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Deyev SM, Oroujeni M, Garousi J, Gräslund T, Li R, Rosly AHB, Orlova A, Konovalova E, Schulga A, Vorobyeva A, Tolmachev V. Preclinical Evaluation of HER2-Targeting DARPin G3: Impact of Albumin-Binding Domain (ABD) Fusion. Int J Mol Sci 2024; 25:4246. [PMID: 38673831 PMCID: PMC11050402 DOI: 10.3390/ijms25084246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/07/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Designed ankyrin repeat protein (DARPin) G3 is an engineered scaffold protein. This small (14.5 kDa) targeting protein binds with high affinity to human epidermal growth factor receptor 2 (HER2). HER2 is overexpressed in several cancers. The use of the DARPin G3 for radionuclide therapy is complicated by its high renal reabsorption after clearance via the glomeruli. We tested the hypothesis that a fusion of the DARPin G3 with an albumin-binding domain (ABD) would prevent rapid renal excretion and high renal reabsorption resulting in better tumour targeting. Two fusion proteins were produced, one with the ABD at the C-terminus (G3-ABD) and another at the N-terminus (ABD-G3). Both variants were labelled with 177Lu. The binding properties of the novel constructs were evaluated in vitro and their biodistribution was compared in mice with implanted human HER2-expressing tumours. Fusion with the ABD increased the retention time of both constructs in blood compared with the non-ABD-fused control. The effect of fusion with the ABD depended strongly on the order of the domains in the constructs, resulting in appreciably better targeting properties of [177Lu]Lu-G3-ABD. Our data suggest that the order of domains is critical for the design of targeting constructs based on scaffold proteins.
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Affiliation(s)
- Sergey M. Deyev
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (S.M.D.); (E.K.); (A.S.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Maryam Oroujeni
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (J.G.); (A.H.B.R.); (A.V.)
- Affibody AB, 171 65 Solna, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (J.G.); (A.H.B.R.); (A.V.)
- Department of Protein Science, KTH—Royal Institute of Technology, 106 91 Stockholm, Sweden; (T.G.); (R.L.)
| | - Torbjörn Gräslund
- Department of Protein Science, KTH—Royal Institute of Technology, 106 91 Stockholm, Sweden; (T.G.); (R.L.)
| | - Ruonan Li
- Department of Protein Science, KTH—Royal Institute of Technology, 106 91 Stockholm, Sweden; (T.G.); (R.L.)
| | - Alia Hani Binti Rosly
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (J.G.); (A.H.B.R.); (A.V.)
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (S.M.D.); (E.K.); (A.S.)
| | - Alexey Schulga
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (S.M.D.); (E.K.); (A.S.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (J.G.); (A.H.B.R.); (A.V.)
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (J.G.); (A.H.B.R.); (A.V.)
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Larkina M, Varvashenya R, Yuldasheva F, Plotnikov E, Bezverkhniaia E, Tretyakova M, Zelchan R, Schulga A, Konovalova E, Vorobyeva A, Belousov M, Orlova A, Tolmachev V, Deyev S. Comparative Preclinical Evaluation of HYNIC-Modified Designed Ankyrin Repeat Proteins G3 for the 99mTc-Based Imaging of HER2-Expressing Malignant Tumors. Mol Pharm 2024; 21:1919-1932. [PMID: 38557163 DOI: 10.1021/acs.molpharmaceut.3c01173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
HER2 status determination is a necessary step for the proper choice of therapy and selection of patients for the targeted treatment of cancer. Targeted radiotracers such as radiolabeled DARPins provide a noninvasive and effective way for the molecular imaging of HER2 expression. This study aimed to evaluate tumor-targeting properties of three 99mTc-labeled DARPin G3 variants containing Gly-Gly-Gly-Cys (G3C), (Gly-Gly-Gly-Ser)3-Cys ((G3S)3C), or Glu-Glu-Glu-Cys (E3C) amino acid linkers at the C-terminus and conjugated to the HYNIC chelating agent, as well as to compare them with the clinically evaluated DARPin G3 labeled with 99mTc(CO)3 using the (HE)3-tag at the N-terminus. The labeling of DARPin G3-HYNIC variants provided radiochemical yields in the range of 50-80%. Labeled variants bound specifically to human HER2-expressing cancer cell lines with affinities in the range of 0.5-3 nM. There was no substantial influence of the linker and HYNIC chelator on the binding of 99mTc-labeled DARPin G3 variants to HER2 in vitro; however, [99mTc]Tc-G3-(G3S)3C-HYNIC had the highest affinity. Comparative biodistribution of [99mTc]Tc-G3-G3C-HYNIC, [99mTc]Tc-G3-(G3S)3C-HYNIC, [99mTc]Tc-G3-E3C-HYNIC, and [99mTc]Tc-(HE)3-G3 in healthy CD1 mice showed that there was a strong influence of the linkers on uptake in normal tissues. [99mTc]Tc-G3-E3C-HYNIC had an increased retention of activity in the liver and the majority of other organs compared to the other conjugates. The tumor uptake of [99mTc]Tc-G3-(G3S)3C-HYNIC and [99mTc]Tc-(HE)3-G3 in Nu/j mice bearing SKOV-3 xenografts was similar. The specificity of tumor targeting in vivo was demonstrated for both tracers. [99mTc]Tc-G3-(G3S)3C-HYNIC provided comparable, although slightly lower tumor-to-lung, tumor-to spleen and tumor-to-liver ratios than [99mTc]Tc-(HE)3-G3. Radiolabeling of DARPin G3-HYNIC conjugates with 99mTc provided the advantage of a single-step radiolabeling procedure; however, the studied HYNIC conjugates did not improve imaging contrast compared to the 99mTc-tricarbonyl-labeled DARPin G3. At this stage, [99mTc]Tc-(HE)3-G3 remains the most promising candidate for the clinical imaging of HER2-overexpressing cancers.
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Affiliation(s)
- Maria Larkina
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Ruslan Varvashenya
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Feruza Yuldasheva
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Evgenii Plotnikov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Ekaterina Bezverkhniaia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Maria Tretyakova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Roman Zelchan
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, 634009 Tomsk, Russia
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Elena Konovalova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Anzhelika Vorobyeva
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden
| | - Mikhail Belousov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 75185 Uppsala, Sweden
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
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Ehsasatvatan M, Baghban Kohnehrouz B. A new trivalent recombinant protein for type 2 diabetes mellitus with oral delivery potential: design, expression, and experimental validation. J Biomol Struct Dyn 2024:1-16. [PMID: 38468545 DOI: 10.1080/07391102.2024.2329290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 03/06/2024] [Indexed: 03/13/2024]
Abstract
Glucagon-like peptide-1 (GLP-1) receptor agonists are increasingly used in clinical practice for the management of type 2 diabetes mellitus. However, the extremely short half-life of GLP-1 and the need for subcutaneous administration limit its clinical application. Thus, half-life extension and alternative delivery methods are highly desired. DARPin domains with high affinity for human serum albumin (HSA) have been selected for the half-life extension of therapeutic peptides and proteins. In the present study, novel trivalent fusion proteins as long-acting GLP-1 receptor agonists with potential for oral delivery were computationally engineered by incorporating a protease-resistant modified GLP-1, an anti-human serum albumin DARPin, and an approved cell-penetrating peptide (Penetratin, Tat, and Polyarginine) linked either by rigid or flexible linkers. Theoretical studies and molecular dynamics simulation results suggested that mGLP1-DARPin-Pen has acceptable quality and stability. Moreover, the potential affinity of the selected fusion proteins for GLP-1 receptor and human serum albumin was explored by molecular docking. The recombinant construct was cloned into the pET28a vector and expressed in Escherichia coli. SDS-PAGE analysis of the purified fusion protein matched its molecular size and was confirmed by western blot analysis. The results demonstrated that the engineered fusion protein could bind HSA with high affinity. Importantly, insulin secretion assays using a mouse pancreatic β-cell line (β-TC6) revealed that the engineered trivalent fusion protein retained the ability to stimulate cellular insulin secretion. Immunofluorescence microscopy analysis indicated the CPP-dependent cellular uptake of mGLP1-DARPin-Pen. These findings demonstrated that mGLP1-DARPin-Pen is a highly potent oral drug candidate that could be particularly useful in the treatment of type 2 diabetes mellitus.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Maryam Ehsasatvatan
- Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Bahram Baghban Kohnehrouz
- Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
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Isfahani MB, Mahnam K, Seyedhosseini-Ghaheh H, Sadeghi HMM, Khanahmad H, Akbari V, Varshosaz J. Computational design of newly engineered DARPins as HER2 receptor inhibitors for breast cancer treatment. Res Pharm Sci 2023; 18:626-637. [PMID: 39005564 PMCID: PMC11246109 DOI: 10.4103/1735-5362.389950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 06/12/2023] [Accepted: 08/26/2023] [Indexed: 07/16/2024] Open
Abstract
Background and purpose Human epidermal growth factor receptor 2 (HER2) is overexpressed in approximately 25% of breast cancer patients; therefore, its inhibition is a therapeutic target in cancer treatment. Experimental approach In this study, two new variants of designed ankyrin repeat proteins (DARPins), designated EG3-1 and EG3-2, were designed to increase their affinity for HER2 receptors. To this end, DARPin G3 was selected as a template, and six-point mutations comprising Q26E, I32V, T49A, L53H, K101R, and G124V were created on its structure. Furthermore, the 3D structures were formed through homology modeling and evaluated using molecular dynamic simulation. Then, both structures were docked to the HER2 receptor using the HADDOCK web tool, followed by 100 ns of molecular dynamics simulation for both DARPins / HER2 complexes. Findings/Results The theoretical result confirmed both structures' stability. Molecular dynamics simulations reveal that the applied mutations on DARPin EG3-2 significantly improve the receptor binding affinity of DARPin. Conclusion and implications The computationally engineered DARPin EG3-2 in this study could provide a hit compound for the design of promising anticancer agents targeting HER2 receptors.
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Affiliation(s)
- Maryam Beheshti Isfahani
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Karim Mahnam
- Faculty of Science, Department of Biology, Shahrekord University, Shahrekord, Iran
| | | | - Hamid Mir Mohammad Sadeghi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Khanahmad
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran
| | - Vajihe Akbari
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Jaleh Varshosaz
- Novel Drug Delivery Systems Research Center, Department of Pharmaceutics, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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Ehsasatvatan M, Baghban Kohnehrouz B. Designing and computational analyzing of chimeric long-lasting GLP-1 receptor agonists for type 2 diabetes. Sci Rep 2023; 13:17778. [PMID: 37853095 PMCID: PMC10584922 DOI: 10.1038/s41598-023-45185-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 10/17/2023] [Indexed: 10/20/2023] Open
Abstract
Glucagon-like peptide-1 (GLP-1) is an intestinally derived incretin that plays a vital role in engineering the biological circuit involved in treating type 2 diabetes. Exceedingly short half-life (1-2 min) of GLP-1 limits its therapeutic applicability, and the implication of its new variants is under question. Since albumin-binding DARPin as a mimetic molecule has been reported to increase the serum half-life of therapeutic compounds, the interaction of new variants of GLP-1 in fusion with DARPin needs to be examined against the GLP-1 receptor. This study was aimed to design stable and functional fusion proteins consisting of new protease-resistant GLP-1 mutants (mGLP1) genetically fused to DARPin as a critical step toward developing long-acting GLP-1 receptor agonists. The stability and solubility of the engineered fusion proteins were analyzed, and their secondary and tertiary structures were predicted and satisfactorily validated. Molecular dynamics simulation studies revealed that the predicted structures of engineered fusion proteins remained stable throughout the simulation. The relative binding affinity of the engineered fusion proteins' complex with human serum albumin and the GLP-1 receptor individually was assessed using molecular docking analyses. It revealed a higher affinity compared to the interaction of the individual GLP-1 and HSA-binding DARPin with the GLP-1 receptor and human serum albumin, respectively. The present study suggests that engineered fusion proteins can be used as a potential molecule in the treatment of type 2 diabetes, and this study provides insight into further experimental use of mimetic complexes as alternative molecules to be evaluated as new bio-breaks in the engineering of biological circuits in the treatment of type 2 diabetes.
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Affiliation(s)
- Maryam Ehsasatvatan
- Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, 51666, Iran
| | - Bahram Baghban Kohnehrouz
- Department of Plant Breeding and Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, 51666, Iran.
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Ehsasatvatan M, Kohnehrouz BB. The lyophilized chloroplasts store synthetic DARPin G3 as bioactive encapsulated organelles. J Biol Eng 2023; 17:63. [PMID: 37798746 PMCID: PMC10557345 DOI: 10.1186/s13036-023-00383-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 10/02/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND The high cost of fermentation, purification, cold storage and transportation, short shelf life, and sterile delivery methods of biopharmaceuticals, is a matter for producers and consumers as well. Since the FDA has now approved plant cells for large-scale, cost-effective biopharmaceutical production, the isolation and lyophilization of transplastomic chloroplasts can cover concerns about limitations. DARPins are engineered small single-domain proteins that have been selected to bind to HER2 with high affinity and specificity. HER2 is an oncogene involved in abnormal cell growth in some cancers and the target molecule for cancer immunotherapy. RESULTS In this study, we reported the prolonged stability and functionality of DARPin G3 in lyophilized transplastomic tobacco leaves and chloroplasts. Western blot analysis of lyophilized leaves and chloroplasts stored at room temperature for up to nine months showed that the DARPin G3 protein was stable and preserved proper folding. Lyophilization of leaves and isolated chloroplasts increased DARPin G3 protein concentrations by 16 and 32-fold, respectively. The HER2-binding assay demonstrated that the chloroplast-made DARPin G3 can maintain its stability and binding activity without any affinity drop in lyophilized leaf materials throughout this study for more than nine months at room temperature. CONCLUSION Lyophilization of chloroplasts expressing DARPin G3 would further reduce costs and simplify downstream processing, purification, and storage. Compressed packages of lyophilized chloroplasts were much more effective than lyophilized transplastomic leaves considering occupied space and downstream extraction and purification of DARPin G3 after nine months. These methods facilitate any relevant formulation practices for these compounds to meet any demand-oriented needs.
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Affiliation(s)
- Maryam Ehsasatvatan
- Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, 51666, Iran
| | - Bahram Baghban Kohnehrouz
- Department of Plant Breeding & Biotechnology, Faculty of Agriculture, University of Tabriz, Tabriz, 51666, Iran.
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Bragina O, Chernov V, Schulga A, Konovalova E, Hober S, Deyev S, Sörensen J, Tolmachev V. Direct Intra-Patient Comparison of Scaffold Protein-Based Tracers, [ 99mTc]Tc-ADAPT6 and [ 99mTc]Tc-(HE) 3-G3, for Imaging of HER2-Positive Breast Cancer. Cancers (Basel) 2023; 15:3149. [PMID: 37370758 DOI: 10.3390/cancers15123149] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/01/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Previous Phase I clinical evaluations of the radiolabelled scaffold proteins [99mTc]Tc-ADAPT6 and DARPin [99mTc]Tc-(HE)3-G3 in breast cancer patients have demonstrated their safety and indicated their capability to discriminate between HER2-positive and HER2-negative tumours. The objective of this study was to compare the imaging of HER2-positive tumours in the same patients using [99mTc]Tc-ADAPT6 and [99mTc]Tc-(HE)3-G3. Eleven treatment-naïve female patients (26-65 years) with HER2-positive primary and metastatic breast cancer were included in the study. Each patient was intravenously injected with [99mTc]Tc-ADAPT6, followed by an [99mTc]Tc-(HE)3-G3 injection 3-4 days later and chest SPECT/CT was performed. All primary tumours were clearly visualized using both tracers. The uptake of [99mTc]Tc-ADAPT6 in primary tumours (SUVmax = 4.7 ± 2.1) was significantly higher (p < 0.005) than the uptake of [99mTc]Tc-(HE)3-G3 (SUVmax = 3.5 ± 1.7). There was no significant difference in primary tumour-to-contralateral site values for [99mTc]Tc-ADAPT6 (15.2 ± 7.4) and [99mTc]Tc-(HE)3-G3 (19.6 ± 12.4). All known lymph node metastases were visualized using both tracers. The uptake of [99mTc]Tc-ADAPT6 in all extrahepatic soft tissue lesions was significantly (p < 0.0004) higher than the uptake of [99mTc]Tc-(HE)3-G3. In conclusion, [99mTc]Tc-ADAPT6 and [99mTc]Tc-(HE)3-G3 are suitable for the visualization of HER2-positive breast cancer. At the selected time points, [99mTc]Tc-ADAPT6 has a significantly higher uptake in soft tissue lesions, which might be an advantage for the visualization of small metastases.
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Affiliation(s)
- Olga Bragina
- Department of Nuclear Therapy and Diagnostic, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, 634009 Tomsk, Russia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Vladimir Chernov
- Department of Nuclear Therapy and Diagnostic, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, 634009 Tomsk, Russia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Elena Konovalova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Sophia Hober
- Department of Protein Science, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Jens Sörensen
- Department of Surgical Sciences, Nuclear Medicine & PET, Uppsala University, 751 85 Uppsala, Sweden
| | - Vladimir Tolmachev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden
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Novoselova MV, Shramova EI, Sergeeva OV, Shcherbinina EY, Perevoschikov SV, Melnikov P, Griaznova OY, Sergeev IS, Konovalova EV, Schulga AA, Proshkina GM, Zatsepin TS, Deyev SM, Gorin DA. Polymer/magnetite carriers functionalized by HER2-DARPin: Avoiding lysosomes during internalization and controlled toxicity of doxorubicin by focused ultrasound induced release. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 47:102612. [PMID: 36243307 DOI: 10.1016/j.nano.2022.102612] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 09/08/2022] [Accepted: 09/25/2022] [Indexed: 11/05/2022]
Abstract
Nanomedicine has revolutionized the available treatment options during the last decade, but poor selectivity of targeted drug delivery and release is still poses a challenge. In this study, doxorubicin (DOX) and magnetite nanoparticles were encapsulated by freezing-induced loading, coated with polymeric shell bearing two bi-layers of polyarginine/dextran sulphate and finally modified with HER2-specific DARPin proteins. We demonstrated that the enhanced cellular uptake of these nanocarriers predominantly occurs by SKOV-3 (HER2+) cells, in comparison to CHO (HER2-) cells, together with the controlled DOX release using low intensity focused ultrasound (LIFU). In addition, a good ability of DARPin+ capsules to accumulate in the tumor and the possibility of combination therapy with LIFU were demonstrated. A relatively high sensitivity of the obtained nanocarriers to LIFU and their preferential interactions with mitochondria in cancer cells make these carriers promising candidates for cancer treatment, including novel approaches to overcome drug resistance.
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Affiliation(s)
- M V Novoselova
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | - E I Shramova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - O V Sergeeva
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | - E Y Shcherbinina
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
| | | | - P Melnikov
- V. Serbsky National Medical Research Center for Psychiatry and Narcology, Moscow 119034, Russia
| | - O Yu Griaznova
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia.
| | - I S Sergeev
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia
| | - E V Konovalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - A A Schulga
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - G M Proshkina
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia.
| | - T S Zatsepin
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - S M Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow 117997, Russia
| | - D A Gorin
- Skolkovo Institute of Science and Technology, Moscow 121205, Russia.
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Larkina M, Plotnikov E, Bezverkhniaia E, Shabanova Y, Tretyakova M, Yuldasheva F, Zelchan R, Schulga A, Konovalova E, Vorobyeva A, Garousi J, Gräslund T, Belousov M, Tolmachev V, Deyev S. Comparative Preclinical Evaluation of Peptide-Based Chelators for the Labeling of DARPin G3 with 99mTc for Radionuclide Imaging of HER2 Expression in Cancer. Int J Mol Sci 2022; 23:13443. [PMID: 36362226 PMCID: PMC9653920 DOI: 10.3390/ijms232113443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 11/15/2023] Open
Abstract
Non-invasive radionuclide imaging of human epidermal growth factor receptor type 2 (HER2) expression in breast, gastroesophageal, and ovarian cancers may stratify patients for treatment using HER2-targeted therapeutics. Designed ankyrin repeat proteins (DARPins) are a promising type of targeting probe for radionuclide imaging. In clinical studies, the DARPin [99mTc]Tc-(HE)3-G3 labeled using a peptide-based chelator His-Glu-His-Glu-His-Glu ((HE)3), provided clear imaging of HER2 expressing breast cancer 2-4 h after injection. The goal of this study was to evaluate if the use of cysteine-containing peptide-based chelators Glu-Glu-Glu-Cys (E3C), Gly-Gly-Gly-Cys (G3C), and Gly-Gly-Gly-Ser-Cys connected via a (Gly-Gly-Gly-Ser)3-linker (designated as G3-(G3S)3C) would further improve the contrast of imaging using 99mTc-labeled derivatives of G3. The labeling of the new variants of G3 provided a radiochemical yield of over 95%. Labeled G3 variants bound specifically to human HER2-expressing cancer cell lines with affinities in the range of 1.9-5 nM. Biodistribution of [99mTc]Tc-G3-G3C, [99mTc]Tc-G3-(G3S)3C, and [99mTc]Tc-G3-E3C in mice was compared with the biodistribution of [99mTc]Tc-(HE)3-G3. It was found that the novel variants provide specific accumulation in HER2-expressing human xenografts and enable discrimination between tumors with high and low HER2 expression. However, [99mTc]Tc-(HE)3-G3 provided better contrast between tumors and the most frequent metastatic sites of HER2-expressing cancers and is therefore more suitable for clinical applications.
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Affiliation(s)
- Mariia Larkina
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Evgenii Plotnikov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Ekaterina Bezverkhniaia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Yulia Shabanova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Maria Tretyakova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Feruza Yuldasheva
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Roman Zelchan
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, 634009 Tomsk, Russia
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Elena Konovalova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 75185 Uppsala, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, 75185 Uppsala, Sweden
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 11417 Stockholm, Sweden
| | - Torbjörn Gräslund
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, 11417 Stockholm, Sweden
| | - Mikhail Belousov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Pharmaceutical Analysis, Siberian State Medical University, 634050 Tomsk, Russia
| | - Vladimir Tolmachev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Immunology, Genetics and Pathology, Uppsala University, 75185 Uppsala, Sweden
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
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10
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Ehsasatvatan M, Kohnehrouz BB, Gholizadeh A, Ofoghi H, Shanehbandi D. The production of the first functional antibody mimetic in higher plants: the chloroplast makes the DARPin G3 for HER2 imaging in oncology. Biol Res 2022; 55:32. [PMID: 36274167 PMCID: PMC9590205 DOI: 10.1186/s40659-022-00400-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 10/12/2022] [Indexed: 12/05/2022] Open
Abstract
Background Designed mimetic molecules are attractive tools in biopharmaceuticals and synthetic biology. They require mass and functional production for the assessment of upcoming challenges in the near future. The DARPin family is considered a mimetic pharmaceutical peptide group with high affinity binding to specific targets. DARPin G3 is designed to bind to the HER2 (human epidermal growth factor receptor 2) tyrosine kinase receptor. Overexpression of HER2 is common in some cancers, including breast cancer, and can be used as a prognostic and predictive tool for cancer. The chloroplasts are cost-effective alternatives, equal to, and sometimes better than, bacterial, yeast, or mammalian expression systems. This research examined the possibility of the production of the first antibody mimetic, DARPin G3, in tobacco chloroplasts for HER2 imaging in oncology. Results The chloroplast specific DARPin G3 expression cassette was constructed and transformed into N. tabacum chloroplasts. PCR and Southern blot analysis confirmed integration of transgenes as well as chloroplastic and cellular homoplasmy. The Western blot analysis and ELISA confirmed the production of DARPin G3 at the commercial scale and high dose with the rate of 20.2% in leaf TSP and 33.7% in chloroplast TSP. The functional analysis by ELISA confirmed the binding of IMAC purified chloroplast-made DARPin G3 to the extracellular domain of the HER2 receptor with highly effective picomolar affinities. The carcinoma cellular studies by flow cytometry and immunofluorescence microscopy confirmed the correct functioning by the specific binding of the chloroplast-made DARPin G3 to the HER2 receptor on the surface of HER2-positive cancer cell lines. Conclusion The efficient functional bioactive production of DARPin G3 in chloroplasts led us to introduce plant chloroplasts as the site of efficient production of the first antibody mimetic molecules. This report, as the first case of the cost-effective production of mimetic molecules, enables researchers in pharmaceuticals, synthetic biology, and bio-molecular engineering to develop tool boxes by producing new molecular substitutes for diverse purposes.
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11
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Enzymatic Construction of DARPin-Based Targeted Delivery Systems Using Protein Farnesyltransferase and a Capture and Release Strategy. Int J Mol Sci 2022; 23:ijms231911537. [PMID: 36232839 PMCID: PMC9569580 DOI: 10.3390/ijms231911537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/22/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Protein-based conjugates have been extensively utilized in various biotechnological and therapeutic applications. In order to prepare homogeneous conjugates, site-specific modification methods and efficient purification strategies are both critical factors to be considered. The development of general and facile conjugation and purification strategies is therefore highly desirable. Here, we apply a capture and release strategy to create protein conjugates based on Designed Ankyrin Repeat Proteins (DARPins), which are engineered antigen-binding proteins with prominent affinity and selectivity. In this case, DARPins that target the epithelial cell adhesion molecule (EpCAM), a diagnostic cell surface marker for many types of cancer, were employed. The DARPins were first genetically modified with a C-terminal CVIA sequence to install an enzyme recognition site and then labeled with an aldehyde functional group employing protein farnesyltransferase. Using a capture and release strategy, conjugation of the labeled DARPins to a TAMRA fluorophore was achieved with either purified proteins or directly from crude E. coli lysate and used in subsequent flow cytometry and confocal imaging analysis. DARPin-MMAE conjugates were also prepared yielding a construct manifesting an IC50 of 1.3 nM for cell killing of EpCAM positive MCF-7 cells. The method described here is broadly applicable to enable the streamlined one-step preparation of protein-based conjugates.
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12
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Altunay B, Morgenroth A, Mottaghy FM. Use of Radionuclide-Based Imaging Methods in Breast Cancer. Semin Nucl Med 2022; 52:561-573. [PMID: 35624034 DOI: 10.1053/j.semnuclmed.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/07/2022] [Accepted: 04/13/2022] [Indexed: 12/21/2022]
Abstract
Breast cancer is one of the most commonly occurring cancers in women globally and is the primary cause of cancer mortality in females. Thus, early and effective breast cancer diagnosis is crucial for enhancing the survival rate. Current standard diagnostic techniques to assess the hormone receptor status in biopsies include immunohistochemistry and fluorescence in situ hybridization. However, in recent years, there has been an increase in research on noninvasive techniques for molecular imaging of hormone receptors. These methods offer many advantages over conventional imaging, as repeated measurements can be used to capture heterogeneous tumor expression throughout the body, as well as transformations in receptor status during disease progression. Thus, the noninvasive method, as an adjunct to conventional imaging, offers the potential to improve patient selection, optimize dose and schedule, and streamline the assessment of response.
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Affiliation(s)
- Betül Altunay
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Agnieszka Morgenroth
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Felix M Mottaghy
- Department of Nuclear Medicine, University Hospital Aachen, RWTH Aachen University, Aachen, Germany; Center of Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne, Germany; Department of Radiology and Nuclear Medicine, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands.
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13
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Fay R, Törő I, Schinke AL, Simic B, Schaefer JV, Dreier B, Plückthun A, Holland JP. Sortase-Mediated Site-Specific Conjugation and 89Zr-Radiolabeling of Designed Ankyrin Repeat Proteins for PET. Mol Pharm 2022; 19:3576-3585. [DOI: 10.1021/acs.molpharmaceut.2c00136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rachael Fay
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Imre Törő
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Anna-Lena Schinke
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Branko Simic
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jonas V. Schaefer
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Birgit Dreier
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Andreas Plückthun
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jason P. Holland
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
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14
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Bragina O, Chernov V, Schulga A, Konovalova E, Garbukov E, Vorobyeva A, Orlova A, Tashireva L, Sörensen J, Zelchan R, Medvedeva A, Deyev S, Tolmachev V. Phase I Trial of 99mTc-(HE) 3-G3, a DARPin-Based Probe for Imaging of HER2 Expression in Breast Cancer. J Nucl Med 2022; 63:528-535. [PMID: 34385343 PMCID: PMC8973295 DOI: 10.2967/jnumed.121.262542] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
Radionuclide molecular imaging of human epidermal growth factor receptor type 2 (HER2) expression may enable a noninvasive discrimination between HER2-positive and HER2-negative breast cancers for stratification of patients for HER2-targeted treatments. DARPin (designed ankyrin repeat proteins) G3 is a small (molecular weight, 14 kDa) scaffold protein with picomolar affinity to HER2. The aim of this first-in-humans study was to evaluate the safety, biodistribution, and dosimetry of 99mTc-(HE)3-G3. Methods: Three cohorts of patients with primary breast cancer (each including at least 4 patients with HER2-negative and 5 patients with HER2-positive tumors) were injected with 1,000, 2,000, or 3,000 μg of 99mTc-(HE)3-G3 (287 ± 170 MBq). Whole-body planar imaging followed by SPECT was performed at 2, 4, 6, and 24 h after injection. Vital signs and possible side effects were monitored during imaging and up to 7 d after injection. Results: All injections were well tolerated. No side effects were observed. The results of blood and urine analyses did not differ before and after studies. 99mTc-(HE)3-G3 cleared rapidly from the blood. The highest uptake was detected in the kidneys and liver followed by the lungs, breasts, and small intestinal content. The hepatic uptake after injection of 2,000 or 3,000 μg was significantly (P < 0.05) lower than the uptake after injection of 1,000 μg. Effective doses did not differ significantly between cohorts (average, 0.011 ± 0.004 mSv/MBq). Tumor-to-contralateral site ratios for HER-positive tumors were significantly (P < 0.05) higher than for HER2-negative at 2 and 4 h after injection. Conclusion: Imaging of HER2 expression using 99mTc-(HE)3-G3 is safe and well tolerated and provides a low absorbed dose burden on patients. This imaging enables discernment of HER2-positive and HER2-negative breast cancer. Phase I study data justify further clinical development of 99mTc-(HE)3-G3.
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Affiliation(s)
- Olga Bragina
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
| | - Vladimir Chernov
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Elena Konovalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Eugeniy Garbukov
- Department of General Oncology, Cancer Research Institute, Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
| | - Anzhelika Vorobyeva
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Anna Orlova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Liubov Tashireva
- Department of General and Molecular Pathology, Tomsk National Research Medical Center, Tomsk, Russia; and
| | - Jens Sörensen
- Radiology and Nuclear Medicine, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Roman Zelchan
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
| | - Anna Medvedeva
- Department of Nuclear Medicine, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Vladimir Tolmachev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia;
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
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15
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Xu T, Liu Y, Schulga A, Konovalova E, Deyev S, Tolmachev V, Vorobyeva A. Epithelial cell adhesion molecule‑targeting designed ankyrin repeat protein‑toxin fusion Ec1‑LoPE exhibits potent cytotoxic action in prostate cancer cells. Oncol Rep 2022; 47:94. [PMID: 35315504 PMCID: PMC8968790 DOI: 10.3892/or.2022.8305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/08/2022] [Indexed: 11/13/2022] Open
Abstract
Targeted anticancer therapeutics offer the advantage of reducing cytotoxic side effects to normal cells by directing the cytotoxic payload selectively to cancer cells. Designed ankyrin repeat proteins (DARPins) are promising non-immunoglobulin-based scaffold proteins for payload delivery to cancer-associated molecular targets. Epithelial cell adhesion molecule (EpCAM) is overexpressed in 40–60% of prostate cancers (PCs) and is associated with metastasis, increased risk of PC recurrence and resistance to treatment. Here, we investigated the use of DARPin Ec1 for targeted delivery of Pseudomonas exotoxin A variant (LoPE) with low immunogenicity and low non-specific toxicity to EpCAM-expressing prostate cancer cells. Ec1-LoPE fusion protein was radiolabeled with tricarbonyl technetium-99m and its binding specificity, binding kinetics, cellular processing, internalization and cytotoxicity were evaluated in PC-3 and DU145 cell lines. Ec1-LoPE showed EpCAM-specific binding to EpCAM-expressing prostate cancer cells. Rapid internalization mediated potent cytotoxic effect with picomolar IC50 values in both studied cell lines. Taken together, these data support further evaluation of Ec1-LoPE in a therapeutic setting in a prostate cancer model in vivo.
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Affiliation(s)
- Tianqi Xu
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Yongsheng Liu
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin‑Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
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16
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Tolmachev VM, Chernov VI, Deyev SM. Targeted nuclear medicine. Seek and destroy. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Non-Antibody-Based Binders for the Enrichment of Proteins for Analysis by Mass Spectrometry. Biomolecules 2021; 11:biom11121791. [PMID: 34944435 PMCID: PMC8698613 DOI: 10.3390/biom11121791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 02/07/2023] Open
Abstract
There is often a need to isolate proteins from body fluids, such as plasma or serum, prior to further analysis with (targeted) mass spectrometry. Although immunoglobulin or antibody-based binders have been successful in this regard, they possess certain disadvantages, which stimulated the development and validation of alternative, non-antibody-based binders. These binders are based on different protein scaffolds and are often selected and optimized using phage or other display technologies. This review focuses on several non-antibody-based binders in the context of enriching proteins for subsequent liquid chromatography-mass spectrometry (LC-MS) analysis and compares them to antibodies. In addition, we give a brief introduction to approaches for the immobilization of binders. The combination of non-antibody-based binders and targeted mass spectrometry is promising in areas, like regulated bioanalysis of therapeutic proteins or the quantification of biomarkers. However, the rather limited commercial availability of these binders presents a bottleneck that needs to be addressed.
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18
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Yin W, Xu T, Altai M, Oroujeni M, Zhang J, Vorobyeva A, Vorontsova O, Vtorushin SV, Tolmachev V, Gräslund T, Orlova A. The Influence of Domain Permutations of an Albumin-Binding Domain-Fused HER2-Targeting Affibody-Based Drug Conjugate on Tumor Cell Proliferation and Therapy Efficacy. Pharmaceutics 2021; 13:1974. [PMID: 34834389 PMCID: PMC8617914 DOI: 10.3390/pharmaceutics13111974] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/08/2021] [Accepted: 11/16/2021] [Indexed: 01/01/2023] Open
Abstract
Human epidermal growth factor receptor 2 (HER2) is a clinically validated target for breast cancer therapy. Previously, a drug-fused HER2-targeting affinity protein construct successfully extended the survival of mice bearing HER2-expressing xenografts. The aim of this study was to evaluate the influence of the number and positioning of the protein domains in the drug conjugate. Seven HER2-targeting affibody-based constructs, including one or two affibody molecules (Z) with or without an albumin-binding domain (ABD), namely Z, Z-ABD, ABD-Z, Z-Z, Z-Z-ABD, Z-ABD-Z, and ABD-Z-Z, were evaluated on their effects on cell growth, in vivo targeting, and biodistribution. The biodistribution study demonstrated that the monomeric constructs had longer blood retention and lower hepatic uptake than the dimeric ones. A dimeric construct, specifically ABD-Z-Z, could stimulate the proliferation of HER2 expressing SKOV-3 cells in vitro and the growth of tumors in vivo, whereas the monomeric construct Z-ABD could not. These two constructs demonstrated a therapeutic effect when coupled to mcDM1; however, the effect was more pronounced for the non-stimulating Z-ABD. The median survival of the mice treated with Z-ABD-mcDM1 was 63 days compared to the 37 days for those treated with ABD-Z-Z-mcDM1 or for the control animals. Domain permutation of an ABD-fused HER2-targeting affibody-based drug conjugate significantly influences tumor cell proliferation and therapy efficacy. The monomeric conjugate Z-ABD is the most promising format for targeted delivery of the cytotoxic drug DM1.
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Affiliation(s)
- Wen Yin
- Department of Protein Science, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden; (W.Y.); (J.Z.)
| | - Tianqi Xu
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
| | - Mohamed Altai
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
- Division of Oncology, Department of Clinical Sciences Lund, Lund University, 221 84 Lund, Sweden
| | - Maryam Oroujeni
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
| | - Jie Zhang
- Department of Protein Science, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden; (W.Y.); (J.Z.)
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
| | - Olga Vorontsova
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
| | - Sergey V. Vtorushin
- Pathology Department, Siberian State Medical University, 634050 Tomsk, Russia;
- General and Molecular Pathology Department, Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, 634009 Tomsk, Russia
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden; (T.X.); (M.A.); (M.O.); (A.V.); (O.V.); (V.T.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Torbjörn Gräslund
- Department of Protein Science, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden; (W.Y.); (J.Z.)
| | - Anna Orlova
- Pathology Department, Siberian State Medical University, 634050 Tomsk, Russia;
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden
- Science for Life Laboratory, Uppsala University, 752 37 Uppsala, Sweden
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19
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Shin C, Kim SS, Jo YH. Extending traditional antibody therapies: Novel discoveries in immunotherapy and clinical applications. Mol Ther Oncolytics 2021; 22:166-179. [PMID: 34514097 PMCID: PMC8416972 DOI: 10.1016/j.omto.2021.08.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Immunotherapy has been well regarded as one of the safer and antigen-specific anti-cancer treatments compared to first-generation chemotherapy. Since Coley's discovery, researchers focused on engineering novel antibody-based therapies. Including artificial and modified antibodies, such as antibody fragments, antibody-drug conjugates, and synthetic mimetics, the variety of immunotherapy has been rapidly expanding in the last few decades. Genetic and chemical modifications to monoclonal antibody have been brought into academia, in vivo trials, and clinical applications. Here, we have looked around antibodies overall. First, we elucidate the antibody structure and its cytotoxicity mechanisms. Second, types of therapeutic antibodies are presented. Additionally, there is a summarized list of US Food and Drug Administration (FDA)-approved therapeutic antibodies and recent clinical trials. This review provides a comprehensive overview of both the general function of therapeutic antibodies and a few main variations in development, including recent advent with the proposed mechanism of actions, and we introduce types of therapeutic antibodies, clinical trials, and approved commercial immunotherapeutic drugs.
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Affiliation(s)
- Charles Shin
- Chadwick International, Incheon 22002, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Sung Soo Kim
- Biomedical Science Institute, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Yong Hwa Jo
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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20
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Imaging-Guided Therapy Simultaneously Targeting HER2 and EpCAM with Trastuzumab and EpCAM-Directed Toxin Provides Additive Effect in Ovarian Cancer Model. Cancers (Basel) 2021; 13:cancers13163939. [PMID: 34439094 PMCID: PMC8393281 DOI: 10.3390/cancers13163939] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/23/2021] [Accepted: 08/02/2021] [Indexed: 12/29/2022] Open
Abstract
Efficient treatment of disseminated ovarian cancer (OC) is challenging due to its heterogeneity and chemoresistance. Overexpression of human epidermal growth factor receptor 2 (HER2) and epithelial cell adhesion molecule (EpCAM) in approx. 30% and 70% of ovarian cancers, respectively, allows for co-targeted treatment. The clinical efficacy of the monoclonal antibody trastuzumab in patients with HER2-positive breast, gastric and gastroesophageal cancers makes it readily available as the HER2-targeting component. As the EpCAM-targeting component, we investigated the designed ankyrin repeat protein (DARPin) Ec1 fused to a truncated variant of Pseudomonas exotoxin A with reduced immunogenicity and low general toxicity (LoPE). Ec1-LoPE was radiolabeled, evaluated in ovarian cancer cells in vitro and its biodistribution and tumor-targeting properties were studied in vivo. The therapeutic efficacy of Ec1-LoPE alone and in combination with trastuzumab was studied in mice bearing EpCAM- and HER2-expressing SKOV3 xenografts. SPECT/CT imaging enabled visualization of EpCAM and HER2 expression in the tumors. Co-treatment using Ec1-LoPE and trastuzumab was more effective at reducing tumor growth and prolonged the median survival of mice compared with mice in the control and monotherapy groups. Repeated administration of Ec1-LoPE was well tolerated without signs of hepatic or kidney toxicity. Co-treatment with trastuzumab and Ec1-LoPE might be a potential therapeutic strategy for HER2- and EpCAM-positive OC.
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21
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Rinne SS, Orlova A, Tolmachev V. PET and SPECT Imaging of the EGFR Family (RTK Class I) in Oncology. Int J Mol Sci 2021; 22:ijms22073663. [PMID: 33915894 PMCID: PMC8036874 DOI: 10.3390/ijms22073663] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/24/2021] [Accepted: 03/29/2021] [Indexed: 12/12/2022] Open
Abstract
The human epidermal growth factor receptor family (EGFR-family, other designations: HER family, RTK Class I) is strongly linked to oncogenic transformation. Its members are frequently overexpressed in cancer and have become attractive targets for cancer therapy. To ensure effective patient care, potential responders to HER-targeted therapy need to be identified. Radionuclide molecular imaging can be a key asset for the detection of overexpression of EGFR-family members. It meets the need for repeatable whole-body assessment of the molecular disease profile, solving problems of heterogeneity and expression alterations over time. Tracer development is a multifactorial process. The optimal tracer design depends on the application and the particular challenges of the molecular target (target expression in tumors, endogenous expression in healthy tissue, accessibility). We have herein summarized the recent preclinical and clinical data on agents for Positron Emission Tomography (PET) and Single Photon Emission Tomography (SPECT) imaging of EGFR-family receptors in oncology. Antibody-based tracers are still extensively investigated. However, their dominance starts to be challenged by a number of tracers based on different classes of targeting proteins. Among these, engineered scaffold proteins (ESP) and single domain antibodies (sdAb) show highly encouraging results in clinical studies marking a noticeable trend towards the use of smaller sized agents for HER imaging.
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Affiliation(s)
- Sara S. Rinne
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden; (S.S.R.); (A.O.)
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden; (S.S.R.); (A.O.)
- Science for Life Laboratory, Uppsala University, 752 37 Uppsala, Sweden
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
| | - Vladimir Tolmachev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia
- Department of Immunology, Genetics and Pathology, Uppsala University, 752 37 Uppsala, Sweden
- Correspondence: ; Tel.: +46-704-250-782
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22
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Ghavami M, Vraka C, Hubert V, Schachner H, Bamminger K, Hacker M, Kain R, Moghadam MF. Radiolabeled HER2-directed exosomes exhibit improved cell targeting and specificity. Nanomedicine (Lond) 2021; 16:553-567. [PMID: 33728944 DOI: 10.2217/nnm-2020-0408] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Aim: Here, we established a reliable strategy for generation and characterization of targeted radiolabeled exosomes for the detection of HER2-positive cells quantitatively. Materials & methods: Targeted exosomes (T-exos) were radiolabeled by two different radiotracers, [99mTc]Tc-HMPAO or [111In]In-oxine. The labeling efficiency and stability were assessed using exosome exclusive spin columns. HER2-positive and -negative cells were treated with [111In]In-oxine-exosomes after 3 and 24 h. Results: [111In]In-oxine labeling did not change the binding ability and general features of the exosomes. With [111In]In-oxine, 70% labeling efficiency and 78% radiochemical stability over 24 h were achieved. [111In]In-oxine-T-exos showed greater uptake by HER2-positive cells compared with untargeted exosomes. Conclusion: [111In]In-oxine-T-exos could potentially be used as an effective imaging tool for HER2 expression.
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Affiliation(s)
- Mahlegha Ghavami
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14117-13116, Iran
| | - Chrysoula Vraka
- Department of Biomedical Imaging & Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Virginie Hubert
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Helga Schachner
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Karsten Bamminger
- Department of Biomedical Imaging & Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Marcus Hacker
- Department of Biomedical Imaging & Image-guided Therapy, Division of Nuclear Medicine, Medical University of Vienna, Vienna, Austria
| | - Renate Kain
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Mehdi Forouzandeh Moghadam
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14117-13116, Iran
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23
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Oroujeni M, Rinne SS, Vorobyeva A, Loftenius A, Feldwisch J, Jonasson P, Chernov V, Orlova A, Frejd FY, Tolmachev V. Preclinical Evaluation of 99mTc-ZHER2:41071, a Second-Generation Affibody-Based HER2-Visualizing Imaging Probe with a Low Renal Uptake. Int J Mol Sci 2021; 22:ijms22052770. [PMID: 33803361 PMCID: PMC7967187 DOI: 10.3390/ijms22052770] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/28/2021] [Accepted: 03/01/2021] [Indexed: 12/20/2022] Open
Abstract
Radionuclide imaging of HER2 expression in tumours may enable stratification of patients with breast, ovarian, and gastroesophageal cancers for HER2-targeting therapies. A first-generation HER2-binding affibody molecule [99mTc]Tc-ZHER2:V2 demonstrated favorable imaging properties in preclinical studies. Thereafter, the affibody scaffold has been extensively modified, which increased its melting point, improved storage stability, and increased hydrophilicity of the surface. In this study, a second-generation affibody molecule (designated ZHER2:41071) with a new improved scaffold has been prepared and characterized. HER2-binding, biodistribution, and tumour-targeting properties of [99mTc]Tc-labelled ZHER2:41071 were investigated. These properties were compared with properties of the first-generation affibody molecules, [99mTc]Tc-ZHER2:V2 and [99mTc]Tc-ZHER2:2395. [99mTc]Tc-ZHER2:41071 bound specifically to HER2 expressing cells with an affinity of 58 ± 2 pM. The renal uptake for [99mTc]Tc-ZHER2:41071 and [99mTc]Tc-ZHER2:V2 was 25–30 fold lower when compared with [99mTc]Tc-ZHER2:2395. The uptake in tumour and kidney for [99mTc]Tc-ZHER2:41071 and [99mTc]Tc-ZHER2:V2 in SKOV-3 xenografts was similar. In conclusion, an extensive re-engineering of the scaffold did not compromise imaging properties of the affibody molecule labelled with 99mTc using a GGGC chelator. The new probe, [99mTc]Tc-ZHER2:41071 provided the best tumour-to-blood ratio compared to HER2-imaging probes for single photon emission computed tomography (SPECT) described in the literature so far. [99mTc]Tc-ZHER2:41071 is a promising candidate for further clinical translation studies.
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MESH Headings
- Animals
- Antineoplastic Agents, Immunological/chemistry
- Antineoplastic Agents, Immunological/pharmacokinetics
- Antineoplastic Agents, Immunological/pharmacology
- Cell Line, Tumor
- Female
- Humans
- Kidney/diagnostic imaging
- Kidney/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Neoplasms, Experimental/diagnostic imaging
- Neoplasms, Experimental/drug therapy
- Neoplasms, Experimental/metabolism
- Radiopharmaceuticals/chemical synthesis
- Radiopharmaceuticals/chemistry
- Radiopharmaceuticals/pharmacokinetics
- Radiopharmaceuticals/pharmacology
- Receptor, ErbB-2/metabolism
- Technetium/chemistry
- Technetium/pharmacokinetics
- Technetium/pharmacology
- Tissue Distribution
- Tomography, Emission-Computed, Single-Photon
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Maryam Oroujeni
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
| | - Sara S. Rinne
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
| | | | | | - Per Jonasson
- Affibody AB, 171 65 Solna, Sweden; (A.L.); (J.F.); (P.J.)
| | - Vladimir Chernov
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Nuclear Medicine Department, Cancer Research Institute, Tomsk National Research Medical Center Russian Academy of Sciences, 634009 Tomsk, Russia
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Correspondence: ; Tel.: +46-073-9922846
| | - Fredrik Y. Frejd
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Affibody AB, 171 65 Solna, Sweden; (A.L.); (J.F.); (P.J.)
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (M.O.); (A.V.); (F.Y.F.); (V.T.)
- Department of Medicinal Chemistry, Uppsala University, 751 83 Uppsala, Sweden;
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24
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Tolmachev V, Orlova A, Sörensen J. The emerging role of radionuclide molecular imaging of HER2 expression in breast cancer. Semin Cancer Biol 2021; 72:185-197. [PMID: 33465471 DOI: 10.1016/j.semcancer.2020.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 10/13/2020] [Indexed: 12/11/2022]
Abstract
Targeting of human epidermal growth factor type 2 (HER2) using monoclonal antibodies, antibody-drug conjugates and tyrosine kinase inhibitors extends survival of patients with HER2-expressing metastatic breast cancer. High expression of HER2 is a predictive biomarker for such specific treatment. Accurate determination of HER2 expression level is necessary for stratification of patients to targeted therapy. Non-invasive in vivo radionuclide molecular imaging of HER2 has a potential of repetitive measurements, addressing issues of heterogeneous expression and conversion of HER2 status during disease progression or in response to therapy. Imaging probes based of several classes of targeting proteins are currently in preclinical and early clinical development. Both preclinical and clinical data suggest that the most promising are imaging agents based on small proteins, such as single domain antibodies or engineered scaffold proteins. These agents permit a very specific high-contrast imaging at the day of injection.
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Affiliation(s)
- Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden; Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia.
| | - Anna Orlova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk, Russia; Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden; Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jens Sörensen
- Division of Radiology and Nuclear Medicine, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
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25
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Mukai H, Watanabe Y. Review: PET imaging with macro- and middle-sized molecular probes. Nucl Med Biol 2021; 92:156-170. [PMID: 32660789 DOI: 10.1016/j.nucmedbio.2020.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 12/16/2022]
Abstract
Recent progress in radiolabeling of macro- and middle-sized molecular probes has been extending possibilities to use PET molecular imaging for dynamic application to drug development and therapeutic evaluation. Theranostics concept also accelerated the use of macro- and middle-sized molecular probes for sharpening the contrast of proper target recognition even the cellular types/subtypes and proper selection of the patients who should be treated by the same molecules recognition. Here, brief summary of the present status of immuno-PET, and then further development of advanced technologies related to immuno-PET, peptidic PET probes, and nucleic acids PET probes are described.
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Affiliation(s)
- Hidefumi Mukai
- Laboratory for Molecular Delivery and Imaging Technology, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
| | - Yasuyoshi Watanabe
- Laboratory for Pathophysiological and Health Science, RIKEN Center for Biosystems Dynamics Research, 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
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26
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von Witting E, Lindbo S, Lundqvist M, Möller M, Wisniewski A, Kanje S, Rockberg J, Tegel H, Åstrand M, Uhlén M, Hober S. Small Bispecific Affinity Proteins for Simultaneous Target Binding and Albumin-Associated Half-Life Extension. Mol Pharm 2020; 18:328-337. [PMID: 33259222 PMCID: PMC9490751 DOI: 10.1021/acs.molpharmaceut.0c00975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Albumin-binding fusion partners are
frequently used as a means
for the in vivo half-life extension of small therapeutic
molecules that would normally be cleared very rapidly from circulation.
However, in applications where small size is key, fusion to an additional
molecule can be disadvantageous. Albumin-derived affinity proteins
(ADAPTs) are a new type of scaffold proteins based on one of the albumin-binding
domains of streptococcal protein G, with engineered binding specificities
against numerous targets. Here, we engineered this scaffold further
and showed that this domain, as small as 6 kDa, can harbor two distinct
binding surfaces and utilize them to interact with two targets simultaneously.
These novel ADAPTs were developed to possess affinity toward both
serum albumin as well as another clinically relevant target, thus
circumventing the need for an albumin-binding fusion partner. To accomplish
this, we designed a phage display library and used it to successfully
select for single-domain bispecific binders toward a panel of targets:
TNFα, prostate-specific antigen (PSA), C-reactive protein (CRP),
renin, angiogenin, myeloid-derived growth factor (MYDGF), and insulin.
Apart from successfully identifying bispecific binders for all targets,
we also demonstrated the formation of the ternary complex consisting
of the ADAPT together with albumin and each of the five targets, TNFα,
PSA, angiogenin, MYDGF, and insulin. This simultaneous binding of
albumin and other targets presents an opportunity to combine the advantages
of small molecules with those of larger ones allowing for lower cost
of goods and noninvasive administration routes while still maintaining
a sufficient in vivo half-life.
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Affiliation(s)
- Emma von Witting
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Sarah Lindbo
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Magnus Lundqvist
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Marit Möller
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Andreas Wisniewski
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Sara Kanje
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Johan Rockberg
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Hanna Tegel
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Mikael Åstrand
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Mathias Uhlén
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
| | - Sophia Hober
- Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm 10691, Sweden
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27
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Investigation of a Pharmacological Approach for Reduction of Renal Uptake of Radiolabeled ADAPT Scaffold Protein. Molecules 2020; 25:molecules25194448. [PMID: 32998229 PMCID: PMC7583817 DOI: 10.3390/molecules25194448] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022] Open
Abstract
Albumin binding domain-Derived Affinity ProTeins (ADAPTs) are small (5 kDa) engineered scaffold proteins that are promising targeting agents for radionuclide-based imaging. A recent clinical study has demonstrated that radiolabeled ADAPTs can efficiently visualize human epidermal growth factor receptor 2 (HER2) expression in breast cancer using SPECT imaging. However, the use of ADAPTs directly labeled with radiometals for targeted radionuclide therapy is limited by their high reabsorption and prolonged retention of activity in kidneys. In this study, we investigated whether a co-injection of lysine or gelofusin, commonly used for reduction of renal uptake of radiolabeled peptides in clinics, would reduce the renal uptake of [99mTc]Tc(CO)3-ADAPT6 in NMRI mice. In order to better understand the mechanism behind the reabsorption of [99mTc]Tc(CO)3-ADAPT6, we included several compounds that act on various parts of the reabsorption system in kidneys. Administration of gelofusine, lysine, probenecid, furosemide, mannitol, or colchicine did not change the uptake of [99mTc]Tc(CO)3-ADAPT6 in kidneys. Sodium maleate reduced the uptake of [99mTc]Tc(CO)3-ADAPT6 to ca. 25% of the uptake in the control, a high dose of fructose (50 mmol/kg) reduced the uptake by ca. two-fold. However, a lower dose (20 mmol/kg) had no effect. These results indicate that common clinical strategies are not effective for reduction of kidney uptake of [99mTc]Tc(CO)3-ADAPT6 and that other strategies for reduction of activity uptake or retention in kidneys should be investigated for ADAPT6.
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28
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van den Brand D, van Lith SAM, de Jong JM, Gorris MAJ, Palacio-Castañeda V, Couwenbergh ST, Goldman MRG, Ebisch I, Massuger LF, Leenders WPJ, Brock R, Verdurmen WPR. EpCAM-Binding DARPins for Targeted Photodynamic Therapy of Ovarian Cancer. Cancers (Basel) 2020; 12:E1762. [PMID: 32630661 PMCID: PMC7409335 DOI: 10.3390/cancers12071762] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022] Open
Abstract
Ovarian cancer is the most lethal gynecological malignancy due to late detection associated with dissemination throughout the abdominal cavity. Targeted photodynamic therapy (tPDT) aimed at epithelial cell adhesion molecule (EpCAM), overexpressed in over 90% of ovarian cancer metastatic lesions, is a promising novel therapeutic modality. Here, we tested the specificity and activity of conjugates of EpCAM-directed designed ankyrin repeat proteins (DARPins) with the photosensitizer IRDye 700DX in in vitro and in vivo ovarian cancer models. EpCAM-binding DARPins (Ec1: Kd = 68 pM; Ac2: Kd = 130 nM) and a control DARPin were site-specifically functionalized with fluorophores or IRDye 700DX. Conjugation of anti-EpCAM DARPins with fluorophores maintained EpCAM-specific binding in cell lines and patient-derived ovarian cancer explants. Penetration of DARPin Ec1 into tumor spheroids was slower than that of Ac2, indicative of a binding site barrier effect for Ec1. DARPin-IRDye 700DX conjugates killed EpCAM-expressing cells in a highly specific and illumination-dependent fashion in 2D and 3D cultures. Furthermore, they effectively homed to EpCAM-expressing subcutaneous OV90 xenografts in mice. In conclusion, the high activity and specificity observed in preclinical ovarian cancer models, combined with a high specificity in patient material, warrant a further investigation of EpCAM-targeted PDT for ovarian cancer.
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Affiliation(s)
- Dirk van den Brand
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Geert Grooteplein 10, 6525 GA Nijmegen, The Netherlands;
| | - Sanne A. M. van Lith
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Geert Grooteplein 10, 6525 GA Nijmegen, The Netherlands;
| | - Jelske M. de Jong
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Mark A. J. Gorris
- Department of Tumor Immunology, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 10, 6525 GA Nijmegen, The Netherlands;
| | - Valentina Palacio-Castañeda
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Stijn T. Couwenbergh
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Mark R. G. Goldman
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Inge Ebisch
- Department of Obstetrics and Gynaecology, Canisius Wilhelmina Hospital, Weg door Jonkerbos 100, 6532 SZ Nijmegen, The Netherlands;
| | - Leon F. Massuger
- Department of Obstetrics and Gynaecology, Radboud University Medical Center, Geert Grooteplein 10, 6525 GA Nijmegen, The Netherlands;
| | - William P. J. Leenders
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Roland Brock
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
| | - Wouter P. R. Verdurmen
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences (RIMLS), Radboud University Medical Center, Geert Grooteplein 28, 6525 GA Nijmegen, The Netherlands; (D.v.d.B.); (J.M.d.J.); (V.P.-C.); (S.T.C.); (M.R.G.G.); (W.P.J.L.); (R.B.)
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Imaging using radiolabelled targeted proteins: radioimmunodetection and beyond. EJNMMI Radiopharm Chem 2020; 5:16. [PMID: 32577943 PMCID: PMC7311618 DOI: 10.1186/s41181-020-00094-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Accepted: 04/14/2020] [Indexed: 12/18/2022] Open
Abstract
The use of radiolabelled antibodies was proposed in 1970s for staging of malignant tumours. Intensive research established chemistry for radiolabelling of proteins and understanding of factors determining biodistribution and targeting properties. The use of radioimmunodetection for staging of cancer was not established as common practice due to approval and widespread use of [18F]-FDG, which provided a more general diagnostic use than antibodies or their fragments. Expanded application of antibody-based therapeutics renewed the interest in radiolabelled antibodies. RadioimmunoPET emerged as a powerful tool for evaluation of pharmacokinetics of and target engagement by biotherapeutics. In addition to monoclonal antibodies, new radiolabelled engineered proteins have recently appeared, offering high-contrast imaging of expression of therapeutic molecular targets in tumours shortly after injection. This creates preconditions for noninvasive determination of a target expression level and stratification of patients for targeted therapies. Radiolabelled proteins hold great promise to play an important role in development and implementation of personalised targeted treatment of malignant tumours. This article provides an overview of biodistribution and tumour-seeking features of major classes of targeting proteins currently utilized for molecular imaging. Such information might be useful for researchers entering the field of the protein-based radionuclide molecular imaging.
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Vorobyeva A, Konovalova E, Xu T, Schulga A, Altai M, Garousi J, Rinne SS, Orlova A, Tolmachev V, Deyev S. Feasibility of Imaging EpCAM Expression in Ovarian Cancer Using Radiolabeled DARPin Ec1. Int J Mol Sci 2020; 21:ijms21093310. [PMID: 32392820 PMCID: PMC7246691 DOI: 10.3390/ijms21093310] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 02/07/2023] Open
Abstract
Epithelial cell adhesion molecule (EpCAM) is overexpressed in 55%–75% of ovarian carcinomas (OC). EpCAM might be used as a target for a treatment of disseminated OC. Designed ankyrin repeats protein (DARPin) Ec1 is a small (18 kDa) protein, which binds to EpCAM with subnanomolar affinity. We tested a hypothesis that Ec1 labeled with a non-residualizing label might serve as a companion imaging diagnostic for stratification of patients for EpCAM-targeting therapy. Ec1 was labeled with 125I using N-succinimidyl-para-iodobenzoate. Binding affinity, specificity, and cellular processing of [125I]I-PIB-Ec1 were evaluated using SKOV-3 and OVCAR-3 ovarian carcinoma cell lines. Biodistribution and tumor-targeting properties of [125I]I-PIB-Ec1 were studied in Balb/c nu/nu mice bearing SKOV-3 and OVCAR-3 xenografts. EpCAM-negative Ramos lymphoma xenografts served as specificity control. Binding of [125I]I-PIB-Ec1 to ovarian carcinoma cell lines was highly specific and had affinity in picomolar range. Slow internalization of [125I]I-PIB-Ec1 by OC cells confirmed utility of non-residualizing label for in vivo imaging. [125I]I-PIB-Ec1 provided 6 h after injection tumor-to-blood ratios of 30 ± 11 and 48 ± 12 for OVCAR-3 and SKOV-3 xenografts, respectively, and high contrast to other organs. Tumor targeting was highly specific. Saturation of tumor uptake at a high dose of Ec1 in SKOV-3 model provided a rationale for dose selection in further studies using therapeutic conjugates of Ec1 for targeted therapy. In conclusion, [125I]I-PIB-Ec1 is a promising agent for visualizing EpCAM expression in OC.
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Affiliation(s)
- Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (T.X.); (M.A.); (J.G.); (V.T.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia; (A.S.); (A.O.)
- Correspondence: ; Tel.: +46-18-471-3868
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.K.); (S.D.)
| | - Tianqi Xu
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (T.X.); (M.A.); (J.G.); (V.T.)
| | - Alexey Schulga
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia; (A.S.); (A.O.)
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.K.); (S.D.)
| | - Mohamed Altai
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (T.X.); (M.A.); (J.G.); (V.T.)
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (T.X.); (M.A.); (J.G.); (V.T.)
| | - Sara S. Rinne
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden;
| | - Anna Orlova
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia; (A.S.); (A.O.)
- Department of Medicinal Chemistry, Uppsala University, 751 23 Uppsala, Sweden;
- Science for Life Laboratory, Uppsala University, 751 23 Uppsala, Sweden
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, 751 85 Uppsala, Sweden; (T.X.); (M.A.); (J.G.); (V.T.)
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia; (A.S.); (A.O.)
| | - Sergey Deyev
- Research Centrum for Oncotheranostics, Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, 634050 Tomsk, Russia; (A.S.); (A.O.)
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia; (E.K.); (S.D.)
- Bio-Nanophotonic Lab, Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University ‘MEPhI’, 115409 Moscow, Russia
- Center of Biomedical Engineering, Sechenov University, 119991 Moscow, Russia
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31
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McCord JP, Grove TZ. Engineering repeat proteins of the immune system. Biopolymers 2020; 111:e23348. [PMID: 32031681 DOI: 10.1002/bip.23348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 08/30/2019] [Accepted: 09/06/2019] [Indexed: 11/06/2022]
Abstract
Limitations associated with immunoglobulins have motivated the search for novel binding scaffolds. Repeat proteins have emerged as one promising class of scaffolds, but often are limited to binding protein and peptide targets. An exception is the repeat proteins of the immune system, which have in recent years served as an inspiration for binding scaffolds which can bind glycans and other classes of biomolecule. Like other repeat proteins, these proteins can be very stable and have a monomeric mode of binding, with elongated and highly variable binding surfaces. The ability to target glycans and glycoproteins fill an important gap in current tools for research and biomedical applications.
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Affiliation(s)
- Jennifer P McCord
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, U.S.A
| | - Tijana Z Grove
- Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, VA, U.S.A.,Zarkovic Grove Consulting, LLC, Blacksburg, VA, U.S.A
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Altai M, Garousi J, Rinne SS, Schulga A, Deyev S, Vorobyeva A. On the prevention of kidney uptake of radiolabeled DARPins. EJNMMI Res 2020; 10:7. [PMID: 32020413 PMCID: PMC7000568 DOI: 10.1186/s13550-020-0599-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 01/17/2020] [Indexed: 12/27/2022] Open
Abstract
Background Designed ankyrin repeat proteins (DARPins) are small engineered scaffold proteins (14–18 kDa) that demonstrated promising tumor-targeting properties in preclinical studies. However, high renal accumulation of activity for DARPins labeled with residualizing labels is a limitation for targeted radionuclide therapy. A better understanding of the mechanisms behind the kidney uptake of DARPins could aid the development of strategies to reduce it. In this study, we have investigated whether the renal uptake of [99mTc]Tc(CO)3-G3 DARPin could be reduced by administration of compounds that act on various parts of the reabsorption system in the kidney. Results Co-injection of lysine or Gelofusine was not effective for the reduction of kidney uptake of [99mTc]Tc(CO)3-G3. Administration of sodium maleate before the injection of [99mTc]Tc(CO)3-G3 reduced the kidney-associated activity by 60.4 ± 10.3%, while administration of fructose reduced it by 46.9 ± 7.6% compared with the control. The decrease in the kidney uptake provided by sodium maleate was also observed for [99mTc]Tc(CO)3-9_29 DARPin. Preinjection of colchicine, probenecid, mannitol, or furosemide had no effect on the kidney uptake of [99mTc]Tc(CO)3-G3. Kidney autoradiography showed mainly cortical accumulation of activity for all studied groups. Conclusion Common clinical strategies were not effective for the reduction of kidney uptake of [99mTc]Tc(CO)3-G3. Both fructose and maleate lower the cellular ATP level in the proximal tubule cells and their reduction of the kidney reuptake indicates the involvement of an ATP-driven uptake mechanism. The decrease provided by maleate for both G3 and 9_29 DARPins indicates that their uptake proceeds through a mechanism independent of DARPin structure and binding site composition.
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Affiliation(s)
- Mohamed Altai
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185, Uppsala, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185, Uppsala, Sweden
| | - Sara S Rinne
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Alexey Schulga
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Sergey Deyev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,National Research Tomsk Polytechnic University, Tomsk, Russia.,Center of Biomedical Engineering, Sechenov University, Moscow, Russia
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185, Uppsala, Sweden. .,National Research Tomsk Polytechnic University, Tomsk, Russia.
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Deyev SM, Vorobyeva A, Schulga A, Abouzayed A, Günther T, Garousi J, Konovalova E, Ding H, Gräslund T, Orlova A, Tolmachev V. Effect of a radiolabel biochemical nature on tumor-targeting properties of EpCAM-binding engineered scaffold protein DARPin Ec1. Int J Biol Macromol 2019; 145:216-225. [PMID: 31863835 DOI: 10.1016/j.ijbiomac.2019.12.147] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 12/17/2019] [Accepted: 12/17/2019] [Indexed: 12/27/2022]
Abstract
Radionuclide-based imaging of molecular therapeutic targets might facilitate stratifying patients for specific biotherapeutics. New type of imaging probes, based on designed ankyrin repeat proteins (DARPins), have demonstrated excellent contrast of imaging of human epidermal growth factor type 2 (HER2) expression in preclinical models. We hypothesized that labeling approaches, which result in lipophilic radiometabolites (non-residualizing labels), would provide the best imaging contrast for DARPins that internalize slowly after binding to cancer cells. The hypothesis was tested using DARPin Ec1 that binds to epithelial cell adhesion molecule (EpCAM). EpCAM is a promising therapeutic target. Ec1 was labeled with 125I using two methods to obtain the non-residualizing labels, while residualizing labels were obtained by labeling it with 99mTc. All labeled Ec1 variants preserved target specificity and picomolar binding affinity to EpCAM-expressing pancreatic adenocarcinoma BxPC-3 cells. In murine models, all the variants provided similar tumor uptake. However, 125I-PIB-H6-Ec1 had noticeably lower retention in normal tissues, which provided appreciably higher tumor-to-organ ratios. Furthermore, 125I-PIB-H6-Ec1 demonstrated the highest imaging contrast in preclinical models than any other EpCAM-imaging agent tested so far. In conclusion, DARPin Ec1 in combination with a non-residualizing label is a promising probe for imaging EpCAM expression a few hours after injection.
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Affiliation(s)
- Sergey M Deyev
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia; Research School of Chemistry and Applied Biomedical Sciences, Research Tomsk Polytechnic University, Tomsk, Russia; Center of Biomedical Engineering, Sechenov University, Moscow, Russia
| | - Anzhelika Vorobyeva
- Research School of Chemistry and Applied Biomedical Sciences, Research Tomsk Polytechnic University, Tomsk, Russia; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Alexey Schulga
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia; Research School of Chemistry and Applied Biomedical Sciences, Research Tomsk Polytechnic University, Tomsk, Russia
| | - Ayman Abouzayed
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Tyran Günther
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Haozhong Ding
- Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Torbjörn Gräslund
- Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Anna Orlova
- Research School of Chemistry and Applied Biomedical Sciences, Research Tomsk Polytechnic University, Tomsk, Russia; Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden; Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Vladimir Tolmachev
- Research School of Chemistry and Applied Biomedical Sciences, Research Tomsk Polytechnic University, Tomsk, Russia; Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
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Bragina OD, Chernov VI, Zeltchan RV, Sinilkin IG, Medvedeva AA, Larkina MS. Alternative scaffolds in radionuclide diagnosis of malignancies. BULLETIN OF SIBERIAN MEDICINE 2019. [DOI: 10.20538/1682-0363-2019-3-125-133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review discusses a relatively new class of targeted molecules that is being actively studied for radionuclide diagnosis and treatment of malignancies. The full-size antibodies used so far have non-optimal pharmacological properties, slow distribution in the body, poor penetration into the tissue and kidney excretion, and high immunogenicity, which significantly complicates their use in clinical practice. Over the past decade, a new class of targeted molecules, called “non-immunoglobulin scaffolds” have become popular; they have all the requirements for optimal delivery of a radionuclide to tumor cells. Scaffolds usually are smaller in size in comparison with antibodies, but they are larger than peptides, and are characterized by high affinity and optimal biochemical, biophysical, biological, and economic features. The advantages of such proteins are their stable structure, good penetration into tissues, the possibility of additional functionalization and expression in the bacterial system, which ensures low production costs.The results of preclinical and clinical studies for diagnosis of malignancies using such proteins as affibody, adnectin, DARPins, etc., have demonstrated their high specificity, affinity, good tolerance and low immunogenicity.
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Affiliation(s)
- O. D. Bragina
- Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Science
| | - V. I. Chernov
- Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Science;
National Research Tomsk Polytechnic University
| | - R. V. Zeltchan
- Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Science
| | - I. G. Sinilkin
- Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Science
| | - A. A. Medvedeva
- Cancer Research Institute, Tomsk National Research Medical Center (NRMC), Russian Academy of Science
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Vermeulen K, Vandamme M, Bormans G, Cleeren F. Design and Challenges of Radiopharmaceuticals. Semin Nucl Med 2019; 49:339-356. [PMID: 31470930 DOI: 10.1053/j.semnuclmed.2019.07.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review describes general concepts with regard to radiopharmaceuticals for diagnostic or therapeutic applications that help to understand the specific challenges encountered during the design, (radio)synthesis, in vitro and in vivo evaluation and clinical translation of novel radiopharmaceuticals. The design of a radiopharmaceutical requires upfront decisions with regard to combining a suitable vector molecule with an appropriate radionuclide, considering the type and location of the molecular target, the desired application, and the time constraints imposed by the relatively short half-life of radionuclides. Well-designed in vitro and in vivo experiments allow nonclinical validation of radiotracers. Ultimately, in combination with a limited toxicology package, the radiotracer becomes a radiopharmaceutical for clinical evaluation, produced in compliance with regulatory requirements for medicines for intravenous (IV) injection.
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Affiliation(s)
- Koen Vermeulen
- Laboratory for Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Mathilde Vandamme
- Laboratory for Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
| | - Guy Bormans
- Laboratory for Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium.
| | - Frederik Cleeren
- Laboratory for Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, Leuven, Belgium
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Vorobyeva A, Schulga A, Konovalova E, Güler R, Löfblom J, Sandström M, Garousi J, Chernov V, Bragina O, Orlova A, Tolmachev V, Deyev SM. Optimal composition and position of histidine-containing tags improves biodistribution of 99mTc-labeled DARPin G3. Sci Rep 2019; 9:9405. [PMID: 31253840 PMCID: PMC6599047 DOI: 10.1038/s41598-019-45795-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 06/07/2019] [Indexed: 12/16/2022] Open
Abstract
Radionuclide molecular imaging of HER2 expression in disseminated cancer enables stratification of patients for HER2-targeted therapies. DARPin G3, a small (14 kDa) engineered scaffold protein, is a promising probe for imaging of HER2. We hypothesized that position (C- or N-terminus) and composition (hexahistidine or (HE)3) of histidine-containing tags would influence the biodistribution of [99mTc]Tc(CO)3-labeled DARPin G3. To test the hypothesis, G3 variants containing tags at N-terminus (H6-G3 and (HE)3-G3) or at C-terminus (G3-H6 and G3-(HE)3) were labeled with [99mTc]Tc(CO)3. Labeling yield, label stability, specificity and affinity of the binding to HER2, biodistribution and tumor targeting properties of these variants were compared side-by-side. There was no substantial influence of position and composition of the tags on binding of [99mTc]Tc(CO)3-labeled variants to HER2. The specificity of HER2 targeting in vivo was confirmed. The tumor uptake in BALB/c nu/nu mice bearing SKOV3 xenografts was similar for all variants. On the opposite, there was a strong influence of the tags on uptake in normal tissues. The tumor-to-liver ratio for [99mTc]Tc(CO)3-(HE)3-G3 was three-fold higher compared to the hexahistidine-tag containing variants. Overall, [99mTc]Tc(CO)3-(HE)3-G3 variant provided the highest tumor-to-lung, tumor-to-liver, tumor-to-bone and tumor-to-muscle ratios, which should improve sensitivity of HER2 imaging in these common metastatic sites.
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Affiliation(s)
- Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Alexey Schulga
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Rezan Güler
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - John Löfblom
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Mattias Sandström
- Nuclear Medicine and PET, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Vladimir Chernov
- Nuclear Medicine Department, Cancer Research Institute, Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
| | - Olga Bragina
- Nuclear Medicine Department, Cancer Research Institute, Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden.,Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
| | - Sergey M Deyev
- Molecular Immunology Laboratory, Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.,National Research Tomsk Polytechnic University, Tomsk, Russia.,Bio-Nanophotonic Lab, Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University "MEPhI", Moscow, Russia
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Indirect Radioiodination of DARPin G3 Using N-succinimidyl- Para-Iodobenzoate Improves the Contrast of HER2 Molecular Imaging. Int J Mol Sci 2019; 20:ijms20123047. [PMID: 31234471 PMCID: PMC6627094 DOI: 10.3390/ijms20123047] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 02/08/2023] Open
Abstract
Radionuclide molecular imaging of human epidermal growth factor receptor 2 (HER2) in breast and gastroesophageal cancer might be used to stratify patients for HER2-targeted therapy as well as monitor treatment response and disease progression. Designed ankyrin repeat proteins (DARPins) are small engineered scaffold proteins with favorable properties for molecular imaging. Herein we compared two methods for labeling the anti-HER2 DARPin (HE)3-G3, direct and indirect radioiodination. We hypothesized that the use of N-succinimidyl-para-iodobenzoate (SPIB) for radioiodination would facilitate the clearance of radiometabolites and improve the contrast of imaging. Both radiolabeled (HE)3-G3 variants preserved their binding specificity and high affinity to HER2-expressing cells. The specificity of tumor targeting in vivo was also demonstrated. A biodistribution comparison of [125I]I-(HE)3-G3 and [125I]I-PIB-(HE)3-G3, in mice bearing HER2 expressing SKOV3 xenografts, showed rapid clearance of [125I]I-PIB-(HE)3-G3 from normal organs and tissues and low accumulation of activity in organs with NaI-symporter expression. Both radiolabeled (HE)3-G3 variants had equal tumor uptake. Consequently, the indirect label provided higher tumor-to-blood and tumor-to-organ ratios compared with the direct label. Comparative Single Photon Emission Computed Tomography (SPECT)/CT imaging of HER2 expression in SKOV3 xenografts, using both radiolabeled DARPins, demonstrated the superior imaging contrast of the indirect label. Indirect radioiodination of (HE)3-G3 using SPIB could be further applied for SPECT and PET imaging with iodine-123 and iodine-124.
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Ebrahimabadi S, Shahbazi M, Akbari M, Golalipour M, Farazmandfar T. Design and construction of a recombinant lentiviral vector with specific tropism to human epidermal growth factor-overexpressed cancer cells: Developing a new retargeting system for lentivirus vectors. J Gene Med 2019; 21:e3095. [PMID: 31050357 DOI: 10.1002/jgm.3095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Targeting of specific tissues and cells by viruses is one of the challenges faced by researchers. Lentiviral vectors (LVs) are one of the most promising gene delivery systems in cancer gene therapy. Therefore, we aimed to design a novel lentiviral delivery system that expresses anti- human epidermal growth factor 2 (HER2) designed anykrin repeat protein (DARPin) on the vector envelope to create a pseudotyped lentivirus for targeting HER2-positive cancer cells. METHODS A helper plasmid producing the viral vector envelope containing anti-HER2 DARPin-G3 was constructed. LV was produced by transfer vector containing green fluorescent protein (GFP) gene and helper plasmids in human embryonic kidney 293 cells. The human breast cancer cell lines SKBR3 (normal and with inhibited endocytosis) (HER2-positive) and MDA-MB-231 (HER2-negative) were transduced by the recombinant viral vector. The GFP-based transduction rate was determined by flow cytometry and fluorescence microscopy. RESULTS The anti-HER2 DARPin concentration in DARPin-LVs was significantly higher than the envelope G glycoprotein of the vesicular stomatitis virus-LVs (non-anti-HER2 control) (p < 0.0001). In flow cytometry assays, the percentage of transduction by recombinant LV was significantly higher in SKBR3 cells than in SKBR3 cells with inhibited endocytosis (p = 0.0074) and MDA-MB-231 cells (p = 0.0037). In fluorescence microscopy assays, the percentage of transduction by new LV was significantly higher in SKBR3 cells than in SKBR3 cells with inhibited endocytosis (p = 0.0026) and MDA-MB-231 cells (p = 0.0014). CONCLUSIONS We constructed a new recombinant LV with a defect in cell entry directly, containing an anti-HER2 DARPin on the vector envelope with specific tropism to HER2 receptor on HER2-positive cancer cells. We assumed that this viral vector transduces cells via an endocytosis-dependent process.
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Affiliation(s)
- Sima Ebrahimabadi
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Majid Shahbazi
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mona Akbari
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Masoud Golalipour
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Touraj Farazmandfar
- Medical Cellular and Molecular Research Center, Golestan University of Medical Sciences, Gorgan, Iran
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von Witting E, Garousi J, Lindbo S, Vorobyeva A, Altai M, Oroujeni M, Mitran B, Orlova A, Hober S, Tolmachev V. Selection of the optimal macrocyclic chelators for labeling with 111In and 68Ga improves contrast of HER2 imaging using engineered scaffold protein ADAPT6. Eur J Pharm Biopharm 2019; 140:109-120. [PMID: 31082509 DOI: 10.1016/j.ejpb.2019.05.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/07/2019] [Accepted: 05/09/2019] [Indexed: 12/16/2022]
Abstract
Radionuclide molecular imaging is a promising tool that becomes increasingly important as targeted cancer therapies are developed. To ensure an effective treatment, a molecular stratification of the cancer is a necessity. To accomplish this, visualization of cancer associated molecular abnormalities in vivo by molecular imaging is the method of choice. ADAPTs, a novel type of small protein scaffold, have been utilized to select and develop high affinity binders to different proteinaceous targets. One of these binders, ADAPT6 selectively interacts with human epidermal growth factor 2 (HER2) with low nanomolar affinity and can therefore be used for its in vivo visualization. Molecular design and optimization of labeled anti-HER2 ADAPT has been explored in several earlier studies, showing that small changes in the scaffold affect the biodistribution of the domain. In this study, we evaluate how the biodistribution properties of ADAPT6 is affected by the commonly used maleimido derivatives of the macrocyclic chelators NOTA, NODAGA, DOTA and DOTAGA with the aim to select the best variants for SPECT and PET imaging. The different conjugates were labeled with 111In for SPECT and 68Ga for PET. The acquired data show that the combination of a radionuclide and a chelator for its conjugation has a strong influence on the uptake of ADAPT6 in normal tissues and thereby gives a significant variation in tumor-to-organ ratios. Hence, it was concluded that the best variant for SPECT imaging is 111In-(HE)3DANS-ADAPT6-GSSC-DOTA while the best variant for PET imaging is 68Ga-(HE)3DANS-ADAPT6-GSSC-NODAGA.
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Affiliation(s)
- Emma von Witting
- Department of Protein Science, KTH - Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Sarah Lindbo
- Department of Protein Science, KTH - Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Mohamed Altai
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Maryam Oroujeni
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
| | - Bogdan Mitran
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Sophia Hober
- Department of Protein Science, KTH - Royal Institute of Technology, SE-10691 Stockholm, Sweden.
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, SE-75185 Uppsala, Sweden
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Kim SJ, Hatch ST, Dixon AS, Owen SC. Split‐enzyme fragment as a single affinity tag that enables protein expression, purification, and functional assays. Biotechnol Bioeng 2019; 116:1575-1583. [DOI: 10.1002/bit.26980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 03/06/2019] [Accepted: 03/28/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Sun Jin Kim
- Department of Pharmaceutics and Pharmaceutical ChemistryUniversity of UtahSalt Lake City Utah
| | - Samuel T. Hatch
- Department of Pharmaceutics and Pharmaceutical ChemistryUniversity of UtahSalt Lake City Utah
| | - Andrew S. Dixon
- Department of Pharmaceutics and Pharmaceutical ChemistryUniversity of UtahSalt Lake City Utah
| | - Shawn C. Owen
- Department of Pharmaceutics and Pharmaceutical ChemistryUniversity of UtahSalt Lake City Utah
- Department of Biomedical EngineeringUniversity of UtahSalt Lake City Utah
- Department of Medicinal ChemistryUniversity of UtahSalt Lake City Utah
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41
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Vorobyeva A, Sсhulga A, Konovalova E, Güler R, Mitran B, Garousi J, Rinne S, Löfblom J, Orlova A, Deyev S, Tolmachev V. Comparison of tumor‑targeting properties of directly and indirectly radioiodinated designed ankyrin repeat protein (DARPin) G3 variants for molecular imaging of HER2. Int J Oncol 2019; 54:1209-1220. [PMID: 30968147 PMCID: PMC6411343 DOI: 10.3892/ijo.2019.4712] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/25/2019] [Indexed: 12/12/2022] Open
Abstract
Evaluation of human epidermal growth factor receptor 2 (HER2) expression levels in breast and gastroesophageal cancer is used for the stratification of patients for HER2‑targeting therapies. The use of radionuclide molecular imaging may facilitate such evaluation in a non‑invasive way. Designed ankyrin repeat proteins (DARPins) are engineered scaffold proteins with high potential as probes for radionuclide molecular imaging. DARPin G3 binds with high affinity to HER2 and may be used to visualize this important therapeutic target. Studies on other engineered scaffold proteins have demonstrated that selection of the optimal labeling approach improves the sensitivity and specificity of radionuclide imaging. The present study compared two methods of labeling G3, direct and indirect radioiodination, to select an approach providing the best imaging contrast. G3‑H6 was labeled with iodine‑124, iodine‑125 and iodine‑131 using a direct method. A novel construct bearing a C‑terminal cysteine, G3‑GGGC, was site‑specifically labeled using [125I]I‑iodo‑[(4‑hydroxyphenyl)ethyl]maleimide (HPEM). The two radiolabeled G3 variants preserved binding specificity and high affinity to HER2‑expressing cells. The specificity of tumor targeting in vivo was demonstrated. Biodistribution comparison of [131I]I‑G3‑H6 and [125I]I‑HPEM‑G3‑GGGC in mice, bearing HER2‑expressing SKOV3 xenografts, demonstrated an appreciable contribution of hepatobiliary excretion to the clearance of [125I]I‑HPEM‑G3‑GGGC and a decreased tumor uptake compared to [131I]I‑G3‑H6. The direct label provided higher tumor‑to‑blood and tumor‑to‑organ ratios compared with the indirect label at 4 h post‑injection. The feasibility of high contrast PET/CT imaging of HER2 expression in SKOV3 xenografts in mice using [124I]I‑G3‑H6 was demonstrated. In conclusion, direct radioiodination is the preferable approach for labeling DARPin G3 with iodine‑123 and iodine‑124 for clinical single photon emission computed tomography and positron emission tomography imaging.
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Affiliation(s)
- Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology, Uppsala University, SE 75185 Uppsala, Sweden
| | - Alexey Sсhulga
- Molecular Immunology Laboratory, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Elena Konovalova
- Molecular Immunology Laboratory, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Rezan Güler
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE 10691 Stockholm, Sweden
| | - Bogdan Mitran
- Department of Medicinal Chemistry, Uppsala University, SE 75183 Uppsala, Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, SE 75185 Uppsala, Sweden
| | - Sara Rinne
- Department of Medicinal Chemistry, Uppsala University, SE 75183 Uppsala, Sweden
| | - John Löfblom
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE 10691 Stockholm, Sweden
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, SE 75183 Uppsala, Sweden
| | - Sergey Deyev
- Molecular Immunology Laboratory, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, SE 75185 Uppsala, Sweden
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Deyev S, Vorobyeva A, Schulga A, Proshkina G, Güler R, Löfblom J, Mitran B, Garousi J, Altai M, Buijs J, Chernov V, Orlova A, Tolmachev V. Comparative Evaluation of Two DARPin Variants: Effect of Affinity, Size, and Label on Tumor Targeting Properties. Mol Pharm 2019; 16:995-1008. [PMID: 30608701 DOI: 10.1021/acs.molpharmaceut.8b00922] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Designed ankyrin repeat proteins (DARPins) are small engineered scaffold proteins that can be selected for binding to desirable molecular targets. High affinity and small size of DARPins render them promising probes for radionuclide molecular imaging. However, detailed knowledge on many factors influencing their imaging properties is still lacking. We have evaluated two human epidermal growth factor 2 (HER2)-specific DARPins with different size and binding properties. DARPins 9_29-H6 and G3-H6 were radiolabeled with iodine-125 and tricarbonyl technetium-99m and evaluated in vitro. A side-by-side comparison of biodistribution and tumor targeting was performed. HER2-specific tumor accumulation of G3-H6 was demonstrated. A combination of smaller size and higher affinity resulted in a higher tumor uptake of G3-H6 in comparison to 9_29-H6. Technetium-99m labeled G3-H6 demonstrated a better biodistribution profile than 9_29-H6, with several-fold lower uptake in liver. Radioiodinated G3-H6 showed the best tumor-to-organ ratios. The combined effect of affinity, molecular weight, scaffold composition, and nonresidualizing properties of iodine label provided radioiodinated G3-H6 with high clinical potential for imaging of HER2.
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Affiliation(s)
- Sergey Deyev
- Molecular Immunology Laboratory , Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences , Moscow , Russia.,National Research Tomsk Polytechnic University, Tomsk , Russia.,Bio-Nanophotonic Lab., Institute of Engineering Physics for Biomedicine (PhysBio) , National Research Nuclear University "MEPhI" , Moscow , Russia
| | | | - Alexey Schulga
- Molecular Immunology Laboratory , Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences , Moscow , Russia
| | - Galina Proshkina
- Molecular Immunology Laboratory , Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences , Moscow , Russia
| | - Rezan Güler
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health , KTH Royal Institute of Technology , Stockholm , Sweden
| | - John Löfblom
- Department of Protein Science, School of Engineering Sciences in Chemistry, Biotechnology and Health , KTH Royal Institute of Technology , Stockholm , Sweden
| | | | | | | | | | - Vladimir Chernov
- Nuclear Medicine Department, Cancer Research Institute , Tomsk National Research Medical Center Russian Academy of Sciences , Tomsk , Russia
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Kutova OM, Guryev EL, Sokolova EA, Alzeibak R, Balalaeva IV. Targeted Delivery to Tumors: Multidirectional Strategies to Improve Treatment Efficiency. Cancers (Basel) 2019; 11:E68. [PMID: 30634580 PMCID: PMC6356537 DOI: 10.3390/cancers11010068] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/06/2019] [Accepted: 01/07/2019] [Indexed: 12/13/2022] Open
Abstract
Malignant tumors are characterized by structural and molecular peculiarities providing a possibility to directionally deliver antitumor drugs with minimal impact on healthy tissues and reduced side effects. Newly formed blood vessels in malignant lesions exhibit chaotic growth, disordered structure, irregular shape and diameter, protrusions, and blind ends, resulting in immature vasculature; the newly formed lymphatic vessels also have aberrant structure. Structural features of the tumor vasculature determine relatively easy penetration of large molecules as well as nanometer-sized particles through a blood⁻tissue barrier and their accumulation in a tumor tissue. Also, malignant cells have altered molecular profile due to significant changes in tumor cell metabolism at every level from the genome to metabolome. Recently, the tumor interaction with cells of immune system becomes the focus of particular attention, that among others findings resulted in extensive study of cells with preferential tropism to tumor. In this review we summarize the information on the diversity of currently existing approaches to targeted drug delivery to tumor, including (i) passive targeting based on the specific features of tumor vasculature, (ii) active targeting which implies a specific binding of the antitumor agent with its molecular target, and (iii) cell-mediated tumor targeting.
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Affiliation(s)
- Olga M Kutova
- The Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia.
| | - Evgenii L Guryev
- The Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia.
| | - Evgeniya A Sokolova
- The Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia.
| | - Razan Alzeibak
- The Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia.
| | - Irina V Balalaeva
- The Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia.
- The Institute of Molecular Medicine, I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya str., Moscow 119991, Russia.
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44
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Morais M, Ma MT. Site-specific chelator-antibody conjugation for PET and SPECT imaging with radiometals. DRUG DISCOVERY TODAY. TECHNOLOGIES 2018; 30:91-104. [PMID: 30553525 PMCID: PMC6291455 DOI: 10.1016/j.ddtec.2018.10.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 10/05/2018] [Accepted: 10/08/2018] [Indexed: 11/17/2022]
Abstract
Antibodies and their derivatives radiolabelled with positron- and gamma-emitting radiometals enable sensitive and quantitative molecular Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT) imaging of antibody distribution in vivo. Chelators that are covalently attached to antibodies allow radiolabelling with metallic PET and SPECT radioisotopes. Conventional strategies for chelator-protein conjugation generate heterogeneous mixtures of bioconjugates that can exhibit reduced affinity for their receptor targets, and undesirable biodistribution and pharmacokinetics. Recent advances in bioconjugation technology enable site-specific modification to generate well-defined constructs with superior properties. Herein we survey existing site-specific chelator-protein conjugation methods. These include chelator attachment to cysteines/disulfide bonds or the glycan region of the antibody, enzyme-mediated chelator conjugation, and incorporation of sequences of amino acids that chelate the radiometal. Such technology will allow better use of PET and SPECT imaging in the development of antibody-based therapies.
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Affiliation(s)
- Mauricio Morais
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, United Kingdom.
| | - Michelle T Ma
- School of Biomedical Engineering and Imaging Sciences, King's College London, St. Thomas' Hospital, London SE1 7EH, United Kingdom
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45
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Direct fluorine-18 labeling of heat-sensitive biomolecules for positron emission tomography imaging using the Al18F-RESCA method. Nat Protoc 2018; 13:2330-2347. [DOI: 10.1038/s41596-018-0040-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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46
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Preclinical Evaluation of [ 68Ga]Ga-DFO-ZEGFR:2377: A Promising Affibody-Based Probe for Noninvasive PET Imaging of EGFR Expression in Tumors. Cells 2018; 7:cells7090141. [PMID: 30231504 PMCID: PMC6162391 DOI: 10.3390/cells7090141] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/13/2018] [Accepted: 09/15/2018] [Indexed: 01/10/2023] Open
Abstract
Radionuclide imaging of epidermal growth factor receptor (EGFR) expression in tumors may stratify patients for EGFR-targeting therapies and predict response or resistance to certain treatments. Affibody molecules, which are nonimmunoglobulin scaffold proteins, have a high potential as probes for molecular imaging. In this study, maleimido derivative of desferrioxamine B (DFO) chelator was site-specifically coupled to the C-terminal cysteine of the anti-EGFR affibody molecule ZEGFR:2377, and the DFO-ZEGFR:2377 conjugate was labeled with the generator-produced positron-emitting radionuclide 68Ga. Stability, specificity of binding to EGFR-expressing cells, and processing of [68Ga]Ga-DFO-ZEGFR:2377 by cancer cells after binding were evaluated in vitro. In vivo studies were performed in nude mice bearing human EGFR-expressing A431 epidermoid cancer xenografts. The biodistribution of [68Ga]Ga-DFO-ZEGFR:2377 was directly compared with the biodistribution of [89Zr]Zr-DFO-ZEGFR:2377. DFO-ZEGFR:2377 was efficiently (isolated yield of 73 ± 3%) and stably labeled with 68Ga. Binding of [68Ga]Ga-DFO-ZEGFR:2377 to EGFR-expressing cells in vitro was receptor-specific and proportional to the EGFR expression level. In vivo saturation experiment demonstrated EGFR-specific accumulation of [68Ga]Ga-DFO-ZEGFR:2377 in A431 xenografts. Compared to [89Zr]Zr-DFO-ZEGFR:2377, [68Ga]Ga-DFO-ZEGFR:2377 demonstrated significantly (p < 0.05) higher uptake in tumors and lower uptake in spleen and bones. This resulted in significantly higher tumor-to-organ ratios for [68Ga]Ga-DFO-ZEGFR:2377. In conclusion, [68Ga]Ga-DFO-ZEGFR:2377 is a promising probe for imaging of EGFR expression.
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47
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Lindbo S, Garousi J, Mitran B, Vorobyeva A, Oroujeni M, Orlova A, Hober S, Tolmachev V. Optimized Molecular Design of ADAPT-Based HER2-Imaging Probes Labeled with 111In and 68Ga. Mol Pharm 2018; 15:2674-2683. [PMID: 29865791 DOI: 10.1021/acs.molpharmaceut.8b00204] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Radionuclide molecular imaging is a promising tool for visualization of cancer associated molecular abnormalities in vivo and stratification of patients for specific therapies. ADAPT is a new type of small engineered proteins based on the scaffold of an albumin binding domain of protein G. ADAPTs have been utilized to select and develop high affinity binders to different proteinaceous targets. ADAPT6 binds to human epidermal growth factor 2 (HER2) with low nanomolar affinity and can be used for its in vivo visualization. Molecular design of 111In-labeled anti-HER2 ADAPT has been optimized in several earlier studies. In this study, we made a direct comparison of two of the most promising variants, having either a DEAVDANS or a (HE)3DANS sequence at the N-terminus, conjugated with a maleimido derivative of DOTA to a GSSC amino acids sequence at the C-terminus. The variants (designated DOTA-C59-DEAVDANS-ADAPT6-GSSC and DOTA-C61-(HE)3DANS-ADAPT6-GSSC) were stably labeled with 111In for SPECT and 68Ga for PET. Biodistribution of labeled ADAPT variants was evaluated in nude mice bearing human tumor xenografts with different levels of HER2 expression. Both variants enabled clear discrimination between tumors with high and low levels of HER2 expression. 111In-labeled ADAPT6 derivatives provided higher tumor-to-organ ratios compared to 68Ga-labeled counterparts. The best performing variant was DOTA-C61-(HE)3DANS-ADAPT6-GSSC, which provided tumor-to-blood ratios of 208 ± 36 and 109 ± 17 at 3 h for 111In and 68Ga labels, respectively.
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Affiliation(s)
- Sarah Lindbo
- School of Engineering in Chemistry, Biotechnology and Health (CBH) , Division of Protein Science, KTH Royal Institute of Technology , SE-10691 Stockholm , Sweden
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology , Uppsala University , 751 85 Uppsala , Sweden
| | - Bogdan Mitran
- Department of Medicinal Chemistry , Uppsala University , 751 23 Uppsala , Sweden
| | - Anzhelika Vorobyeva
- Department of Immunology, Genetics and Pathology , Uppsala University , 751 85 Uppsala , Sweden
| | - Maryam Oroujeni
- Department of Immunology, Genetics and Pathology , Uppsala University , 751 85 Uppsala , Sweden
| | - Anna Orlova
- Department of Medicinal Chemistry , Uppsala University , 751 23 Uppsala , Sweden
| | - Sophia Hober
- School of Engineering in Chemistry, Biotechnology and Health (CBH) , Division of Protein Science, KTH Royal Institute of Technology , SE-10691 Stockholm , Sweden
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology , Uppsala University , 751 85 Uppsala , Sweden
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48
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Comparative Evaluation of Radioiodine and Technetium-Labeled DARPin 9_29 for Radionuclide Molecular Imaging of HER2 Expression in Malignant Tumors. CONTRAST MEDIA & MOLECULAR IMAGING 2018; 2018:6930425. [PMID: 29977173 PMCID: PMC6011117 DOI: 10.1155/2018/6930425] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/14/2018] [Accepted: 04/22/2018] [Indexed: 02/08/2023]
Abstract
High expression of human epidermal growth factor receptor 2 (HER2) in breast and gastroesophageal carcinomas is a predictive biomarker for treatment using HER2-targeted therapeutics (antibodies trastuzumab and pertuzumab, antibody-drug conjugate trastuzumab DM1, and tyrosine kinase inhibitor lapatinib). Radionuclide molecular imaging of HER2 expression might permit stratification of patients for HER2-targeting therapies. In this study, we evaluated a new HER2-imaging probe based on the designed ankyrin repeat protein (DARPin) 9_29. DARPin 9_29 was labeled with iodine-125 by direct radioiodination and with [99mTc]Tc(CO)3 using the C-terminal hexahistidine tag. DARPin 9_29 preserved high specificity and affinity of binding to HER2-expressing cells after labeling. Uptake of [125I]I-DARPin 9_29 and [99mTc]Tc(CO)3-DARPin 9_29 in HER2-positive SKOV-3 xenografts in mice at 6 h after injection was 3.4 ± 0.7 %ID/g and 2.9 ± 0.7 %ID/g, respectively. This was significantly (p < 0.00005) higher than the uptake of the same probes in HER2-negative Ramos lymphoma xenografts, 0.22 ± 0.09 %ID/g and 0.30 ± 0.05 %ID/g, respectively. Retention of [125I]I-DARPin 9_29 in the lung, liver, spleen, and kidneys was appreciably lower compared with [99mTc]Tc(CO)3-DARPin 9_29, which resulted in significantly (p < 0.05) higher tumor-to-organ ratios. The biodistribution data were confirmed by SPECT/CT imaging. In conclusion, radioiodine is a preferable label for DARPin 9_29.
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49
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Tolmachev V, Grönroos TJ, Yim CB, Garousi J, Yue Y, Grimm S, Rajander J, Perols A, Haaparanta-Solin M, Solin O, Ferdani R, Orlova A, Anderson CJ, Karlström AE. Molecular design of radiocopper-labelled Affibody molecules. Sci Rep 2018; 8:6542. [PMID: 29695813 PMCID: PMC5916907 DOI: 10.1038/s41598-018-24785-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 04/10/2018] [Indexed: 12/18/2022] Open
Abstract
The use of long-lived positron emitters 64Cu or 61Cu for labelling of Affibody molecules may improve breast cancer patients’ stratification for HER-targeted therapy. Previous animal studies have shown that the use of triaza chelators for 64Cu labelling of synthetic Affibody molecules is suboptimal. In this study, we tested a hypothesis that the use of cross-bridged chelator, CB-TE2A, in combination with Gly-Glu-Glu-Glu spacer for labelling of Affibody molecules with radiocopper would improve imaging contrast. CB-TE2A was coupled to the N-terminus of synthetic Affibody molecules extended either with a glycine (designation CB-TE2A-G-ZHER2:342) or Gly-Glu-Glu-Glu spacer (CB-TE2A-GEEE-ZHER2:342). Biodistribution and targeting properties of 64Cu-CB-TE2A-G-ZHER2:342 and 64Cu-CB-TE2A-GEEE-ZHER2:342 were compared in tumor-bearing mice with the properties of 64Cu-NODAGA-ZHER2:S1, which had the best targeting properties in the previous study. 64Cu-CB-TE2A-GEEE-ZHER2:342 provided appreciably lower uptake in normal tissues and higher tumor-to-organ ratios than 64Cu-CB-TE2A-G-ZHER2:342 and 64Cu-NODAGA-ZHER2:S1. The most pronounced was a several-fold difference in the hepatic uptake. At the optimal time point, 6 h after injection, the tumor uptake of 64Cu-CB-TE2A-GEEE-ZHER2:342 was 16 ± 6%ID/g and tumor-to-blood ratio was 181 ± 52. In conclusion, a combination of the cross-bridged CB-TE2A chelator and Gly-Glu-Glu-Glu spacer is preferable for radiocopper labelling of Affibody molecules and, possibly, other scaffold proteins having high renal re-absorption.
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Affiliation(s)
- Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden.
| | - Tove J Grönroos
- Turku PET Centre, University of Turku, Turku, Finland.,MediCity Research Laboratory, University of Turku, Turku, Finland.,Department of Oncology and Radiotherapy, Turku University Hospital, Turku, Finland
| | - Cheng-Bin Yim
- Turku PET Centre, University of Turku, Turku, Finland.,Turku PET Centre, Åbo Akademi University, Turku, Finland
| | - Javad Garousi
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Ying Yue
- Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Sebastian Grimm
- Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Johan Rajander
- Turku PET Centre, Åbo Akademi University, Turku, Finland
| | - Anna Perols
- Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Merja Haaparanta-Solin
- Turku PET Centre, University of Turku, Turku, Finland.,Department of Chemistry, University of Turku, Turku, Finland
| | - Olof Solin
- Turku PET Centre, University of Turku, Turku, Finland.,Turku PET Centre, Åbo Akademi University, Turku, Finland.,Department of Chemistry, University of Turku, Turku, Finland
| | | | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden
| | - Carolyn J Anderson
- Departments of Medicine, Radiology, Bioengineering and Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA, 15203, USA
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Krasniqi A, D'Huyvetter M, Devoogdt N, Frejd FY, Sörensen J, Orlova A, Keyaerts M, Tolmachev V. Same-Day Imaging Using Small Proteins: Clinical Experience and Translational Prospects in Oncology. J Nucl Med 2018; 59:885-891. [PMID: 29545374 DOI: 10.2967/jnumed.117.199901] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 03/06/2018] [Indexed: 12/12/2022] Open
Abstract
Imaging of expression of therapeutic targets may enable stratification of patients for targeted treatments. The use of small radiolabeled probes based on the heavy-chain variable region of heavy-chain-only immunoglobulins or nonimmunoglobulin scaffolds permits rapid localization of radiotracers in tumors and rapid clearance from normal tissues. This makes high-contrast imaging possible on the day of injection. This mini review focuses on small proteins for radionuclide-based imaging that would allow same-day imaging, with the emphasis on clinical applications and promising preclinical developments within the field of oncology.
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Affiliation(s)
- Ahmet Krasniqi
- In Vivo Cellular and Molecular Imaging Laboratory (ICMI), VUB, Brussels, Belgium
| | - Matthias D'Huyvetter
- In Vivo Cellular and Molecular Imaging Laboratory (ICMI), VUB, Brussels, Belgium
| | - Nick Devoogdt
- In Vivo Cellular and Molecular Imaging Laboratory (ICMI), VUB, Brussels, Belgium
| | - Fredrik Y Frejd
- Affibody AB, Solna, Sweden.,Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Jens Sörensen
- Nuclear Medicine and PET, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden.,Medical Imaging Centre, Uppsala University Hospital, Uppsala, Sweden
| | - Anna Orlova
- Department of Medicinal Chemistry, Uppsala University, Uppsala, Sweden; and
| | - Marleen Keyaerts
- In Vivo Cellular and Molecular Imaging Laboratory (ICMI), VUB, Brussels, Belgium .,Nuclear Medicine Department, UZ Brussel, Brussels, Belgium
| | - Vladimir Tolmachev
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
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