generally, gaining molecular insights into ADPr recognition and turn-over is hampered by the availability of homogeneous, ADP-ribosylated material, such as mono-ADP-ribosylated (MARylated) peptides. Here, a new and efficient solid-phase strategy for the synthesis of Ser-, Thr- and Cys-MARylated peptides is described. ADP-ribosylated cysteine, apart from being a native post-translational modification in its own right, proved to be suitable as a stabile bioisostere for ADP-ribosylated serine making it a useful tool to further biochemical research on serine ADP-ribosylation. In addition, it was discovered that the Streptococcus pyogenes encoded protein, SpyMacroD, acts as a Cys-(ADP-ribosyl) hydrolase.
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Affiliation(s)
- Jim Voorneveld
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | | | - Luke van Gijlswijk
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | - Qiang Liu
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | - Gijsbert A. van der Marel
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
| | - Ivan Ahel
- Sir William Dunn School of PathologyUniversity of OxfordSouth Parks RoadOxfordOX1 3REUnited Kingdom
| | - Dmitri V. Filippov
- Leiden Institute of ChemistryLeiden UniversityDepartment of Bioorganic SynthesisEinsteinweg 552333CCLeidenThe Netherlands
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4
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Reintjens NRM, Tondini E, Vis C, McGlinn T, Meeuwenoord NJ, Hogervorst TP, Overkleeft HS, Filippov DV, van der Marel GA, Ossendorp F, Codée JDC. Multivalent, Stabilized Mannose-6-Phosphates for the Targeted Delivery of Toll-Like Receptor Ligands and Peptide Antigens. Chembiochem 2021; 22:434-440. [PMID: 32864819 PMCID: PMC7894537 DOI: 10.1002/cbic.202000538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/29/2020] [Indexed: 02/03/2023]
Abstract
Mannose-6-phosphate (M6P) is recognized by the mannose-6-phosphate receptor and plays an important role in the transport of cargo to the endosomes, making it an attractive tool to improve endosomal trafficking of vaccines. We describe herein the assembly of peptide antigen conjugates carrying clusters of mannose-6-C-phosphonates (M6Po). The M6Po's are stable M6P mimics that are resistant to cleavage of the phosphate group by endogenous phosphatases. Two different strategies for the incorporation of the M6Po clusters in the conjugate have been developed: the first relies on a "post-assembly" click approach employing an M6Po bearing an alkyne functionality; the second hinges on an M6Po C-glycoside amino acid building block that can be used in solid-phase peptide synthesis. The generated conjugates were further equipped with a TLR7 ligand to stimulate dendritic cell (DC) maturation. While antigen presentation is hindered by the presence of the M6Po clusters, the incorporation of the M6Po clusters leads to increased activation of DCs, thus demonstrating their potential in improving vaccine adjuvanticity by intraendosomally active TLR ligands.
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Affiliation(s)
- Niels R. M. Reintjens
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Elena Tondini
- Department of ImmunologyLeiden University Medical CenterLeiden UniversityAlbinusdreef 22333 ZALeidenNetherlands
| | - Christopher Vis
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Toroa McGlinn
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Tim P. Hogervorst
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Herman S. Overkleeft
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | - Dmitri V. Filippov
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
| | | | - Ferry Ossendorp
- Department of ImmunologyLeiden University Medical CenterLeiden UniversityAlbinusdreef 22333 ZALeidenNetherlands
| | - Jeroen D. C. Codée
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenNetherlands
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5
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van den Ende TC, Heuts JMM, Gential GPP, Visser M, van de Graaff MJ, Ho NI, Jiskoot W, Valentijn ARPM, Meeuwenoord NJ, Overkleeft HS, Codée JDC, van der Burg SH, Verdegaal EME, van der Marel GA, Ossendorp F, Filippov DV. Simplified Monopalmitoyl Toll-like Receptor 2 Ligand Mini-UPam for Self-Adjuvanting Neoantigen-Based Synthetic Cancer Vaccines. Chembiochem 2020; 22:1215-1222. [PMID: 33180981 PMCID: PMC8049070 DOI: 10.1002/cbic.202000687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 11/04/2020] [Indexed: 12/14/2022]
Abstract
Synthetic vaccines, based on antigenic peptides that comprise MHC-I and MHC-II T-cell epitopes expressed by tumors, show great promise for the immunotherapy of cancer. For optimal immunogenicity, the synthetic peptides (SPs) should be adjuvanted with suitable immunostimulatory additives. Previously, we have shown that improved immunogenicity in vivo is obtained with vaccine modalities in which an SP is covalently connected to an adjuvanting moiety, typically a ligand to Toll-like receptor 2 (TLR2). SPs were covalently attached to UPam, which is a derivative of the classic TLR2 ligand Pam3 CysSK4 . A disadvantage of the triply palmitoylated UPam is its high lipophilicity, which precludes universal adoption of this adjuvant for covalent modification of various antigenic peptides as it renders the synthetic vaccine insoluble in several cases. Here, we report a novel conjugatable TLR2 ligand, mini-UPam, which contains only one palmitoyl chain, rather than three, and therefore has less impact on the solubility and other physicochemical properties of a synthetic peptide. In this study, we used SPs that contain the clinically relevant neoepitopes identified in a melanoma patient who completely recovered after T-cell therapy. Homogeneous mini-UPam-SP conjugates have been prepared in good yields by stepwise solid-phase synthesis that employed a mini-UPam building block pre-prepared in solution and the standard set of Fmoc-amino acids. The immunogenicity of the novel mini-UPam-SP conjugates was demonstrated by using the cancer patient's T-cells.
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Affiliation(s)
- Thomas C van den Ende
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Jeroen M M Heuts
- Department of Immunology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Geoffroy P P Gential
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Marten Visser
- Department of Medical Oncology and Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Michel J van de Graaff
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Nataschja I Ho
- Department of Immunology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Wim Jiskoot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - A Rob P M Valentijn
- Clinical Pharmacy and Toxicology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Nico J Meeuwenoord
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Sjoerd H van der Burg
- Department of Medical Oncology and Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Els M E Verdegaal
- Department of Medical Oncology and Oncode Institute, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
| | - Ferry Ossendorp
- Department of Immunology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Dmitri V Filippov
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
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6
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Reintjens NRM, Tondini E, de Jong AR, Meeuwenoord NJ, Chiodo F, Peterse E, Overkleeft HS, Filippov DV, van der Marel GA, Ossendorp F, Codée JDC. Self-Adjuvanting Cancer Vaccines from Conjugation-Ready Lipid A Analogues and Synthetic Long Peptides. J Med Chem 2020; 63:11691-11706. [PMID: 32960056 PMCID: PMC7586330 DOI: 10.1021/acs.jmedchem.0c00851] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
![]()
Self-adjuvanting
vaccines, wherein an antigenic
peptide is covalently bound to an immunostimulating agent, have been
shown to be promising tools for immunotherapy. Synthetic Toll-like
receptor (TLR) ligands are ideal adjuvants for covalent linking to
peptides or proteins. We here introduce a conjugation-ready TLR4 ligand,
CRX-527, a potent powerful lipid A analogue, in the generation of
novel conjugate-vaccine modalities. Effective chemistry has been developed
for the synthesis of the conjugation-ready ligand as well as the connection
of it to the peptide antigen. Different linker systems and connection
modes to a model peptide were explored, and in vitro evaluation of the conjugates showed them to be powerful immune-activating
agents, significantly more effective than the separate components.
Mounting the CRX-527 ligand at the N-terminus of the model peptide
antigen delivered a vaccine modality that proved to be potent in activation
of dendritic cells, in facilitating antigen presentation, and in initiating
specific CD8+ T-cell-mediated killing of antigen-loaded
target cells in vivo. Synthetic TLR4 ligands thus
show great promise in potentiating the conjugate vaccine platform
for application in cancer vaccination.
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Affiliation(s)
- Niels R M Reintjens
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Elena Tondini
- Department of Immunology, Leiden University Medical Center, Leiden University, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Ana R de Jong
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Nico J Meeuwenoord
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Fabrizio Chiodo
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.,Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam 1081 HZ, The Netherlands
| | - Evert Peterse
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Herman S Overkleeft
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Dmitri V Filippov
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Ferry Ossendorp
- Department of Immunology, Leiden University Medical Center, Leiden University, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Jeroen D C Codée
- Bio-organic Synthesis, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
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7
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Reintjens NRM, Koemans TS, Zilverschoon N, Castelli R, Cordfunke RA, Drijfhout JW, Meeuwenoord NJ, Overkleeft HS, Filippov DV, Marel GA, Codée JDC. Synthesis of
C
‐Glycosyl Amino Acid Building Blocks Suitable for the Solid‐Phase Synthesis of Multivalent Glycopeptide Mimics. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Niels R. M. Reintjens
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Tony S. Koemans
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Nick Zilverschoon
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Riccardo Castelli
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Robert A. Cordfunke
- Dept. of Immunohematology and Blood Transfusion Leiden University Medical Center Leiden University Albinusdreef 2 2333 ZA Leiden The Netherlands
| | - Jan Wouter Drijfhout
- Dept. of Immunohematology and Blood Transfusion Leiden University Medical Center Leiden University Albinusdreef 2 2333 ZA Leiden The Netherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Dmitri V. Filippov
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Gijsbert A. Marel
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
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8
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Hogervorst TP, Li RJE, Marino L, Bruijns SCM, Meeuwenoord NJ, Filippov DV, Overkleeft HS, van der Marel GA, van Vliet SJ, van Kooyk Y, Codée JDC. C-Mannosyl Lysine for Solid Phase Assembly of Mannosylated Peptide Conjugate Cancer Vaccines. ACS Chem Biol 2020; 15:728-739. [PMID: 32045202 PMCID: PMC7091534 DOI: 10.1021/acschembio.9b00987] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Dendritic
cells (DCs) are armed with a multitude of Pattern Recognition
Receptors (PRRs) to recognize pathogens and initiate pathogen-tailored
T cell responses. In these responses, the maturation of DCs is key,
as well as the production of cytokines that help to accomplish T cell
responses. DC-SIGN is a frequently exploited PRR that can effectively
be targeted with mannosylated antigens to enhance the induction of
antigen-specific T cells. The natural O-mannosidic
linkage is susceptible to enzymatic degradation, and its chemical
sensitivity complicates the synthesis of mannosylated antigens. For
this reason, (oligo)mannosides are generally introduced in a late
stage of the antigen synthesis, requiring orthogonal conjugation handles
for their attachment. To increase the stability of the mannosides
and streamline the synthesis of mannosylated peptide antigens, we
here describe the development of an acid-stable C-mannosyl lysine, which allows for the inline introduction of mannosides
during solid-phase peptide synthesis (SPPS). The developed amino acid
has been successfully used for the assembly of both small ligands
and peptide antigen conjugates comprising an epitope of the gp100
melanoma-associated antigen and a TLR7 agonist for DC activation.
The ligands showed similar internalization capacities and binding
affinities as the O-mannosyl analogs. Moreover, the
antigen conjugates were capable of inducing maturation, stimulating
the secretion of pro-inflammatory cytokines, and providing enhanced
gp100 presentation to CD8+ and CD4+ T cells,
similar to their O-mannosyl counterparts. Our results
demonstrate that the C-mannose lysine is a valuable
building block for the generation of anticancer peptide-conjugate
vaccine modalities.
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Affiliation(s)
- Tim P. Hogervorst
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - R. J. Eveline Li
- Amsterdam UMC-Location Vrije Universiteit Amsterdam, Deptartment of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Laura Marino
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Sven C. M. Bruijns
- Amsterdam UMC-Location Vrije Universiteit Amsterdam, Deptartment of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Nico J. Meeuwenoord
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Dmitri V. Filippov
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Herman S. Overkleeft
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Gijsbert A. van der Marel
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
| | - Sandra J. van Vliet
- Amsterdam UMC-Location Vrije Universiteit Amsterdam, Deptartment of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Yvette van Kooyk
- Amsterdam UMC-Location Vrije Universiteit Amsterdam, Deptartment of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam, Netherlands
| | - Jeroen D. C. Codée
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, The Netherlands
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9
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Zurlo E, Gorroño Bikandi I, Meeuwenoord NJ, Filippov DV, Huber M. Tracking amyloid oligomerization with monomer resolution using a 13-amino acid peptide with a backbone-fixed spin label. Phys Chem Chem Phys 2019; 21:25187-25195. [PMID: 31696167 DOI: 10.1039/c9cp01060b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Amyloid oligomers are suspected as toxic agents in neurodegenerative disease, and are transient and often heterogeneous, making them difficult to detect. Here we show an approach to track the development of amyloid oligomers in situ by room temperature, continuous wave (cw) 9 and 95 GHz EPR. Three amyloid peptides with the 2,2,6,6-tetramethyl-N-oxyl-4-amino-4-carboxylic acid (TOAC) spin label were synthesized by solid phase peptide synthesis: T0EZ (TKVKVLGDVIEVGG) with TOAC (T) at the N-terminus, T5EZ with TOAC in the middle (KVKVTGDVIEVG) and T12EZ with TOAC at the C-terminus (KVKVLGDVIEVTG). These sequences are derived from the K11V (KVKVLGDVIEV) amyloid peptide, which self-aggregates to oligomers with a β-sheet configuration (A. Laganowsky, et al., Science, 2012, 335, 1228-1231). To monitor oligomerization, the rotational correlation time (τr) is measured by cw-EPR. For the backbone-fixed TOAC label that is devoid of local mobility τr should reflect the rotation and thereby the size of the peptide, resp. oligomer. For T5EZ a good match between the measured τr and the size of the peptide is obtained, showing the validity of the approach. One of the three peptides (T0EZ) aggregates (circular dichroism), whereas the other two do not. Since also the respective MTSL (S-(1-oxyl-2,2,5,5-tetramethyl-2,5-dihydro-1H-pyrrol-3-yl)methyl methanesulfonothioate) labelled peptides fail to aggregate, molecular crowding due to the label, rather than the helix-inducing properties of TOAC, seems to be responsible. Following in situ oligomer formation of T0EZ by the change in rotational correlation time, two oligomers are observed, a 5-6 mer and a 15-18 mer. The EPR approach, particularly 95 GHz EPR, enables following oligomerization of one monomer at a time, suggesting that the cw-EPR approach presented is a novel tool to follow amyloid oligomerization with high resolution.
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Affiliation(s)
- E Zurlo
- Department of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, The Netherlands.
| | - I Gorroño Bikandi
- Department of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, The Netherlands.
| | - N J Meeuwenoord
- Leiden Institute of Chemistry, Gorlaeus Laboratoria, Leiden University, 2300 RA Leiden, The Netherlands
| | - D V Filippov
- Leiden Institute of Chemistry, Gorlaeus Laboratoria, Leiden University, 2300 RA Leiden, The Netherlands
| | - M Huber
- Department of Physics, Huygens-Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, The Netherlands.
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10
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Li RJE, Hogervorst TP, Achilli S, Bruijns SC, Arnoldus T, Vivès C, Wong CC, Thépaut M, Meeuwenoord NJ, van den Elst H, Overkleeft HS, van der Marel GA, Filippov DV, van Vliet SJ, Fieschi F, Codée JDC, van Kooyk Y. Systematic Dual Targeting of Dendritic Cell C-Type Lectin Receptor DC-SIGN and TLR7 Using a Trifunctional Mannosylated Antigen. Front Chem 2019; 7:650. [PMID: 31637232 PMCID: PMC6787163 DOI: 10.3389/fchem.2019.00650] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/11/2019] [Indexed: 01/22/2023] Open
Abstract
Dendritic cells (DCs) are important initiators of adaptive immunity, and they possess a multitude of Pattern Recognition Receptors (PRR) to generate an adequate T cell mediated immunity against invading pathogens. PRR ligands are frequently conjugated to tumor-associated antigens in a vaccination strategy to enhance the immune response toward such antigens. One of these PPRs, DC-SIGN, a member of the C-type lectin receptor (CLR) family, has been extensively targeted with Lewis structures and mannose glycans, often presented in multivalent fashion. We synthesized a library of well-defined mannosides (mono-, di-, and tri-mannosides), based on known "high mannose" structures, that we presented in a systematically increasing number of copies (n = 1, 2, 3, or 6), allowing us to simultaneously study the effect of mannoside configuration and multivalency on DC-SIGN binding via Surface Plasmon Resonance (SPR) and flow cytometry. Hexavalent presentation of the clusters showed the highest binding affinity, with the hexa-α1,2-di-mannoside being the most potent ligand. The four highest binding hexavalent mannoside structures were conjugated to a model melanoma gp100-peptide antigen and further equipped with a Toll-like receptor 7 (TLR7)-agonist as adjuvant for DC maturation, creating a trifunctional vaccine conjugate. Interestingly, DC-SIGN affinity of the mannoside clusters did not directly correlate with antigen presentation enhancing properties and the α1,2-di-mannoside cluster with the highest binding affinity in our library even hampered T cell activation. Overall, this systematic study has demonstrated that multivalent glycan presentation can improve DC-SIGN binding but enhanced binding cannot be directly translated into enhanced antigen presentation and the sole assessment of binding affinity is thus insufficient to determine further functional biological activity. Furthermore, we show that well-defined antigen conjugates combining two different PRR ligands can be generated in a modular fashion to increase the effectiveness of vaccine constructs.
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Affiliation(s)
- Rui-Jun Eveline Li
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Tim P. Hogervorst
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Silvia Achilli
- Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France
| | - Sven C. Bruijns
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Tim Arnoldus
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Corinne Vivès
- Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France
| | - Chung C. Wong
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Michel Thépaut
- Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France
| | - Nico J. Meeuwenoord
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Hans van den Elst
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Herman S. Overkleeft
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Gijs A. van der Marel
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Dmitri V. Filippov
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Sandra J. van Vliet
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Franck Fieschi
- Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France
| | - Jeroen D. C. Codée
- Department of Bio-organic Synthesis, Faculty of Science, Leiden Institute of Chemistry, Leiden University, Leiden, Netherlands
| | - Yvette van Kooyk
- Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam, Amsterdam Infection and Immunity Institute, Amsterdam Universitair Medische Centra, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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11
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Zom GG, Willems MMJHP, Meeuwenoord NJ, Reintjens NRM, Tondini E, Khan S, Overkleeft HS, van der Marel GA, Codee JDC, Ossendorp F, Filippov DV. Dual Synthetic Peptide Conjugate Vaccine Simultaneously Triggers TLR2 and NOD2 and Activates Human Dendritic Cells. Bioconjug Chem 2019; 30:1150-1161. [PMID: 30865430 DOI: 10.1021/acs.bioconjchem.9b00087] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Simultaneous triggering of Toll-like receptors (TLRs) and NOD-like receptors (NLRs) has previously been shown to synergistically activate monocytes, dendritic cells, and macrophages. We applied these properties in a T-cell vaccine setting by conjugating the NOD2-ligand muramyl-dipeptide (MDP) and TLR2-ligand Pam3CSK4 to a synthetic peptide derived from a model antigen. Stimulation of human DCs with the MDP-peptide-Pam3CSK4 conjugate led to a strongly increased secretion of pro-inflammatory and Th1-type cytokines and chemokines. We further show that the conjugated ligands retain their ability to trigger their respective receptors, while even improving NOD2-triggering. Also, activation of murine DCs was enhanced by the dual triggering, ultimately leading to effective induction of vaccine-specific T cells expressing IFNγ, IL-2, and TNFα. Together, these data indicate that the dual MDP-SLP-Pam3CSK4 conjugate constitutes a chemically well-defined vaccine approach that holds promise for the use in the treatment of virus infections and cancer.
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Affiliation(s)
- Gijs G Zom
- Department of Immunohematology and Blood Transfusion , Leiden University Medical Center , P.O. Box 9600, 2300 RC Leiden , The Netherlands
| | - Marian M J H P Willems
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Nico J Meeuwenoord
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Niels R M Reintjens
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Elena Tondini
- Department of Immunohematology and Blood Transfusion , Leiden University Medical Center , P.O. Box 9600, 2300 RC Leiden , The Netherlands
| | - Selina Khan
- Department of Immunohematology and Blood Transfusion , Leiden University Medical Center , P.O. Box 9600, 2300 RC Leiden , The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Jeroen D C Codee
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Ferry Ossendorp
- Department of Immunohematology and Blood Transfusion , Leiden University Medical Center , P.O. Box 9600, 2300 RC Leiden , The Netherlands
| | - Dmitri V Filippov
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
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12
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Araman C, van Gent ME, Meeuwenoord NJ, Heijmans N, Marqvorsen MHS, Doelman W, Faber BW, 't Hart BA, Van Kasteren SI. Amyloid-like Behavior of Site-Specifically Citrullinated Myelin Oligodendrocyte Protein (MOG) Peptide Fragments inside EBV-Infected B-Cells Influences Their Cytotoxicity and Autoimmunogenicity. Biochemistry 2019; 58:763-775. [PMID: 30513201 PMCID: PMC6374747 DOI: 10.1021/acs.biochem.8b00852] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
Multiple
sclerosis (MS) is an autoimmune disorder manifested via
chronic inflammation, demyelination, and neurodegeneration inside
the central nervous system. The progressive phase of MS is characterized
by neurodegeneration, but unlike classical neurodegenerative diseases,
amyloid-like aggregation of self-proteins has not been documented.
There is evidence that citrullination protects an immunodominant peptide
of human myelin oligodendrocyte glycoprotein (MOG34–56) against destructive processing in Epstein-Barr virus-infected B-lymphocytes
(EBV-BLCs) in marmosets and causes exacerbation of ongoing MS-like
encephalopathies in mice. Here we collected evidence that citrullination
of MOG can also lead to amyloid-like behavior shifting the disease
pathogenesis toward neurodegeneration. We observed that an immunodominant
MOG peptide, MOG35–55, displays amyloid-like behavior
upon site-specific citrullination at positions 41, 46, and/or 52.
These amyloid aggregates are shown to be toxic to the EBV-BLCs and
to dendritic cells at concentrations favored for antigen presentation,
suggesting a role of amyloid-like aggregation in the pathogenesis
of progressive MS.
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Affiliation(s)
- Can Araman
- Leiden Institute of Chemistry and Institute for Chemical Immunology , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Miriam E van Gent
- Leiden Institute of Chemistry and Institute for Chemical Immunology , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Nico J Meeuwenoord
- Leiden Institute of Chemistry and Department of Bioorganic Synthesis , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Nicole Heijmans
- Department of Immunobiology , Biomedical Primate Research Centre , 2288 GJ Rijswijk , The Netherlands
| | - Mikkel H S Marqvorsen
- Leiden Institute of Chemistry and Institute for Chemical Immunology , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Ward Doelman
- Leiden Institute of Chemistry and Institute for Chemical Immunology , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
| | - Bart W Faber
- Department of Parasitology , Biomedical Primate Research Centre , 2288 GJ Rijswijk , The Netherlands
| | - Bert A 't Hart
- Department of Immunobiology , Biomedical Primate Research Centre , 2288 GJ Rijswijk , The Netherlands.,Department of Neuroscience , University of Groningen, University Medical Centre , 9700 AB Groningen , The Netherlands
| | - Sander I Van Kasteren
- Leiden Institute of Chemistry and Institute for Chemical Immunology , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands
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13
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Engelsma SB, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. Combined Phosphoramidite-Phosphodiester Reagents for the Synthesis of Methylene Bisphosphonates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611878] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sander B. Engelsma
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Hermen S. Overkleeft
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Gijsbert A. van der Marel
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Dmitri V. Filippov
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
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14
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Engelsma SB, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. Combined Phosphoramidite-Phosphodiester Reagents for the Synthesis of Methylene Bisphosphonates. Angew Chem Int Ed Engl 2017; 56:2955-2959. [DOI: 10.1002/anie.201611878] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Sander B. Engelsma
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Hermen S. Overkleeft
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Gijsbert A. van der Marel
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Dmitri V. Filippov
- Leiden Institute of Chemistry, Department of Bioorganic Synthesis; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
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15
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Zurlo E, Meeuwenoord NJ, Filippov DV, Huber M. Rigid Spin Labels for Improved Distance and Dynamics in Intrinsically Disordered Proteins and Peptides. Biophys J 2017. [DOI: 10.1016/j.bpj.2016.11.1713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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16
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Affiliation(s)
- Hans A.V. Kistemaker
- Department of Bio‐organic Synthesis, Leiden Institute of Chemistry, Leiden University Leiden The Netherlands
| | - Nico J. Meeuwenoord
- Department of Bio‐organic Synthesis, Leiden Institute of Chemistry, Leiden University Leiden The Netherlands
| | - Herman S. Overkleeft
- Department of Bio‐organic Synthesis, Leiden Institute of Chemistry, Leiden University Leiden The Netherlands
| | - Gijsbert A. Marel
- Department of Bio‐organic Synthesis, Leiden Institute of Chemistry, Leiden University Leiden The Netherlands
| | - Dmitri V. Filippov
- Department of Bio‐organic Synthesis, Leiden Institute of Chemistry, Leiden University Leiden The Netherlands
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17
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Kistemaker HAV, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. On the Synthesis of Oligonucleotides Interconnected through Pyrophosphate Linkages. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500911] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Pawlak JB, Gential GPP, Ruckwardt TJ, Bremmers JS, Meeuwenoord NJ, Ossendorp FA, Overkleeft HS, Filippov DV, van Kasteren SI. Bioorthogonal deprotection on the dendritic cell surface for chemical control of antigen cross-presentation. Angew Chem Int Ed Engl 2015; 54:5628-31. [PMID: 25784151 DOI: 10.1002/anie.201500301] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Indexed: 11/10/2022]
Abstract
The activation of CD8(+) T-cells requires the uptake of exogenous polypeptide antigens and proteolytic processing of these antigens to octamer or nonamer peptides, which are loaded on MHC-I complexes and presented to the T-cell. By using an azide as a bioorthogonal protecting group rather than as a ligation handle, masked antigens were generated-antigens that are not recognized by their cognate T-cell unless they are deprotected on the cell using a Staudinger reduction.
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Affiliation(s)
- Joanna B Pawlak
- Leiden Institute of Chemistry and The Institute for Chemical Immunology, Leiden University, Einsteinweg 55, 2333 CC Leiden (The Netherlands)
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19
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Pawlak JB, Gential GPP, Ruckwardt TJ, Bremmers JS, Meeuwenoord NJ, Ossendorp FA, Overkleeft HS, Filippov DV, van Kasteren SI. Bioorthogonal Deprotection on the Dendritic Cell Surface for Chemical Control of Antigen Cross-Presentation. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Kistemaker HAV, Lameijer LN, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. Synthesis of Well-Defined Adenosine Diphosphate Ribose Oligomers. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412283] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Kistemaker HAV, Lameijer LN, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. Synthesis of well-defined adenosine diphosphate ribose oligomers. Angew Chem Int Ed Engl 2015; 54:4915-8. [PMID: 25704172 DOI: 10.1002/anie.201412283] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Indexed: 11/10/2022]
Abstract
The post-translational modification of proteins that is known as adenosine diphosphate ribosylation (ADPr) regulates a wide variety of important biological processes, such as DNA-damage repair and cellular metabolism. This modification is also involved in carcinogenesis and the process of aging. Therefore, a better understanding of the function of ADP-ribosylation is crucial for the development of novel therapeutics. To facilitate the elucidation of the biology of ADPr, the availability of well-defined fragments of poly(ADP-ribose) is essential. Herein we report a solid-phase synthetic approach for the preparation of ADP-ribose oligomers of exactly defined length. The methodology is exemplified by the first reported synthesis of an ADP-ribose dimer and trimer.
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Affiliation(s)
- Hans A V Kistemaker
- Leiden Institute of Chemistry, Department of Bio-organic Synthesis, Leiden University, Einsteinweg 55, 2333 CC Leiden (The Netherlands) http://biosyn.lic.leidenuniv.nl/
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22
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van Delft P, de Witte W, Meeuwenoord NJ, van der Heden van Noort GJ, Versluis F, Olsthoorn RCL, Overkleeft HS, van der Marel GA, Filippov DV. Design of a Ribosyltriazole-Annulated Cyclooctyne for Oligonucleotide Labeling by Strain-Promoted Alkyne-Azide Cycloaddition. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Zom GG, Khan S, Britten CM, Sommandas V, Camps MGM, Loof NM, Budden CF, Meeuwenoord NJ, Filippov DV, van der Marel GA, Overkleeft HS, Melief CJM, Ossendorp F. Efficient induction of antitumor immunity by synthetic toll-like receptor ligand-peptide conjugates. Cancer Immunol Res 2014; 2:756-64. [PMID: 24950688 DOI: 10.1158/2326-6066.cir-13-0223] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Chemical conjugates comprising synthetic Toll-like receptor ligands (TLR-L) covalently bound to antigenic synthetic long peptides (SLP) are attractive vaccine modalities, which can induce robust CD8(+) T-cell immune responses. Previously, we have shown that the mechanism underlying the power of TLR-L SLP conjugates is improved delivery of the antigen together with a dendritic cell activation signal. In the present study, we have expanded the approach to tumor-specific CD4(+) as well as CD8(+) T-cell responses and in vivo studies in two nonrelated aggressive tumor models. We show that TLR2-L SLP conjugates have superior mouse CD8(+) and CD4(+) T-cell priming capacity compared with free SLPs injected together with a free TLR2-L. Vaccination with TLR2-L SLP conjugates leads to efficient induction of antitumor immunity in mice challenged with aggressive transplantable melanoma or lymphoma. Our data indicate that TLR2-L SLP conjugates are suitable to promote integrated antigen-specific CD8(+) and CD4(+) T-cell responses required for the antitumor effects. Collectively, these data show that TLR2-L SLP conjugates are promising synthetic vaccine candidates for active immunotherapy against cancer.
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Affiliation(s)
- Gijs G Zom
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Selina Khan
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Cedrik M Britten
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Vinod Sommandas
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Marcel G M Camps
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Nikki M Loof
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | - Christina F Budden
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre
| | | | | | | | | | - Cornelis J M Melief
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre; ISA Pharmaceuticals BV, Leiden, the Netherlands
| | - Ferry Ossendorp
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre;
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24
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van der Heden van Noort GJ, van Delft P, Meeuwenoord NJ, Overkleeft HS, van der Marel GA, Filippov DV. Fully automated sequential solid phase approach towards viral RNA-nucleopeptides. Chem Commun (Camb) 2012; 48:8093-5. [PMID: 22781550 DOI: 10.1039/c2cc33477a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The synthesis of two ribonucleoprotein fragments of unprecedented complexity is reported. These hybrid biomolecules are prepared combining the use of an automated solid phase peptide and oligonucleotide synthesizer on a single solid support.
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25
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Alagaratnam S, Meeuwenoord NJ, Navarro JA, Hervás M, De la Rosa MA, Hoffmann M, Einsle O, Ubbink M, Canters GW. Probing the reactivity of different forms of azurin by flavin photoreduction. FEBS J 2011; 278:1506-21. [DOI: 10.1111/j.1742-4658.2011.08067.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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van Delft P, Meeuwenoord NJ, Hoogendoorn S, Dinkelaar J, Overkleeft HS, van der Marel GA, Filippov DV. Synthesis of Oligoribonucleic Acid Conjugates Using a Cyclooctyne Phosphoramidite. Org Lett 2010; 12:5486-9. [DOI: 10.1021/ol102357u] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Pieter van Delft
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Nico J. Meeuwenoord
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Sascha Hoogendoorn
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Jasper Dinkelaar
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | | | - Dmitri V. Filippov
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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Nuzzolo M, Grabulosa A, Slawin AMZ, Meeuwenoord NJ, van der Marel GA, Kamer PCJ. Functionalization of Mono- and Oligonucleotides with Phosphane Ligands by Amide Bond Formation (Eur. J. Org. Chem. 17/2010). European J Org Chem 2010. [DOI: 10.1002/ejoc.201090043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nuzzolo M, Grabulosa A, Slawin AMZ, Meeuwenoord NJ, van der Marel GA, Kamer PCJ. Functionalization of Mono- and Oligonucleotides with Phosphane Ligands by Amide Bond Formation. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000125] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Ropartz L, Meeuwenoord NJ, van der Marel GA, van Leeuwen PWNM, Slawin AMZ, Kamer PCJ. Phosphine containing oligonucleotides for the development of metallodeoxyribozymes. Chem Commun (Camb) 2007:1556-8. [PMID: 17406706 DOI: 10.1039/b617871e] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Novel transition metal catalysts based on oligonucleotides can be easily obtained by functionalization of 5-iodouridine with phosphine ligands, resulting in good asymmetric induction in palladium catalyzed allylic nucleophilic substitution.
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Affiliation(s)
- Loïc Ropartz
- School of Chemistry, University of St. Andrews, St. Andrews, Fife, UK.
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Agrawal PR, Hofmann MW, Meeuwenoord NJ, Filippov DV, Stalz H, Hulsbergen F, Langosch D, Overkleeft HS, De Groot H. Solid-phase synthesis and purification of a set of uniformly13C,15N labelledde novo designed membrane fusogenic peptides. J Pept Sci 2007; 13:75-80. [PMID: 17121421 DOI: 10.1002/psc.786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The transmembrane segments of soluble N-ethylmaleimide-sensitive factor (SNARE) proteins or viral envelope proteins drive membrane fusion, which suggests that simple synthetic biology constructs for fusion exist and can be evaluated. We describe the high-yield synthesis of a set of de novo designed fusogenic peptides for use in functional investigations, which are highly enriched in 13C and 15N using three equivalents of labelled amino acids and optimized reaction conditions minimizing aggregation. The biomimetic peptides have a high purity >90% and show reproducible and fusogenic activity that correlates well with the intended functional design characteristics, from strongly fusogenic to almost non-fusogenic.
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Affiliation(s)
- Prashant R Agrawal
- Biophysical Organic Chemistry, Solid State NMR, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
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31
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Kriek NMAJ, Meeuwenoord NJ, van den Elst H, Heus HA, van der Marel GA, Filippov DV. Chemical synthesis of picornaviral protein primers of RNA replication. Org Biomol Chem 2006; 4:3576-86. [PMID: 16990933 DOI: 10.1039/b608544j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Naturally occurring nucleopeptidic replication primers (VPg-pUpU) of poliovirus and coxsackie virus were chemically synthesized. The synthesis was accomplished via block-coupling of two minimally protected fragments of the target structures: a short RNA-nucleopeptide and a longer peptide segment containing diverse side-chain functionalities. The synthetic VPg-pUpU of coxsackie virus was characterized by NMR spectroscopy.
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Affiliation(s)
- Nicole M A J Kriek
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2300, RA Leiden, The Netherlands
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Robillard MS, van Alphen S, Meeuwenoord NJ, J. Jansen BA, van der Marel GA, van Boom JH, Reedijk J. Solid-phase synthesis of peptide-platinum complexes using platinum-chelating building blocks derived from amino acids. NEW J CHEM 2005. [DOI: 10.1039/b411219a] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Heetebrij RJ, de Kort M, Meeuwenoord NJ, den Dulk H, van der Marel GA, van Boom JH, Reedijk J. A versatile approach towards regioselective platinated DNA sequences. Chemistry 2003; 9:1823-7. [PMID: 12698440 DOI: 10.1002/chem.200390209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Undesired N(7) platination of 2'-deoxyguanosine residues at predetermined sites in an oligodeoxynucleotide (ODN) sequence is prevented by applying the sterically demanding diphenylcarbamoyl (DPC) as an O(6)-protecting group. The presence of a base-labile oxalyl linker between the immobilized 3'-nucleotide and controlled pore glass (CPG) allows cleavage of the protected ODN from the support and leaves DPC protection unaffected. This method provides an ODN with specifically blocked guanine-N(7) sites for platination. In the hexanucleotides prepared in this study, 5'-GGBGGT-3'(for B=T, C and A), a platinum GG adduct is introduced at G4,G5. These site-specific platinated hexamers were isolated in a yield of 65 %, and were fully characterized by using reversed-phase HPLC (high performance liquid chromotography), LCMS (liquid chromatography-mass spectrometry), MALDI-TOF MS (matrix-assisted laser desorption/ionization time-of-flight mass spectrometry), PAGE (polyacrylamide gel electrophoresis) and Maxam-Gilbert sequencing analysis.
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Affiliation(s)
- Robert J Heetebrij
- Leiden Institute of Chemistry Gorlaeus Laboratories, Leiden University, P.O. Box 9502, The Netherlands
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Van Rossenberg SMW, Sliedregt-Bol KM, Meeuwenoord NJ, Van Berkel TJC, Van Boom JH, Van Der Marel GA, Biessen EAL. Targeted lysosome disruptive elements for improvement of parenchymal liver cell-specific gene delivery. J Biol Chem 2002; 277:45803-10. [PMID: 12237290 DOI: 10.1074/jbc.m203510200] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The transfection ability of nonviral gene therapy vehicles is generally hampered by untimely lysosomal degradation of internalized DNA. In this study we describe the development of a targeted lysosome disruptive element to facilitate the escape of DNA from the lysosomal compartment, thus enhancing the transfection efficacy, in a cell-specific fashion. Two peptides (INF7 and JTS-1) were tested for their capacity to disrupt liposomes. In contrast to JTS-1, INF7 induced rapid cholesterol-independent leakage (EC(50), 1.3 microm). INF7 was therefore selected for coupling to a high affinity ligand for the asialoglycoprotein receptor (ASGPr), K(GalNAc)(2), to im- prove its uptake by parenchymal liver cells. Although the parent peptide disrupted both cholesterol-rich and -poor liposomes, the conjugate, INF7-K(GalNAc)(2), only induced leakage of cholesterol-poor liposomes. Given that endosomal membranes of eukaryotic cells contain <5% cholesterol, this implies that the conjugate will display a higher selectivity toward endosomal membranes. Although both INF7 and INF7-K(GalNAc)(2) were found to increase the transfection efficiency on polyplex-mediated gene transfer to parenchymal liver cells by 30-fold, only INF7-K(GalNAc)(2) appeared to do so in an ASGPr-specific manner. In mice, INF7-K(GalNAc)(2) was specifically targeted to the liver, whereas INF7 was distributed evenly over various organs. In summary, we have prepared a nontoxic cell-specific lysosome disruptive element that improves gene delivery to parenchymal liver cells via the ASGPr. Its high cell specificity and preference to lyse intracellular membranes make this conjugate a promising lead in hepatocyte-specific drug/gene delivery protocols.
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Affiliation(s)
- Sabine M W Van Rossenberg
- Division of Biopharmaceutics, Leiden/Amsterdam Center for Drug Research and the Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P. O. Box 9502, 2300 RA Leiden, The Netherlands
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Biessen EAL, Sliedregt-Bol K, 'T Hoen PAC, Prince P, Van der Bilt E, Valentijn ARPM, Meeuwenoord NJ, Princen H, Bijsterbosch MK, Van der Marel GA, Van Boom JH, Van Berkel TJC. Design of a targeted peptide nucleic acid prodrug to inhibit hepatic human microsomal triglyceride transfer protein expression in hepatocytes. Bioconjug Chem 2002; 13:295-302. [PMID: 11906267 DOI: 10.1021/bc015550g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, we present the design and synthesis of an antisense peptide nucleic acid (asPNA) prodrug, which displays an improved biodistribution profile and an equally improved capacity to reduce the levels of target mRNA. The prodrug, K(GalNAc)(2)-asPNA, comprised of a 14-mer sequence complementary to the human microsomal triglyceride transfer protein (huMTP) gene, conjugated to a high-affinity tag for the hepatic asialoglycoprotein receptor (K(GalNAc)(2)). The prodrug was avidly bound and rapidly internalized by HepG2s. After iv injection into mice, K(GalNAc)(2)-asPNA accumulated in the parenchymal liver cells to a much greater extent than nonconjugated PNA (46% +/- 1% vs 3.1% +/- 0.5% of the injected dose, respectively). The prodrug was able to reduce MTP mRNA levels in HepG2 cells by 35-40% (P < 0.02) at 100 nM in an asialoglycoprotein receptor- and sequence-dependent fashion. In conclusion, hepatocyte-targeted PNA prodrugs combine a greatly improved tropism with an enhanced local intracellular availability and activity, making them attractive therapeutics to lower the expression level of hepatic target genes such as MTP.
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Affiliation(s)
- Erik A L Biessen
- Division of Biopharmaceutics, Leiden/Amsterdam Center for Drug Research, Leiden University, P.O. Box 9503, 2300 RA Leiden, The Netherlands.
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Soliva R, Monaco V, Gómez-Pinto I, Meeuwenoord NJ, Marel GA, Boom JH, González C, Orozco M. Solution structure of a DNA duplex with a chiral alkyl phosphonate moiety. Nucleic Acids Res 2001; 29:2973-85. [PMID: 11452022 PMCID: PMC55804 DOI: 10.1093/nar/29.14.2973] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2001] [Revised: 05/21/2001] [Accepted: 05/21/2001] [Indexed: 11/13/2022] Open
Abstract
The solution structures of two DNA decamers of sequence d(CCACCpxGGAAC).(GTTCCGGTGG) with a chiral alkyl phosphonate moiety (px) have been determined using NMR and restrained molecular dynamics simulations and compared with the solution structure of the unmodified duplex. The (1)H NMR spectra of two samples with pure stereochemistry in the modified phosphate have been assigned. The structures of both diastereoisomers, as well as the unmodified control duplex, have been determined from NMR-derived distance and torsion angle constraints. Accurate distance constraints were obtained from a complete relaxation matrix analysis of the NOE intensities. The structures have been refined with state of the art molecular dynamics methods, including explicit solvent and applying the particle mesh Ewald method to properly evaluate the long-range electrostatic interactions. In both cases, the calculations converge to well-defined structures, with RMSDs of approximately 1 A. The resulting structures belong to the general B family of DNA structures, even though the presence of the alkyl phosphonate moiety induces some slight displacement to the A-form in the neighborhood of the modified phosphate. Partial neutralization of this phosphate and the steric effect of the alkyl moiety provoke moderate bending in the DNA. This effect is more pronounced in the S diastereoisomer, where the alkyl group points inwards to the double helix.
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Affiliation(s)
- R Soliva
- Departament de Bioquímica, Universitat de Barcelona, C/. Martí i Franquès 1-11, 08028 Barcelona, Spain
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Robillard MS, Valentijn AR, Meeuwenoord NJ, Reedijk J. The First Solid-Phase Synthesis of a Peptide-Tethered Platinum(II) Complex This research was supported by the Council for Chemical Sciences of The Netherlands Organization for Scientific Research (CW-NWO) and by The Netherlands Foundation for Technical Sciences (STW). Support and sponsorship by COST Action D8/00097 (biocoordination chemistry) is kindly acknowledged. The authors thank Johnson & Matthey (Reading, UK) for their generous loan of K(2)PtCl(4). Angew Chem Int Ed Engl 2000; 39:3096-3099. [PMID: 11028044 DOI: 10.1002/1521-3773(20000901)39:17<3096::aid-anie3096>3.0.co;2-d] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- MS Robillard
- Leiden Institute of Chemistry Gorlaeus Laboratories, Leiden University P.O. Box 9502, 2300 RA Leiden (The Netherlands)
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Verheijen JC, van Roon AM, Meeuwenoord NJ, Stuivenberg HR, Bayly SF, Chen L, van der Marel GA, Torrence PF, van Boom JH. Incorporation of a 4-hydroxy-N-acetylprolinol nucleotide analogue improves the 3'-exonuclease stability of 2'-5'-oligoadenylate-antisense conjugates. Bioorg Med Chem Lett 2000; 10:801-4. [PMID: 10782690 DOI: 10.1016/s0960-894x(00)00100-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Incorporation of a 4-hydroxy-N-acetylprolinol nucleotide analogue at the 3'-terminus of DNA or 2-5A-DNA sequences resulted in a significantly enhanced 3'-exonuclease resistance while the affinity for complementary RNA was only slightly decreased. Furthermore, the binding to and activation of human RNase L by thus modified 2-5A-DNA conjugates was not altered as compared to the parent unmodified 2-5A-DNAs.
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Affiliation(s)
- J C Verheijen
- Leiden Institute of Chemistry, Gorlaeus Laboratories, The Netherlands
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Schmidt KS, Filippov DV, Meeuwenoord NJ, van der Marel GA, van Boom JH, Lippert B, Reedijk J. Solid-Phase Synthesis of a Monofunctionaltrans-a2PtII Complex Tethered to a Single-Stranded Oligonucleotide. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000117)112:2<383::aid-ange383>3.0.co;2-f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schmidt KS, Filippov DV, Meeuwenoord NJ, van der Marel GA, van Boom JH, Lippert B, Reedijk J. Solid-Phase Synthesis of a Monofunctionaltrans-a2PtII Complex Tethered to a Single-Stranded Oligonucleotide. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3773(20000117)39:2<375::aid-anie375>3.0.co;2-m] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Schmidt KS, Filippov DV, Meeuwenoord NJ, Lippert B, Reedijk J. Solid-Phase Synthesis of a Monofunctional trans-a(2)Pt(II) Complex Tethered to a Single-Stranded Oligonucleotide. Angew Chem Int Ed Engl 2000; 39:375-377. [PMID: 10649415 DOI: 10.1002/(sici)1521-3773(20000117)39:2<375::aid-anie375>3.3.co;2-d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cross-linking ability is possible with the oligonucleotide-tethered, monofunctional trans-Pt(II) complex shown. It was synthesized by a novel solid-phase approach comprising conjugation of immobilized tetrathymidylic acid with a trans-a(2)Pt(II) building unit, ammonolysis, and transformation of the resulting complex (R=1-N-cyclohexylmethylthyminate) into the chloro derivative (R=Cl). a=NH(2)CH(3), T=thymine.
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Affiliation(s)
- KS Schmidt
- Leiden Institute of Chemistry Gorlaeus Laboratories, Leiden University 2300 RA Leiden (The Netherlands)
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Monaco V, van de Wetering KI, Meeuwenoord NJ, van den Elst HA, Stuivenberg HR, Visse R, van der Kaaden JC, Moolenaar GF, Verhoeven EE, Goosen N, van der Marel GA, van Boom JH. Synthesis and biological evaluation of modified DNA fragments for the study of nucleotide excision repair in E. coli. Nucleosides Nucleotides 1999; 18:1339-41. [PMID: 10474222 DOI: 10.1080/07328319908044710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Three new cholesterol-containing phosphoramidites where synthesized and used in automated synthesis of modified DNA fragments. These cholesterol lesions are good substrates for the E. coli UvrABC endonuclease. In vitro they are incised from damaged DNA with higher efficiency in respect with the cholesterol lesions previously published.
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Affiliation(s)
- V Monaco
- Leiden Institute of Chemistry, The Netherlands
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Overkleeft HS, Verhelst SH, Pieterman E, Meeuwenoord NJ, Overhand M, Cohen LH, van der Marel GA, van Boom JH. Design and synthesis of a protein:Farnesyltransferase inhibitor based on sugar amino acids. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)00697-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Filippov D, Meeuwenoord NJ, Marel GAVD, Efimov VA, Kuyl-Yeheskiely E, Boom JHV. An Approach to the Solid Phase Synthesis of Oligonucleotides Containing N-Acylphosphoramidate Internucleosidic Linkages. Synlett 1996. [DOI: 10.1055/s-1996-5511] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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