Browsing by Author "Telci, Dilek"

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Citation - WoS: 18
Citation - Scopus: 20
Design, Synthesis and Anticancer Activity Studies of Novel 4-Butylaminophenyl Hydrazide-Hydrazones as Apoptotic Inducers
(Pergamon-elsevier Science Ltd, 2022) Han, M. Ihsan; Baysal, Ozge Deniz Yesil; Basaran, Guzide Satir; Sezer, Gulay; Telci, Dilek; Kucukguzel, S. Guniz
In this study, a series of the novel Tetracaine derivatives bearing hydrazide-hydrazone moiety were designed, synthesized, and evaluated for anticancer activity. The structures of these compounds were characterized by spectral (H-1-C-13 NMR, FT-IR, and HR-MS analyses) methods. All synthesized compounds (2a-1) were screened for anticancer activity against human hepatocellular carcinoma (HepG2) and lung carcinoma (A549) cell lines. Against HepG2 and A549 cell lines, among the synthesized compounds, 4-(Butylamino)-N'-[(2,4-dichlorophenyl)methylidene]benzohydrazide (2i) demonstrated the most potent anticancer activity with IC50 values 28 and 7 mu M, respectively. Possible cytotoxic effects of compounds (2a-1) on both normal human lung fibroblast (MCR-5) and normal human dermal fibroblast (HDF) cell lines were assessed. Inhibition of anti-apoptotic protein Bax and Bcl-2 was investigated in HepG2 and A549 cells treated with compound 2i using qRT-PCR. Apoptosis was also detected by Annexin V studies. The flow cytometric analysis results showed that compound 2i treatment of HepG2 and A549 cells significantly increased apoptotic cell populations while decreasing viabilities in these carcinomas in a dose-dependent manner after 72 h of incubation. (C) 2022 Elsevier Ltd. All rights reserved.
Post Challenge Effects of Ozg-38.61.3 Gamma Irradiated SARS-CoV Vaccine on Organ Protection in Transgenic Mouse Model
(Marmara University, Institute of Health Sciences, 2025) Telci, Dilek; Akpınar, Gürler; Tuğlu, Mehmet İbrahim; Ovalı, Ercüment; Oztatlıcı, Hulya; Şahin, Fikrettin; Demir, Sevda
Objective: Coronavirus disease 2019 (COVID-19) is an infectious outbreak caused by the severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) and virus-related deaths are increasing day by day. For this reason, vaccine studies and their urgent use are of great importance to prevent the pandemic. In this study, multi-organ damages caused by SARS-CoV-2 virus in human- angiotensin-converting enzyme type 2 (ACE2) transgenic mice and the protective effects of OZG-38.61.3 gamma irradiated SARS-CoV-2 vaccine against viral damage were investigated. Methods: For this purpose, transgenic K18-hACE2 BALB/c mice were randomly allocated into 4 groups, negative control group (NC), positive control group (PC, SARS-CoV-2 infected), and 2 different doses of OZG-38.61.3 vaccine (Challenge 1, dose of 10 13 and Ch2, 10 14 viral particle after SARS-CoV-2 infection). After the administrations, lung, heart and kidney tissues were examined by histopathological, immunohistochemical and TUNEL analysis. Results: Our results showed that the vaccine doses decreased the apoptosis, oxidative stress and inflammation parameters caused by virus in lung, heart, and kidney tissues. It was also found that the vaccine protected the expressions of tight junction proteins in the kidneys. Conclusion: According to our findings, it is suggested that the OZG-38.61.3 can be an effective and protective vaccine that can be safely used against the SARS-CoV-2 virus.
Citation - WoS: 1
Citation - Scopus: 1
Synthesis and Investigation of Cytotoxic Effects of Compounds Derived From Flurbiprofen
(Elsevier, 2023) Gokoglan, Ecem; Dere, Damla; Bedir, Ipek; Yelekci, Kemal; Telci, Dilek; Kucukguzel, S. Guniz
New flurbiprofen derivatives containing 1,2,4-triazoline-5-thione (4) and thioethers (5a-r) were synthesized in this study. The structures of synthesized compounds were characterized by spectral methods (FT-IR, 1H NMR, 13C NMR) and 19F NMR (only compound 5l), besides elemental analysis. In addition, molecular binding of these compounds to the human methionine aminopeptidase 2 enzyme was performed using AutoDock 4.2, the software product of the research, computationally. All synthesized compounds were evaluated for cytotoxic effect against MDA-MB231 triple-negative breast cancer cell line by using WST-1 Cell Viability and Proliferation assay. Doxorubicin is in the anthracycline class and is an antineoplastic agent. It is used to provide regression in common neoplastic conditions such as breast carcinoma. Due to the cardiovascular side effects of doxorubicin, a combination study was conducted with the (& PLUSMN;)(R,S)-3-{1-[2-fluoro-(1,1 & PRIME;-biphenyl)-4-yl]ethyl}-4-methyl-5-{[2(trifluoromethyl)benzyl]thio}-4H-1,2,4-triazole (5l) with promising cytotoxic effects. As a result of the combination, it was shown as 7% MDA-MB231 cell viability. Therefore, based on the evaluations, a better cytotoxic effect was achieved with the 5l combination depending on the low dose of doxorubicin.