Silver nanoparticles regulate autophagy through lysosome injury and cell hypoxia in prostate cancer cells.

Abstract:

:With the rapid development of nanotechnology, nanomaterials are now being used for cancer treatment. Although studies on the application of silver nanoparticles in cancer treatment are burgeoning, few studies have investigated the toxicology mechanisms of autophagy in cancer cells under exposure to sublethal silver nanoparticles. Here, we clarified the distinct mechanisms of silver nanoparticles for the regulation of autophagy in prostate cancer PC-3 cells under sublethal exposure. Silver nanoparticle treatment caused lysosome injury, including the decline of lysosomal membrane integrity, decrease of lysosomal quantity, and attenuation of lysosomal protease activity, which resulted in blockage of autophagic flux. In addition, sublethal silver nanoparticle exposure activated AMP-activated protein kinase/mammalian target of rapamycin-dependent signaling pathway to modulate autophagy, which resulted from silver nanoparticles-induced cell hypoxia and energy deficiency. Taken together, the results show that silver nanoparticles could regulate autophagy via lysosome injury and cell hypoxia in PC-3 cells under sublethal dose exposure. This study will provide an experimental basis for the cancer therapy of nanomaterials.

journal_name

J Biochem Mol Toxicol

authors

Chen Y,Yang T,Chen S,Qi S,Zhang Z,Xu Y

doi

10.1002/jbt.22474

subject

Has Abstract

pub_date

2020-05-01 00:00:00

pages

e22474

issue

5

eissn

1095-6670

issn

1099-0461

journal_volume

34

pub_type

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