Volume 35, Issue 12 e6435
RESEARCH ARTICLE

Synthesis and morphological studies of Tc-99m-labeled lupulone-conjugated Fe3O4@TiO2 nanocomposite, and in vitro cytotoxicity activity on prostate cancer cell lines

Elif Tutun

Elif Tutun

Department of Nuclear Applications, Institute of Nuclear Sciences, Ege University, Izmir, Turkey

Contribution: ​Investigation (equal), Methodology (equal)

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Volkan Tekin

Volkan Tekin

Department of Nuclear Applications, Institute of Nuclear Sciences, Ege University, Izmir, Turkey

Contribution: Methodology (equal), Visualization (equal)

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Volkan Yasakcı

Volkan Yasakcı

Department of Nuclear Applications, Institute of Nuclear Sciences, Ege University, Izmir, Turkey

Contribution: Methodology (equal)

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Ömer Aras

Ömer Aras

Memorial Sloan Kettering Cancer Center, New York, New York, USA

Contribution: Methodology (equal), Validation (equal), Visualization (equal)

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Perihan Ünak

Corresponding Author

Perihan Ünak

Department of Nuclear Applications, Institute of Nuclear Sciences, Ege University, Izmir, Turkey

Correspondence

Perihan Ünak, Department of Nuclear Applications, Institute of Nuclear Sciences, Ege University, 35100 Bornova, Izmir, Turkey.

Email: [email protected]

Contribution: Conceptualization (lead), Data curation (lead), ​Investigation (lead), Methodology (lead), Project administration (equal), Resources (equal), Supervision (equal)

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First published: 02 September 2021
Citations: 3

Funding information: National Cancer Institute, Grant/Award Number: P30 CA008748

Abstract

The purpose of this study was to develop a multifunctional theranostic probe for imaging (magnetic resonance imaging [MRI] and single-photon emission computed tomography [SPECT]) and therapy (photodynamic therapy). For this purpose, Tc-99m-labeled lupulone-conjugated Fe3O4@TiO2 nanocomposites (99mTc-DTPA-Fe3O4@TiO2-HLP and 99mTc-DTPA-Fe3O4@TiO2-ALP nanocomposites) were synthesized. The average diameter of the nanocomposites was 171 ± 20 nm as seen on transmission electron microscopy images. Fe3O4@TiO2 nanocomposites exhibited fluorescence spectra at an emission wavelength of 314 nm. Lupulone-conjugated Fe3O4@TiO2 nanocomposites were spherical-shaped with a suitable dispersion and without visible aggregation, and their radiolabeling yields were over 85%. Healthy (RWPE-1 normal human prostate epithelial cell line) and cancer prostate cell lines (PC-3 human prostate cancer cell line) were used to determine the in vitro biological behavior of the nanocomposites. The PC-3 cells treated with lupulone-conjugated Fe3O4@TiO2 nanocomposites showed a lower cell viability compared with RWPE-1 cells treated with lupulone-conjugated Fe3O4@TiO2 nanocomposites. Lupulone-modified Fe3O4@TiO2 nanocomposites may serve in the future as a multifunctional probe for positron emission tomography (PET)/MRI, photodynamic therapy, and hyperthermia therapy of cancer.

DATA AVAILABILITY STATEMENT

Data are available on request from the authors.

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