Emerging nanoparticles for glioblastoma: Engineering precision across the blood-brain barrier

Abstract

Glioblastoma (GBM) remains one of the most lethal brain malignancies, characterized by aggressive invasion, therapeutic resistance and poor prognosis. Conventional treatment approaches are limited by systemic toxicity, poor blood–brain barrier (BBB) penetration and lack of tumor specificity. Nanoparticle-based therapeutics offer a transformative paradigm redefining drug delivery, diagnostics and multimodal strategies in GBM. In this review, we critically explore a diverse variety of advanced nanocarrier platforms designed for anti-proliferative, radiosensitizing and immunomodulatory interventions. These systems enhance BBB penetration, tumor localization and enable co-delivery of chemotherapeutics, gene therapies and imaging agents with high precision. Innovative approaches show efficacy against glioma stem cells, modulate the tumor microenvironment and address resistance mechanisms. Integration with radiotherapy and immunotherapy yields synergistic tumor suppression and immune activation, advancing personalized nanomedicine. Despite these advancements, translational hurdles remain nanogenotoxicity, long-term biosafety, immune responses and regulatory barriers. This review emphasizes such challenges while identifying opportunities for strategic innovation in GBM nanotherapy. By uniquely bridging preclinical advances with emerging clinical perspectives, we highlight its distinct contribution within the field. By bridging nanotechnology, molecular oncology and bioengineering, we highlight how rational nanoparticle design can shift GBM management toward targeted, multimodal precision therapy, offering renewed hope against one of oncology’s most intractable diseases. Keywords: Glioblastoma, Nanoparticles, Blood-Brain Barrier, Nanotechnology, Nanomedicine, Nanotherapeutics.