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Siow A, Kowalczyk R, Hong J, Harris PWR. Chemical Modifications on the αvβ6 Integrin Targeting A20FMDV2 Peptide: A Review. ChemMedChem 2024; 19:e202400131. [PMID: 38830829 DOI: 10.1002/cmdc.202400131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
Integrin proteins have received a significant increase in attention in recent scientific endeavors. The current trend uses the pre-established knowledge that the arginyl-glycyl-aspartic acid (RGD) structural motif present in the A20FMDV2 peptide is highly selective for the integrin class αvβ6 which is overexpressed in many cancer types. This review will provide an extensive overview of the existing literature research to date to the best of our knowledge, highlighting significant improvements and drawbacks of structure-activity relationships (SAR) work undertaken, aiding future research to identify established SAR for an informed design of future A20FMDV2 mimetic inhibitors. Herein, the review aims to collate the existing structural chemical modifications present on A20FMDV2 in the literature to highlight key structural analogues that display more potent biological activity.
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Affiliation(s)
- Andrew Siow
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Renata Kowalczyk
- School of Biological Sciences, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Jiwon Hong
- School of Biological Sciences and Surgical and Translational Research Centre, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Paul W R Harris
- School of Chemical Sciences, School of Biological Sciences and The Maurice Wilkins Center for Molecular Biodiscovery, The University of Auckland, 23 and 3A Symonds Street, Auckland, 1010, New Zealand
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2
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Hung KY, Kowalczyk R, Desai A, Brimble MA, Marshall JF, Harris PWR. Synthesis and Systematic Study on the Effect of Different PEG Units on Stability of PEGylated, Integrin-αvβ6-Specific A20FMDV2 Analogues in Rat Serum and Human Plasma. Molecules 2022; 27:4331. [PMID: 35889207 PMCID: PMC9316855 DOI: 10.3390/molecules27144331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 11/18/2022] Open
Abstract
A20FMDV2 is a 20-mer peptide that exhibits high selectivity and affinity for the tumour-related αvβ6 integrin that can compete with extracellular ligands for the crucial RGD binding site, playing a role as a promising αvβ6-specific inhibitor for anti-cancer therapies. Unfortunately, the clinical value of A20FMDV2 is limited by its poor half-life in blood caused by rapid renal excretion and its reported high susceptibility to serum proteases. The incorporation of poly (ethylene glycol) chains, coined PEGylation, is a well-established approach to improve the pharmacokinetic properties of drug molecules. Here, we report a systematic study on the incorporation of a varying number of ethylene glycol units (1-20) into the A20FMDV2 peptide to establish the effects of PEGylation size on the peptide stability in both rat serum and human plasma. In addition, the effect of acetyl and propionyl PEGylation handles on peptide stability is also described. Selected peptide analogues were assessed for integrin-αvβ6-targeted binding, showing good specificity and activity in vitro. Stability studies in rat serum established that all of the PEGylated peptides displayed good stability, and an A20FMDV2 peptide containing twenty ethylene glycol units (PEG20) was the most stable. Surprisingly, the stability testing in human plasma identified shorter PEGs (PEG2 and PEG5) as more resistant to degradation than longer PEGs, a trend which was also observed with affinity binding to integrin αvβ6.
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Affiliation(s)
- Kuo-yuan Hung
- The School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland 1010, New Zealand; (K.-y.H.); (M.A.B.)
| | - Renata Kowalczyk
- The School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland 1010, New Zealand; (K.-y.H.); (M.A.B.)
| | - Ami Desai
- Centre for Tumour Biology, Barts Cancer Institute-Cancer Research UK Centre of Excellence, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK;
| | - Margaret A. Brimble
- The School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland 1010, New Zealand; (K.-y.H.); (M.A.B.)
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
- The School of Biological Sciences, University of Auckland, 3A Symonds St, Auckland 1010, New Zealand
| | - John F. Marshall
- Centre for Tumour Biology, Barts Cancer Institute-Cancer Research UK Centre of Excellence, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK;
| | - Paul W. R. Harris
- The School of Chemical Sciences, University of Auckland, 23 Symonds St, Auckland 1010, New Zealand; (K.-y.H.); (M.A.B.)
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Private Bag 92019, Auckland 1010, New Zealand
- The School of Biological Sciences, University of Auckland, 3A Symonds St, Auckland 1010, New Zealand
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Gyuricza B, Szabó JP, Arató V, Szücs D, Vágner A, Szikra D, Fekete A. Synthesis of Novel, Dual-Targeting 68Ga-NODAGA-LacN-E[c(RGDfK)] 2 Glycopeptide as a PET Imaging Agent for Cancer Diagnosis. Pharmaceutics 2021; 13:pharmaceutics13060796. [PMID: 34073528 PMCID: PMC8227980 DOI: 10.3390/pharmaceutics13060796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/17/2021] [Accepted: 05/20/2021] [Indexed: 12/15/2022] Open
Abstract
Radiolabeled peptides possessing an Arg-Gly-Asp (RGD) motif are widely used radiopharmaceuticals for PET imaging of tumor angiogenesis due to their high affinity and selectivity to αvβ3 integrin. This receptor is overexpressed in tumor and tumor endothelial cells in the case of numerous cancer cell lines, therefore, it is an excellent biomarker for cancer diagnosis. The galectin-3 protein is also highly expressed in tumor cells and N-acetyllactosamine is a well-established ligand of this receptor. We have developed a synthetic method to prepare a lactosamine-containing radiotracer, namely 68Ga-NODAGA-LacN-E[c(RGDfK)]2, for cancer diagnosis. First, a lactosamine derivative with azido-propyl aglycone was synthetized. Then, NODAGA-NHS was attached to the amino group of this lactosamine derivative. The obtained compound was conjugated to an E[c(RGDfK)]2 peptide with a strain-promoted click reaction. We have accomplished the radiolabeling of the synthetized NODAGA-LacN-E[c(RGDfK)]2 precursor with a positron-emitting 68Ga isotope (radiochemical yield of >95%). The purification of the labeled compound with solid-phase extraction resulted in a radiochemical purity of >99%. Subsequently, the octanol–water partition coefficient (log P) of the labeled complex was determined to be −2.58. In addition, the in vitro stability of 68Ga-NODAGA-LacN-E[c(RGDfK)]2 was investigated and it was found that it was stable under the examined conditions.
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Affiliation(s)
- Barbara Gyuricza
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Doctoral School of Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary
| | - Judit P. Szabó
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Doctoral School of Clinical Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Viktória Arató
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Doctoral School of Pharmaceutical Sciences, Faculty of Pharmacy, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Dániel Szücs
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Doctoral School of Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary
| | - Adrienn Vágner
- Scanomed Ltd., Nagyerdei krt. 98, H-4032 Debrecen, Hungary;
| | - Dezső Szikra
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Scanomed Ltd., Nagyerdei krt. 98, H-4032 Debrecen, Hungary;
| | - Anikó Fekete
- Division of Nuclear Medicine and Translational Imaging, Department of Medical Imaging, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary; (B.G.); (J.P.S.); (V.A.); (D.S.); (D.S.)
- Correspondence: ; Tel.: +36-52-255-510 (ext. 54470)
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Hung KY, Harris PWR, Desai A, Marshall JF, Brimble MA. Structure-activity relationship study of the tumour-targeting peptide A20FMDV2 via modification of Lys16, Leu13, and N- and/or C-terminal functionality. Eur J Med Chem 2017; 136:154-164. [PMID: 28494253 DOI: 10.1016/j.ejmech.2017.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 04/24/2017] [Accepted: 05/02/2017] [Indexed: 12/16/2022]
Abstract
The 20-residue linear peptide A20FMDV2 has been shown to exhibit high selectivity and affinity for the tumour-related αvβ6 integrin and has potential as a vector for therapeutic drugs. However, it exhibits poor half-life in plasma in part due to its high susceptibility to serum proteases. In this study fourteen A20FMDV2 analogues incorporating non-proteinogenic substitutes of the native Lys16 and Leu13 residues and six A20FMDV2 analogues containing modified N- and C-termini were synthesised to increase the half-life and activity of A20FMDV2. The analogues incorporating modified terminal motifs of A20FMDV2 were found to strongly bind to the αvβ6 integrin and were subsequently functionalized with the diethylenetriaminepentaacetic acid chelating agent to facilitate coupling with radioactive indium-111 for human plasma stability and in vivo biodistribution studies. A20FMDV2 peptide variants incorporating an N-terminal d-Asn and C-terminal d-Thr exhibited improved relative activity in vitro and were less susceptible to plasma degradation.
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Affiliation(s)
- Kuo-Yuan Hung
- School of Biological Sciences, The University of Auckland, 3a Symonds Street, Auckland Central 1010, New Zealand
| | - Paul W R Harris
- School of Biological Sciences, The University of Auckland, 3a Symonds Street, Auckland Central 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3a Symonds Street, Auckland Central 1010, New Zealand
| | - Ami Desai
- Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
| | - John F Marshall
- Barts Cancer Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom.
| | - Margaret A Brimble
- School of Biological Sciences, The University of Auckland, 3a Symonds Street, Auckland Central 1010, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, 3a Symonds Street, Auckland Central 1010, New Zealand; School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland Central 1010, New Zealand.
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Paterson BM, Donnelly PS. Macrocyclic Bifunctional Chelators and Conjugation Strategies for Copper-64 Radiopharmaceuticals. ADVANCES IN INORGANIC CHEMISTRY 2016. [DOI: 10.1016/bs.adioch.2015.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Choi MH, Shim HE, Nam YR, Kim HR, Kang JA, Lee DE, Park SH, Choi DS, Jang BS, Jeon J. Synthesis and evaluation of an (125)I-labeled azide prosthetic group for efficient and bioorthogonal radiolabeling of cyclooctyne-group containing molecules using copper-free click reaction. Bioorg Med Chem Lett 2015; 26:875-878. [PMID: 26748695 DOI: 10.1016/j.bmcl.2015.12.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 11/30/2015] [Accepted: 12/22/2015] [Indexed: 02/06/2023]
Abstract
Herein we report the radiosynthesis of a pyridine derived azide prosthetic group for iodine radioisotope labeling of dibenzocyclooctyne (DBCO) conjugated molecules. The radiolabeling of the stannylated precursor 2 was conducted using [(125)I]NaI and chloramine-T to give (125)I-labeled azide ([(125)I]1) with high radiochemical yield (72±8%, n=4) and radiochemical purity (>99%). Using (125)I-labeled azide ([(125)I]1), cyclic RGD peptide and near infrared fluorescent molecule were efficiently labeled with modest to good radiochemical yields. The biodistribution study and SPECT/CT images showed that [(125)I]1 underwent rapid renal clearance. These results clearly demonstrated that [(125)I]1 could be used as an useful radiotracer for in vivo pre-targeted imaging as well as efficient in vitro radiolabeling of DBCO containing molecules.
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Affiliation(s)
- Mi Hee Choi
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Ha Eun Shim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - You Ree Nam
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Hye Rim Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Jung Ae Kang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Dong-Eun Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Sang Hyun Park
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea; Department of Radiation Biotechnology and Applied Radioisotope Science, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
| | - Dae Seong Choi
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Beom-Su Jang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea; Department of Radiation Biotechnology and Applied Radioisotope Science, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
| | - Jongho Jeon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Jeonbuk 580-185, Republic of Korea; Department of Radiation Biotechnology and Applied Radioisotope Science, Korea University of Science and Technology, Daejeon 305-350, Republic of Korea.
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Smyslova P, Popa I, Lyčka A, Tejral G, Hlavac J. Non-Catalyzed Click Reactions of ADIBO Derivatives with 5-Methyluridine Azides and Conformational Study of the Resulting Triazoles. PLoS One 2015; 10:e0144613. [PMID: 26673606 PMCID: PMC4690608 DOI: 10.1371/journal.pone.0144613] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 11/20/2015] [Indexed: 12/25/2022] Open
Abstract
Copper-free click reactions between a dibenzoazocine derivative and azides derived from 5-methyluridine were investigated. The non-catalyzed reaction yielded both regioisomers in an approximately equivalent ratio. The NMR spectra of each regioisomer revealed conformational isomery. The ratio of isomers was dependent on the type of regioisomer and the type of solvent. The synthesis of various analogs, a detailed NMR study and computational modeling provided evidence that the isomery was dependent on the interaction of the azocine and pyrimidine parts.
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Affiliation(s)
- Petra Smyslova
- Institute of Molecular and Translation Medicine, Olomouc, Czech Republic
- Department of Organic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
| | - Igor Popa
- Institute of Molecular and Translation Medicine, Olomouc, Czech Republic
| | - Antonín Lyčka
- University of Hradec Kralove, Faculty of Science, Hradec Kralove, Czech Republic
| | - Gracian Tejral
- Institute of Biophysics, Second Faculty of Medicine, Charles University, Praha 5, Czech Republic
- Laboratory of Tissue Engineering, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic, Praha 4, Czech Republic
| | - Jan Hlavac
- Institute of Molecular and Translation Medicine, Olomouc, Czech Republic
- Department of Organic Chemistry, Faculty of Science, Palacký University, Olomouc, Czech Republic
- * E-mail:
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Jeon J, Kang JA, Shim HE, Nam YR, Yoon S, Kim HR, Lee DE, Park SH. Efficient method for iodine radioisotope labeling of cyclooctyne-containing molecules using strain-promoted copper-free click reaction. Bioorg Med Chem 2015; 23:3303-8. [DOI: 10.1016/j.bmc.2015.04.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 04/16/2015] [Accepted: 04/17/2015] [Indexed: 01/08/2023]
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