Membrane Biophysics-Based Mechanisms of Cancer Progression: the Active Decoupling / Vanguard Hypothesis

Accumulating evidence indicates that the complex intra and intercellular infrastructure composed of membranous nanostructures—including tunneling nanotubes (TNTs), and extracellular nanoparticles (EPs) — serve as a critical physical determinant of cancer progression, metabolic rewiring, and therapy potential. Further, we hypothesize that the biogenesis and stability of these communication conduits are intrinsically linked with local membrane composition and physical properties. Pathological alterations in lipid and protein shape, and therefrom induced changes in membrane free energy may favour spontaneous membrane budding and subsequent tubule elongation or shedding extracellular vesicles (EVs). Because malignant nanostructures depend on these permissive physical landscapes, we propose that disrupting this physical network represents a viable oncology frontier. Specifically, therapeutic manipulation of the host membrane composition via externally added membrane curvature-modulating compounds, amphiphilic molecules, or membrane-active agents, can alter membrane properties and destabilize and collapse the tumor’s intra and intercellular infrastructure, presenting a novel, mutation-independent strategy to halt cancer invasion.