Role of oxidative and nitro-oxidative damage in silver nanoparticles cytotoxic effect against human pancreatic ductal adenocarcinoma cells

Ewelina Barcińska , Justyna Wierzbicka , Agata Zauszkiewicz-Pawlak , Dagmara Jacewicz , Aleksandra Dąbrowska , Iwona Inkielewicz-Stepniak

Abstract

Pancreatic ductal adenocarcinoma is one of the most aggressive human malignancies, where the 5-year survival rate is less than 4% worldwide. Successful treatment of pancreatic cancer is a challenge for today’s oncology. Several studies showed that increased levels of oxidative stress may cause cancer cells damage and death. Therefore, we hypothesized that oxidative as well as nitro-oxidative stress is one of the mechanisms inducing pancreatic cancer programmed cell death. We decided to use silver nanoparticles (AgNPs) (2.6 and 18 nm) as a key factor triggering the reactive oxygen species (ROS) and reactive nitrogen species (RNS) in pancreatic ductal adenocarcinoma cells (PANC-1). Previously, we have found that AgNPs induced PANC-1 cells death. Furthermore, it is known that AgNPs may induce an accumulation of ROS and alteration of antioxidant systems in different type of tumors, and they are indicated as promising agents for cancer therapy. Then, the aim of our study was to evaluate the implication of oxidative and nitro-oxidative stress in this cytotoxic effect of AgNPs against PANC-1 cells. We determined AgNP-induced increase of ROS level in PANC-1 cells and pancreatic noncancer cell (hTERT-HPNE) for comparison purposes. We found that the increase was lower in noncancer cells. Reduction of mitochondrial membrane potential and changes in the cell cycle were also observed. Additionally, we determined the increase in RNS level: nitric oxide (NO) and nitric dioxide (NO2) in PANC-1 cells, together with increase in family of nitric oxide synthases (iNOS, eNOS, and nNOS) at protein and mRNA level. Disturbance of antioxidant enzymes: superoxide dismutase (SOD1, SOD2, and SOD3), glutathione peroxidase (GPX-4) and catalase (CAT) were proved at protein and mRNA level. Moreover, we showed cells ultrastructural changes, characteristic for oxidative damage. Summarizing, oxidative and nitro-oxidative stress and mitochondrial disruption are implicated in AgNPs-mediated death in human pancreatic ductal adenocarcinoma cells.
Author Ewelina Barcińska
Ewelina Barcińska,,
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, Justyna Wierzbicka
Justyna Wierzbicka,,
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, Agata Zauszkiewicz-Pawlak
Agata Zauszkiewicz-Pawlak,,
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, Dagmara Jacewicz (FCh / DGICh / LPCC)
Dagmara Jacewicz,,
- Laboratory of Physicochemistry of Coordination Complexes
, Aleksandra Dąbrowska (FCh / DGICh / LII)
Aleksandra Dąbrowska,,
- Laboratory of Intermolecular Interactions
, Iwona Inkielewicz-Stepniak
Iwona Inkielewicz-Stepniak,,
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Journal seriesOxidative Medicine and Cellular Longevity, ISSN 1942-0900, (A 30 pkt)
Issue year2018
Vol2018
Pages1-15
Publication size in sheets0.7
Keywords in Englishoxidative and nitro-oxidative damage, pancreatic ductal adenocarcinoma cells, nitric oxide, nitric dioxide
DOIDOI:10.1155/2018/8251961
URL http://downloads.hindawi.com/journals/omcl/2018/8251961.pdf
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)30
ScoreMinisterial score = 30.0, 10-09-2018, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 10-09-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 4.593 (2) - 2016=4.879 (5)
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