Alginate hydrogel co-loaded with cisplatin and gold nanoparticles for computed tomography image-guided chemotherapy
The biomedical applications of gold nanoparticles (AuNPs) have experienced rapid growth in recent years, due to their expected benefits in medical imaging and therapy. In this work, we report the development of a theranostic nanocomplex constructed from alginate hydrogel co-loaded with cisplatin and AuNPs (abbreviated as ACA) for simultaneous drug delivery and computed tomography imaging. CT26 cells derived from mouse colon adenocarcinoma were exposed to various concentrations of ACA nanocomplex (for 24 h) and the cytotoxicity was measured using MTT assay. Moreover, the cells treated with ACA nanocomplex were imaged in a computed tomography scanner and the contrast enhancement due to the presence of nanocomplex was assessed. The cytotoxicity results showed that ACA nanocomplex had a more potent chemotherapy efficacy than free cisplatin, so that ACA nanocomplex at the concentration of 5 µg/ml (per cisplatin) and 20 µg/ml of free cisplatin resulted in the same cytotoxicity (survival rate: 66%). The computed tomography imaging study revealed that ACA nanocomplex increased the brightness of computed tomography images, the computed tomography number value, and contrast-to-noise ratio (CNR). ACA nanocomplex can be presented as a computed tomography-traceable nanocarrier that allows to monitor the delivery of therapeutics by assessing their localized accumulation and in vivo biodistribution.
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Elsevier
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Walter de Gruyter
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- We do not take into account publications without a DOI.
- Statistics recalculated weekly.