Exosome Engineering for Blocking Gut Dysbiosis and Inducing Cell Death Mechanisms in Glioblastoma Multiforme

Mar 14, 2026Cells

Using Engineered Tiny Particles to Stop Gut Imbalance and Trigger Cancer Cell Death in Aggressive Brain Tumors

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Abstract

Exosomes, measuring 30-150 nm, may provide a novel approach to target gut dysbiosis and induce cell death in glioblastoma multiforme (GBM).

Gut dysbiosis is associated with GBM progression through mechanisms involving inflammation and therapeutic resistance.
Exosome engineering strategies could enable the delivery of anti-inflammatory agents and gut microbiome modulators to restore gut-brain axis homeostasis.
Engineered exosomes may transport tumor-suppressive non-coding RNAs and therapeutic agents to induce apoptosis and overcome resistance to temozolomide.
Preclinical studies suggest that targeting both the gut microbiome and tumor cells could enhance overall therapeutic efficacy.
Challenges in clinical translation include issues related to manufacturing, targeting specificity, and quality control.

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Glioblastoma multiforme (GBM) is the most lethal primary brain tumor in adults. Emerging evidence endorses that gut dysbiosis contributes to GBM progression through the gut-brain axis (GBA), promoting inflammation and therapeutic resistance via abnormal short-chain fatty acid production and cytokine dysregulation. Exosomes, naturally occurring nanovesicles (30-150 nm), offer promising therapeutic potential due to their blood-brain barrier permeability, biocompatibility, and versatile cargo capacity. This review examines exosome engineering strategies for dual targeting: inhibiting alterations in gut microbiome and inducing regulated cell death mechanisms such as apoptosis and ferroptosis in GBM. We describe exosome engineering with detailed focus on cargo loading approaches (e.g., genetic modification, electroporation, and sonication), exosome surface functionalization with specific ligands (e.g., antibodies), and exosome biogenesis pathway manipulation. Engineered exosomes can deliver anti-inflammatory agents and gut microbiome modulators to restore GBA homeostasis while simultaneously transporting tumor-suppressive non-coding RNAs (e.g., miRNAs, siRNAs) and therapeutic agents to induce apoptosis by overcoming temozolomide resistance, and trigger ferroptosis-inducing components in GBM stem cells. Preclinical studies make obvious that this dual-targeting approach ought to enhance therapeutic efficacy by creating systemic immunity and eliminating tumor cells. However, clinical translation brings forth challenges, such as manufacturing, targeting specificity, and standardized quality control, and warrants further study.

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Exosome Engineering for Blocking Gut Dysbiosis and Inducing Cell Death Mechanisms in Glioblastoma Multiforme

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