Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14627/7

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  • Article
    Citation - Scopus: 23
    The Synergistic Effects of Betanin and Radiotherapy in a Prostate Cancer Cell Line: an in Vitro Study
    (Springer Science and Business Media B.V., 2023) Montazersaheb, S.; jafari, S.; Aytemir, M.D.; Ahmadian, E.; Ardalan, M.; Zor, M.; Aghdasi, S.
    Background: Prostate cancer is among the most common cancers in men with an increasing incidence rate. Radiation therapy (RT) is a therapeutic strategy for the management of prostate cancer after surgery; nonetheless, it has different side effects on neighboring healthy cells/tissues. Moreover, radioresistance has been an increasing phenomenon in the recent years. Therefore, there is an urgent need for the introduction of a safe and effective radiosensitizing agent. Accordingly, the recent trend in the development of novel drugs is accompanied by a push toward natural compounds. Our study evaluated the effects of betanin combined with RT as a potential radiosensitizing agent in the PC-3 cell line. Methods and results: MTT assay was utilized to determine the growth inhibitory impact of betanin. The possible synergistic effect was evaluated with CompuSyn software upon Trypan blue exclusion test. Apoptosis-related gene expression was evaluated via Real-time PCR and the protein expression of P21 was determined using western blotting. A synergistic anticancer effect with an optimal combination index of 0.61 was achieved by treating PC-3 cells with betanin and RT. The results pointed out that betanin synergistically triggered RT-mediated apoptosis and cell cycle arrest through modulating gene and protein expression in comparison with each of the monotherapies. Conclusion: These findings shed light on the synergistic antitumor effect of betanin and RT in prostate cancer, indicating the potential use of betanin as a radiosensitizer agent. © 2023, The Author(s), under exclusive licence to Springer Nature B.V.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 3
    A Novel Petox-Based Nanogel Targeting Prostate Cancer Cells for Drug Delivery
    (Wiley-v C H verlag Gmbh, 2024) Gulyuz, Sevgi; Sessevmez, Melike; Ukuser, Gokcen; Khalily, Melek Parlak; Tiryaki, Selen; Sipahioglu, Tarik; Yilmaz, Ozgur
    This study focuses on creating a specialized nanogel for targeted drug delivery in cancer treatment, specifically targeting prostate cancer. This nanogel (referred to as SGK 636/Peptide 563/PEtOx nanogel) is created using hydrophilic poly(2-ethyl-2-oxazoline) (PEtOx) through a combination of living/cationic ring-opening polymerization (CROP) and alkyne-azide cycloaddition (CuAAC) "click" chemical reactions. A fluorescent probe (BODIPY) is also conjugated with the nanogel to monitor drug delivery. The characterizations through 1H-NMR, and FT-IR, SEM, TEM, and DLS confirm the successful production of uniform, and spherical nanogels with controllable sizes (100 to 296 nm) and stability in physiological conditions. The biocompatibility of nanogels is evaluated using MTT cytotoxicity assays, revealing dose-dependent cytotoxicity. Drug-loaded nanogels exhibited significantly higher cytotoxicity against cancer cells in vitro compared to drug-free nanogels. Targeting efficiency is examined using both peptide-conjugated and peptide-free nanogels, with the intracellular uptake of peptide 563-conjugated nanogels by tumor cells being 60-fold higher than that of nanogels without the peptide. The findings suggest that the prepared nanogel holds great potential for various drug delivery applications due to its ease of synthesis, tunable functionality, non-toxicity, and enhanced intracellular uptake in the tumor region. This study emphisizes an innovative PEtOx-based nanogel tailored for targeted drug delivery in prostate cancer. Developed using click chemistry, a valuable technique for chemical synthesis, it exhibits consistent nanogel formation with customizable sizes. In vitro, drug-loaded nanogel exhibits potent cytotoxicity against cancer cells. Notably, peptide-conjugated nanogels significantly boost tumor cell uptake, showcasing promising promising potential for effective cancer drug delivey.image