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Verry C, Dufort S, Lemasson B, Grand S, Pietras J, Troprès I, Crémillieux Y, Lux F, Mériaux S, Larrat B, Balosso J, Le Duc G, Barbier EL, Tillement O. Targeting brain metastases with ultrasmall theranostic nanoparticles, a first-in-human trial from an MRI perspective. Sci Adv 2020; 6:eaay5279. [PMID: 32832613 PMCID: PMC7439298 DOI: 10.1126/sciadv.aay5279] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 04/06/2020] [Indexed: 06/01/2023]
Abstract
The use of radiosensitizing nanoparticles with both imaging and therapeutic properties on the same nano-object is regarded as a major and promising approach to improve the effectiveness of radiotherapy. Here, we report the MRI findings of a phase 1 clinical trial with a single intravenous administration of Gd-based AGuIX nanoparticles, conducted in 15 patients with four types of brain metastases (melanoma, lung, colon, and breast). The nanoparticles were found to accumulate and to increase image contrast in all types of brain metastases with MRI enhancements equivalent to that of a clinically used contrast agent. The presence of nanoparticles in metastases was monitored and quantified with MRI and was noticed up to 1 week after their administration. To take advantage of the radiosensitizing property of the nanoparticles, patients underwent radiotherapy sessions following their administration. This protocol has been extended to a multicentric phase 2 clinical trial including 100 patients.
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Affiliation(s)
| | | | - Benjamin Lemasson
- Université Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
| | | | - Johan Pietras
- IRMaGe, CNRS, INSERM, Université Grenoble Alpes, CHU Grenoble Alpes, Grenoble, France
| | - Irène Troprès
- IRMaGe, CNRS, INSERM, Université Grenoble Alpes, CHU Grenoble Alpes, Grenoble, France
| | - Yannick Crémillieux
- Institut des Sciences Moléculaires, CNRS, Université de Bordeaux, Bordeaux, France
| | - François Lux
- Institut Lumière Matière, CNRS, Université de Lyon, Villeurbanne, France
| | | | - Benoit Larrat
- NeuroSpin, CEA, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | | | - Emmanuel L. Barbier
- Université Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, Grenoble, France
| | - Olivier Tillement
- Institut Lumière Matière, CNRS, Université de Lyon, Villeurbanne, France
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