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Targeted production of reactive oxygen species in mitochondria to overcome cancer drug resistance.

Authors :
Wang H
Gao Z
Liu X
Agarwal P
Zhao S
Conroy DW
Ji G
Yu J
Jaroniec CP
Liu Z
Lu X
Li X
He X
Source :
Nature communications [Nat Commun] 2018 Feb 08; Vol. 9 (1), pp. 562. Date of Electronic Publication: 2018 Feb 08.
Publication Year :
2018

Abstract

Multidrug resistance is a major challenge to cancer chemotherapy. The multidrug resistance phenotype is associated with the overexpression of the adenosine triphosphate (ATP)-driven transmembrane efflux pumps in cancer cells. Here, we report a lipid membrane-coated silica-carbon (LSC) hybrid nanoparticle that targets mitochondria through pyruvate, to specifically produce reactive oxygen species (ROS) in mitochondria under near-infrared (NIR) laser irradiation. The ROS can oxidize the NADH into NAD <superscript>+</superscript> to reduce the amount of ATP available for the efflux pumps. The treatment with LSC nanoparticles and NIR laser irradiation also reduces the expression and increases the intracellular distribution of the efflux pumps. Consequently, multidrug-resistant cancer cells lose their multidrug resistance capability for at least 5 days, creating a therapeutic window for chemotherapy. Our in vivo data show that the drug-laden LSC nanoparticles in combination with NIR laser treatment can effectively inhibit the growth of multidrug-resistant tumors with no evident systemic toxicity.

Details

Language :
English
ISSN :
2041-1723
Volume :
9
Issue :
1
Database :
MEDLINE
Journal :
Nature communications
Publication Type :
Academic Journal
Accession number :
29422620
Full Text :
https://doi.org/10.1038/s41467-018-02915-8