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A novel visible light responsive nanosystem for cancer treatment

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Abstract

A novel singlet-oxygen sensitive drug delivery nanocarrier able to release its cargo after exposure to visible (Vis) light from a common lamp is presented. This nanodevice is based on mesoporous silica nanoparticles (MSN) decorated with porphyrin-caps grafted via reactive oxygen species (ROS)-cleavable linkages. In the presence of Vis light porphyrin-nanocaps produce singlet oxygen molecules that break the sensitive-linker, which triggers pore uncapping and therefore allows the release of the entrapped cargo (topotecan, TOP). This new system takes advantage of the non-toxicity and greater penetration capacity of Vis radiation and a double antitumor effect due to the drug release and the ROS production. In vitro tests with HOS osteosarcoma cancer cells reveal that TOP is able to be released in a controlled fashion inside the tumor cells. This research work constitutes a proof of concept that opens up promising expectations in the search for new alternatives for the treatment of cancer.

Graphical abstract: A novel visible light responsive nanosystem for cancer treatment

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Publication details

The article was received on 12 Jul 2017, accepted on 18 Sep 2017 and first published on 19 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR05050J
Citation: Nanoscale, 2017, Advance Article
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    A novel visible light responsive nanosystem for cancer treatment

    M. Martínez-Carmona, D. Lozano, A. Baeza, M. Colilla and M. Vallet-Regí, Nanoscale, 2017, Advance Article , DOI: 10.1039/C7NR05050J

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