Vienna, Austria

ESTRO 2025

Session

Sunday
May 04
15:15 - 16:30
Brahms
Therapy-shaping of the tumour microenvironment: How does the tumour-host immune cells interactions affect radiotherapy outcome?
Michele Mondini, France;
Zuzanna Nowicka, Poland
This session will explore the complex interplay between radiotherapy (RT) and the tumor microenvironment (TME), focusing on stromal-mediated immunosuppression, metabolic rewiring, and immune escape mechanisms. Key topics include the role of cancer-associated fibroblasts (CAFs), tumor associated macrophages (TAMs) and tumor infiltrating lymphocytes (TILs) in promoting radio-sensitivity vs resistance, the impact of RT on the tumor stroma, TME reshaping by low-dose RT (LDRT), and strategies to enhance radio-immunotherapy synergy including by targeting metabolic enzymes. Additionally, speakers will explore the role of hypoxia, particularly in glioblastoma, and of dysregulated purinergic signaling in radiation-induced immune escape.
Symposium
Radiobiology
15:15 - 15:33
Evaluating tumour microenvironment alterations pre- and post- radiation treatment
Fernanda Herrera, Switzerland
E25-4760
15:33 - 15:51
Metabolic barriers to immunogenic radiotherapy response
Erik Wennerberg, United Kingdom
E25-4761
15:51 - 16:09
Dissecting and rewiring myeloid cell heterogeneity in cancer: Understanding therapy-induced changes
Leila Akkari, The Netherlands
E25-4759
16:09 - 16:27
Radiotherapy as a mean to reprogram tumour microenvironment: Can it counteract immunosuppression?
Inigo Martinez-Zubiaurre, Norway
E25-4908