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Escudero-Castellanos A, Kurth J, Imlimthan S, Menéndez E, Pilatis E, Moon ES, Läppchen T, Rathke H, Schwarzenböck SM, Krause BJ, Rösch F, Rominger A, Gourni E. Translational assessment of a DATA-functionalized FAP inhibitor with facile 68Ga-labeling at room temperature. Eur J Nucl Med Mol Imaging 2023; 50:3202-3213. [PMID: 37284857 PMCID: PMC10541845 DOI: 10.1007/s00259-023-06285-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 05/19/2023] [Indexed: 06/08/2023]
Abstract
PURPOSE The present study aims at evaluating the preclinical and the clinical performance of [68Ga]Ga-DATA5m.SA.FAPi, which has the advantage to be labeled with gallium-68 at room temperature. METHODS [68Ga]Ga-DATA5m.SA.FAPi was assessed in vitro on FAP-expressing stromal cells, followed by biodistribution and in vivo imaging on prostate and glioblastoma xenografts. Moreover, the clinical assessment of [68Ga]Ga-DATA5m.SA.FAPi was conducted on six patients with prostate cancer, aiming on investigating, biodistribution, biokinetics, and determining tumor uptake. RESULTS [68Ga]Ga-DATA5m.SA.FAPi is quantitatively prepared in an instant kit-type version at room temperature. It demonstrated high stability in human serum, affinity for FAP in the low nanomolar range, and high internalization rate when associated with CAFs. Biodistribution and PET studies in prostate and glioblastoma xenografts revealed high and specific tumor uptake. Elimination of the radiotracer mainly occurred through the urinary tract. The clinical data are in accordance with the preclinical data concerning the organ receiving the highest absorbed dose (urinary bladder wall, heart wall, spleen, and kidneys). Different to the small-animal data, uptake of [68Ga]Ga-DATA5m.SA.FAPi in tumor lesions is rapid and stable and tumor-to-organ and tumor-to-blood uptake ratios are high. CONCLUSION The radiochemical, preclinical, and clinical data obtained in this study strongly support further development of [68Ga]Ga-DATA5m.SA.FAPi as a diagnostic tool for FAP imaging.
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Affiliation(s)
| | - Jens Kurth
- Department of Nuclear Medicine, Rostock University Medical Centre, Rostock, Germany
| | - Surachet Imlimthan
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Elena Menéndez
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Eirinaios Pilatis
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Euy Sung Moon
- Department of Chemistry-TRIGA site, Johannes Gutenberg-University of Mainz, Mainz, Germany
| | - Tilman Läppchen
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Hendrik Rathke
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Bernd J Krause
- Department of Nuclear Medicine, Rostock University Medical Centre, Rostock, Germany
| | - Frank Rösch
- Department of Chemistry-TRIGA site, Johannes Gutenberg-University of Mainz, Mainz, Germany
| | - Axel Rominger
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Eleni Gourni
- Department of Nuclear Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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Imlimthan S, Menéndez E, Escudero-Castellanos A, Moon ES, Läppchen T, Rathke H, Afshar-Oromieh A, Roesch F, Rominger A, Gourni E. Investigation of 68Ga/177Lu-labeled FAP-based inhibitor for diagnostic and therapeutic applications. Nucl Med Biol 2022. [DOI: 10.1016/s0969-8051(22)00147-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Escudero-Castellanos A, Imlimthan S, Menéndez E, Moon ES, Läppchen T, Rathke H, Afshar-Oromieh A, Roesch F, Rominger A, Gourni E. Tumor stroma diagnostic imaging by a 68Ga-coupled small-molecule fibroblast activation protein (FAP) inhibitor: first pre-clinical data. Nucl Med Biol 2022. [DOI: 10.1016/s0969-8051(22)00388-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Trujillo-Benítez D, Ferro-Flores G, Morales-Avila E, Jiménez-Mancilla N, Ancira-Cortez A, Ocampo-García B, Santos-Cuevas C, Escudero-Castellanos A, Luna-Gutiérrez M, Azorín-Vega E. Synthesis and Biochemical Evaluation of Samarium-153 Oxide Nanoparticles Functionalized with iPSMA-Bombesin Heterodimeric Peptide. J Biomed Nanotechnol 2020; 16:689-701. [PMID: 32919488 DOI: 10.1166/jbn.2020.2924] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Developments in the design of lanthanide oxide nanoparticles (NPs) have unleashed a wide variety of biomedical applications. Several types of hepatic cancer cells overexpress two proteins: the gastrin-releasing peptide receptor (GRPr), which specifically recognizes the bombesin (BN) peptide, and the prostate-specific membrane antigen (PSMA), which specifically binds to several peptides that inhibit its activity (iPSMA). This research synthesized and physicochemically characterized Sm₂O₃ nanoparticles functionalized with the iPSMA-BN heterodimeric peptide and studied the effects on their structural, biochemical and preclinical properties after activation by neutron irradiation for possible use in molecular dual-targeted radiotherapy of hepatocellular carcinoma. The Sm₂O₃ NPs were synthesized by the precipitation-calcination method and functionalized with iPSMA-BN peptide using the DOTA macrocycle as a linking agent. Analysis of physicochemical characterization via TEM, EDS, XRD, UV-Vis, FT-IR, DSL, and zeta potential results showed the formation of Sm₂O₃-iPSMA-BN NPs (94.23 ± 5.98 nm), and their physicochemical properties were not affected after neutron activation. The nanosystem showed a high affinity with respect to PSMA and GRPr in HepG2 cells ( Kd = 6.6 ± 1.6 nM) and GRPr in PC3 cells ( Kd = 10.6 ± 1.9 nM). 153Sm₂O₃-iPSMA-BN NPs exhibited radioluminescent properties, making possible in vivo optical imaging of their biodistribution in mice. The results obtained from this research support further preclinical studies designed to evaluate the dosimetry and therapeutic efficacy of 153Sm₂O₃-iPSMA-BN nanoparticles for in vivo imaging and molecular dual-targeted radiotherapy of liver tumors overexpressing PSMA and/or GRPr proteins.
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Ancira-Cortez A, Ferro-Flores G, Jiménez-Mancilla N, Morales-Avila E, Trujillo-Benítez D, Ocampo-García B, Santos-Cuevas C, Escudero-Castellanos A, Luna-Gutiérrez M. Synthesis, chemical and biochemical characterization of Lu 2O 3-iPSMA nanoparticles activated by neutron irradiation. Mater Sci Eng C Mater Biol Appl 2020; 117:111335. [PMID: 32919684 DOI: 10.1016/j.msec.2020.111335] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/30/2020] [Accepted: 08/01/2020] [Indexed: 11/16/2022]
Abstract
Among the nanomaterials, rare sesquioxides (lanthanide oxides such as Lu2O3) are of interest due to their adequate thermal conductivity, excellent chemical stability, and high light output. The prostate-specific membrane antigen (PSMA) is an integral multifunctional protein overexpressed in various types of cancer cells. The radiolabeled PSMA inhibitor peptides (iPSMA) have demonstrated their usefulness as specific probes in the treatment and detection of a wide variety of neoplasms, mainly due to their high in vivo recognition by the PSMA protein. The objective of this research was to synthesize Lu2O3-iPSMA nanoparticles (NPs) and characterize their physicochemical properties before and after neutron activation, as well as to assess their biodistribution profile and in vitro potential to target cells overexpressing PSMA. The Lu2O3 NPs were synthesized by the precipitation-calcination method and conjugated to the iPSMA peptide using DOTA (1,4,7,10-tetraazocyclodecane-N,N',N″,N‴-tetraacetic acid) as a linking agent. Results of the physicochemical characterization by FT-IR and UV-Vis spectroscopies, SEM, TEM, DLS, HRTEM, SAED, DSC-TGA, and X-ray diffraction indicated the formation of Lu2O3-iPSMA NPs (diameter of 29.98 ± 9.07 nm), which were not affected in their physicochemical properties after neutron activation. 177Lu2O3-iPSMA NPs showed high affinity (Kd = 5.7 ± 1.9 nM) for the PSMA protein, evaluated by the saturation assay on HepG2 hepatocellular carcinoma cells (PSMA-positive). The biodistribution profile of the nanosystem in healthy mice showed the main uptake in the liver. After irradiation, radioactive Lu2O3-iPSMA NPs exhibited radioluminescent properties, making the in vivo acquisition of their biodistribution, via optical imaging, possible. The results obtained from this research validate the execution of additional preclinical studies with the objective of evaluating the potential of the 177Lu2O3-iPSMA NPs for the targeted radiotherapy and in vivo imaging of tumors overexpressing the PSMA protein.
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Affiliation(s)
- A Ancira-Cortez
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico; Facultad de Química, Universidad Autónoma del Estado de México, Estado de México 50180, Mexico
| | - G Ferro-Flores
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico.
| | - N Jiménez-Mancilla
- Cátedras CONACyT, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico.
| | - E Morales-Avila
- Facultad de Química, Universidad Autónoma del Estado de México, Estado de México 50180, Mexico
| | - D Trujillo-Benítez
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico; Facultad de Química, Universidad Autónoma del Estado de México, Estado de México 50180, Mexico
| | - B Ocampo-García
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico
| | - C Santos-Cuevas
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico
| | - A Escudero-Castellanos
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico
| | - M Luna-Gutiérrez
- Departamento de Materiales Radiactivos, Instituto Nacional de Investigaciones Nucleares, Estado de México 52750, Mexico
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Mendoza-Figueroa MJ, Escudero-Castellanos A, Ramirez-Nava GJ, Ocampo-García BE, Santos-Cuevas CL, Ferro-Flores G, Pedraza-Lopez M, Avila-Rodriguez MA. Preparation and preclinical evaluation of 68Ga-iPSMA-BN as a potential heterodimeric radiotracer for PET-imaging of prostate cancer. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6285-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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González-Ruíz A, Ferro-Flores G, Jiménez-Mancilla N, Escudero-Castellanos A, Ocampo-García B, Luna-Gutiérrez M, Santos-Cuevas C, Morales-Avila E, Isaac-Olivé K. In vitro and in vivo synergistic effect of radiotherapy and plasmonic photothermal therapy on the viability of cancer cells using 177Lu–Au-NLS-RGD-Aptamer nanoparticles under laser irradiation. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6266-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Escudero-Castellanos A, Ocampo-García BE, Domínguez-García MV, Flores-Estrada J, Flores-Merino MV. Hydrogels based on poly(ethylene glycol) as scaffolds for tissue engineering application: biocompatibility assessment and effect of the sterilization process. J Mater Sci Mater Med 2016; 27:176. [PMID: 27752974 DOI: 10.1007/s10856-016-5793-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 10/05/2016] [Indexed: 05/16/2023]
Abstract
Hydrogels are suitable materials to promote cell proliferation and tissue support because of their hydrophilic nature, porous structure and sticky properties. However, hydrogel synthesis involves the addition of additives that can increase the risk of inducing cytotoxicity. Sterilization is a critical process for hydrogel clinical use as a proper scaffold for tissue engineering. In this study, poly(ethylene glycol) (PEG), poly(ethylene glycol)-chitosan (PEG-CH) and multi-arm PEG hydrogels were synthesized by free radical polymerization and sterilized by gamma irradiation or disinfected using 70 % ethanol. The biocompatibility assessment in human fibroblasts and hemocompatibility studies (hemolysis, platelet aggregation, morphology of mononuclear cells and viability) in peripheral blood from healthy volunteers (ex vivo), were performed. The sterilization or disinfection effect on hydrogel structures was evaluated by FT-IR spectroscopy. Results indicated that hydrogels do not induce any damage to fibroblasts, erythrocytes, platelets or mononuclear cells. Moreover, there was no significant difference in the biocompatibility after the sterilization or disinfection treatment. However, after gamma irradiation, several IR spectroscopic bands were shifted to higher or lower energies with different intensity in all hydrogels. In particular, several bands associated to carboxyl or hydroxyl groups were slightly shifted, possibly associated to scission reactions. The disinfection treatment (70 % ethanol) and γ-irradiation at 13.83 ± 0.7 kGy did not induce morphological damages and yielded sterile and biocompatible PEG hydrogels potentially useful for clinical applications.
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Affiliation(s)
- Alondra Escudero-Castellanos
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas, Universidad Autónoma del Estado de México, Jesús Carranza 200, Toluca, Estado de México, 50130, Mexico
- Facultad de Medicina, Universidad Autónoma del Estado de México, 50180, Toluca, Mexico
- Instituto Nacional de Investigaciones Nucleares, Estado de México, Ocoyoacac, 52750, Mexico
| | - Blanca E Ocampo-García
- Instituto Nacional de Investigaciones Nucleares, Estado de México, Ocoyoacac, 52750, Mexico
| | - Ma Victoria Domínguez-García
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas, Universidad Autónoma del Estado de México, Jesús Carranza 200, Toluca, Estado de México, 50130, Mexico
| | - Jaime Flores-Estrada
- Facultad de Química, Universidad Autónoma del Estado de México, 50180, Toluca, Mexico
| | - Miriam V Flores-Merino
- Laboratorio de Biología Molecular y Celular, Centro de Investigación en Ciencias Médicas, Universidad Autónoma del Estado de México, Jesús Carranza 200, Toluca, Estado de México, 50130, Mexico.
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