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Mert-Ozupek N, Calibasi-Kocal G, Olgun N, Basbinar Y, Cavas L, Ellidokuz H. In-silico molecular interactions among the secondary metabolites of Caulerpa spp. and colorectal cancer targets. Front Chem 2022; 10:1046313. [PMID: 36561138 PMCID: PMC9763605 DOI: 10.3389/fchem.2022.1046313] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Caulerpa spp. secrete more than thirty different bioactive chemicals which have already been used in cancer treatment research since they play a pivotal role in cancer metabolism. Colorectal cancer is one of the most common cancer types, thus using novel and effective chemicals for colorectal cancer treatment is crucial. In the cheminformatics pipeline of this study, ADME-Tox and drug-likeness tests were performed for filtering the secondary metabolites of Caulerpa spp. The ligands which were selected from the ADME test were used for in silico molecular docking studies against the enzymes of the oxidative branch of the pentose phosphate pathway (glucose-6-phosphate dehydrogenase and 6-phosphoglutarate dehydrogenase), which is of great importance for colorectal cancer, by using AutoDock Vina. Pharmacophore modeling was carried out to align the molecules. Molecular dynamic simulations were performed for each target to validate the molecular docking studies and binding free energies were calculated. According to the ADME test results, 13 different secondary metabolites were selected as potential ligands. Molecular docking studies revealed that vina scores of caulerpin and monomethyl caulerpinate for G6PDH were found as -10.6 kcal mol-1, -10.5 kcal mol-1, respectively. Also, the vina score of caulersin for 6PGD was found as -10.7 kcal mol-1. The highest and the lowest binding free energies were calculated for monomethyl caulerpinate and caulersin, respectively. This in silico study showed that caulerpin, monomethyl caulerpinate, and caulersin could be evaluated as promising marine phytochemicals against pentose phosphate pathway enzymes and further studies are recommended to investigate the detailed activity of these secondary metabolites on these targets.
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Affiliation(s)
- Nazli Mert-Ozupek
- Department of Basic Oncology, Institute of Health Sciences, Dokuz Eylül University, İzmir, Türkiye
| | - Gizem Calibasi-Kocal
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylül University, İzmir, Türkiye
| | - Nur Olgun
- Department of Pediatric Oncology, Institute of Oncology, Dokuz Eylül University, İzmir, Türkiye
| | - Yasemin Basbinar
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylül University, İzmir, Türkiye
| | - Levent Cavas
- Department of Chemistry, Faculty of Sciences, Dokuz Eylül University, İzmir, Türkiye
| | - Hulya Ellidokuz
- Department of Preventive Oncology, Institute of Oncology, Dokuz Eylül University, İzmir, Türkiye,*Correspondence: Hulya Ellidokuz,
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Mert-Ozupek N, Calibasi-Kocal G, Olgun N, Basbinar Y, Cavas L, Ellidokuz H. An Efficient and Quick Analytical Method for the Quantification of an Algal Alkaloid Caulerpin Showed In-Vitro Anticancer Activity against Colorectal Cancer. Mar Drugs 2022; 20:md20120757. [PMID: 36547904 PMCID: PMC9781365 DOI: 10.3390/md20120757] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/23/2022] [Accepted: 11/23/2022] [Indexed: 12/02/2022] Open
Abstract
Biological invasion is the successful spread and establishment of a species in a novel environment that adversely affects the biodiversity, ecology, and economy. Both invasive and non-invasive species of the Caulerpa genus secrete more than thirty different secondary metabolites. Caulerpin is one of the most common secondary metabolites in genus Caulerpa. In this study, caulerpin found in invasive Caulerpa cylindracea and non-invasive Caulerpa lentillifera extracts were analyzed, quantified, and compared using high-performance thin layer chromatography (HPTLC) for the first time. The anticancer activities of caulerpin against HCT-116 and HT-29 colorectal cancer (CRC) cell lines were also tested. Caulerpin levels were found higher in the invasive form (108.83 ± 5.07 µg mL-1 and 96.49 ± 4.54 µg mL-1). Furthermore, caulerpin isolated from invasive Caulerpa decreased cell viability in a concentration-dependent manner (IC50 values were found between 119 and 179 µM), inhibited invasion-migration, and induced apoptosis in CRC cells. In comparison, no cytotoxic effects on the normal cell lines (HDF and NIH-3T3) were observed. In conclusion, HPTLC is a quick and novel method to investigate the caulerpin levels found in Caulerpa extracts, and this paper proposes an alternative utilization method for invasive C. cylindracea due to significant caulerpin content compared to non-invasive C. lentillifera.
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Affiliation(s)
- Nazli Mert-Ozupek
- Department of Basic Oncology, Institute of Health Sciences, Dokuz Eylül University, Izmir 35340, Turkey
| | - Gizem Calibasi-Kocal
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylül University, Izmir 35340, Turkey
| | - Nur Olgun
- Department of Pediatric Oncology, Institute of Oncology, Dokuz Eylül University, Izmir 35340, Turkey
| | - Yasemin Basbinar
- Department of Translational Oncology, Institute of Oncology, Dokuz Eylül University, Izmir 35340, Turkey
| | - Levent Cavas
- Department of Chemistry, Faculty of Sciences, Dokuz Eylül University, Izmir 35390, Turkey
| | - Hulya Ellidokuz
- Department of Preventive Oncology, Institute of Oncology, Dokuz Eylül University, Izmir 35340, Turkey
- Correspondence: ; Tel.: +90-232-41258890
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Arayici ME, Mert-Ozupek N, Yalcin F, Basbinar Y, Ellidokuz H. Soluble and Insoluble Dietary Fiber Consumption and Colorectal Cancer Risk: A Systematic Review and Meta-Analysis. Nutr Cancer 2021; 74:2412-2425. [PMID: 34854791 DOI: 10.1080/01635581.2021.2008990] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide with a high mortality rate. Dietary fibers, both soluble and insoluble, are essential for reducing the risk of CRC. In this study, a meta-analysis was performed to examine the relationship between the soluble and insoluble dietary fiber consumption and CRC risk. The highest vs. lowest fiber concentrations were compared by using PRISMA guidelines. To determine publishing bias, the Egger test; assess study heterogeneity I2 statistics were used. Studies that reported adjusted relative risk estimates with 95% confidence intervals (Cl) for the associations of interest were included. The results reveal that the relationship between soluble and insoluble fiber intake and the risk of CRC is almost equal [The total fiber ES = 0.75 (95% CI = 0.66-0.86), soluble fiber ES = 0.78 (95% CI = 0.66-0.92), insoluble fiber ES = 0.77 (95% CI = 0.67-0.88)]. Funnel plot and Egger's linear regression tests demonstrated that there was no publication bias. Both soluble and insoluble fiber consumption appear to be protective against CRC, with a clinically significant reduction in CRC risk. It is critical to identify preventive steps to avoid the CRC development, especially by leading a healthier lifestyle that includes healthy diet.
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Affiliation(s)
- Mehmet Emin Arayici
- Institute of Health Sciences, Department of Preventive Oncology, Dokuz Eylul University, Izmir, Turkey
| | - Nazli Mert-Ozupek
- Institute of Health Sciences, Department of Basic Oncology, Dokuz Eylul University, Izmir, Turkey
| | - Femin Yalcin
- Department of Engineering Sciences, Faculty of Engineering and Architecture, Izmir Katip Celebi University, Izmir, Turkey
| | - Yasemin Basbinar
- Institute of Oncology, Department of Translational Oncology, Dokuz Eylul University, Izmir, Turkey
| | - Hulya Ellidokuz
- Institute of Oncology, Department of Preventive Oncology, Dokuz Eylul University, Izmir, Turkey
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Mert-Ozupek N, Basbinar Y, Uysal-Kilic T, Koz O, Ellidokuz H, Cavas L. Semi-Purified Saponins of Holothuria poli Associated Antiproliferation in Tumor Cell Lines. Nutr Cancer 2021; 74:1511-1518. [PMID: 34459328 DOI: 10.1080/01635581.2021.1952630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The incidence of cancer has exhibited an increasing trend in recent years because of many reasons such as environmental and nutritional factors. There is a great need for the development of new and natural molecules with lower side effects in the therapy of cancer. It was aimed to evaluate the antiproliferative effect of semi-purified triterpene glycosides of Holothuria poli on different human cancer cell lines. The body walls of H. poli as the main sources of saponins were used and the saponin content of the extract was characterized by MALDI-TOF/MS. The antiproliferation activity of the characterized extract was tested on cancer cell lines. The extract showed antiproliferative effect on the studied cancer cell lines. The mass analysis results reveal that Holothurin A is one of the saponins within the extract. The measured IC50 values were found as 31.41 ± 2.20, 77.45 ± 0.23, and 34.79 ± 0.90 µg mL-1 for HT-29, UPCI-SCC-131, and T84 cell lines, respectively. H. poli secretes not only specific saponins but also a cocktail of them. Specific versus. cocktails of the saponins and by also applying organic modification must be studied in further research to understand their mechanisms in the antiproliferation studies since this paper reveals promising results.
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Affiliation(s)
- Nazli Mert-Ozupek
- Institute of Health Sciences, Department of Basic Oncology, Dokuz Eylül University, İzmir, Turkey
| | - Yasemin Basbinar
- Institute of Oncology, Department of Translational Oncology, Dokuz Eylül University, İzmir, Turkey
| | - Tugba Uysal-Kilic
- Department of Molecular Biology and Genetics, Hitit University, Corum, Turkey
| | - Omer Koz
- Department of Chemistry, Bursa Technical University, Bursa, Turkey
| | - Hulya Ellidokuz
- Institute of Oncology, Department of Preventive Oncology, Dokuz Eylül University, İzmir, Turkey
| | - Levent Cavas
- Department of Chemistry, Dokuz Eylül University, İzmir, Turkey
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Kandemir-Cavas C, Pérez-Sanchez H, Mert-Ozupek N, Cavas L. In Silico Analysis of Bioactive Peptides in Invasive Sea Grass Halophila stipulacea. Cells 2019; 8:cells8060557. [PMID: 31181665 PMCID: PMC6628230 DOI: 10.3390/cells8060557] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/28/2019] [Accepted: 05/30/2019] [Indexed: 12/14/2022] Open
Abstract
Halophila stipulacea is a well-known invasive marine sea grass in the Mediterranean Sea. Having been introduced into the Mediterranean Sea via the Suez Channel, it is considered a Lessepsian migrant. Although, unlike other invasive marine seaweeds, it has not demonstrated serious negative impacts on indigenous species, it does have remarkable invasive properties. The present in-silico study reveals the biotechnological features of H. stipulacea by showing bioactive peptides from its rubisc/o protein. These are features such as antioxidant and hypolipideamic activities, dipeptidyl peptidase-IV and angiotensin converting enzyme inhibitions. The reported data open up new applications for such bioactive peptides in the field of pharmacy, medicine and also the food industry.
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Affiliation(s)
- Cagin Kandemir-Cavas
- Department of Computer Science, Faculty of Science, Dokuz Eylül University, İzmir 35390, Turkey.
| | - Horacio Pérez-Sanchez
- Bioinformatics and High Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), 30107 Murcia, Spain.
| | | | - Levent Cavas
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, İzmir 35390, Turkey.
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