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Tassano M, Camacho X, Freire T, Perroni C, da Costa V, Cabrera M, García MF, Fernandez M, Gambini JP, Cabral P, Osinaga E. Enhanced Tumor Targeting of Radiolabeled Mouse/Human Chimeric Anti-Tn Antibody in Losartan-Treated Mice Bearing Tn-Expressing Lung Tumors. Cancer Biother Radiopharm 2024; 39:337-348. [PMID: 38215243 DOI: 10.1089/cbr.2023.0138] [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: 01/14/2024] Open
Abstract
Aim: ChiTn, a mouse/human chimeric anti-Tn monoclonal antibody, was radiolabeled with iodine-131 (131I) and technetium-99m (99mTc) to assess its biodistribution and internalization in Tn-expressing (Tn+) and wild-type (Tn-) LL/2 lung cancer cells. Results: Selective accumulation and gradual internalization of ChiTn were observed in Tn+ cells. Biodistribution in mice with both Tn+ or Tn- lung tumors indicated that the uptake of radiolabeled ChiTn within tumors increased over time. Dual-labeling experiments with 99mTc and 131I showed different biodistribution patterns, with 99mTc exhibiting higher values in the liver, spleen, and kidneys, while 131I showed higher uptake in the thyroid and stomach. However, tumor uptake did not significantly differ between Tn+ and Tn- tumors. To improve tumor targeting, Losartan, an antihypertensive drug known to enhance tumor perfusion and drug delivery, was investigated. Biodistribution studies in Losartan-treated mice revealed significantly higher radiolabeled ChiTn uptake in Tn+ tumors. No significant changes were observed in the uptake of the control molecule IgG-HYNIC™99mTc. Conclusions: These findings demonstrate the enhanced tumor targeting of radiolabeled ChiTn in Losartan-treated mice with Tn-expressing lung tumors. They highlight the potential of ChiTn as a theranostic agent for cancer treatment and emphasize the importance of Losartan as an adjunctive treatment to improve tumor perfusion and drug delivery.
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Affiliation(s)
- Marcos Tassano
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Ximena Camacho
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Teresa Freire
- Laboratorio de Inmunomodulacion y Desarrollo de Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo, Uruguay
| | - Carolina Perroni
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Valeria da Costa
- Laboratorio de Inmunomodulacion y Desarrollo de Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo, Uruguay
| | - Mirel Cabrera
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Maria Fernanda García
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Marcelo Fernandez
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Juan Pablo Gambini
- Centro de Medicina Nuclear e Imagenología Molecular, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Pablo Cabral
- Area de Radiofarmacia, Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Eduardo Osinaga
- Laboratorio de Inmunomodulacion y Desarrollo de Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo, Uruguay
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo, Uruguay
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Cabrera M, Lecot N, Fernández M, Gambini JP, Porcal W, Cabral P. 99mTc Stearyl 6-(benzylidenehydrazinyl) nicotinamide Liposomes as Tumor Permeability Evaluation Tracer. AAPS PharmSciTech 2021; 22:115. [PMID: 33763814 DOI: 10.1208/s12249-021-01984-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/08/2021] [Indexed: 12/13/2022] Open
Abstract
Nanomedicine is a highly demanded discipline. Liposomes have seen an increased attention due to their physicochemical properties that allow them to act as nanocarriers of drugs and also of radioisotopes that can be used to diagnose and treat cancer. In order to obtain a novel permeability cancer imaging agent based on 99mTc-labeled liposomes, we describe microwave-assisted synthesis of stearyl 6-(benzylidenehydrazinyl) nicotinamide lipid, which was included in two formulations: nanometric hydrazinonicotinic acid (HYNIC) liposome and its PEGylated coated analogue, HYNIC-PEG liposome. Radiolabeling with 99mTc via stearyl 6-(benzylidenehydrazinyl) nicotinamide was found to be easy, reproducible, and stable, revealing high radiochemical purity (94 ± 1.7%) for both liposomal formulations. Biodistribution at 4 h and 24 h and scintigraphic images at 4 h were performed in normal and melanoma-bearing C57BL/6 mice. Biodistribution studies at 4 h showed tumor uptake of 99mTc-HYNIC liposome and 99mTc-HYNIC-PEG liposome (1.1 ± 0.6 and 2.5 ± 0.4, respectively) and also at 24 h p.i. (1.8 ± 0.5 and 3.0 ± 1.1, respectively). Scintigraphic images showed appreciable tumor uptake in melanoma tumor-bearing mice with both liposomal formulations. Our results show that 99mTc stearyl 6-(benzylidenehydrazinyl) nicotinamide liposomes can be used as diagnostic noninvasive in vivo tumor-targeting agents capable of evaluating tumor permeability and development who can be used in personalized chemotherapy planning.
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García MF, Gallazzi F, Junqueira MDS, Fernández M, Camacho X, Mororó JDS, Faria D, Carneiro CDG, Couto M, Carrión F, Pritsch O, Chammas R, Quinn T, Cabral P, Cerecetto H. Synthesis of hydrophilic HYNIC-[1,2,4,5]tetrazine conjugates and their use in antibody pretargeting with99mTc. Org Biomol Chem 2018; 16:5275-5285. [DOI: 10.1039/c8ob01255e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Pretargeted imaging is shown to be an attractive strategy to overcome disadvantages associated with traditional radioimmunoconjugates.
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Sicco E, Báez J, Margenat J, García F, Ibarra M, Cabral P, Moreno M, Cerecetto H, Calzada V. Derivatizations of Sgc8-c aptamer to prepare metallic radiopharmaceuticals as imaging diagnostic agents: Syntheses, isolations, and physicochemical characterizations. Chem Biol Drug Des 2017; 91:747-755. [PMID: 29080264 DOI: 10.1111/cbdd.13135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/09/2017] [Accepted: 10/04/2017] [Indexed: 12/31/2022]
Abstract
Aptamers, oligonucleotides with the capability to bind to a target through non-covalent bonds with high affinity and specificity, have a great number of advantages as scaffold to prepare molecular imaging agents. In this sense, we have performed post-SELEX modifications of a truncated aptamer, Sgc8-c, which bind to protein tyrosine kinase 7 to obtain a specific molecular targeting probe for in vivo diagnosis and in vivo therapy. Herein, we describe the synthetic efforts to prepare conjugates between Sgc8-c and different metallic ions chelator moieties in short times, high purities, and adequate yields. The selected chelator moieties, derived from 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid, 2-benzyl-1,4,7-triazacyclononane-1,4,7-triacetic acid, and 6-hydrazinonicotinic acid, were covalently attached at the 5'-aptamer position yielding the expected products which were stable in aqueous solution up to 75°C and in typical aptamer storage conditions at least for 30 days.
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Affiliation(s)
- Estefanía Sicco
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay.,Departamento de Desarrollo Biotecnológico, Facultad de Medicina, Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Jessica Báez
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay.,Facultad de Química, Centro de Evaluación de Biodisponibilidad y Bioequivalencia de Medicamentos, Universidad de la República, Montevideo, Uruguay
| | - Jimena Margenat
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay
| | - Fernanda García
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay
| | - Manuel Ibarra
- Facultad de Química, Centro de Evaluación de Biodisponibilidad y Bioequivalencia de Medicamentos, Universidad de la República, Montevideo, Uruguay
| | - Pablo Cabral
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay
| | - María Moreno
- Departamento de Desarrollo Biotecnológico, Facultad de Medicina, Instituto de Higiene, Universidad de la República, Montevideo, Uruguay
| | - Hugo Cerecetto
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay
| | - Victoria Calzada
- Área de Radiofarmacia, Facultad de Ciencias, Centro de Investigaciones Nucleares, Universidad de la República, Montevideo, Uruguay
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Camacho X, Machado CL, García MF, Gambini JP, Banchero A, Fernández M, Oddone N, Bertolini Zanatta D, Rosal C, Buchpiguel CA, Chammas R, Riva E, Cabral P. Technetium-99m- or Cy7-Labeled Rituximab as an Imaging Agent for Non-Hodgkin Lymphoma. Oncology 2017; 92:229-242. [DOI: 10.1159/000452419] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 10/10/2016] [Indexed: 02/01/2023]
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Calzada V, Moreno M, Newton J, González J, Fernández M, Gambini JP, Ibarra M, Chabalgoity A, Deutscher S, Quinn T, Cabral P, Cerecetto H. Development of new PTK7-targeting aptamer-fluorescent and -radiolabelled probes for evaluation as molecular imaging agents: Lymphoma and melanoma in vivo proof of concept. Bioorg Med Chem 2016; 25:1163-1171. [PMID: 28089349 DOI: 10.1016/j.bmc.2016.12.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/05/2016] [Accepted: 12/19/2016] [Indexed: 11/26/2022]
Abstract
Aptamers are single-stranded oligonucleotides that recognize molecular targets with high affinity and specificity. Aptamer that selectively bind to the protein tyrosine kinase-7 (PTK7) receptor, overexpressed on many cancers, has been labelled as probes for molecular imaging of cancer. Two new PTK7-targeting aptamer probes were developed by coupling frameworks from the fluorescent dye AlexaFluor647 or the 6-hydrazinonicotinamide (HYNIC) chelator-labelled to 99mTc. The derivatizations via a 5'-aminohexyl terminal linker were done at room temperature and under mild buffer conditions. Physicochemical and biological controls for both imaging agents were performed verifying the integrity of the aptamer-conjugates by HPLC. Recognition of melanoma (B16F1) and lymphoma (A20) mouse cell lines by the aptamer was studied using cell binding, flow cytometry and confocal microscopy. Finally, in vivo imaging studies in tumour-bearing mice were performed. The new probes were able to bind to melanoma and lymphoma cell lines in vitro, the in vivo imaging in tumour-bearing mice showed different uptake behaviours showing for the fluorescent conjugate good uptake by B cell lymphoma while the radiolabelled conjugate did not display tumour uptake due to its high extravascular distribution, and both showed rapid clearance properties in tumour-bearing mice.
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Affiliation(s)
- Victoria Calzada
- Área de Radiofarmacia-Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay
| | - María Moreno
- Departamento de Desarrollo Biotecnológico-Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Jessica Newton
- Department of Biochemistry, University of Missouri, Columbia, MO, USA; Harry S Truman Veterans' Administration Hospital, Columbia, MO, USA
| | - Joel González
- Laboratorio de Experimentación Animal-Centro de Investigaciones Nucleares, Facultad de Ciencias-Universidad de la República, Montevideo, Uruguay
| | - Marcelo Fernández
- Laboratorio de Experimentación Animal-Centro de Investigaciones Nucleares, Facultad de Ciencias-Universidad de la República, Montevideo, Uruguay
| | - Juan Pablo Gambini
- Centro de Medicina Nuclear-Hospital de Clínicas, Universidad de la República, Montevideo, Uruguay
| | - Manuel Ibarra
- Centro de Evaluación de Biodisponibilidad y Bioequivalencia de Medicamentos, Universidad de la República, Montevideo, Uruguay
| | - Alejandro Chabalgoity
- Departamento de Desarrollo Biotecnológico-Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Susan Deutscher
- Department of Biochemistry, University of Missouri, Columbia, MO, USA; Harry S Truman Veterans' Administration Hospital, Columbia, MO, USA
| | - Thomas Quinn
- Department of Biochemistry, University of Missouri, Columbia, MO, USA; Harry S Truman Veterans' Administration Hospital, Columbia, MO, USA
| | - Pablo Cabral
- Área de Radiofarmacia-Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay
| | - Hugo Cerecetto
- Área de Radiofarmacia-Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, 11400 Montevideo, Uruguay.
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Shi NQ, Lai HW, Zhang Y, Feng B, Xiao X, Zhang HM, Li ZQ, Qi XR. On the inherent properties of Soluplus and its application in ibuprofen solid dispersions generated by microwave-quench cooling technology. Pharm Dev Technol 2016; 23:573-586. [DOI: 10.1080/10837450.2016.1256409] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nian-Qiu Shi
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, Changchun, Jilin Province, China
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Hong-Wei Lai
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Yong Zhang
- College of Life Science, Jilin University, Changchun, Jilin Province, China
| | - Bo Feng
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Xiao Xiao
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Hong-Mei Zhang
- School of Pharmacy, Jilin Medical University, Jilin, China
| | - Zheng-Qiang Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, College of Life Science, Jilin University, Changchun, Jilin Province, China
| | - Xian-Rong Qi
- Department of Pharmaceutics, School of Pharmaceutical Science, Peking University, Beijing, China
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(99m)Tc-bioorthogonal click chemistry reagent for in vivo pretargeted imaging. Bioorg Med Chem 2016; 24:1209-15. [PMID: 26875936 DOI: 10.1016/j.bmc.2016.01.046] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 01/17/2016] [Accepted: 01/26/2016] [Indexed: 12/15/2022]
Abstract
Metal-free click chemistry has become an important tool for pretargeted approaches in the molecular imaging field. The application of bioorthogonal click chemistry between a pretargeted trans-cyclooctene (TCO) derivatized monoclonal antibody (mAb) and a (99m)Tc-modified 1,2,4,5-tetrazine for tumor imaging was examined in vitro and in vivo. The HYNIC tetrazine compound was synthesized and structurally characterized, confirming its identity. Radiolabeling studies demonstrated that the HYNIC tetrazine was labeled with (99m)Tc at an efficiency of >95% and was radiochemically stable. (99m)Tc-HYNIC tetrazine reacted with the TCO-CC49 mAb in vitro demonstrating its selective reactivity. In vivo biodistribution studies revealed non-specific liver and GI uptake due to the hydrophobic property of the compound, however pretargeted SPECT imaging studies demonstrated tumor visualization confirming the success of the cycloaddition reaction in vivo. These results demonstrated the potential of (99m)Tc-HYNIC-tetrazine for tumor imaging with pretargeted mAbs.
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