Magnetic Silica-Coated Iron Oxide Nanochains As Photothermal Agents, Disrupting the Extracellular Matrix, and Eradicating Cancer Cells

Overview

Journal Cancers (Basel)

Publisher MDPI

Specialty Oncology

Date 2019 Dec 22

PMID 31861146

Citations 13

Authors

Jelena Kolosnjaj-Tabi

Slavko Kralj

Elena Griseti

Sebastjan Nemec

Claire Wilhelm

Anouchka Plan Sangnier

Elisabeth Bellard

Isabelle Fourquaux

Muriel Golzio

Marie-Pierre Rols

Affiliations

Soon will be listed here.

Abstract

Cancerous cells and the tumor microenvironment are among key elements involved in cancer development, progression, and resistance to treatment. In order to tackle the cells and the extracellular matrix, we herein propose the use of a class of silica-coated iron oxide nanochains, which have superior magnetic responsiveness and can act as efficient photothermal agents. When internalized by different cancer cell lines and normal (non-cancerous) cells, the nanochains are not toxic, as assessed on 2D and 3D cell culture models. Yet, upon irradiation with near infrared light, the nanochains become efficient cytotoxic photothermal agents. Besides, not only do they generate hyperthermia, which effectively eradicates tumor cells in vitro, but they also locally melt the collagen matrix, as we evidence in real-time, using engineered cell sheets with self-secreted extracellular matrix. By simultaneously acting as physical (magnetic and photothermal) effectors and chemical delivery systems, the nanochain-based platforms offer original multimodal possibilities for prospective cancer treatment, affecting both the cells and the extracellular matrix.

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