Stratification of radiosensitive brain metastases based on an actionable S100A9/RAGE resistance mechanism.

Whole-brain radiotherapy (WBRT) is the treatment backbone for many patients with brain metastasis; however, its efficacy in preventing disease progression and the associated toxicity have questioned the clinical impact of this approach and emphasized the need for alternative treatments. Given the li...

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Authors: Monteiro, Cátia, Miarka, Lauritz, Perea-García, María, Priego, Neibla, García-Gómez, Pedro, Álvaro-Espinosa, Laura, de Pablos-Aragoneses, Ana, Yebra, Natalia, Retana, Diana, Baena, Patricia, Fustero-Torre, Coral, Graña-Castro, Osvaldo, Troulé, Kevin, Caleiras, Eduardo, Tezanos, Patricia, Muela, Pablo, Cintado, Elisa, Trejo, José Luis, Sepúlveda, Juan Manuel, González-León, Pedro, Jiménez-Roldán, Luis, Moreno, Luis Miguel, Esteban, Olga, Pérez-Núñez, Ángel, Hernández-Laín, Aurelio, Mazarico Gallego, José, Ferrer, Irene, Suárez, Rocío, Garrido-Martín, Eva M, Paz-Ares, Luis, Dalmasso, Celine, Cohen-Jonathan Moyal, Elizabeth, Siegfried, Aurore, Hegarty, Aisling, Keelan, Stephen, Varešlija, Damir, Young, Leonie S, Mohme, Malte, Goy, Yvonne, Wikman, Harriet, Fernández-Alén, Jose, Blasco, Guillermo, Alcázar, Lucía, Cabañuz, Clara, Grivennikov, Sergei I, Ianus, Andrada, Shemesh, Noam, Faria, Claudia C, Lee, Rebecca, Lorigan, Paul, Le Rhun, Emilie, Weller, Michael, Soffietti, Riccardo, Bertero, Luca, Ricardi, Umberto, Bosch-Barrera, Joaquim, Sais, Elia, Teixidor, Eduard, Hernández-Martínez, Alejandro, Calvo, Alfonso, Aristu, Javier, Martin, Santiago M, Gonzalez, Alvaro, Adler, Omer, Erez, Neta, Valiente, Manuel, Hernández-Lain, Aurelio
Format: article
Publication Date:2022
Country:España
Institution:Instituto de Salud Carlos III (ISCIII)
Repository:Repisalud
Language:English
OAI Identifier:oai:repisalud.isciii.es:20.500.12105/25300
Online Access:https://hdl.handle.net/20.500.12105/25300
Access Level:Open access
Keyword:SET ENRICHMENT ANALYSIS
GLYCATION END-PRODUCTS
STEREOTACTIC RADIOSURGERY
RADIATION-THERAPY
MOUSE-BRAIN
CANCER
CELL
RAGE
RADIOTHERAPY
RECEPTOR
Description
Summary:Whole-brain radiotherapy (WBRT) is the treatment backbone for many patients with brain metastasis; however, its efficacy in preventing disease progression and the associated toxicity have questioned the clinical impact of this approach and emphasized the need for alternative treatments. Given the limited therapeutic options available for these patients and the poor understanding of the molecular mechanisms underlying the resistance of metastatic lesions to WBRT, we sought to uncover actionable targets and biomarkers that could help to refine patient selection. Through an unbiased analysis of experimental in vivo models of brain metastasis resistant to WBRT, we identified activation of the S100A9-RAGE-NF-κB-JunB pathway in brain metastases as a potential mediator of resistance in this organ. Targeting this pathway genetically or pharmacologically was sufficient to revert the WBRT resistance and increase therapeutic benefits in vivo at lower doses of radiation. In patients with primary melanoma, lung or breast adenocarcinoma developing brain metastasis, endogenous S100A9 levels in brain lesions correlated with clinical response to WBRT and underscored the potential of S100A9 levels in the blood as a noninvasive biomarker. Collectively, we provide a molecular framework to personalize WBRT and improve its efficacy through combination with a radiosensitizer that balances therapeutic benefit and toxicity.

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