PMID- 30223109 OWN - NLM STAT- MEDLINE DCOM- 20190111 LR - 20190111 IS - 1872-7077 (Electronic) IS - 1382-6689 (Linking) VI - 63 DP - 2018 Oct TI - Cellular uptake and apoptotic potential of rhenium labeled magnetic protein cages in MDA-MB-231 cells. PG - 127-134 LID - S1382-6689(18)30284-9 [pii] LID - 10.1016/j.etap.2018.08.014 [doi] AB - (188)Re-magnetoferritin nanoparticles (NPs) provide an attractive platform for localized radiation therapy due to their magnetic targeting capability while enhancing contrast in magnetic resonans imaging (MRI) signals. In this study, cellular uptake, in vitro cytotoxicity, apoptotic potential of a non-radioactive isotope of rhenium in the form of (187)Re-magnetoferritin NPs were evaluated in both human normal mammary epithelial and breast metastatic adenocarcinoma cell lines. The results showed that, NP administration into the cells is through receptor mediated endocytosis and cancer cells displayed significantly higher uptake and cytotoxicity compared to normal cells. IC(50) values of nanoparticles were calculated as 0.96 mg/mL for cancer and 1.73 mg/mL for normal cells. Annexin V/ Propidium Iodide (PI) staining also showed that, NPs induced higher apoptotic rates in cancer cells compared to normal cells. Gene expression analyses confirming the results showed that, pro-apoptotic PUMA and BAX genes were significantly up-regulated while anti-apoptotic BCL-2 and SURVIVIN genes were down-regulated in cancer cells compared to normal cells. Overall, these in vitro results suggest that, (187)Re-magnetoferritin NPs have a promising potential for cancer therapy and can be used for imaging and diagnostic purposes for breast cancer at concentrations lower than 0.96 mg/mL. At concentrations above 1 mg/mL, NPs induce apoptosis which can also be used for cancer treatments. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Asik, Elif AU - Asik E AD - Department of Biotechnology, Middle East Technical University, Ankara, 06800, Turkey. FAU - Aslan, Tugba Nur AU - Aslan TN AD - Department of Chemistry, Middle East Technical University, Ankara, 06800, Turkey. FAU - Guray, N Tulin AU - Guray NT AD - Department of Biotechnology, Middle East Technical University, Ankara, 06800, Turkey; Department of Biological Sciences, Middle East Technical University, Ankara, 06800, Turkey. FAU - Volkan, Murvet AU - Volkan M AD - Department of Chemistry, Middle East Technical University, Ankara, 06800, Turkey. Electronic address: murvet@metu.edu.tr. LA - eng PT - Journal Article DEP - 20180825 PL - Netherlands TA - Environ Toxicol Pharmacol JT - Environmental toxicology and pharmacology JID - 9612020 RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (BAX protein, human) RN - 0 (BBC3 protein, human) RN - 0 (BCL2 protein, human) RN - 0 (BIRC5 protein, human) RN - 0 (Magnetite Nanoparticles) RN - 0 (Oxides) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Radioisotopes) RN - 0 (Survivin) RN - 0 (bcl-2-Associated X Protein) RN - 0 (magnetoferritin) RN - 229C124H5I (Rhenium-188) RN - 7440-15-5 (Rhenium) RN - 9013-31-4 (Apoferritins) RN - E1UOL152H7 (Iron) SB - IM MH - Apoferritins/*chemistry MH - Apoptosis Regulatory Proteins/*genetics MH - Breast Neoplasms/drug therapy/*genetics MH - Cell Line, Tumor MH - Cell Survival/drug effects MH - Drug Screening Assays, Antitumor MH - Endocytosis MH - Female MH - Gene Expression Regulation, Neoplastic/drug effects MH - Humans MH - Iron/*chemistry MH - Magnetite Nanoparticles/chemistry MH - Oxides/*chemistry MH - Proto-Oncogene Proteins/genetics MH - Proto-Oncogene Proteins c-bcl-2/genetics MH - Radioisotopes/chemistry/*pharmacology MH - Rhenium/chemistry/*pharmacology MH - Survivin/genetics MH - bcl-2-Associated X Protein/genetics OTO - NOTNLM OT - Apoptosis OT - Breast cancer cell lines OT - Cytotoxicity OT - Magnetoferritin EDAT- 2018/09/18 06:00 MHDA- 2019/01/12 06:00 CRDT- 2018/09/18 06:00 PHST- 2018/06/06 00:00 [received] PHST- 2018/08/20 00:00 [revised] PHST- 2018/08/23 00:00 [accepted] PHST- 2018/09/18 06:00 [pubmed] PHST- 2019/01/12 06:00 [medline] PHST- 2018/09/18 06:00 [entrez] AID - S1382-6689(18)30284-9 [pii] AID - 10.1016/j.etap.2018.08.014 [doi] PST - ppublish SO - Environ Toxicol Pharmacol. 2018 Oct;63:127-134. doi: 10.1016/j.etap.2018.08.014. Epub 2018 Aug 25.