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Polydopamine/Transferrin Hybrid Nanoparticles for Targeted Cell-Killing.


ABSTRACT: Polydopamine can form biocompatible particles that convert light into heat. Recently, a protocol has been optimized to synthesize polydopamine/protein hybrid nanoparticles that retain the biological function of proteins, and combine it with the stimuli-induced heat generation of polydopamine. We have utilized this novel system to form polydopamine particles, containing transferrin (PDA/Tf). Mouse melanoma cells, which strongly express the transferrin receptor, were exposed to PDA/Tf nanoparticles (NPs) and, subsequently, were irradiated with a UV laser. The cell death rate was monitored in real-time. When irradiated, the melanoma cells exposed to PDA/Tf NPs underwent apoptosis, faster than the control cells, pointing towards the ability of PDA/Tf to mediate UV-light-induced cell death. The system was also validated in an organotypic, 3D-printed tumor spheroid model, comprising mouse melanoma cells, and the exposure and subsequent irradiation with UV-light, yielded similar results to the 2D cell culture. The process of apoptosis was found to be targeted and mediated by the lysosomal membrane permeabilization. Therefore, the herein presented polydopamine/protein NPs constitute a versatile and stable system for cancer cell-targeting and photothermal apoptosis induction.

SUBMITTER: Hauser D 

PROVIDER: S-EPMC6315732 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature

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Polydopamine/Transferrin Hybrid Nanoparticles for Targeted Cell-Killing.

Hauser Daniel D   Estermann Manuela M   Milosevic Ana A   Steinmetz Lukas L   Vanhecke Dimitri D   Septiadi Dedy D   Drasler Barbara B   Petri-Fink Alke A   Ball Vincent V   Rothen-Rutishauser Barbara B  

Nanomaterials (Basel, Switzerland) 20181217 12


Polydopamine can form biocompatible particles that convert light into heat. Recently, a protocol has been optimized to synthesize polydopamine/protein hybrid nanoparticles that retain the biological function of proteins, and combine it with the stimuli-induced heat generation of polydopamine. We have utilized this novel system to form polydopamine particles, containing transferrin (PDA/Tf). Mouse melanoma cells, which strongly express the transferrin receptor, were exposed to PDA/Tf nanoparticle  ...[more]

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