Mechanobiology of Glioblastoma Tumor Microenvironment

Glioblastoma exhibits a highly dynamic tumour microenvironment in which mechanical forces and matrix composition work in concert to regulate cell behaviour. Variations in extracellular matrix stiffness, driven by altered deposition of collagen, hyaluronic acid and other brain‐specific proteins, generate spatial heterogeneity that directs glioblastoma proliferation, invasion and therapeutic resistance. Tumour cells sense these mechanical cues through surface receptors such as integrins and CD44, triggering intracellular mechanotransduction pathways that influence cytoskeletal remodelling, metabolic reprogramming and gene expression. Interstitial fluid flow and perivascular shear forces further contribute to the physical landscape, shaping the maintenance of cancer stem cells and their invasive dissemination along blood vessels and astrocyte‐rich stroma. Advances in three-dimensional biomimetic models and patient‐derived cultures have begun to recapitulate this complexity, unveiling how mechanical properties modulate tumour plasticity and suggesting matrix‐targeted strategies to impede glioblastoma progression.

Research from Nature Portfolio

Recent studies have employed patient‐derived extracellular matrix scaffolds to dissect how organ‐specific matrix composition directs invasive strategies. In one model, decellularised brain tissue matrix supported the formation of heterogeneous cell morphologies and revealed that blocking matrix metalloproteinases or hyaluronan synthase induced a switch between protease‐driven and adhesion‐mediated invasion modes. A bioengineered three‐dimensional brain tissue platform incorporating native brain extracellular matrix components showed that matrix composition dictates subtype‐specific cell phenotypes, metabolic heterogeneity and extracellular lipid droplet formation, thereby offering a tunable system for mechanistic studies. In parallel, co-cultures of glioblastoma spheroids with brain endothelial cells have demonstrated that interleukin-8 released by the perivascular niche enriches cancer stem cell populations, enhancing three-dimensional invasion and intracranial growth in vivo, and that blockade of this chemokine signalling axis can attenuate tumour expansion and infiltration.

Mechanobiology of Glioblastoma Tumor Microenvironment publication trend

The graph below shows the total number of articles in mechanobiology of glioblastoma tumor microenvironment across all publications each year (not limited to Nature Index journals).

Technical terms

Extracellular matrix (ECM): A complex network of proteins and polysaccharides surrounding cells, providing structural support and biochemical signals.

Mechanotransduction: The process by which cells convert mechanical stimuli into biochemical signals, often via adhesion receptors and cytoskeletal elements.

Matrix stiffness: A measure of the rigidity of the ECM, influencing cell morphology, motility and differentiation.

Perivascular niche: The microenvironment surrounding blood vessels, rich in endothelial signals and fluid shear forces that regulate cancer stem cell behaviour.

Cancer stem cell (CSC): A subpopulation of tumour cells with self-renewal capacity and the ability to drive tumour growth and recurrence.

References

1. Microenvironmental stiffness induces metabolic reprogramming in glioblastoma. Cell Reports (2023).
2. The mode and dynamics of glioblastoma cell invasion into a decellularized tissue-derived extracellular matrix-based three-dimensional tumor model. Scientific Reports (2018).
3. 3D extracellular matrix microenvironment in bioengineered tissue models of primary pediatric and adult brain tumors. Nature Communications (2019).
4. Recapitulating in vivo-like plasticity of glioma cell invasion along blood vessels and in astrocyte-rich stroma. Histochemistry and Cell Biology (2017).
5. Influence of Hyaluronic Acid Transitions in Tumor Microenvironment on Glioblastoma Malignancy and Invasive Behavior. Frontiers in Materials (2018).
6. Endothelial cells promote 3D invasion of GBM by IL-8-dependent induction of cancer stem cell properties. Scientific Reports (2019).