ArticleMaterials today. Bio2026
Chitosan-based nanotheranostics integrated dual-modal imaging and combinatorial tumor therapy for EGFR-TKI resistance reversal.
Article in Materials today. Bio, 2026. 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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7 authors.
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Abstract
Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) are primary treatments for EGFR-mutated non-small cell lung cancer (NSCLC), but acquired resistance limits efficacy. To address this challenge, we developed CsO/IGA, a multifunctional nanoplatform combining osimertinib (AZD9291) with an indocyanine green-gadolinium (ICG-Gd) probe via oleanolic acid (OA)-modified chitosan encapsulation, integrating fluorescence/magnetic resonance imaging (FLI/MRI) with chemo-phototherapy and tumor microenvironment (TME) modulation. CsO/IGA (∼100 nm) demonstrated excellent stability and generated both singlet oxygen and hyperthermia under 808 nm irradiation. The nanoplatform exerted efficient anti-cancer effects to overcome resistance through reactive oxygen species induction, mitochondrial membrane potential reduction, and EGFR/phosphorylated EGFR downregulation in sensitive and resistant NSCLC cells. Notably, the OA component suppressed cancer-associated fibroblasts and α-smooth muscle actin expression, remodeling the TME to enhance tumor penetration.
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