ArticleInternational journal of molecular sciences2025
A Novel Squalenoylated Temozolomide Nanoparticle with Long Circulating Properties Reverses Drug Resistance in Glioblastoma.
Article in International journal of molecular sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Temozolomide (TMZ) remains the frontline chemotherapy for gliomas; yet its clinical efficacy is significantly compromised by inherent instability and the emergence of resistance mechanisms. To surmount these challenges, we engineered a squalenoylated TMZ nanoparticle (SQ-TMZ NPs) via conjugation of TMZ with squalene, enabling enhanced drug stability and improved therapeutic potency against glioblastoma cells. The resulting SQ-TMZ NPs exhibited a precisely controlled nanoscale architecture (~126 nm), demonstrating exceptional stability under physiological and storage conditions, with minimal hemolytic toxicity (<5%). Notably, these nanoparticles conferred superior cytotoxicity in TMZ-resistant glioblastoma T98G cells, attributed to the amplification of intracellular reactive oxygen species (ROS) and DNA damage, along with MGMT (O-6-methylguanine-DNA methyltransferase) expression suppression. Furthermore, in vivo imaging confirmed their efficient blood-brain barrier (BBB) penetration and selective tumor accumulation. This study presents a transformative approach by integrating prodrug self-assembly with targeted drug delivery to not only enhance TMZ stability but also decisively reverse glioblastoma resistance, offering a compelling therapeutic advancement.
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