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Pozdniakova NV, Lipengolts AA, Skribitsky VA, Shpakova KE, Finogenova YA, Smirnova AV, Shevelev AB, Grigorieva EY. Transplanted Murine Tumours SPECT Imaging with 99mTc Delivered with an Artificial Recombinant Protein. Int J Mol Sci 2024; 25:10197. [PMID: 39337680 DOI: 10.3390/ijms251810197] [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: 08/08/2024] [Revised: 09/15/2024] [Accepted: 09/19/2024] [Indexed: 09/30/2024] Open
Abstract
99mTc is a well-known radionuclide that is widely used and readily available for SPECT/CT (Single-Photon Emission Computed Tomography) diagnosis. However, commercial isotope carriers are not specific enough to tumours, rapidly clear from the bloodstream, and are not safe. To overcome these limitations, we suggest immunologically compatible recombinant proteins containing a combination of metal binding sites as 99mTc chelators and several different tumour-specific ligands for early detection of tumours. E1b protein containing metal-binding centres and tumour-specific ligands targeting integrin αvβ3 and nucleolin, as well as a short Cys-rich sequence, was artificially constructed. It was produced in E. coli, purified by metal-chelate chromatography, and used to obtain a complex with 99mTc. This was administered intravenously to healthy Balb/C mice at an activity dose of about 80 MBq per mouse, and the biodistribution was studied by SPECT/CT for 24 h. Free sodium 99mTc-pertechnetate at the same dose was used as a reference. The selectivity of 99mTc-E1b and the kinetics of isotope retention in tumours were then investigated in experiments in C57Bl/6 and Balb/C mice with subcutaneously transplanted lung carcinoma (LLC) or mammary adenocarcinoma (Ca755, EMT6, or 4T1). The radionuclide distribution ratio in tumour and adjacent normal tissue (T/N) steadily increased over 24 h, reaching 15.7 ± 4.2 for EMT6, 16.5 ± 3.8 for Ca755, 6.7 ± 4.2 for LLC, and 7.5 ± 3.1 for 4T1.
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Affiliation(s)
- Natalia V Pozdniakova
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
- N.I. Vavilov Institute of General Genetics RAS, Gubkina Street, 3, GSP-1, 119991 Moscow, Russia
| | - Alexey A Lipengolts
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
- Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University MEPhI, Kashirskoe Shosse, 31, 115409 Moscow, Russia
| | - Vsevolod A Skribitsky
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
- Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University MEPhI, Kashirskoe Shosse, 31, 115409 Moscow, Russia
| | - Kristina E Shpakova
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
- Institute of Engineering Physics for Biomedicine (PhysBio), National Research Nuclear University MEPhI, Kashirskoe Shosse, 31, 115409 Moscow, Russia
| | - Yulia A Finogenova
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
| | - Anna V Smirnova
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
| | - Alexei B Shevelev
- N.I. Vavilov Institute of General Genetics RAS, Gubkina Street, 3, GSP-1, 119991 Moscow, Russia
| | - Elena Y Grigorieva
- N.N. Blokhin National Medical Research Center of Oncology of the Ministry of Public Health of the Russian Federation (N.N. Blokhin NMRCO), Kashirskoe Shosse, 23, 115478 Moscow, Russia
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Quintana JM, Jiang F, Kang M, Valladolid Onecha V, Könik A, Qin L, Rodriguez VE, Hu H, Borges N, Khurana I, Banla LI, Le Fur M, Caravan P, Schuemann J, Bertolet A, Weissleder R, Miller MA, Ng TSC. Localized in vivo prodrug activation using radionuclides. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.02.606075. [PMID: 39211146 PMCID: PMC11361159 DOI: 10.1101/2024.08.02.606075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Radionuclides used for imaging and therapy can show high molecular specificity in the body with appropriate targeting ligands. We hypothesized that local energy delivered by molecularly targeted radionuclides could chemically activate prodrugs at disease sites while avoiding activation in off-target sites of toxicity. As proof-of-principle, we tested whether this strategy of " RA dionuclide i nduced D rug E ngagement for R elease" ( RAiDER ) could locally deliver combined radiation and chemotherapy to maximize tumor cytotoxicity while minimizing exposure to activated chemotherapy in off-target sites. Methods We screened the ability of radionuclides to chemically activate a model radiation-activated prodrug consisting of the microtubule destabilizing monomethyl auristatin E caged by a radiation-responsive phenyl azide ("caged-MMAE") and interpreted experimental results using the radiobiology computational simulation suite TOPAS-nBio. RAiDER was evaluated in syngeneic mouse models of cancer using fibroblast activation protein inhibitor (FAPI) agents 99m Tc-FAPI-34 and 177 Lu-FAPI-04, the prostate-specific membrane antigen (PSMA) agent 177 Lu-PSMA-617, combined with caged-MMAE or caged-exatecan. Biodistribution in mice, combined with clinical dosimetry, estimated the relationship between radiopharmaceutical uptake in patients and anticipated concentrations of activated prodrug using RAiDER. Results RAiDER efficiency varied by 250-fold across radionuclides ( 99m Tc> 177 Lu> 64 Cu> 68 Ga> 223 Ra> 18 F), yielding up to 1.22µM prodrug activation per Gy of exposure from 99m Tc. Computational simulations implicated low-energy electron-mediated free radical formation as driving prodrug activation. Clinically relevant radionuclide concentrations chemically activated caged-MMAE restored its ability to destabilize microtubules and increased its cytotoxicity by up to 600-fold compared to non-irradiated prodrug. Mice treated with 99m Tc-FAPI-34 and caged-MMAE accumulated up to 3000× greater concentrations of activated MMAE in tumors compared to other tissues. RAiDER with 99m Tc-FAPI-34 or 177 Lu-FAPI-04 delayed tumor growth, while monotherapies did not ( P <0.03). Clinically-guided dosimetry suggests sufficient radiation doses can be delivered to activate therapeutically meaningful levels of prodrug. Conclusion This proof-of-concept study shows that RAiDER is compatible with multiple radionuclides commonly used in nuclear medicine and has the potential to improve the efficacy of radiopharmaceutical therapies to treat cancer safely. RAiDER thus shows promise as an effective strategy to treat disseminated malignancies and broadens the capability of radiopharmaceuticals to trigger diverse biological and therapeutic responses. Abstract Figure
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Bozorgchami N, Ahmadzadeh M, Hatamabadi D, Yazdani A, Shahhosseini S, Mohit E. Preparation, Characterization, and Radiolabeling of Anti-HER2 scFv With Technetium Tricarbonyl and Stability Studies. J Labelled Comp Radiopharm 2024; 67:168-179. [PMID: 38485465 DOI: 10.1002/jlcr.4090] [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: 12/23/2023] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 05/14/2024]
Abstract
Breast cancer is the most common diagnosed cancer, and the second cause of cancer death among women, worldwide. HER2 overexpression occurred in approximately 15% to 20% of breast cancers. Invasive biopsy method has been used for detection of HER2 overexpression. HER2-targeted imaging via an appropriate radionuclide is a promising method for sensitive and accurate identification of HER2+ primary and metastatic lesions. 99mTc-anti-HER2 scFv can specifically target malignancies and be used for diagnosis of the cancer type and metastasis as well as treatment of breast cancer. We radiolabeled anti-HER2 scFv that was expressed in Escherichia coli and purified through Ni-NTA resin under native condition with 99mTc-tricarbonyl formed from boranocarbonate. HER2-based ELISA, BCA, TLC, and HPLC were used in this study. In the current study, anti-HER2 scFv was lyophilized before radiolabeling. It was found that freeze-drying did not change the binding activity of anti-HER2 scFv to HER2. Results demonstrated direct anti-HER2 scFv radiolabeling by 99mTc-tricarbonyl to hexahistidine sequence (His-tag) without any changes in biological activity and radiochemical purity of around 98%. Stability analysis revealed that 99mTc-anti-HER2 scFv is stable for at least 24 h in PBS buffer, normal saline, human plasma proteins, and histidine solution.
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Affiliation(s)
- Negar Bozorgchami
- Department of Pharmaceutical Chemistry and Radiopharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Ahmadzadeh
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Food and Drug Laboratory Research Center, Food and Drug Administration, The Ministry of Health and Medical Education, Tehran, Iran
| | - Dara Hatamabadi
- Department of Pharmaceutical Chemistry and Radiopharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abdolreza Yazdani
- Department of Pharmaceutical Chemistry and Radiopharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soraya Shahhosseini
- Department of Pharmaceutical Chemistry and Radiopharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Protein Technology Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Mohit
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Sidorenko GV, Miroslavov AE, Tyupina MY. Technetium(I) carbonyl complexes for nuclear medicine: Coordination-chemical aspect. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yang E, Liu Q, Huang G, Liu J, Wei W. Engineering nanobodies for next-generation molecular imaging. Drug Discov Today 2022; 27:1622-1638. [PMID: 35331925 DOI: 10.1016/j.drudis.2022.03.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 02/04/2022] [Accepted: 03/17/2022] [Indexed: 12/12/2022]
Abstract
In recent years, nanobodies have emerged as ideal imaging agents for molecular imaging. Molecular nanobody imaging combines the specificity of nanobodies with the sensitivity of state-of-the-art molecular imaging modalities, such as positron emission tomography (PET). Given that modifications of nanobodies alter their pharmacokinetics (PK), the engineering strategies that combine nanobodies with radionuclides determine the effectiveness, reliability, and safety of the molecular imaging probes. In this review, we introduce conjugation strategies that have been applied to nanobodies, including random conjugation, 99mTc tricarbonyl chemistry, sortase A-mediated site-specific conjugation, maleimide-cysteine chemistry, and click chemistries. We also summarize the latest advances in nanobody tracers, emphasizing their preclinical and clinical use. In addition, we elaborate on nanobody-based near-infrared fluorescence (NIRF) imaging and image-guided surgery.
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Affiliation(s)
- Erpeng Yang
- Department of Nuclear Medicine, Institute of Clinical Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200217, China
| | - Qiufang Liu
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Center, Fudan University, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Gang Huang
- Department of Nuclear Medicine, Institute of Clinical Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200217, China
| | - Jianjun Liu
- Department of Nuclear Medicine, Institute of Clinical Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200217, China.
| | - Weijun Wei
- Department of Nuclear Medicine, Institute of Clinical Nuclear Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200217, China.
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Suffian IFBM, Al-Jamal KT. Bioengineering of virus-like particles as dynamic nanocarriers for in vivo delivery and targeting to solid tumours. Adv Drug Deliv Rev 2022; 180:114030. [PMID: 34736988 DOI: 10.1016/j.addr.2021.114030] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 09/16/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022]
Abstract
Virus-like particles (VLPs) are known as self-assembled, non-replicative and non-infectious protein particles, which imitate the formation and structure of original wild type viruses, however, lack the viral genome and/or their fragments. The capacity of VLPs to encompass small molecules like nucleic acids and others has made them as novel vessels of nanocarriers for drug delivery applications. In addition, VLPs surface have the capacity to achieve variation of the surface display via several modification strategies including genetic modification, chemical modification, and non-covalent modification. Among the VLPs nanocarriers, Hepatitis B virus core (HBc) particles have been the most encouraging candidate. HBc particles are hollow nanoparticles in the range of 30-34 nm in diameter and 7 nm thick envelopes, consisting of 180 or 240 copies of identical polypeptide monomer. They also employ a distinctive position among the VLPs carriers due to the high-level synthesis, which serves as a strong protective capsid shell and efficient self-assembly properties. This review highlights on the bioengineering of HBc particles as dynamic nanocarriers for in vivo delivery and specific targeting to solid tumours.
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Affiliation(s)
- Izzat F B M Suffian
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia (Kuantan Campus), Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia.
| | - Khuloud T Al-Jamal
- Institute of Pharmaceutical Science, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK.
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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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8
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Wong NCL, Cai Y, Meszaros LK, Biersack HJ, Cook GJR, Ting HH, Mottaghy FM. Preclinical development and characterisation of 99mTc-NM-01 for SPECT/CT imaging of human PD-L1. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2021; 11:154-166. [PMID: 34234994 PMCID: PMC8255215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/22/2021] [Indexed: 06/13/2023]
Abstract
The level of expression of programmed cell death-1 (PD-1)/programmed death ligand-1 (PD-L1) is a predictive biomarker for cancer immunotherapy, however, its detection remains challenging due to tumour heterogeneity and the influence from the binding of therapeutic agents. We recently developed [99mTc]-NM-01 as a companion diagnostic imaging agent for non-invasive molecular imaging of PD-L1 by single-photon emission computed tomography (SPECT). The aim of the study was to evaluate the [99mTc] radiolabelling of GMP graded NM-01 and its pharmacology, pharmacokinetics and toxicology. NM-01 bound specifically to human PD-L1 (Kd=0.8 nM) and did not interfere with the binding of the anti-PD-L1 antibody atezolizumab. NM-01 can bind various PD-L1-positive cancer cell lines and only interact with PD-L1 expressed on the cell surface. In SPECT/CT imaging, high [99mTc]-NM-01 accumulation was observed in the HCC827 mouse xenografted tumour model (30-min: 1.50 ± 0.27 %ID/g; 90-min: 1.23 ± 0.18 %ID/g), demonstrated a predominantly renal elimination (high uptake in bladder and kidney), while activity in the blood pool and other major organs remained low. The tumour-to-muscle and tumour-to-blood ratios were comparable with/without atezolizumab (P<0.04) but were significantly lowered when co-injected with excess NM-01 (P=0.04 and P=0.01, respectively.) The blood clearance of [99mTc]-NM-01 is bi-phasic; consisting of an initial fast washout phase with half-life of 2.1 min and a slower clearance phase with half-life of 25.4 min. In an intravenous extended single-dose toxicity study, no treatment-related changes were observed and the maximum tolerated dose of [99mTc]-NM-01 was 2.58 mg/kg. [99mTc]-NM-01 has suitable properties as a potential candidate for SPECT/CT imaging of PD-L1 assessment in cancer patients.
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Affiliation(s)
| | - Yina Cai
- NanoMab Technology LimitedShanghai, People’s Republic of China
| | | | | | - Gary JR Cook
- King’s College London and Guy’s and St Thomas’ PET Centre, St Thomas’ HospitalLondon, SE1 7EH, UK
- Cancer Imaging, School of Biomedical Engineering and Imaging Sciences, Kings College LondonLondon SE1 7EH, UK
| | - Hong Hoi Ting
- NanoMab Technology LimitedShanghai, People’s Republic of China
| | - Felix M Mottaghy
- Department of Nuclear Medicine, University Hospital RWTH AachenGermany
- Department of Radiology and Nuclear Medicine, Maastricht University Medical CentreMaastricht, The Netherlands
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Harmand TJ, Islam A, Pishesha N, Ploegh HL. Nanobodies as in vivo, non-invasive, imaging agents. RSC Chem Biol 2021; 2:685-701. [PMID: 34212147 PMCID: PMC8190910 DOI: 10.1039/d1cb00023c] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/02/2021] [Indexed: 12/12/2022] Open
Abstract
In vivo imaging has become in recent years an incredible tool to study biological events and has found critical applications in diagnostic medicine. Although a lot of efforts and applications have been achieved using monoclonal antibodies, other types of delivery agents are being developed. Among them, VHHs, antigen binding fragments derived from camelid heavy chain-only antibodies, also known as nanobodies, have particularly attracted attention. Indeed, their stability, fast clearance, good tissue penetration, high solubility, simple cloning and recombinant production make them attractive targeting agents for imaging modalities such as PET, SPECT or Infra-Red. In this review, we discuss the pioneering work that has been carried out using VHHs and summarize the recent developments that have been made using nanobodies for in vivo, non-invasive, imaging.
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Affiliation(s)
- Thibault J Harmand
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School Boston MA USA
| | - Ashraful Islam
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School Boston MA USA
- Department of Clinical Medicine, UiT The Arctic University of Norway Tromso Norway
| | - Novalia Pishesha
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School Boston MA USA
- Society of Fellows, Harvard University Cambridge MA USA
- Klarman Cell Observatory, Broad Institute of MIT and Harvard Cambridge MA USA
| | - Hidde L Ploegh
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Harvard Medical School Boston MA USA
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Calderon LE, Black CA, Rollins JD, Overbay B, Shiferawe S, Elliott A, Reitz S, Liu S, Li J, Ng CK, Ndinguri MW. Synthesis of Radiolabeled Technetium- and Rhenium-Luteinizing Hormone-Releasing Hormone ( 99mTc/Re-Acdien-LHRH) Conjugates for Targeted Detection of Breast Cancer Cells Overexpressing the LHRH Receptor. ACS OMEGA 2021; 6:1846-1856. [PMID: 33521425 PMCID: PMC7841779 DOI: 10.1021/acsomega.0c03991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/25/2020] [Indexed: 06/12/2023]
Abstract
Currently, 186/188Re and 99mTc are widely used radionuclides for cancer detection and diagnosis. New advancements in modalities and targeting strategies of radiopharmaceuticals will provide an opportunity to enhance imagery and detection of smaller colonies of cancer cells while lowering false-positive diagnoses. To understand the chemistry of agents derived from fac-[99mTc(CO)3(H2O)3]+ species, the nonradioactive [Re(CO)3(H2O)3]+ analogue was used. We have designed and synthesized Re-Acdien-LHRH, Re-Acdien-peg-LHRH, and a radiolabeled 99mTc-Acdien-LHRH (rhenium- and technetium-luteinizing hormone-releasing hormone) conjugates using a tridentate linker to detect cancers overexpressing the LHRH receptor. Re-Acdien-LHRH and Re-Acdien-peg-LHRH were synthesized from non-PEGylated and PEGylated LHRH-Acdien, respectively. Cellular uptake of the compounds 99mTc-Acdien-LHRH, Re-Acdien-LHRH, and Re-Acdien-peg-LHRH was found to be significantly enhanced compared to that of untargeted 99mTc alone and unlabeled [Re(CO)3(H2O)3]+. In addition, the conjugate compounds showed no difference in cellular toxicity compared to untargeted 99mTc alone or unlabeled [Re(CO)3(H2O)3]+. Further, a competition assay using LHRH indicated selective targeting of Re-Acdien-peg-LHRH toward the LHRH receptor (p < 0.05) compared to that of [Re(CO)3(H2O)3]+ alone. Together, our data show the design paradigm and synthesis of targeting radionuclides using the LHRH peptide. Our data suggests that utilizing the LHRH peptide can lead to selective targeting and diagnosis of breast cancers expressing the LHRH receptor.
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Affiliation(s)
- Lindsay E. Calderon
- Department
of Biology, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Carrie A. Black
- Department
of Chemistry, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Joseph D. Rollins
- Department
of Biology, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Brittany Overbay
- Department
of Chemistry, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Semekidus Shiferawe
- Department
of Biology, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Andrew Elliott
- Department
of Chemistry, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Sara Reitz
- Department
of Chemistry, Eastern Kentucky University, Richmond, Kentucky 40475, United States
| | - Shu Liu
- Department
of Physiology, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Junling Li
- Department
of Radiology, University of Louisville, Louisville, Kentucky 40202, United States
| | - Chin K. Ng
- Department
of Radiology, University of Louisville, Louisville, Kentucky 40202, United States
| | - Margaret W. Ndinguri
- Department
of Chemistry, Eastern Kentucky University, Richmond, Kentucky 40475, United States
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12
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Williams JD, Kampmeier F, Badar A, Howland K, Cooper MS, Mullen GED, Blower PJ. Optimal His-Tag Design for Efficient [ 99mTc(CO) 3] + and [ 188Re(CO) 3] + Labeling of Proteins for Molecular Imaging and Radionuclide Therapy by Analysis of Peptide Arrays. Bioconjug Chem 2020; 32:1242-1254. [PMID: 33241692 DOI: 10.1021/acs.bioconjchem.0c00561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Hexahistidine tags (His-tags), incorporated into recombinant proteins to facilitate purification using metal-affinity chromatography, are useful binding sites for radiolabeling with [99mTc(CO)3]+ and [188Re(CO)3]+ for molecular imaging and radionuclide therapy. Labeling efficiencies vary unpredictably, and the method is therefore not universally useful. To overcome this, we have made quantitative comparisons of radiolabeling of a bespoke Celluspots array library of 382 His-tag-containing peptide sequences with [99mTc(CO)3]+ and [188Re(CO)3]+ to identify key features that enhance labeling. A selected sequence with 10-fold enhanced labeling efficiency compared to the most effective literature-reported sequences was incorporated into an exemplar protein and compared biologically with non-optimized analogues, in vitro and in vivo. Optimal labeling with either [99mTc(CO)3]+ or [188Re(CO)3]+ required six consecutive His residues in the protein sequence, surrounded by several positively charged residues (Arg or Lys), and the presence of phosphate in the buffer. Cys or Met residues in the sequence were beneficial, to a lesser extent. Negatively charged residues were deleterious to labeling. His-tags with adjacent positively charged residues could be labeled as much as 40 times more efficiently than those with adjacent negatively charged residues. 31P NMR of [Re(CO)3(H2O)3]+ and electrophoresis of solutions of [99mTc(CO)3(H2O)3]+ suggest that phosphate bridges form between cationic residues and the cationic metal synthon during labeling. The trial optimized protein, a scFv targeted to the PSMA antigen expressed in prostate cancer, was readily labeled in >95% radiochemical yield, without the need for subsequent purification. Labeling occurred more quickly and to higher specific activity than comparable non-optimized proteins, while retaining specific binding to PSMA and prostate cancer in vivo. Thus, optimized His-tags greatly simplify radiolabeling of recombinant proteins making them potentially more widely and economically available for imaging and treating patients.
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Affiliation(s)
- Jennifer D Williams
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Florian Kampmeier
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Adam Badar
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Kevin Howland
- Biomolecular Science Facility, University of Kent, Canterbury, CT2 7NJ, United Kingdom
| | - Margaret S Cooper
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Gregory E D Mullen
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
| | - Philip J Blower
- King's College London, School of Biomedical Engineering and Imaging Sciences, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, United Kingdom
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Toczek J, Bordenave T, Gona K, Kim HY, Beau F, Georgiadis D, Correia I, Ye Y, Razavian M, Jung JJ, Lequin O, Dive V, Sadeghi MM, Devel L. Novel Matrix Metalloproteinase 12 Selective Radiotracers for Vascular Molecular Imaging. J Med Chem 2019; 62:9743-9752. [PMID: 31603669 DOI: 10.1021/acs.jmedchem.9b01186] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Matrix metalloproteinase-12 (MMP-12) is highly upregulated in several inflammatory diseases, including abdominal aortic aneurysm (AAA). Here we report four novel 99mTc-labeled radiotracers derived from a highly selective competitive MMP-12 inhibitor. These tracers in their 99gTc version were assessed in vitro on a set of human metalloproteases and displayed high affinity and selectivity toward MMP-12. Their radiolabeling with 99mTc was shown to be efficient and stable in both buffer and mouse blood. The tracers showed major differences in their biodistribution and blood clearance. On the basis of its in vivo performance, [99mTc]-1 was selected for evaluation in murine AAA, where MMP-12 gene expression is upregulated. Autoradiography of aortae at 2 h postinjection revealed high uptake of [99mTc]-1 in AAA relative to adjacent aorta. Tracer uptake specificity was demonstrated through in vivo competition. This study paves the way for further evaluation of [99mTc]-1 for imaging AAA and other MMP-12-associated diseases.
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Affiliation(s)
- Jakub Toczek
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Thomas Bordenave
- CEA, Institut des Sciences du Vivant Frédéric Joliot, Service d'Ingénierie Moléculaire des Protéines (SIMOPRO), Université Paris-Saclay , Gif-sur-Yvette 91190 , France
| | - Kiran Gona
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Hye-Yeong Kim
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Fabrice Beau
- CEA, Institut des Sciences du Vivant Frédéric Joliot, Service d'Ingénierie Moléculaire des Protéines (SIMOPRO), Université Paris-Saclay , Gif-sur-Yvette 91190 , France
| | - Dimitris Georgiadis
- Laboratory of Organic Chemistry, Department of Chemistry , University of Athens , Panepistimiopolis Zografou, 15771 Athens , Greece
| | - Isabelle Correia
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM , 75005 Paris , France
| | - Yunpeng Ye
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Mahmoud Razavian
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Jae-Joon Jung
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Olivier Lequin
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM , 75005 Paris , France
| | - Vincent Dive
- CEA, Institut des Sciences du Vivant Frédéric Joliot, Service d'Ingénierie Moléculaire des Protéines (SIMOPRO), Université Paris-Saclay , Gif-sur-Yvette 91190 , France
| | - Mehran M Sadeghi
- Cardiovascular Molecular Imaging Laboratory, Section of Cardiovascular Medicine and Yale Cardiovascular Research Center , Yale University School of Medicine , New Haven , Connecticut 06511 , United States.,Veterans Affairs Connecticut Healthcare System , West Haven , Connecticut 06516 , United States
| | - Laurent Devel
- CEA, Institut des Sciences du Vivant Frédéric Joliot, Service d'Ingénierie Moléculaire des Protéines (SIMOPRO), Université Paris-Saclay , Gif-sur-Yvette 91190 , France
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14
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Xing Y, Chand G, Liu C, Cook GJR, O'Doherty J, Zhao L, Wong NCL, Meszaros LK, Ting HH, Zhao J. Early Phase I Study of a 99mTc-Labeled Anti-Programmed Death Ligand-1 (PD-L1) Single-Domain Antibody in SPECT/CT Assessment of PD-L1 Expression in Non-Small Cell Lung Cancer. J Nucl Med 2019; 60:1213-1220. [PMID: 30796165 PMCID: PMC6735283 DOI: 10.2967/jnumed.118.224170] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/29/2019] [Indexed: 12/20/2022] Open
Abstract
Immunotherapy with checkpoint inhibitor programmed cell death 1 (PD-1)/programmed death ligand-1 (PD-L1) antibodies demonstrates improvements in treatment of advanced non-small cell lung cancer. Treatment stratification depends on immunohistochemical PD-L1 measurement of biopsy material, an invasive method that does not account for spatiotemporal heterogeneity. Using a single-domain antibody, NM-01, against PD-L1, radiolabeled site-specifically with 99mTc for SPECT imaging, we aimed to assess the safety, radiation dosimetry, and imaging characteristics of this radiopharmaceutical and correlate tumor uptake with PD-L1 immunohistochemistry results. Methods: Sixteen patients (mean age, 61.7 y; 11 men) with non-small cell lung cancer were recruited. Primary tumor PD-L1 expression was measured by immunohistochemistry. NM-01 was radiolabeled with [99mTc(OH2)3(CO)3]+ complex binding to its C-terminal hexahistidine tag. Administered activity was 3.8-10.4 MBq/kg, corresponding to 100 μg or 400 μg of NM-01. Whole-body planar and thoracic SPECT/CT scans were obtained at 1 and 2 h after injection in all patients, and 5 patients underwent additional imaging at 10 min, 3 h, and 24 h for radiation dosimetry calculations. All patients were monitored for adverse events. Results: No drug-related adverse events occurred in this study. The mean effective dose was 8.84 × 10-3 ± 9.33 × 10-4 mSv/MBq (3.59 ± 0.74 mSv per patient). Tracer uptake was observed in the kidneys, spleen, liver, and bone marrow. SPECT primary tumor-to-blood-pool ratios (T:BP) varied from 1.24 to 2.3 (mean, 1.79) at 1 h and 1.24 to 3.53 (mean, 2.22) at 2 h (P = 0.005). Two-hour primary T:BP ratios correlated with PD-L1 immunohistochemistry results (r = 0.68, P = 0.014). Two-hour T:BP was lower in tumors with ≤1% PD-L1 expression (1.89 vs. 2.49, P = 0.048). Nodal and bone metastases showed tracer uptake. Heterogeneity (>20%) between primary tumor and nodal T:BP was present in 4 of 13 patients. Conclusion: This first-in-human study demonstrates that 99mTc-labeled anti-PD-L1-single-domain antibody SPECT/CT imaging is safe and associated with acceptable dosimetry. Tumor uptake is readily visible against background tissues, particularly at 2 h when the T:BP ratio correlates with PD-L1 immunohistochemistry results.
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Affiliation(s)
- Yan Xing
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Gitasha Chand
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
- Nanomab Technology Limited, Shanghai, People's Republic of China
| | - Changchun Liu
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Gary J R Cook
- Department of Cancer Imaging, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Jim O'Doherty
- Department of Molecular Imaging, Sidra Medicine, Doha, Qatar; and
- Weill Cornell Medical College, Education City, Doha, Qatar
| | - Lingzhou Zhao
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | | | | | - Hong Hoi Ting
- Nanomab Technology Limited, Shanghai, People's Republic of China
| | - Jinhua Zhao
- Department of Nuclear Medicine, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
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15
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Iacovacci V, Blanc A, Huang H, Ricotti L, Schibli R, Menciassi A, Behe M, Pané S, Nelson BJ. High-Resolution SPECT Imaging of Stimuli-Responsive Soft Microrobots. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900709. [PMID: 31304653 DOI: 10.1002/smll.201900709] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/07/2019] [Indexed: 06/10/2023]
Abstract
Untethered small-scale robots have great potential for biomedical applications. However, critical barriers to effective translation of these miniaturized machines into clinical practice exist. High resolution tracking and imaging in vivo is one of the barriers that limit the use of micro- and nanorobots in clinical applications. Here, the inclusion of radioactive compounds in soft thermoresponsive magnetic microrobots is investigated to enable their single-photon emission computed tomography imaging. Four microrobotic platforms differing in hydrogel structure and four 99m Tc[Tc]-based radioactive compounds are investigated in order to achieve optimal contrast agent retention and optimal imaging. Single microrobot imaging of structures as low as 100 µm in diameter, as well as tracking of shape switching from tubular to planar configurations by inclusion of 99m Tc[Tc] colloid in the hydrogel structure, is reported.
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Affiliation(s)
- Veronica Iacovacci
- Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, 50126, Italy
| | - Alain Blanc
- Center for Radiopharmaceutical Sciences, Paul Scherrer Institut, Villigen, CH-5232, Switzerland
| | - Henwei Huang
- Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, 50126, Italy
| | - Roger Schibli
- Center for Radiopharmaceutical Sciences, Paul Scherrer Institut, Villigen, CH-5232, Switzerland
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zurich, Switzerland
| | - Arianna Menciassi
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Pisa, 50126, Italy
| | - Martin Behe
- Center for Radiopharmaceutical Sciences, Paul Scherrer Institut, Villigen, CH-5232, Switzerland
| | - Salvador Pané
- Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland
| | - Bradley J Nelson
- Institute of Robotics and Intelligent Systems, ETH Zurich, Zurich, CH-8092, Switzerland
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16
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Ku A, Chan C, Aghevlian S, Cai Z, Cescon D, Bratman SV, Ailles L, Hedley DW, Reilly RM. MicroSPECT/CT Imaging of Cell-Line and Patient-Derived EGFR-Positive Tumor Xenografts in Mice with Panitumumab Fab Modified with Hexahistidine Peptides To Enable Labeling with 99mTc(I) Tricarbonyl Complex. Mol Pharm 2019; 16:3559-3568. [PMID: 31242384 DOI: 10.1021/acs.molpharmaceut.9b00422] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We aimed to investigate the feasibility of conjugating synthetic hexahistidine peptides (His6) peptides to panitumumab Fab (PmFab) to enable labeling with [99mTc(H2O)3(CO)3]+ complex and study these radioimmunoconjugates for imaging EGFR-overexpressing tumor xenografts in mice by microSPECT/CT. Fab were reacted with a 10-fold excess of sulfo-SMCC to introduce maleimide functional groups for reaction with the terminal thiol on peptides [CGYGGHHHHHH] that harbored the His6 motif. Modification of Fab with His6 peptides was assessed by SDS-PAGE/Western blot, and the number of His6 peptides introduced was quantified by a radiometric assay incorporating 123I-labeled peptides into the conjugation reaction. Radiolabeling was achieved by incubation of PmFab-His6 in PBS, pH 7.0, with [99mTc(H2O)3(CO)3]+ in a 1.4 MBq/μg ratio. The complex was prepared by adding [99mTcO4]- to an Isolink kit (Paul Scherrer Institute). Immunoreactivity was assessed in a direct (saturation) binding assay using MDA-MB-468 human triple-negative breast cancer (TNBC) cells. Tumor and normal tissue uptake and imaging properties of 99mTc-PmFab-His6 (70 μg; 35-40 MBq) injected i.v. (tail vein) were compared to irrelevant 99mTc-Fab 3913 in NOD/SCID mice engrafted subcutaneously (s.c.) with EGFR-overexpressing MDA-MB-468 or PANC-1 human pancreatic ductal carcinoma (PDCa) cell-line derived xenografts (CLX) at 4 and 24 h post injection (p.i.). In addition, tumor imaging studies were performed with 99mTc-PmFab-His6 in mice with patient-derived tumor xenografts (PDX) of TNBC, PDCa, and head and neck squamous cell carcinoma (HNSCC). Biodistribution studies in nontumor bearing Balb/c mice were performed to project the radiation absorbed doses for imaging studies in humans with 99mTc-PmFab-His6. PmFab was derivatized with 0.80 ± 0.03 His6 peptides. Western blot and SDS-PAGE confirmed the presence of His6 peptides. 99mTc-PmFab-His6 was labeled to high radiochemical purity (≥95%), and the Kd for binding to EGFR on MDA-MB-468 cells was 5.5 ± 0.4 × 10-8 mol/L. Tumor uptake of 99mTc-PmFab-His6 at 24 h p.i. was significantly (P < 0.05) higher than irrelevant 99mTc-Fab 3913 in mice with MDA-MB-468 tumors (14.9 ± 3.1%ID/g vs 3.0 ± 0.9%ID/g) and in mice with PANC-1 tumors (5.6 ± 0.6 vs 0.5 ± 0.1%ID/g). In mice implanted orthotopically in the pancreas with the same PDCa PDX, tumor uptake at 24 h p.i. was 4.2 ± 0.2%ID/g. Locoregional metastases of these PDCa tumors in the peritoneum exhibited slightly and significantly lower uptake than the primary tumors (3.1 ± 0.3 vs 4.2 ± 0.3%ID/g; P = 0.02). In mice implanted with different TNBC or HNSCC PDX, tumor uptake at 24 h p.i. was variable and ranged from 3.7 to 11.4%ID/g and 3.8-14.5%ID/g, respectively. MicroSPECT/CT visualized all CLX and PDX tumor xenografts at 4 and 24 h p.i. Dosimetry estimates revealed that in humans, the whole body dose from administration of 740-1110 MBq of 99mTc-PmFab-His6 would be 2-3 mSv, which is less than for a 99mTc-medronate bone scan (4 mSv).
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Affiliation(s)
- Anthony Ku
- Department of Pharmaceutical Sciences , University of Toronto , 144 College Street , Toronto , ON M5S 3M2 , Canada
| | - Conrad Chan
- Department of Pharmaceutical Sciences , University of Toronto , 144 College Street , Toronto , ON M5S 3M2 , Canada
| | - Sadaf Aghevlian
- Department of Pharmaceutical Sciences , University of Toronto , 144 College Street , Toronto , ON M5S 3M2 , Canada
| | - Zhongli Cai
- Department of Pharmaceutical Sciences , University of Toronto , 144 College Street , Toronto , ON M5S 3M2 , Canada
| | | | | | | | | | - Raymond M Reilly
- Department of Pharmaceutical Sciences , University of Toronto , 144 College Street , Toronto , ON M5S 3M2 , Canada.,Department of Medical Imaging , University of Toronto , 263 McCaul Street , Toronto , ON M5T 1W7 , Canada.,Toronto General Research Institute and Joint Department of Medical Imaging , University Health Network , 200 Elizabeth Street , Toronto , ON M5G 2C4 , Canada
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17
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Lodhi NA, Park JY, Kim K, Kim YJ, Shin JH, Lee YS, Im HJ, Jeong JM, Khalid M, Cheon GJ, Lee DS, Kang KW. Development of 99mTc-Labeled Human Serum Albumin with Prolonged Circulation by Chelate-then-Click Approach: A Potential Blood Pool Imaging Agent. Mol Pharm 2019; 16:1586-1595. [PMID: 30869911 DOI: 10.1021/acs.molpharmaceut.8b01258] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Technetium-99m-labeled human serum albumin (99mTc-HSA) has been utilized as a blood pool imaging agent in the clinic for several decades. However, 99mTc-HSA has a short circulation time, which is a critical shortcoming for a blood pool imaging agent. Herein, we developed a novel 99mTc-labeled HSA with a long circulation time using click chemistry and a chelator, 2,2'-dipicolylamine (DPA), (99mTc-DPA-HSA). Specifically, we examined the feasibility of copper-free strain-promoted alkyne-azide cycloaddition (SPAAC) for the incorporation of HSA to the [99mTc (CO)3(H2O)3]+ system by adopting a chelate-then-click approach. In this strategy, a potent chelate system, azide-functionalized DPA, was first complexed with [99mTc (CO)3(H2O)3]+, followed by the SPAAC click reaction with azadibenzocyclooctyne-functionalized HSA (ADIBO-HSA) under biocompatible conditions. Radiolabeling efficiency of azide-functionalized DPA (99mTc-DPA) was >98%. Click conjugation efficiency of 99mTc-DPA with ADIBO-HSA was between 76 and 99% depending on the number of ADIBO moieties attached to HSA. In whole-body in vivo single photon emission computed tomography images, the blood pool uptakes of 99mTc-DPA-HSA were significantly enhanced compared to those of 99mTc-HSA at 10 min, 2, and 6 h after the injection ( P < 0.001, 0.025, and 0.003, respectively). Furthermore, the blood activities of 99mTc-DPA-HSA were 8 times higher at 30 min and 10 times higher at 3 h after the injection compared to those of conventional 99mTc-HSA in ex vivo biodistribution experiment. The results exhibit the potential of 99mTc-DPA-HSA as a blood pool imaging agent and further illustrate the promise of the pre-labeling SPAAC approach for conjugation of heat-sensitive biological targeting vectors with [99mTc (CO)3(H2O)3]+.
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Affiliation(s)
- Nadeem Ahmed Lodhi
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea.,Isotope Production Division , Pakistan Institute of Nuclear Science & Technology (PINSTECH) , P. O. Nilore, 45650 , Islamabad , Pakistan
| | - Ji Yong Park
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea.,Department of Biomedical Sciences , Seoul National University Graduate School , Seoul , 03080 , Republic of Korea
| | - Kyuwan Kim
- Department of Biomedical Sciences , Seoul National University Graduate School , Seoul , 03080 , Republic of Korea
| | - Young Joo Kim
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
| | - Jae Hwan Shin
- Department of Chemistry, Graduate School , Kyung Hee University , Seoul , 02453 , Republic of Korea
| | - Yun-Sang Lee
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
| | - Hyung-Jun Im
- Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology , Seoul National University , Seoul , 08826 , Republic of Korea
| | - Jae Min Jeong
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
| | - Muhammad Khalid
- Isotope Production Division , Pakistan Institute of Nuclear Science & Technology (PINSTECH) , P. O. Nilore, 45650 , Islamabad , Pakistan
| | - Gi Jeong Cheon
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
| | - Dong Soo Lee
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
| | - Keon Wook Kang
- Department of Nuclear Medicine , Seoul National University College of Medicine , Seoul , 03080 , Republic of Korea
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18
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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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19
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Technetium-99m-based simple and convenient radiolabeling of Escherichia coli for in vivo tracking of microorganisms. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-5941-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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20
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Martini P, Boschi A, Cicoria G, Zagni F, Corazza A, Uccelli L, Pasquali M, Pupillo G, Marengo M, Loriggiola M, Skliarova H, Mou L, Cisternino S, Carturan S, Melendez-Alafort L, Uzunov NM, Bello M, Alvarez CR, Esposito J, Duatti A. In-house cyclotron production of high-purity Tc-99m and Tc-99m radiopharmaceuticals. Appl Radiat Isot 2018; 139:325-331. [PMID: 29936404 DOI: 10.1016/j.apradiso.2018.05.033] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 11/28/2022]
Abstract
In the last years, the technology for producing the important medical radionuclide technetium-99m by cyclotrons has become sufficiently mature to justify its introduction as an alternative source of the starting precursor [99mTc][TcO4]- ubiquitously employed for the production of 99mTc-radiopharmaceuticals in hospitals. These technologies make use almost exclusively of the nuclear reaction 100Mo(p,2n)99mTc that allows direct production of Tc-99m. In this study, it is conjectured that this alternative production route will not replace the current supply chain based on the distribution of 99Mo/99mTc generators, but could become a convenient emergency source of Tc-99m only for in-house hospitals equipped with a conventional, low-energy, medical cyclotron. On this ground, an outline of the essential steps that should be implemented for setting up a hospital radiopharmacy aimed at the occasional production of Tc-99m by a small cyclotron is discussed. These include (1) target production, (2) irradiation conditions, (3) separation/purification procedures, (4) terminal sterilization, (5) quality control, and (6) Mo-100 recovery. To address these issues, a comprehensive technology for cyclotron-production of Tc-99m, developed at the Legnaro National Laboratories of the Italian National Institute of Nuclear Physics (LNL-INFN), will be used as a reference example.
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Affiliation(s)
- Petra Martini
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy; Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.
| | - Alessandra Boschi
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.
| | | | | | | | - Licia Uccelli
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Micòl Pasquali
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Gaia Pupillo
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | | | - Massimo Loriggiola
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Hanna Skliarova
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Liliana Mou
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Sara Cisternino
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Sara Carturan
- Department of Physics and Astronomy, University of Padua, Italy
| | | | - Nikolay M Uzunov
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Michele Bello
- Department of Physics and Astronomy, University of Padua, Italy
| | - Carlos Rossi Alvarez
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Juan Esposito
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy
| | - Adriano Duatti
- Legnaro Laboratories, Italian National Institute for Nuclear Physics (INFN), Legnaro, Padua, Italy; Department of Chemical and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
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21
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Mushtaq S, Rho JK, Kang JA, Lee JJ, Kim JY, Nam YR, Yun SJ, Lee GH, Park SH, Lee DE, Kim HS. Radiolabeling and preliminary biodistribution study of 99mTc-labeled antibody-mimetic scaffold protein repebody for initial clearance properties. Bioorg Med Chem Lett 2017; 27:5060-5064. [PMID: 29042166 DOI: 10.1016/j.bmcl.2017.09.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 09/22/2017] [Accepted: 09/24/2017] [Indexed: 10/18/2022]
Abstract
Antibody-mimetic proteins are intensively being developed for biomedical applications including tumor imaging and therapy. Among them, repebody is a new class of protein that consists of highly diverse leucine-rich repeat (LRR) modules. Although all possible biomedical applications with repebody are ongoing, it's in vivo biodistribution and excretion pathway has not yet been explored. In this study, hexahistidine (His6)-tag bearing repebody (rEgH9) was labeled with [99mTc]-tricarbonyl, and biodistribution was performed following intravenous (I.V.) or intraperitoneal (I.P.) injection. Repebody protein was radiolabeled with high radiolabeling efficiency (>90%) and radiolabeled compound was more than 99% pure after purification. Biodistribution data indicates radiotracer has a rapid clearance from blood and excreted through the kidneys for intravenous (I.V.) injection, but comparatively slow clearance for an intraperitoneal (I.P.) injection. SPECT-CT images were found to be in agreement with biodistribution data, high activity was found inside kidneys. The observed result for rapid blood clearance and renal excretion of repebody (rEgH9) provide useful information for the further development of therapeutic strategy.
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Affiliation(s)
- Sajid Mushtaq
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea; Department of Radiation Biotechnology and Applied Radioisotope Science, Korea University of Science and Technology (UST), Daejeon 305-350, Republic of Korea
| | - Jong Kook Rho
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Jung Ae Kang
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Joong-Jae Lee
- Department of Biological Sciences, Korea Advance Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea; Department of Biochemistry, College of Natural Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jung Young Kim
- Department of RI-Convergence Research, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - You Ree Nam
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Seong-Jae Yun
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Gyeong Hee Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Sang Hyun Park
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea
| | - Dong-Eun Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute (KAERI), Jeongeup, Jeonbuk 580-185, Republic of Korea.
| | - Hak-Sung Kim
- Department of Biological Sciences, Korea Advance Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
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22
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Papagiannopoulou D. Technetium-99m radiochemistry for pharmaceutical applications. J Labelled Comp Radiopharm 2017; 60:502-520. [PMID: 28618064 DOI: 10.1002/jlcr.3531] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 06/08/2017] [Accepted: 06/08/2017] [Indexed: 12/14/2022]
Abstract
Technetium-99m (99m Tc) is a widely used radionuclide, and the development of 99m Tc imaging agents continues to be in demand. This overview discusses basic principles of 99m Tc radiopharmaceutical preparation and design and focuses on the 99m Tc radiochemistry relevant to its pharmaceutical applications. The 99m Tc complexes are described based on the most typical examples in each category, keeping up with the state-of-the-art in the field. In addition, the main current strategies to develop targeted 99m Tc radiopharmaceuticals are summarized.
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Affiliation(s)
- Dionysia Papagiannopoulou
- Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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23
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Nawaz S, Mullen GE, Blower PJ, Ballinger JR. A 99mTc-labelled scFv antibody fragment that binds to prostate-specific membrane antigen. Nucl Med Commun 2017; 38:666-671. [PMID: 28598898 PMCID: PMC5508854 DOI: 10.1097/mnm.0000000000000698] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 04/26/2017] [Accepted: 05/04/2017] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Prostate-specific membrane antigen (PSMA) is an extensively studied antigen for imaging prostate cancer. We prepared a single-chain variable fragment (scFv) of J591, a monoclonal antibody that recognises an external epitope of PSMA, incorporating a His-tag for labelling with Tc tricarbonyl, and evaluated its binding using human PCa cell lines. METHODS J591(scFv) was expressed in HEK-293T cells and purified by metal ion affinity chromatography, followed by size exclusion chromatography. Stability and monomer/dimer ratios of purified scFv under different storage conditions were analysed by SDS-PAGE and analytical size exclusion chromatography. J591(scFv) was labelled with (Equation is included in full-text article.)at 37°C for 60 min. The stability of Tc-scFv in human serum was analysed by SDS-PAGE with autoradiography. Cell-binding studies were carried out using PC3LN3 (PSMA negative) and PC3LN3-PSMA (a variant engineered to express PSMA) cell lines. RESULTS J591(scFv) was most stable to dimerisation on storage at -80°C compared with -20 and 4°C. Radiochemical yields of 85-90% were obtained with the final radiochemical purity of more than 99% after purification by gel filtration. In these small-scale studies, the maximum specific activity achieved was 7 MBq/μg. Liquid chromatography-mass spectrometry showed the formation of Tc-J591(scFv), which was radiochemically stable in serum, with no dissociation of Tc over 24 h. Cell-binding assays showed specific binding to PSMA-positive cells. CONCLUSION J591(scFv) can be radiolabelled with (Equation is included in full-text article.)conveniently and efficiently. The labelled product was stable in serum. It showed selective binding to PSMA-positive cells compared with PSMA-negative cells. This potential radiotracer warrants evaluation in PCa xenograft models.
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Affiliation(s)
- Saima Nawaz
- Division of Imaging Sciences and Biomedical Engineering, King’s College London
| | - Gregory E.D. Mullen
- Division of Imaging Sciences and Biomedical Engineering, King’s College London
| | - Philip J. Blower
- Division of Imaging Sciences and Biomedical Engineering, King’s College London
| | - James R. Ballinger
- Department of Nuclear Medicine, Guy’s and St Thomas’ Hospital, London, UK
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24
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Rainone P, Riva B, Belloli S, Sudati F, Ripamonti M, Verderio P, Colombo M, Colzani B, Gilardi MC, Moresco RM, Prosperi D. Development of 99mTc-radiolabeled nanosilica for targeted detection of HER2-positive breast cancer. Int J Nanomedicine 2017; 12:3447-3461. [PMID: 28496321 PMCID: PMC5422330 DOI: 10.2147/ijn.s129720] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The human epidermal growth factor receptor 2 (HER2) is normally associated with a highly aggressive and infiltrating phenotype in breast cancer lesions with propensity to spread into metastases. In clinic, the detection of HER2 in primary tumors and in their metastases is currently based on invasive methods. Recently, nuclear molecular imaging techniques, including positron emission tomography and single photon emission computed tomography (SPECT), allowed the detection of HER2 lesions in vivo. We have developed a 99mTc-radiolabeled nanosilica system, functionalized with a trastuzumab half-chain, able to act as drug carrier and SPECT radiotracer for the identification of HER2-positive breast cancer cells. To this aim, nanoparticles functionalized or not with trastuzumab half-chain, were radiolabeled using the 99mTc-tricarbonyl approach and evaluated in HER2 positive and negative breast cancer models. Cell uptake experiments, combined with flow cytometry and fluorescence imaging, suggested that active targeting provides higher efficiency and selectivity in tumor detection compared to passive diffusion, indicating that our radiolabeling strategy did not affect the nanoconjugate binding efficiency. Ex vivo biodistribution of 99mTc-nanosilica in a SK-BR-3 (HER2+) tumor xenograft at 4 h postinjection was higher in targeted compared to nontargeted nanosilica, confirming the in vitro data. In addition, viability and toxicity tests provided evidence on nanoparticle safety in cell cultures. Our results encourage further assessment of silica 99mTc-nanoconjugates to validate a safe and versatile nanoreporter system for both diagnosis and treatment of aggressive breast cancer.
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Affiliation(s)
- Paolo Rainone
- Institute of Molecular Bioimaging and Physiology, CNR, Segrate (MI).,Doctorate School of Molecular and Translational Medicine, University of Milan, Milan
| | - Benedetta Riva
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milano
| | - Sara Belloli
- Institute of Molecular Bioimaging and Physiology, CNR, Segrate (MI)
| | - Francesco Sudati
- PET and Nuclear Medicine Unit, San Raffaele Scientific Institute, Milan
| | | | - Paolo Verderio
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milano
| | - Miriam Colombo
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milano
| | - Barbara Colzani
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milano
| | | | - Rosa Maria Moresco
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Davide Prosperi
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, Milano
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25
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Macholl S, Finucane CM, Hesterman J, Mather SJ, Pauplis R, Scully D, Sosabowski JK, Jouannot E. High-throughput high-volume nuclear imaging for preclinical in vivo compound screening §. EJNMMI Res 2017; 7:33. [PMID: 28389883 PMCID: PMC5383912 DOI: 10.1186/s13550-017-0281-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 03/22/2017] [Indexed: 11/24/2022] Open
Abstract
Background Preclinical single-photon emission computed tomography (SPECT)/CT imaging studies are hampered by low throughput, hence are found typically within small volume feasibility studies. Here, imaging and image analysis procedures are presented that allow profiling of a large volume of radiolabelled compounds within a reasonably short total study time. Particular emphasis was put on quality control (QC) and on fast and unbiased image analysis. Methods 2–3 His-tagged proteins were simultaneously radiolabelled by 99mTc-tricarbonyl methodology and injected intravenously (20 nmol/kg; 100 MBq; n = 3) into patient-derived xenograft (PDX) mouse models. Whole-body SPECT/CT images of 3 mice simultaneously were acquired 1, 4, and 24 h post-injection, extended to 48 h and/or by 0–2 h dynamic SPECT for pre-selected compounds. Organ uptake was quantified by automated multi-atlas and manual segmentations. Data were plotted automatically, quality controlled and stored on a collaborative image management platform. Ex vivo uptake data were collected semi-automatically and analysis performed as for imaging data. Results >500 single animal SPECT images were acquired for 25 proteins over 5 weeks, eventually generating >3500 ROI and >1000 items of tissue data. SPECT/CT images clearly visualized uptake in tumour and other tissues even at 48 h post-injection. Intersubject uptake variability was typically 13% (coefficient of variation, COV). Imaging results correlated well with ex vivo data. Conclusions The large data set of tumour, background and systemic uptake/clearance data from 75 mice for 25 compounds allows identification of compounds of interest. The number of animals required was reduced considerably by longitudinal imaging compared to dissection experiments. All experimental work and analyses were accomplished within 3 months expected to be compatible with drug development programmes. QC along all workflow steps, blinding of the imaging contract research organization to compound properties and automation provide confidence in the data set. Additional ex vivo data were useful as a control but could be omitted from future studies in the same centre. For even larger compound libraries, radiolabelling could be expedited and the number of imaging time points adapted to increase weekly throughput. Multi-atlas segmentation could be expanded via SPECT/MRI; however, this would require an MRI-compatible mouse hotel. Finally, analysis of nuclear images of radiopharmaceuticals in clinical trials may benefit from the automated analysis procedures developed. Electronic supplementary material The online version of this article (doi:10.1186/s13550-017-0281-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sven Macholl
- inviCRO Ltd, Charterhouse Square, London, EC1M 6BQ, UK. .,Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK.
| | - Ciara M Finucane
- inviCRO Ltd, Charterhouse Square, London, EC1M 6BQ, UK.,Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Jacob Hesterman
- inviCRO, LLC, 27 Dry Dock Avenue, 7th Floor West, Boston, MA, 02210, USA
| | - Stephen J Mather
- Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Rachel Pauplis
- inviCRO, LLC, 27 Dry Dock Avenue, 7th Floor West, Boston, MA, 02210, USA
| | - Deirdre Scully
- inviCRO, LLC, 27 Dry Dock Avenue, 7th Floor West, Boston, MA, 02210, USA
| | - Jane K Sosabowski
- Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Erwan Jouannot
- Sanofi Aventis Recherche Développement, 1, Avenue Pierre Brossolette, 91380, Chilly-Mazarin, France
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26
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Pettenuzzo A, Pigot R, Ronconi L. Vitamin B12-Metal Conjugates for Targeted Chemotherapy and Diagnosis: Current Status and Future Prospects. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601217] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Andrea Pettenuzzo
- School of Chemistry; National University of Ireland Galway; University Road H91 CF50 Galway Ireland
| | - Rebecca Pigot
- School of Chemistry; National University of Ireland Galway; University Road H91 CF50 Galway Ireland
| | - Luca Ronconi
- School of Chemistry; National University of Ireland Galway; University Road H91 CF50 Galway Ireland
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27
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Engineering hepatitis B virus core particles for targeting HER2 receptors in vitro and in vivo. Biomaterials 2016; 120:126-138. [PMID: 28056402 PMCID: PMC5300899 DOI: 10.1016/j.biomaterials.2016.12.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 12/11/2022]
Abstract
Hepatitis B Virus core (HBc) particles have been studied for their potential as drug delivery vehicles for cancer therapy. HBc particles are hollow nano-particles of 30–34 nm diameter and 7 nm thick envelopes, consisting of 180–240 units of 21 kDa core monomers. They have the capacity to assemble/dis-assemble in a controlled manner allowing encapsulation of various drugs and other biomolecules. Moreover, other functional motifs, i.e. receptors, receptor binding sequences, peptides and proteins can be expressed. This study focuses on the development of genetically modified HBc particles to specifically recognise and target human epidermal growth factor receptor-2 (HER2)-expressing cancer cells, in vitro and in vivo, for future cancer therapy. The non-specific binding capacity of wild type HBc particles was reduced by genetic deletion of the sequence encoding arginine-rich domains. A specific HER2-targeting was achieved by expressing the ZHER2 affibodies on the HBc particles surface. In vitro studies showed specific uptake of ZHER2-ΔHBc particles in HER2 expressing cancer cells. In vivo studies confirmed positive uptake of ZHER2-ΔHBc particles in HER2-expressing tumours, compared to non-targeted ΔHBc particles in intraperitoneal tumour-bearing mice models. The present results highlight the potential of these nanocarriers in targeting HER2-positive metastatic abdominal cancer following intra-peritoneal administration.
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28
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Adumeau P, Sharma SK, Brent C, Zeglis BM. Site-Specifically Labeled Immunoconjugates for Molecular Imaging--Part 2: Peptide Tags and Unnatural Amino Acids. Mol Imaging Biol 2016; 18:153-65. [PMID: 26754791 DOI: 10.1007/s11307-015-0920-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular imaging using radioisotope- or fluorophore-labeled antibodies is increasingly becoming a critical component of modern precision medicine. Yet despite this promise, the vast majority of these immunoconjugates are synthesized via the random coupling of amine-reactive bifunctional probes to lysines within the antibody, a process that can result in heterogeneous and poorly defined constructs with suboptimal pharmacological properties. In an effort to circumvent these issues, the last 5 years have played witness to a great deal of research focused on the creation of effective strategies for the site-specific attachment of payloads to antibodies. These chemoselective modification methods yield immunoconjugates that are more homogenous and better defined than constructs created using traditional synthetic approaches. Moreover, site-specifically labeled immunoconjugates have also been shown to exhibit superior in vivo behavior compared to their randomly modified cousins. The over-arching goal of this two-part review is to provide a broad yet detailed account of the various site-specific bioconjugation approaches that have been used to create immunoconjugates for positron emission tomography (PET), single photon emission computed tomography (SPECT), and fluorescence imaging. In Part 1, we covered site-specific bioconjugation techniques based on the modification of cysteine residues and the chemoenzymatic manipulation of glycans. In Part 2, we will detail two families of bioconjugation approaches that leverage biochemical tools to achieve site-specificity. First, we will discuss modification methods that employ peptide tags either as sites for enzyme-catalyzed ligations or as radiometal coordination architectures. And second, we will examine bioconjugation strategies predicated on the incorporation of unnatural or non-canonical amino acids into antibodies via genetic engineering. Finally, we will compare the advantages and disadvantages of the modification strategies covered in both parts of the review and offer a brief discussion of the overall direction of the field.
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Affiliation(s)
- Pierre Adumeau
- Department of Chemistry and Biochemistry, Hunter College and the Graduate Center of the City University of New York, 413 East 69th Street, New York, NY, 10021, USA
| | - Sai Kiran Sharma
- Department of Chemistry and Biochemistry, Hunter College and the Graduate Center of the City University of New York, 413 East 69th Street, New York, NY, 10021, USA
| | - Colleen Brent
- Department of Chemistry and Biochemistry, Hunter College and the Graduate Center of the City University of New York, 413 East 69th Street, New York, NY, 10021, USA
| | - Brian M Zeglis
- Department of Chemistry and Biochemistry, Hunter College and the Graduate Center of the City University of New York, 413 East 69th Street, New York, NY, 10021, USA. .,Department of Radiology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA.
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29
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De Tommaso G, Celentano V, Malgieri G, Fattorusso R, Romanelli A, D'Andrea LD, Iuliano M, Isernia C. fac-[Re(H2O)3(CO)3]+Complexed with Histidine and Imidazole in Aqueous Solution: Speciation, Affinity and Binding Features. ChemistrySelect 2016. [DOI: 10.1002/slct.201600817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gaetano De Tommaso
- Department of Chemical Sciences; University of Naples “Federico II”; Cupa Nuova Cintia 21- 80126 Naples ITALY
| | - Veronica Celentano
- Institute of Biostructure and Bioimaging CNR; Via Mezzocannone 16-80134 Naples ITALY
| | - Gaetano Malgieri
- Department of Environmental, Biological and Pharmaceutical Sciences; Technologies, Second University of Naples; Via Vivaldi 43-81100 Caserta Italy
| | - Roberto Fattorusso
- Department of Environmental, Biological and Pharmaceutical Sciences; Technologies, Second University of Naples; Via Vivaldi 43-81100 Caserta Italy
- Interuniversity Research Centre on Bioactive Peptides; Via Mezzocannone 16-80134 Naples Italy
| | - Alessandra Romanelli
- Department of Pharmacy; University of Naples “Federico II”; Via Mezzocannone 16-80134 Naples Italy
- Interuniversity Research Centre on Bioactive Peptides; Via Mezzocannone 16-80134 Naples Italy
| | - Luca Domenico D'Andrea
- Institute of Biostructure and Bioimaging CNR; Via Mezzocannone 16-80134 Naples ITALY
- Interuniversity Research Centre on Bioactive Peptides; Via Mezzocannone 16-80134 Naples Italy
| | - Mauro Iuliano
- Department of Chemical Sciences; University of Naples “Federico II”; Cupa Nuova Cintia 21- 80126 Naples ITALY
| | - Carla Isernia
- Department of Environmental, Biological and Pharmaceutical Sciences; Technologies, Second University of Naples; Via Vivaldi 43-81100 Caserta Italy
- Interuniversity Research Centre on Bioactive Peptides; Via Mezzocannone 16-80134 Naples Italy
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