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Issue 35, 2018
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Ultrafast synthesis of ultrasmall polyethylenimine-protected AgBiS2 nanodots by “rookie method” for in vivo dual-modal CT/PA imaging and simultaneous photothermal therapy

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Abstract

Developing a biocompatible nanotheranostic platform integrating diagnostic and therapeutic functions is a great prospect for cancer treatment. However, it is still a great challenge to synthesize nanotheranostic agents using an ultra-facile method. In the research reported here, ultrasmall polyethylenimine-protected silver bismuth sulfide (PEI-AgBiS2) nanodots were successfully synthesized using an ultra-facile and environmentally friendly strategy (1 min only at room temperature), which could be described as a “rookie method”. PEI-AgBiS2 nanodots show good monodispersity and biocompatibility. For the first time, PEI-AgBiS2 nanodots were reported as a powerful and safe nanotheranostic agent for cancer treatment. PEI-AgBiS2 nanodots exhibit excellent computed tomography (CT) and photoacoustic (PA) dual-modal imaging ability, which could effectively guide photothermal cancer therapy. Furthermore, PEI-AgBiS2 nanodots exhibit a high photothermal conversion efficiency (η = 35.2%). The photothermal therapy (PTT) results demonstrated a highly efficient tumor ablation ability. More importantly, the blood biochemistry and histology analyses verify that the PEI-AgBiS2 nanodots have negligible long-term toxicity. This work highlights that PEI-AgBiS2 nanodots produced using this extremely effective method are a high-performance and safe PTT agent. These findings open a new gateway for synthesizing nanotheranostic agents by using this ultra-facile method in the future.

Graphical abstract: Ultrafast synthesis of ultrasmall polyethylenimine-protected AgBiS2 nanodots by “rookie method” for in vivo dual-modal CT/PA imaging and simultaneous photothermal therapy

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Publication details

The article was received on 15 Jun 2018, accepted on 13 Aug 2018 and first published on 18 Aug 2018


Article type: Paper
DOI: 10.1039/C8NR04870C
Citation: Nanoscale, 2018,10, 16765-16774
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    Ultrafast synthesis of ultrasmall polyethylenimine-protected AgBiS2 nanodots by “rookie method” for in vivo dual-modal CT/PA imaging and simultaneous photothermal therapy

    P. Lei, R. An, X. Zheng, P. Zhang, K. Du, M. Zhang, L. Dong, X. Gao, J. Feng and H. Zhang, Nanoscale, 2018, 10, 16765
    DOI: 10.1039/C8NR04870C

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