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Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature

PURPOSE: The present study aims at evaluating the preclinical and the clinical performance of [(68)Ga]Ga-DATA(5m.)SA.FAPi, which has the advantage to be labeled with gallium-68 at room temperature. METHODS: [(68)Ga]Ga-DATA(5m).SA.FAPi was assessed in vitro on FAP-expressing stromal cells, followed b...

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Autores principales: Escudero-Castellanos, Alondra, Kurth, Jens, Imlimthan, Surachet, Menéndez, Elena, Pilatis, Eirinaios, Moon, Euy Sung, Läppchen, Tilman, Rathke, Hendrik, Schwarzenböck, Sarah M., Krause, Bernd J., Rösch, Frank, Rominger, Axel, Gourni, Eleni
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10541845/
https://www.ncbi.nlm.nih.gov/pubmed/37284857
http://dx.doi.org/10.1007/s00259-023-06285-2
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author Escudero-Castellanos, Alondra
Kurth, Jens
Imlimthan, Surachet
Menéndez, Elena
Pilatis, Eirinaios
Moon, Euy Sung
Läppchen, Tilman
Rathke, Hendrik
Schwarzenböck, Sarah M.
Krause, Bernd J.
Rösch, Frank
Rominger, Axel
Gourni, Eleni
author_facet Escudero-Castellanos, Alondra
Kurth, Jens
Imlimthan, Surachet
Menéndez, Elena
Pilatis, Eirinaios
Moon, Euy Sung
Läppchen, Tilman
Rathke, Hendrik
Schwarzenböck, Sarah M.
Krause, Bernd J.
Rösch, Frank
Rominger, Axel
Gourni, Eleni
author_sort Escudero-Castellanos, Alondra
collection PubMed
description PURPOSE: The present study aims at evaluating the preclinical and the clinical performance of [(68)Ga]Ga-DATA(5m.)SA.FAPi, which has the advantage to be labeled with gallium-68 at room temperature. METHODS: [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).SA.FAPi was conducted on six patients with prostate cancer, aiming on investigating, biodistribution, biokinetics, and determining tumor uptake. RESULTS: [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).SA.FAPi as a diagnostic tool for FAP imaging. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00259-023-06285-2.
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spelling pubmed-105418452023-10-02 Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature Escudero-Castellanos, Alondra Kurth, Jens Imlimthan, Surachet Menéndez, Elena Pilatis, Eirinaios Moon, Euy Sung Läppchen, Tilman Rathke, Hendrik Schwarzenböck, Sarah M. Krause, Bernd J. Rösch, Frank Rominger, Axel Gourni, Eleni Eur J Nucl Med Mol Imaging Original Article PURPOSE: The present study aims at evaluating the preclinical and the clinical performance of [(68)Ga]Ga-DATA(5m.)SA.FAPi, which has the advantage to be labeled with gallium-68 at room temperature. METHODS: [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).SA.FAPi was conducted on six patients with prostate cancer, aiming on investigating, biodistribution, biokinetics, and determining tumor uptake. RESULTS: [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).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 [(68)Ga]Ga-DATA(5m).SA.FAPi as a diagnostic tool for FAP imaging. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s00259-023-06285-2. Springer Berlin Heidelberg 2023-06-07 2023 /pmc/articles/PMC10541845/ /pubmed/37284857 http://dx.doi.org/10.1007/s00259-023-06285-2 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Escudero-Castellanos, Alondra
Kurth, Jens
Imlimthan, Surachet
Menéndez, Elena
Pilatis, Eirinaios
Moon, Euy Sung
Läppchen, Tilman
Rathke, Hendrik
Schwarzenböck, Sarah M.
Krause, Bernd J.
Rösch, Frank
Rominger, Axel
Gourni, Eleni
Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title_full Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title_fullStr Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title_full_unstemmed Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title_short Translational assessment of a DATA-functionalized FAP inhibitor with facile (68)Ga-labeling at room temperature
title_sort translational assessment of a data-functionalized fap inhibitor with facile (68)ga-labeling at room temperature
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10541845/
https://www.ncbi.nlm.nih.gov/pubmed/37284857
http://dx.doi.org/10.1007/s00259-023-06285-2
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