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Eryilmaz IE, Egeli U, Cecener G. Association between the apoptotic effect of Cabazitaxel and its pro-oxidant efficacy on the redox adaptation mechanisms in prostate cancer cells with different resistance phenotypes. Cancer Biol Ther 2024; 25:2329368. [PMID: 38485703 PMCID: PMC10950270 DOI: 10.1080/15384047.2024.2329368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/07/2024] [Indexed: 03/19/2024] Open
Abstract
Redox adaptation causes poor prognosis by adapting cancer cells to excessive oxidative stress. Previously, we introduced an oxidative stress-resistant metastatic prostate cancer (mPC) model (LNCaP-HPR) that redox adaptation reduced the effect of Cabazitaxel (Cab), the last taxane-derivative for metastatic castration-resistant PC (mCRPC). Whereas, we investigated for the first time whether there is an association between the altered apoptotic effect and pro-oxidant efficacy of Cab on the redox adaptation in PC cells with different phenotypes, including LNCaP mPC, LNCaP-HPR, C4-2 mCRPC, and RWPE-1 cells. Cab was shown pro-oxidant efficacy proportionally with the apoptotic effect, more prominent in the less aggressive LNCaP cells, by increasing the endogenous ROS, mitochondrial damage, and inhibiting nuclear ROS scavengers, p-Nrf2 and HIF-1α. However, the pro-oxidant and apoptotic effect was lower in the LNCaP-HPR and C4-2 cells, indicating that the drug sensitivity of the cells adapted to survive with more ROS was reduced via altered regulation of redox adaptation. Additionally, unlike LNCaP, Cab caused an increase in the p-NF-κB activation, suggesting that the p-NF-κB might accompany maintaining survival with the increased ROS in the aggressive PC cells. Moreover, the cytotoxic and apoptotic effects of Cab were less on RWPE-1 cells compared to LNCaP but were closer to those on the more aggressive LNCaP-HPR and C4-2 cells, except for the changing pro-oxidant effect of Cab. Consequently, this study indicates the variable pro-oxidant effects of Cab on redox-sensitive proteins, which could be a target for improving Cab's apoptotic effect more in aggressive PC cells.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- Faculty of Medicine, Medical Biology Department, Bursa Uludag University, Bursa, Turkey
| | - Unal Egeli
- Faculty of Medicine, Medical Biology Department, Bursa Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Faculty of Medicine, Medical Biology Department, Bursa Uludag University, Bursa, Turkey
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Eryilmaz IE, Vuruskan BA, Kaygisiz O, Cecener G, Egeli U, Vuruskan H. The Mutational and Transcriptional Landscapes of Speckle-Type POZ Protein (SPOP) and Androgen Receptor (AR) in a Single-Center pT3 Prostatectomy Cohort. J Environ Pathol Toxicol Oncol 2024; 43:15-29. [PMID: 37824367 DOI: 10.1615/jenvironpatholtoxicoloncol.2023048095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023] Open
Abstract
Prostate cancer (PCa) is a heterogeneous disease both clinically and genetically. According to The Cancer Genome Atlas (TCGA), the speckle‑type POZ protein (SPOP) mutant form is one of the significant core subtypes of PCa. However, the prognostic value of SPOP variations remains unknown. As a critical PCa driver and an SPOP-targeted protein, androgen receptor (AR) also plays a role in PCa initiation and progression. Thus, we aimed to analyze the mutational status of SPOP and AR with their transcriptional levels in a pathological stage 3 (pT3) prostatectomy cohort consisting of 89 Turkish PCa patients. Targeted sequence analysis and RT-qPCR were performed for SPOP and AR in the benign and malign prostate tissue samples. Our results introduced the two novel pathogenic SPOP variations, C203Y and S236R, in the BTB/POZ domain and a novel pathogenic variant in the ligand-binding domain of AR, R789W. Their predicted pathogenicities and effects on protein features were evaluated by web-based in silico analysis. The overall frequency of SPOP and AR variations for pT3 patients in our population was 3.4% (3/89) and 4.5% (4/89), respectively. The mutational results represented a possible subgroup characterized by carrying the novel variants in SPOP and AR in pT3 PCa patients. In addition to the significant clinicopathological parameters, the mutational results provide a better understanding of the molecular structure of pathologically advanced PCa in the SPOP and AR aspects.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Gorukle, Bursa, Turkey
| | - Berna Aytac Vuruskan
- Bursa Uludag University, Faculty of Medicine, Medical Pathology Department, Gorukle, Bursa, Turkey
| | - Onur Kaygisiz
- Bursa Uludag University, Faculty of Medicine, Urology Department, Gorukle, Bursa, Turkey
| | - Gulsah Cecener
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Gorukle, Bursa, Turkey
| | - Unal Egeli
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Gorukle, Bursa, Turkey
| | - Hakan Vuruskan
- Ceylan International Hospital, Urology Department, Bursa, Turkey
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Eryilmaz IE, Egeli U, Cecener G. An in vitro redox adaptation model for metastatic prostate cancer: Establishing, characterizing, and Cabazitaxel response evaluating. Clin Exp Pharmacol Physiol 2022; 49:1094-1104. [PMID: 35751096 DOI: 10.1111/1440-1681.13694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/09/2022] [Accepted: 06/15/2022] [Indexed: 11/29/2022]
Abstract
Little is known about the redox-adapted cancer cells for understanding their pharmacologically targetable features and chemotherapeutic responses. Thus, we presented the first in vitro redox adaptation model for metastatic prostate cancer (mPC), LNCaP-HPR, with enhanced oxidative stress resistance accompanying poor Cabazitaxel response. After establishing, the cells were characterized by comparing the viability, death, oxidative stress, total GSH levels, and the mRNA and protein levels of the redox-sensitive transcription factors responsible for the adaptation, Nrf-2, NF-κB, and HIF-1α. Then, the apoptotic effect of Cabazitaxel was evaluated in LNCaP mPC, LNCaP-HPR, and C4-2 metastatic castration-resistant (mCRPC) cells. In response to H2 O2 , viability, oxidative stress, and the total GSH levels of LNCaP-HPR cells have confirmed the oxidative stress resistance. Nrf-2, NF-κB, and HIF-1α were upregulated in LNCaP-HPR cells, not in LNCaP, confirming that resistant cells were much less affected by exogenous oxidative stress. Unlike LNCaP, LNCaP-HPR cells were less sensitive to Cabazitaxel, as closer to the response of C4-2 mCRPC cells, indicating that redox adaptation decreased Cabazitaxel response. This is the first evaluated association between redox adaptation and poor Cabazitaxel response, suggesting that in vitro Cabazitaxel efficiency is affected by PC cells' endogenous oxidative stress tolerance. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Unal Egeli
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Gulsah Cecener
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
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Colak DK, Egeli U, Eryilmaz IE, Aybastier O, Malyer H, Cecener G, Tunca B. The Anticancer Effect of Inula viscosa Methanol Extract by miRNAs' Re-regulation: An in vitro Study on Human Malignant Melanoma Cells. Nutr Cancer 2021; 74:211-224. [PMID: 33570434 DOI: 10.1080/01635581.2020.1869791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Alternative and natural therapies are needed for malignant melanoma (MM), the most deadly skin cancer type due to chemotherapy's limited effect. In the present study, we evaluated the anticancer potentials of Inula viscosa methanol and water extracts (IVM and IVW) on MM cells, A2058 and MeWo, and normal fibroblasts. After the chromatographic and antioxidant activity analysis, their antiproliferative effects were determined with the increasing doses for 24-72 h. IVM induced more cell death in a dose and time-dependent manner in MM cells compared to IVW. This effect was probably due to the higher amount of phenolics in it. IVM significantly induced more apoptotic death in MM cells than fibroblasts (p < 0.01), which was also supported morphologically. IVM also caused cell cycle arrest at G0/G1 and G2/M phases in A2058 and MeWo, respectively, and suppressed the migration ability of MM cells (p < 0.01). Additionally, IVM was found to have significant potential in regulating MM-related miRNAs, upregulating miR-579 and miR-524, and downregulating miR-191 and miR-193, in MM cells (p < 0.05, p < 0.01). As a result, the anticancer effect of IVM via regulating miRNAs' expression has been demonstrated for the first time. Thus, IVM, with these potentials, may be a promising candidate for MM treatment.
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Affiliation(s)
| | - Unal Egeli
- Medical Biology Department, Bursa Uludag University, Bursa, Turkey
| | | | - Onder Aybastier
- Analytical Chemistry Department, Bursa Uludag University, Bursa, Turkey
| | - Hulusi Malyer
- Biology Department, Bursa Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Medical Biology Department, Bursa Uludag University, Bursa, Turkey
| | - Berrin Tunca
- Medical Biology Department, Bursa Uludag University, Bursa, Turkey
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Guney Eskiler G, Ozkan AD, Eryilmaz IE, Egeli U, Cecener G. Association between the anticancer efficacy of cabazitaxel and toll-like receptor 4 mediating signaling pathways in metastatic castration-resistant prostate cancer cells. Hum Exp Toxicol 2021; 40:1122-1129. [PMID: 33380212 DOI: 10.1177/0960327120984209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND We evaluated the effect of cabazitaxel (CAB) as a third-line taxane on Toll-like receptor 4 (TLR4)-mediated signaling pathways, especially NF-κB activity, in metastatic castration-resistant prostate cancer (mCRPC) cells. METHODS CAB cytotoxicity was determined by WST-1 assay. To assess the relationship between CAB efficacy and TLR4 signaling pathways, RT-PCR, western blot and immunofluorescence analysis were performed. Additionally, CAB-mediated apoptotic cell death was assessed by Annexin V and RT-PCR analysis. RESULTS Our results demonstrated that CAB exerted considerably cytotoxic and apoptotic effects on PC-3 mCRPC cells (p < 0.05). CAB treatment altered TLR4 expression level in a dose-dependent manner. Furthermore, 1 nM CAB treatment significantly induced NF-κB activity through p65 nuclear localization and increased the expression level of caspase-3, Bax and p53. Interestingly, total apoptotic cell death and IRF3 protein levels were increased at 5 nM concentration of CAB despite a decrease in the levels of both NF-κB and pro-apoptotic genes. CONCLUSIONS Therefore, NF-κB activity may be a potential target for the efficacy of CAB in mCRPC cells.
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Affiliation(s)
- Gamze Guney Eskiler
- Department of Medical Biology, Faculty of Medicine, 175678Sakarya University, Sakarya, Turkey
| | - Asuman Deveci Ozkan
- Department of Medical Biology, Faculty of Medicine, 175678Sakarya University, Sakarya, Turkey
| | - Isil Ezgi Eryilmaz
- Department of Medical Biology, Faculty of Medicine, 64048Uludag University, Bursa, Turkey
| | - Unal Egeli
- Department of Medical Biology, Faculty of Medicine, 64048Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Department of Medical Biology, Faculty of Medicine, 64048Uludag University, Bursa, Turkey
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Eryilmaz IE, Erer S, Zarifoglu M, Egeli U, Karakus E, Yurdacan B, Cecener G, Tunca B, Colakoglu B, Bora Tokcaer A, Saka E, Demirkiran M, Akbostanci C, Dogu O, Kaleagasi H, Kenangil G, Cakmur R, Elibol B. Contribution of functional dopamine D2 and D3 receptor variants to motor and non-motor symptoms of early onset Parkinson's disease. Clin Neurol Neurosurg 2020; 199:106257. [PMID: 33039854 DOI: 10.1016/j.clineuro.2020.106257] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/12/2020] [Accepted: 09/28/2020] [Indexed: 01/29/2023]
Abstract
In the present study, we focused on investigating the contribution of functional dopamine D2 and D3 receptor variants to motor and/or non-motor symptoms of early onset Parkinson's disease (EOPD). Three functional single nucleotide polymorphisms (SNPs), DRD3 rs6280, DRD2 rs2283265 and DRD2 rs1076560, were genotyped in 128 Turkish EOPD patients and then, statistical analysis was conducted for the potential impacts of SNPs on clinical parameters. All three SNPs were found to be statistically significant in terms of PD-related pain: DRD3 [rs6280; risk allele "T" for pain; p = 0.031; odds ratio (OR)=4.25], DRD2 [rs2283265; risk allele "A" for pain; p = 0.001; OR=8.47] and, DRD2 [rs1076560; risk allele "A" for pain; p = 0.022; OR=4.58]. Additionally, bilateral disease [p = 0.011; OR=5.10] and gender [risk group "female"; p = 0.003; OR=8.53] were also identified as significant univariate risk factors for PD-related pain. Based on logistic regression analysis conducted with the significant univariate risk factors, this the first report to clarify that a female patient with bilateral PD and DRD2 rs2283265 polymorphism has a significant risk for PD-related pain. Our findings might contribute to improve life quality by offering treatment options for pain in PD patients with these clinical and genetic features.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Sevda Erer
- Bursa Uludag University, Faculty of Medicine, Neurology Department, Bursa, Turkey.
| | - Mehmet Zarifoglu
- Bursa Uludag University, Faculty of Medicine, Neurology Department, Bursa, Turkey
| | - Unal Egeli
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Ece Karakus
- Bursa Uludag University, Faculty of Medicine, Bursa, Turkey
| | - Beste Yurdacan
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Gulsah Cecener
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Berrin Tunca
- Bursa Uludag University, Faculty of Medicine, Medical Biology Department, Bursa, Turkey
| | - Beril Colakoglu
- Dokuz Eylul University, Faculty of Medicine, Neurology Department, Izmir, Turkey
| | - Ayse Bora Tokcaer
- Gazi University, Faculty of Medicine, Neurology Department, Ankara, Turkey
| | - Esen Saka
- Hacettepe University, Faculty of Medicine, Neurology Department, Ankara, Turkey
| | - Meltem Demirkiran
- Cukurova University, Faculty of Medicine, Neurology Department, Adana, Turkey
| | - Cenk Akbostanci
- Ankara University, Faculty of Medicine, Neurology Department, Ankara, Turkey
| | - Okan Dogu
- Mersin University, Faculty of Medicine, Neurology Department, Mersin, Turkey
| | - Hakan Kaleagasi
- Mersin University, Faculty of Medicine, Neurology Department, Mersin, Turkey
| | - Gulay Kenangil
- BAU Medical Park Goztepe, Neurology Department, İstanbul, Turkey
| | - Raif Cakmur
- Dokuz Eylul University, Faculty of Medicine, Neurology Department, Izmir, Turkey
| | - Bulent Elibol
- Hacettepe University, Faculty of Medicine, Neurology Department, Ankara, Turkey
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Cecener G, Sabour Takanlou L, Sabour Takanlou M, Egeli U, Eskiler GG, Aksoy S, Unal U, Tezcan H, Eryilmaz IE, Gokgoz MS, Tunca B, Cubukcu E, Evrensel T, Cetintas S, Tasdelen I. Clinicopathologic features and genetic characteristics of the BRCA1/2 mutation in Turkish breast cancer patients. Cancer Genet 2020; 240:23-32. [DOI: 10.1016/j.cancergen.2019.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 10/14/2019] [Indexed: 12/29/2022]
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Yurdacan B, Egeli U, Guney Eskiler G, Eryilmaz IE, Cecener G, Tunca B. Investigation of new treatment option for hepatocellular carcinoma: a combination of sorafenib with usnic acid. J Pharm Pharmacol 2019; 71:1119-1132. [DOI: 10.1111/jphp.13097] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 03/24/2019] [Indexed: 12/30/2022]
Abstract
Abstract
Objectives
Sorafenib (SOR) is an orally administered molecular targeted agent in the systemic chemotherapy of hepatocellular carcinoma (HCC). However, the partial response of SOR is limited due to its adverse side effect and high heterogeneity and resistant phenotype of HCC. In the current study, we investigated synergistic effects of SOR and usnic acid (UA) on HCC cell lines including HepG2 and SNU-449, and a normal cell line, HUVEC.
Methods
The antiproliferative and apoptotic effects of combination therapy and SOR alone were analysed by WST-1 and Annexin V analysis, respectively. Furthermore, cell cycle, gene expression analysis of SOR-targeted kinases and acridine orange–ethidium bromide staining were also performed in combined treatments.
Key findings
Our results demonstrated that SOR and UA combination indicated a strong synergism in HCC cell lines and reduced SOR toxicity in HUVEC cells. Additionally, the combination treatment SOR and UA significantly induced much more apoptotic cell death and G0/G1 arrest through downregulation of SOR-targeted kinases.
Conclusions
Consequently, SOR and UA combination could be a new therapeutic strategy for HCC treatment.
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Affiliation(s)
- Beste Yurdacan
- Pharmacology Department, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Unal Egeli
- Medical Biology Department, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Gamze Guney Eskiler
- Medical Biology Department, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Isil Ezgi Eryilmaz
- Medical Biology Department, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Medical Biology Department, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Berrin Tunca
- Medical Biology Department, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
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Guney Eskiler G, Eryilmaz IE, Yurdacan B, Egeli U, Cecener G, Tunca B. Synergistic effects of hormone therapy drugs and usnic acid on hormone receptor-positive breast and prostate cancer cells. J Biochem Mol Toxicol 2019; 33:e22338. [PMID: 30980508 DOI: 10.1002/jbt.22338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/09/2019] [Accepted: 03/25/2019] [Indexed: 12/24/2022]
Abstract
The aim of this study was to investigate the combined effects of usnic acid (UA) and Tamoxifen (Tam) or Enzalutamide (Enz) on hormone receptor-positive breast and prostate cancer (BC and PC), respectively. The antiproliferative and apoptotic effects of Tam or Enz alone and in combination with UA on MCF7 and LNCaP cancer cells were detected. The results of the WST-1 assay indicated that UA was a promising anticancer compound that significantly enhanced the effectiveness of hormone therapy drugs compared with each drug alone (combination index < 1). In addition, the combination of UA with Tam or Enz remarkably induced more cell cycle arrest at the G0/G1 phase and apoptosis than only drug-treated cells (P < 0.01). Consequently, our findings suggest that the combination of UA with Tam or Enz may be a potential therapeutic approach for the treatment of BC and PC and further studies are required to exploit the potential mechanisms of synergistic effects.
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Affiliation(s)
- Gamze Guney Eskiler
- Department of Medical Biology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Isil Ezgi Eryilmaz
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Beste Yurdacan
- Department of Pharmacology, Faculty of Pharmacy, Ege University, Izmir, Turkey
| | - Unal Egeli
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - Berrin Tunca
- Department of Medical Biology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
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10
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Eryilmaz IE, Guney Eskiler G, Egeli U, Yurdacan B, Cecener G, Tunca B. In vitro cytotoxic and antiproliferative effects of usnic acid on hormone-dependent breast and prostate cancer cells. J Biochem Mol Toxicol 2018; 32:e22208. [PMID: 30101414 DOI: 10.1002/jbt.22208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/25/2018] [Accepted: 07/06/2018] [Indexed: 02/04/2023]
Abstract
The aim of the current study was first to investigate cytotoxic activity of usnic acid (UA) on hormone-dependent breast and prostate cancer, and normal cells. Cells were treated with increasing concentrations (25 to 150 µM) of UA for 48 hours and cell viability, quantitative and morphological analysis of cell death, and cell cycle analysis were performed. UA was shown to have selective cytotoxicity on hormone-dependent cancer cells with the IC50 levels of 71.4 and 77.5 µM for MCF7 and LNCaP cells, respectively. UA induced apoptotic cell death and G0/G1 cell cycle arrest without damaging normal cells. MCF7 cells were more sensitive to UA than LNCaP cells. Our results first revealed that UA is a promising candidate as an alternative agent for hormone-dependent breast and prostate cancers. However, molecular mechanism underlying the UA-mediated cell death in cancer cells should be investigated further.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- Medical Biology Department, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Gamze Guney Eskiler
- Medical Biology Department, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - Unal Egeli
- Medical Biology Department, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Beste Yurdacan
- Medical Biology Department, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Gulsah Cecener
- Medical Biology Department, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - Berrin Tunca
- Medical Biology Department, Faculty of Medicine, Uludag University, Bursa, Turkey
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Yurdacan B, Egeli U, Eskiler GG, Eryilmaz IE, Cecener G, Tunca B. The role of usnic acid-induced apoptosis and autophagy in hepatocellular carcinoma. Hum Exp Toxicol 2018; 38:201-215. [DOI: 10.1177/0960327118792052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Usnic acid (UA) is a multifunctional bioactive lichen secondary metabolite with potential anti-cancer properties. Although the promising therapeutic effects of UA have been investigated in different cancer cell lines, the mechanism driving UA-induced cell death has yet to be elucidated. As the type of cell death (apoptosis or autophagy) induced by UA may vary depending on the cancer cell type, we first studied the cytotoxic effects of UA in HEPG2 (HBV(−)) and SNU-449(HBV(+)) hepatocellular carcinoma (HCC) cell lines. HCC cell viability was considerably reduced in a dose-dependent manner at 12, 24, and 48 h after treatment with UA ( p < 0.05). However, SNU-449 cells were more sensitive to UA than HEPG2 cells. UA also induced apoptotic cell death in HCC cells with cell cycle arrest at G0/G1 and G2/M phase depending on the genetic profile of each cell type. On the other hand, we observed acidic vesicular organelles in HCC cells after 36 h of UA treatment. Taken together, these findings suggest that UA stimulates apoptosis and autophagy in HEPG2 and SNU-449 cells without damaging normal control cells. Thus, UA might be a potential therapeutic compound for HCC treatment. However, there is a need for further studies investigating the death-promoting or preventing roles for autophagy and the molecular signaling mechanisms induced by UA treatment.
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Affiliation(s)
- B Yurdacan
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - U Egeli
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - G Guney Eskiler
- Department of Medical Biology, Faculty of Medicine, Sakarya University, Sakarya, Turkey
| | - IE Eryilmaz
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - G Cecener
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
| | - B Tunca
- Department of Medical Biology, Faculty of Medicine, Uludag University, Bursa, Turkey
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12
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Eryilmaz IE, Kordan Y, Vuruskan BA, Kaygısız O, Tunca B, Cecener G. T2E ( TMPRSS2-ERG ) fusion transcripts are associated with higher levels of AMACR mRNA and a subsequent prostate cancer diagnosis in patients with atypical small acinar proliferation. Gene 2018; 645:69-75. [DOI: 10.1016/j.gene.2017.12.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 12/04/2017] [Accepted: 12/18/2017] [Indexed: 10/18/2022]
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13
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Eryilmaz IE, Cecener G, Erer S, Egeli U, Tunca B, Zarifoglu M, Elibol B, Bora Tokcaer A, Saka E, Demirkiran M, Akbostanci C, Dogu O, Colakoglu B, Kenangil G, Kaleagasi H. Epigenetic approach to early-onset Parkinson's disease: low methylation status of SNCA and PARK2 promoter regions. Neurol Res 2017; 39:965-972. [PMID: 28830306 DOI: 10.1080/01616412.2017.1368141] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background and aim The effect of epigenetic modifications in the genes related to Parkinson's disease (PD) is still unclear. In the present study, we investigated methylation status of SNCA and PARK2 genes in patients with early-onset Parkinson's disease (EOPD). Materials and methods The promoter region methylation status of SNCA and PARK2 genes was evaluated by methylation specific-PCR (MSP) in 91 patients with EOPD and 52 healthy individuals. Results The methylation of SNCA and PARK2 promoter regions were significantly lower in EOPD patients compared to the control group (P = 0.013 and P = 0.03, respectively). We also found that the methylation status of the SNCA might be associated with positive family history of PD (P = 0.042). Conclusion Although it should be supported by further analysis, based on the results of the present study, the methylation status of SNCA and PARK2 genes might contribute to EOPD pathogenesis.
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Affiliation(s)
- Isil Ezgi Eryilmaz
- a Faculty of Medicine, Department of Medical Biology , Uludag University , Bursa , Turkey
| | - Gulsah Cecener
- a Faculty of Medicine, Department of Medical Biology , Uludag University , Bursa , Turkey
| | - Sevda Erer
- b Faculty of Medicine, Department of Neurology , Uludag University , Bursa , Turkey
| | - Unal Egeli
- a Faculty of Medicine, Department of Medical Biology , Uludag University , Bursa , Turkey
| | - Berrin Tunca
- a Faculty of Medicine, Department of Medical Biology , Uludag University , Bursa , Turkey
| | - Mehmet Zarifoglu
- a Faculty of Medicine, Department of Medical Biology , Uludag University , Bursa , Turkey
| | - Bulent Elibol
- c Faculty of Medicine, Department of Neurology , Hacettepe University , Ankara , Turkey
| | - Ayse Bora Tokcaer
- d Faculty of Medicine, Department of Neurology , Gazi University , Ankara , Turkey
| | - Esen Saka
- c Faculty of Medicine, Department of Neurology , Hacettepe University , Ankara , Turkey
| | - Meltem Demirkiran
- e Faculty of Medicine, Department of Neurology , Cukurova University , Adana , Turkey
| | - Cenk Akbostanci
- f Faculty of Medicine, Department of Neurology , Ankara University , Ankara , Turkey
| | - Okan Dogu
- g Faculty of Medicine, Department of Neurology , Mersin University , Mersin , Turkey
| | - Beril Colakoglu
- h Faculty of Medicine, Department of Neurology , Dokuz Eylul University , Izmir , Turkey
| | - Gulay Kenangil
- i Erenkoy Training and Research Hospital for Neurologic and Psychiatric Disease , Istanbul , Turkey
| | - Hakan Kaleagasi
- g Faculty of Medicine, Department of Neurology , Mersin University , Mersin , Turkey
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14
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Atasayar G, Eryilmaz IE, Karli N, Egeli U, Zarifoglu M, Cecener G, Taskapilioglu O, Tunca B, Yildirim O, Ak S, Tezcan G, Can FE. Association of MDR1 , CYP2D6 , and CYP2C19 gene polymorphisms with prophylactic migraine treatment response. J Neurol Sci 2016; 366:149-154. [DOI: 10.1016/j.jns.2016.05.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2015] [Revised: 04/14/2016] [Accepted: 05/11/2016] [Indexed: 12/30/2022]
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15
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Sen G, Eryilmaz IE, Ozakca D. The effect of aluminium-stress and exogenous spermidine on chlorophyll degradation, glutathione reductase activity and the photosystem II D1 protein gene (psbA) transcript level in lichen Xanthoria parietina. Phytochemistry 2014; 98:54-9. [PMID: 24359631 DOI: 10.1016/j.phytochem.2013.11.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 11/24/2013] [Accepted: 11/29/2013] [Indexed: 05/04/2023]
Abstract
In this study, the effects of short-term aluminium toxicity and the application of spermidine on the lichen Xanthoria parietina were investigated at the physiological and transcriptional levels. Our results suggest that aluminium stress leads to physiological processes in a dose-dependent manner through differences in lipid peroxidation rate, chlorophyll content and glutathione reductase (EC 1.6.4.2) activity in aluminium and spermidine treated samples. The expression of the photosystem II D1 protein (psbA) gene was quantified using semi-quantitative RT-PCR. Increased glutathione reductase activity and psbA mRNA transcript levels were observed in the X. parietina thalli that were treated with spermidine before aluminium-stress. The results showed that the application of spermidine could mitigate aluminium-induced lipid peroxidation and chlorophyll degradation on lichen X. parietina thalli through an increase in psbA transcript levels and activity of glutathione reductase (GR) enzymes.
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Affiliation(s)
- Gulseren Sen
- University of Bilecik Seyh Edebali, Faculty of Science and Art, Department of Molecular Biology and Genetics, Gulumbe-Bilecik, Turkey; University of Rize Recep Tayyip Erdogan, Faculty of Medicine, Rize, Turkey
| | - Isil Ezgi Eryilmaz
- University of Bilecik Seyh Edebali, Faculty of Science and Art, Department of Molecular Biology and Genetics, Gulumbe-Bilecik, Turkey
| | - Dilek Ozakca
- University of Bilecik Seyh Edebali, Faculty of Science and Art, Department of Molecular Biology and Genetics, Gulumbe-Bilecik, Turkey.
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