Graduate Theses & Dissertations

Evaluation of silver nanoparticles (AgNPs) and anti-GD2-AgNP antibody-drug conjugates as novel neuroblastoma therapies
Neuroblastoma (NB) has one of the highest mortality rates in pediatric oncology due to relapsed and refractory disease. Current aggressive multi-modal treatments are inhibited by dose-limiting toxicities and are associated with late-effects and secondary malignancies, emphasizing the necessity for novel therapeutics. Uniquely, most NB cells highly express disialoganglioside (GD2) a cell surface glycolipid that can provide a target for tumour-specific delivery. This study demonstrates a comprehensive evaluation of silver nanoparticles (AgNPs) and the first preliminary evaluation of anti-GD2-AgNP antibody-drug conjugates (ADCs) against NB in vitro. This present study validates the potential for AgNPs as an anti-cancer agent against NB as AgNPs demonstrated preferential toxicity towards NB cells through metabolic inhibition and indicative morphological alterations, while a less tumorigenic cell line demonstrated resistance to AgNP treatment. Therefore, this work identified an AgNP cell-type-dependent cytotoxicity effect. Low conjugation efficiency of the anti-GD2 monoclonal antibody, 14.G2a, to NHS-activated AgNPs failed to exert greater toxicity than the AgNPs alone. Collectively, this thesis provides novel information regarding the anti-cancer effects of AgNPs against NB with recommendations for anti-GD2-AgNP ADCs. Author Keywords: ADC, Chemotherapy, GD2, Neuroblastoma, Silver nanoparticles

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