Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance

Tsung-Lin Tsai,1,2 Yu-Hsuan Lai,3,4 Helen HW Chen,1,2,4 Wu-Chou Su1,2 1Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan; 2Department of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan; 3Ins...

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Autores principales:	Tsai TL, Lai YH, Chen HHW, Su WC
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2021
Materias:	fept nanoparticles human copper transporter 1 radiation resistance reactive oxygen species mitochondrial targeting Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/455ba641fa20410fbf98d365164db445
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spelling	oai:doaj.org-article:455ba641fa20410fbf98d365164db4452021-12-02T13:58:32ZOvercoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance1178-2013https://doaj.org/article/455ba641fa20410fbf98d365164db4452021-03-01T00:00:00Zhttps://www.dovepress.com/overcoming-radiation-resistance-by-iron-platinum-metal-alloy-nanoparti-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Tsung-Lin Tsai,1,2 Yu-Hsuan Lai,3,4 Helen HW Chen,1,2,4 Wu-Chou Su1,2 1Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan; 2Department of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan; 3Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan; 4Department of Radiation Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, TaiwanCorrespondence: Wu-Chou Su Rm. 6065, 6F., No. 35, Xiaodong Road, North Dist., Tainan, 704, TaiwanTel +886-6-2353535#3120Fax +886-6-2084112Email sunnysu@mail.ncku.edu.twHelen HW Chen No. 138, Sheng Li Road, North Dist., Tainan, 704, TaiwanTel +886-6-2353535#2461Fax +886-6-2359333Email helen@mail.ncku.edu.twBackground: Radiation therapy remains an important treatment modality in cancer therapy, however, resistance is a major problem for treatment failure. Elevated expression of glutathione is known to associate with radiation resistance. We used glutathione overexpressing small cell lung cancer cell lines, SR3A-13 and SR3A-14, established by transfection with γ-glutamylcysteine synthetase (γ-GCS) cDNA, as a model for investigating strategies of overcoming radiation resistance. These radiation-resistant cells exhibit upregulated human copper transporter 1 (hCtr1), which also transports cisplatin. This study was initiated to investigate the effect and the underlying mechanism of iron-platinum nanoparticles (FePt NPs) on radiation sensitization in cancer cells.Materials and Methods: Uptakes of FePt NPs in these cells were studied by plasma optical emission spectrometry and transmission electron microscopy. Effects of the combination of FePt NPs and ionizing radiation were investigated by colony formation assay and animal experiment. Intracellular reactive oxygen species (ROS) were assessed by using fluorescent probes and imaged by a fluorescence-activated-cell-sorting caliber flow cytometer. Oxygen consumption rate (OCR) in mitochondria after FePt NP and IR treatment was investigated by a Seahorse XF24 cell energy metabolism analyzer.Results: These hCtr1-overexpressing cells exhibited elevated resistance to IR and the resistance could be overcome by FePt NPs via enhanced uptake of FePt NPs. Overexpression of hCtr1 was responsible for the increased uptake/transport of FePt NPs as demonstrated by using hCtr1-transfected parental SR3A (SR3A-hCtr1-WT) cells. Increased ROS and drastic mitochondrial damages with substantial reduction of oxygen consumption rate were observed in FePt NPs and IR-treated cells, indicating that structural and functional insults of mitochondria are the lethal mechanism of FePt NPs. Furthermore, FePt NPs also increased the efficacy of radiotherapy in mice bearing SR3A-hCtr1-WT-xenograft tumors.Conclusion: These results suggest that FePt NPs can potentially be a novel strategy to improve radiotherapeutic efficacy in hCtr1-overexpressing cancer cells via enhanced uptake and mitochondria targeting.Keywords: FePt nanoparticles, human copper transporter 1, radiation resistance, reactive oxygen species, mitochondrial targetingTsai TLLai YHChen HHWSu WCDove Medical Pressarticlefept nanoparticleshuman copper transporter 1radiation resistancereactive oxygen speciesmitochondrial targetingMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 16, Pp 2071-2085 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fept nanoparticles human copper transporter 1 radiation resistance reactive oxygen species mitochondrial targeting Medicine (General) R5-920
spellingShingle	fept nanoparticles human copper transporter 1 radiation resistance reactive oxygen species mitochondrial targeting Medicine (General) R5-920 Tsai TL Lai YH Chen HHW Su WC Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
description	Tsung-Lin Tsai,1,2 Yu-Hsuan Lai,3,4 Helen HW Chen,1,2,4 Wu-Chou Su1,2 1Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan; 2Department of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan; 3Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 701, Taiwan; 4Department of Radiation Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 701, TaiwanCorrespondence: Wu-Chou Su Rm. 6065, 6F., No. 35, Xiaodong Road, North Dist., Tainan, 704, TaiwanTel +886-6-2353535#3120Fax +886-6-2084112Email sunnysu@mail.ncku.edu.twHelen HW Chen No. 138, Sheng Li Road, North Dist., Tainan, 704, TaiwanTel +886-6-2353535#2461Fax +886-6-2359333Email helen@mail.ncku.edu.twBackground: Radiation therapy remains an important treatment modality in cancer therapy, however, resistance is a major problem for treatment failure. Elevated expression of glutathione is known to associate with radiation resistance. We used glutathione overexpressing small cell lung cancer cell lines, SR3A-13 and SR3A-14, established by transfection with γ-glutamylcysteine synthetase (γ-GCS) cDNA, as a model for investigating strategies of overcoming radiation resistance. These radiation-resistant cells exhibit upregulated human copper transporter 1 (hCtr1), which also transports cisplatin. This study was initiated to investigate the effect and the underlying mechanism of iron-platinum nanoparticles (FePt NPs) on radiation sensitization in cancer cells.Materials and Methods: Uptakes of FePt NPs in these cells were studied by plasma optical emission spectrometry and transmission electron microscopy. Effects of the combination of FePt NPs and ionizing radiation were investigated by colony formation assay and animal experiment. Intracellular reactive oxygen species (ROS) were assessed by using fluorescent probes and imaged by a fluorescence-activated-cell-sorting caliber flow cytometer. Oxygen consumption rate (OCR) in mitochondria after FePt NP and IR treatment was investigated by a Seahorse XF24 cell energy metabolism analyzer.Results: These hCtr1-overexpressing cells exhibited elevated resistance to IR and the resistance could be overcome by FePt NPs via enhanced uptake of FePt NPs. Overexpression of hCtr1 was responsible for the increased uptake/transport of FePt NPs as demonstrated by using hCtr1-transfected parental SR3A (SR3A-hCtr1-WT) cells. Increased ROS and drastic mitochondrial damages with substantial reduction of oxygen consumption rate were observed in FePt NPs and IR-treated cells, indicating that structural and functional insults of mitochondria are the lethal mechanism of FePt NPs. Furthermore, FePt NPs also increased the efficacy of radiotherapy in mice bearing SR3A-hCtr1-WT-xenograft tumors.Conclusion: These results suggest that FePt NPs can potentially be a novel strategy to improve radiotherapeutic efficacy in hCtr1-overexpressing cancer cells via enhanced uptake and mitochondria targeting.Keywords: FePt nanoparticles, human copper transporter 1, radiation resistance, reactive oxygen species, mitochondrial targeting
format	article
author	Tsai TL Lai YH Chen HHW Su WC
author_facet	Tsai TL Lai YH Chen HHW Su WC
author_sort	Tsai TL
title	Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
title_short	Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
title_full	Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
title_fullStr	Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
title_full_unstemmed	Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance
title_sort	overcoming radiation resistance by iron-platinum metal alloy nanoparticles in human copper transport 1-overexpressing cancer cells via mitochondrial disturbance
publisher	Dove Medical Press
publishDate	2021
url	https://doaj.org/article/455ba641fa20410fbf98d365164db445
work_keys_str_mv	AT tsaitl overcomingradiationresistancebyironplatinummetalalloynanoparticlesinhumancoppertransport1overexpressingcancercellsviamitochondrialdisturbance AT laiyh overcomingradiationresistancebyironplatinummetalalloynanoparticlesinhumancoppertransport1overexpressingcancercellsviamitochondrialdisturbance AT chenhhw overcomingradiationresistancebyironplatinummetalalloynanoparticlesinhumancoppertransport1overexpressingcancercellsviamitochondrialdisturbance AT suwc overcomingradiationresistancebyironplatinummetalalloynanoparticlesinhumancoppertransport1overexpressingcancercellsviamitochondrialdisturbance
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Overcoming Radiation Resistance by Iron-Platinum Metal Alloy Nanoparticles in Human Copper Transport 1-Overexpressing Cancer Cells via Mitochondrial Disturbance

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