The glioblastoma spider web: multidimensional crosstalk within the tumor microenvironment and therapeutic implications

Glioblastoma (GBM) exhibits profound therapeutic resistance and aggressive recurrence, driven not solely by tumor-intrinsic mutations, but by a highly integrated, dynamically evolving tumor microenvironment (TME). In this review, we propose the “GBM Spider Web” model to conceptualize the multidimensional and spatiotemporal crosstalk among immune cells, neurons, glial cells, and the extracellular matrix. We systematically deconstruct this ecosystem, highlighting emerging biological paradigms such as neuron-glioma synaptic communication, astrocyte-mediated mitochondrial transfer, and mechanometabolic reprogramming orchestrated by severe hypoxia and lactate accumulation. Crucially, we elucidate how these diverse microenvironmental stressors converge upon a central signaling nexus, primarily integrating the nuclear factor-κB (NF-κB), Wnt/β-catenin, and phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) pathways to drive adaptive evolution, immune evasion, and macroscopic functional syncytium. Furthermore, we comprehensively evaluate next-generation therapeutic strategies designed to disrupt this robust network, ranging from advanced immunotherapies and nanotechnology-based interventions to adaptive physical therapies and the novel targeting of meningeal lymphatic drainage. By shifting the paradigm from isolated tumor-centric pathways to a systemic, network-based perspective, this review provides a strategic framework for overcoming adaptive resistance and guiding the rational design of combinatorial therapies for GBM. An integrated landscape of GBM: From microenvironmental cross-talk to therapeutic intervention. This illustration maps the dynamic ecosystem of GBM across three logical dimensions. (A) TME network. Demonstrates a hierarchical spatial architecture where TMs and gap junctions fuse GBM cells into a macroscopic functional syncytium, facilitating NGS, astrocyte-mediated mitochondrial transfer, and immunosuppressive reprogramming. (B) Signaling pathways. It highlights three interconnected signaling pathways—NF-κB, Wnt, and PI3K—demonstrating how extracellular signals are processed through cytoplasmic relays to drive nuclear transcriptional programs. (C) Emerging treatments. The final sector visualizes diverse therapeutic mechanisms, illustrating how TTFields disrupts mitosis, nanoparticles penetrate the vascular barrier, and MLVs facilitate the clearance of tumor-derived factors. Figure generated using Adobe Illustrator 2022 (version 26.0)