Metabolism of myeloid cells in brain tumors By Aashna Saxena Defne Bayik July 14, 2026 Frontiers In Immunology Share Summary Takeaways Listen Insight Report Quiz Top Institutions 1 Glioblastoma (GBM) is a highly aggressive brain tumor with a low 5-year survival rate and limited treatment options. 2 Myeloid cells constitute up to 30% of the tumor mass in GBM, indicating their significant role in tumor progression. 3 The GBM tumor microenvironment (TME) induces metabolic reprogramming in myeloid cells, contributing to immunosuppression. 4 Distinct myeloid populations localize to specific tumor niches, reinforcing regional metabolic programs within the TME. 5 The review discusses the implications of immunometabolic reprogramming in GBM heterogeneity and treatment resistance.