1. Assessment of hypoxia and oxidative-related changes in a lung-derived brain metastasis model by [64Cu][Cu(ATSM)] PET and proteomic studies
- Author
-
Jade Fantin, Jérôme Toutain, Elodie A. Pérès, Benoit Bernay, Sarina Maya Mehani, Charly Helaine, Mickael Bourgeois, Carole Brunaud, Laurent Chazalviel, Julien Pontin, Aurélien Corroyer-Dulmont, Samuel Valable, Michel Cherel, and Myriam Bernaudin
- Subjects
Brain metastasis ,Lung cancer ,Hypoxia ,HIF ,Oxidative stress ,Cu-ATSM ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Abstract Background Brain metastases (BM) are the most frequent malignant brain tumors. The aim of this study was to characterize the tumor microenvironment (TME) of BM and particularly hypoxia and redox state, known to play a role in tumor growth and treatment resistance with multimodal PET and MRI imaging, immunohistochemical and proteomic approaches in a human lung cancer (H2030-BrM3)-derived BM model in rats. Results First, in vitro studies confirmed that H2030-BrM3 cells respond to hypoxia with increasing expression of HIF-1, HIF-2 and their target genes. Proteomic analyses revealed, among expression changes, proteins associated with metabolism, oxidative stress, metal response and hypoxia signaling in particular in cortical BM. [64Cu][Cu(ATSM)] PET revealed a significant uptake by cortical BM (p
- Published
- 2023
- Full Text
- View/download PDF