Anti-Epidermal Growth Factor Receptor Aptamer and Antibody Conjugated SPIONs Targeted to Breast Cancer Cells: A Comparative Approach

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dc.contributor.authorTutkun, Lutfiye
dc.contributor.authorGunaydin, Esra
dc.contributor.authorTurk, Mustafa
dc.contributor.authorKutsal, Tulin
dc.date.accessioned2020-06-25T18:23:09Z
dc.date.available2020-06-25T18:23:09Z
dc.date.issued2017
dc.departmentKırıkkale Üniversitesi
dc.description.abstractCancer is still one of the major reasons of illness and death throughout the world. Wide range of cancer types occur in many organs like breast, liver, lung, colon etc. The surface characteristics of these cells change, when normal cells transform into cancerous cells. Then, they display unique expression and/or over expression of certain receptors and antigens. Overexpression of these cells compare to normal cells makes them attractive for targeted therapy. Conjugation of monoclonal antibodies and/or small molecules like aptamers to the magnetic nanoparticles is a beneficial method for cancer diagnosis and treatment in terms of targeted therapy. Nanoparticles have a high surface area to volume ratio. Several types of nanoparticles including quantum dots, magnetic iron oxide, gold and polymer based nanoparticles have been developed for cancer applications in the last few years. In this study, developing of an early diagnosis nanoparticular system in order to detect and image human breast cancer cell line of MDA MB 231 was aimed. In this reason, it has been thought to target cell surface receptors of epidermal growth factor which expressed by breast tumor cells of MDA MB 231. To this end, gold coated magnetic nanoparticles were designed and characterized. Average size of synthesized SPIONs and gold-coated SPIONs which were determined by Transmission Electron Microscopy (TEM) were detected as 5.62 +/- 1.49 nm and 57.04 +/- 8.58 nm, respectively. Fluorescein isothiocyanate (FITC)-labelled aptamer and antibody molecules were immobilized onto gold-coated superparamagnetic iron oxide nanoparticles (SPIONs) and then developed carrier system was applied to MDA MB 231 breast cancer cells in the cell culture medium. The estrogen positive human fibroblast cells were chosen as control cells. Proliferation and differentiation of cells were investigated and cytotoxicity of nanoparticular carrier system was examined. The results indicated that various forms and concentrations of SPION were influenced the cytotoxicity results. Moreover, SPIONs were almost nontoxic to both cell lines without any modifications. Apoptosis and necrosis rates were quantified by double-staining of cells. The different forms of SPION formulations applied to MDA MB 231 breast cancer cells resulted in high incidence of apoptosis rather than necrosis. Additionally, the apoptotic and necrotic effects were found to be concentration dependent. Cancer cell selectivity and cell surface receptor based targeting was imaged by the Fluorescent Microscopy imaging technique and quantified by flow cytometry assay. Real time cell analyser (RTCA) was utilized to determine the dynamic cell proliferation on a periodic time intervals. In conclusion, cancer cell surface receptor based targeting by aptamer and monoclonal antibody conjugated SPIONs was successfully achieved.en_US
dc.description.sponsorshipScientific Research Agency of University of Hacettepe [013 D06 60 001]en_US
dc.description.sponsorshipThis work is partially supported in part by the Scientific Research Agency of University of Hacettepe (013 D06 60 001). The author wish to thank Professor Heinrich Hofmann (EPFL, Ecole Polytechnique Federale De Lausanne) for teaching the synthesis of SPIONs at EPFL.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1166/jnn.2017.12881
dc.identifier.endpage1697en_US
dc.identifier.issn1533-4880
dc.identifier.issn1533-4899
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85009985983
dc.identifier.scopusqualityN/A
dc.identifier.startpage1681en_US
dc.identifier.urihttps://doi.org/10.1166/jnn.2017.12881
dc.identifier.urihttps://hdl.handle.net/20.500.12587/7022
dc.identifier.volume17en_US
dc.identifier.wosWOS:000397126500022
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Scientific Publishersen_US
dc.relation.ispartofJournal Of Nanoscience And Nanotechnology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSPIONen_US
dc.subjectTumor Targetingen_US
dc.subjectCancer Diagnosisen_US
dc.subjectAntibodyen_US
dc.subjectAptameren_US
dc.titleAnti-Epidermal Growth Factor Receptor Aptamer and Antibody Conjugated SPIONs Targeted to Breast Cancer Cells: A Comparative Approachen_US
dc.typeArticle

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