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Uzunoglu A, Gunes Altuntas E, Huseyin Ipekci H, Ozoglu O. Two-Dimensional (2D) materials in the detection of SARS-CoV-2. Microchem J 2023; 193:108970. [PMID: 37342763 PMCID: PMC10265934 DOI: 10.1016/j.microc.2023.108970] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 02/20/2023] [Revised: 06/10/2023] [Accepted: 06/10/2023] [Indexed: 06/23/2023]
Abstract
The SARS-CoV-2 pandemic has resulted in a devastating effect on human health in the last three years. While tremendous effort has been devoted to the development of effective treatment and vaccines against SARS-CoV-2 and controlling the spread of it, collective health challenges have been encountered along with the concurrent serious economic impacts. Since the beginning of the pandemic, various detection methods like PCR-based methods, isothermal nucleic acid amplification-based (INAA) methods, serological methods or antibody tests, and evaluation of X-ray chest results have been exploited to diagnose SARS-CoV-2. PCR-based detection methods in these are considered gold standards in the current stage despite their drawbacks, including being high-cost and time-consuming procedures. Furthermore, the results obtained from the PCR tests are susceptible to sample collection methods and time. When the sample is not collected properly, obtaining a false result may be likely. The use of specialized lab equipment and the need for trained people for the experiments pose additional challenges in PCR-based testing methods. Also, similar problems are observed in other molecular and serological methods. Therefore, biosensor technologies are becoming advantageous with their quick response, high specificity and precision, and low-cost characteristics for SARS-CoV-2 detection. In this paper, we critically review the advances in the development of sensors for the detection of SARS-CoV-2 using two-dimensional (2D) materials. Since 2D materials including graphene and graphene-related materials, transition metal carbides, carbonitrides, and nitrides (MXenes), and transition metal dichalcogenides (TMDs) play key roles in the development of novel and high-performance electrochemical (bio)sensors, this review pushes the sensor technologies against SARS-CoV-2 detection forward and highlights the current trends. First, the basics of SARS-CoV-2 detection are described. Then the structure and the physicochemical properties of the 2D materials are explained, which is followed by the development of SARS-CoV-2 sensors by exploiting the exceptional properties of the 2D materials. This critical review covers most of the published papers in detail from the beginning of the outbreak.
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Affiliation(s)
- Aytekin Uzunoglu
- Faculty of Engineering, Metallurgical & Materials Engineering, Necmettin Erbakan University, Konya 42090, Turkey
| | - Evrim Gunes Altuntas
- Ankara University, Biotechnology Institute, Gumusdere Campus, 06135, Ankara, Turkey
| | - Hasan Huseyin Ipekci
- Faculty of Engineering, Metallurgical & Materials Engineering, Necmettin Erbakan University, Konya 42090, Turkey
| | - Ozum Ozoglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludag University, 16059 Bursa, Turkey
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Kucukbagriacik Y, Dastouri M, Yilmaz H, Altuntas EG. The apoptotic effect of the Lycopodium clavatum extracts on MCF-7 human breast cancer cells. Med Oncol 2023; 40:289. [PMID: 37658180 DOI: 10.1007/s12032-023-02159-7] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 08/12/2023] [Indexed: 09/03/2023]
Abstract
Breast cancer is a significant health problem worldwide, and the search for effective treatments is critical. Side effects of cancer treatments such as surgery, radiotherapy, and chemotherapy reduce the patient's standard of living. Recently, natural compounds from plants have gained attention as potential anticancer agents due to their safety, low toxicity, and potential efficacy. Lycopodium Clavatum (LC) is an herb abundant in tropical regions and Europe and is known for its various medicinal properties. In this study, we investigated the cytotoxic and apoptotic effects of LC Water Extract (LC-WE) and LC Ethanol Extract (LC-EE) plant extracts on MCF-7 human breast cancer cells. Our results showed that LC treatment led to a dose and time-dependent cytotoxic effect on MCF-7 cells, indicating its potential as an anticancer agent against human breast cancer. Additionally, we observed that LC treatment activated apoptosis-related proteins, including BAX, Caspase-3, and Caspase-9. These results suggest that LC may induce apoptosis as a mechanism underlying its cytotoxic effect on MCF-7 human breast cancer cells. Previous studies have shown the anti-cancer potential of LC against different types of cancer. However, the anti-cancer effect of LC on human breast cancer cells has not been investigated to date. Therefore, our study provides novel insights into the potential of LC as an anti-cancer agent against breast cancer. Overall, our results highlight the potential of LC as a promising natural compound for breast cancer treatment.
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Affiliation(s)
- Yusuf Kucukbagriacik
- Department of Biophysics, Gulhane Faculty of Medicine, Health Sciences University, Ankara, Turkey
- Yozgat Bozok University, Medical School, Yozgat, Turkey
| | - Mohammadreza Dastouri
- Faculty of Medical Biology, School of Medicine, Ankara Medipol University, Ankara, Turkey.
| | - Humeyra Yilmaz
- Department of Medical Biology, Institute of Health Sciences, Ankara Yildirim Beyazit University, Ankara, Turkey
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Unal MA, Kaymaz O, Gunes Altuntas E, Juneja VK, Elmali A. Effect of Disulfide Bonds on the Thermal Stability of Pediocin: In-silico Screening Using Molecular Dynamics Simulation. J Food Prot 2023; 86:100107. [PMID: 37230415 DOI: 10.1016/j.jfp.2023.100107] [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: 12/09/2022] [Revised: 05/16/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
The thermal stability properties of pediocin at 310, 313, 323, 333, 343, and 348 K (37, 40, 50, 60, 70, and 75°C, respectively) are reported in this study. A theoretical approach, such as the molecular dynamics method, was used to analyze the structure. Molecular dynamics simulation confirms the stability of molecules with Cys. Furthermore, this study reveals that Cys residues play an essential role in structure stability at high temperatures. To understand the structural basis for the stability of pediocin, a detailed in-silico analysis using molecular dynamics simulations to explore the thermal stability profiles of the compounds was conducted. This study shows that thermal effects fundamentally alter the functionally crucial secondary structure of pediocin. However, as previously reported, pediocin's activity was strictly conserved due to the disulfide bond between Cys residues. These findings reveal, for the first time, the dominant factor behind the thermodynamic stability of pediocin.
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Affiliation(s)
| | - Ozlem Kaymaz
- Ankara University Faculty of Science Department of Statistic, Ankara, Turkey
| | | | - Vijay K Juneja
- U.S. Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, United States
| | - Ayhan Elmali
- Ankara University Faculty of Engineering Department of Physics Engineering, Ankara, Turkey
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Ozoglu O, Uzunoglu A, Unal MA, Gumustas M, Ozkan SA, Korukluoglu M, Gunes Altuntas E. Electrochemical detection of lactate produced by foodborne presumptive lactic acid bacteria. J Biosci Bioeng 2023; 135:313-320. [PMID: 36828687 DOI: 10.1016/j.jbiosc.2022.12.014] [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: 07/06/2022] [Revised: 10/21/2022] [Accepted: 12/30/2022] [Indexed: 02/25/2023]
Abstract
The detection of lactate is an important indicator of the freshness, stability, and storage stability of products as well as the degree of fermentation in the food industry. In addition, it can be used as a diagnostic tool in patients' healthcare since it is known that the lactate level in blood increases in some pathological conditions. Thus, the determination of lactate level plays an important role in not only the food industry but also in health fields. As a result, biosensor technologies, which are quick, cheap, and easy to use, have become important for lactate detection. In the current study, amperometric lactate biosensors based on lactate oxidase immobilization (with Nafion 5% wt) were designed and the limit of detection, linear range, and sensitivity values were determined to be 31 μM, 50-350 μM, and 0.04 μA μM-1 cm-2, respectively. Then, it was used for the measurement of lactic acid that produced by six different and morphologically identified presumptive lactic acid bacteria (LAB) which are isolated from different naturally fermented cheese samples. The biosensors were then used to successfully perform lactate measurements within 3 min for each sample, even though a few of them were out of the limit of detection. Thus, electrochemical biosensors should be used as an alternative and quick solutions for the measurement of lactate metabolites rather than the traditional methods which require long working hours. This is the first study to use a biosensor to measure lactate produced by foodborne LAB in a real sample.
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Affiliation(s)
- Ozum Ozoglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludağ University, 16059 Bursa, Turkey.
| | - Aytekin Uzunoglu
- Department of Metallurgical and Materials Engineering, Faculty of Engineering, Necmettin Erbakan University, Konya 42090, Turkey
| | - Mehmet Altay Unal
- Stem Cell Institute, Ankara University, Balgat, Ankara 06520, Turkey
| | - Mehmet Gumustas
- Institute of Forensic Sciences, Department of Forensic Toxicology, Ankara University, Ankara 06590, Turkey
| | - Sibel Aysıl Ozkan
- Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara 06590, Turkey
| | - Mihriban Korukluoglu
- Department of Food Engineering, Faculty of Agriculture, Bursa Uludağ University, 16059 Bursa, Turkey
| | - Evrim Gunes Altuntas
- Ankara University, Biotechnology Institute, Gumusdere Campus, 06135 Ankara, Turkey
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Cosar B, Karagulleoglu ZY, Unal S, Ince AT, Uncuoglu DB, Tuncer G, Kilinc BR, Ozkan YE, Ozkoc HC, Demir IN, Eker A, Karagoz F, Simsek SY, Yasar B, Pala M, Demir A, Atak IN, Mendi AH, Bengi VU, Cengiz Seval G, Gunes Altuntas E, Kilic P, Demir-Dora D. SARS-CoV-2 Mutations and their Viral Variants. Cytokine Growth Factor Rev 2022; 63:10-22. [PMID: 34580015 PMCID: PMC8252702 DOI: 10.1016/j.cytogfr.2021.06.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 40.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/10/2021] [Accepted: 06/11/2021] [Indexed: 12/23/2022]
Abstract
Mutations in the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) occur spontaneously during replication. Thousands of mutations have accumulated and continue to since the emergence of the virus. As novel mutations continue appearing at the scene, naturally, new variants are increasingly observed. Since the first occurrence of the SARS-CoV-2 infection, a wide variety of drug compounds affecting the binding sites of the virus have begun to be studied. As the drug and vaccine trials are continuing, it is of utmost importance to take into consideration the SARS-CoV-2 mutations and their respective frequencies since these data could lead the way to multi-drug combinations. The lack of effective therapeutic and preventive strategies against human coronaviruses (hCoVs) necessitates research that is of interest to the clinical applications. The reason why the mutations in glycoprotein S lead to vaccine escape is related to the location of the mutation and the affinity of the protein. At the same time, it can be said that variations should occur in areas such as the receptor-binding domain (RBD), and vaccines and antiviral drugs should be formulated by targeting more than one viral protein. In this review, a literature survey in the scope of the increasing SARS-CoV-2 mutations and the viral variations is conducted. In the light of current knowledge, the various disguises of the mutant SARS-CoV-2 forms and their apparent differences from the original strain are examined as they could possibly aid in finding the most appropriate therapeutic approaches.
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Affiliation(s)
- Begum Cosar
- Başkent University, Faculty of Science and Letters, Department of Molecular Biology and Genetics, Ankara, Turkey
| | - Zeynep Yagmur Karagulleoglu
- Yıldız Technical University, Faculty of Arts and Science, Department of Molecular Biology and Genetics, İstanbul, Turkey
| | - Sinan Unal
- Yıldız Technical University, Faculty of Arts and Science, Department of Molecular Biology and Genetics, İstanbul, Turkey
| | | | - Dilruba Beyza Uncuoglu
- Ankara University, Graduate School of Natural and Applied Sciences, Department of Biology, Ankara, Turkey
| | - Gizem Tuncer
- Hacettepe University, Graduate School of Science and Engineering, General Biology Program, Ankara, Turkey; HücreCELL Biotechnology Development and Commerce, Inc., Ankara, Turkey
| | - Bugrahan Regaip Kilinc
- Kastamonu University, School of Engineering and Architecture, Department of Genetics and Bioengineering, Kastamonu, Turkey; Kastamonu University, School of Engineering and Architecture, Department of Biomedical Engineering, Kastamonu, Turkey
| | - Yunus Emre Ozkan
- Gebze Technical University, Faculty of Science, Department of Molecular Biology and Genetics, Kocaeli, Turkey
| | - Hikmet Ceyda Ozkoc
- Akdeniz University, Faculty of Medicine, Department of Medical Pharmacology, Antalya, Turkey
| | | | - Ali Eker
- Akdeniz University, Faculty of Medicine, Antalya, Turkey
| | | | | | - Bunyamin Yasar
- Alanya Alaaddin Keykubat University, Department of Molecular Medicine, Antalya, Turkey
| | - Mehmetcan Pala
- Sivas Cumhuriyet University, Faculty of Science, Department of Molecular Biology and Genetics, Sivas, Turkey
| | - Aysegul Demir
- Üsküdar University, Faculty of Engineering and Natural Sciences, Department of Molecular Biology and Genetics, İstanbul, Turkey
| | - Irem Naz Atak
- Ankara University, Faculty of Science, Department of Biology, Ankara, Turkey
| | - Aysegul Hanife Mendi
- Gazi University, Faculty of Dentistry, Department of Basic Sciences, Division of Medical Microbiology, Ankara, Turkey
| | - Vahdi Umut Bengi
- Gülhane Training and Research Hospital, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey
| | - Guldane Cengiz Seval
- Ankara University, School of Medicine Department of Hematology, Cebeci, Ankara, Turkey
| | | | - Pelin Kilic
- HücreCELL Biotechnology Development and Commerce, Inc., Ankara, Turkey; Ankara University, Stem Cell Institute, Ankara, Turkey.
| | - Devrim Demir-Dora
- Akdeniz University, Faculty of Medicine, Department of Medical Pharmacology, Antalya, Turkey; Akdeniz University, Health Sciences Institute, Department of Gene and Cell Therapy, Antalya, Turkey; Akdeniz University, Health Sciences Institute, Department of Medical Biotechnology, Antalya, Turkey.
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Juneja VK, Osoria M, Altuntas EG, Salazar JK, Kumar GD, Sehgal S, Baker D. Inactivation of
Listeria monocytogenes
,
Escherichia coli
O157:H7, and
Salmonella
spp. on dates by antimicrobial washes. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Vijay K. Juneja
- U.S. Department of Agriculture Agricultural Research Service Eastern Regional Research Center Wyndmoor PA USA
| | - Marangeli Osoria
- U.S. Department of Agriculture Agricultural Research Service Eastern Regional Research Center Wyndmoor PA USA
| | | | - Joelle K. Salazar
- Division of Food Processing Science and Technology U.S. Food and Drug Administration Bedford Park IL USA
| | | | - Shalini Sehgal
- Department of Food Technology Bhaskaracharya College of Applied SciencesUniversity of Delhi New Delhi India
| | - David Baker
- Dr. Baker, P.C. – Consultancy & Outsource Quality Management Atlanta GA USA
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Kaskatepe B, Yildiz SS, Mumcuoglu I, Ozet G, Altuntas EG. RS sample: Can be guide for empirical treatment of haematological malignancy patients? Microb Pathog 2018; 125:164-167. [DOI: 10.1016/j.micpath.2018.09.013] [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: 05/02/2018] [Revised: 09/07/2018] [Accepted: 09/07/2018] [Indexed: 11/26/2022]
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Okcu G, Ayhan K, Gunes Altuntas E, Vural N, Poyrazoglu ES. Determination of phenolic acid decarboxylase produced by lactic acid bacteria isolated from shalgam (şalgam) juice using green analytical chemistry method. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.10.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Altuntas EG, Kocan D, Cosansu S, Ayhan K, Juneja VK, Materon L. Antibiotic and Bacteriocin Sensitivity of <i>Listeria monocytogenes</i> Strains Isolated from Different Foods. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/fns.2012.33052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Altuntas EG, Cosansu S, Ayhan K. Some growth parameters and antimicrobial activity of a bacteriocin-producing strain Pediococcus acidilactici 13. Int J Food Microbiol 2010; 141:28-31. [PMID: 20483184 DOI: 10.1016/j.ijfoodmicro.2010.04.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Revised: 04/19/2010] [Accepted: 04/23/2010] [Indexed: 10/19/2022]
Abstract
Some growth parameters and bacteriocin production by the strain Pediococcus acidilactici 13, were screened in this study. The inhibitor substance produced by this strain showed strong antimicrobial activity at 204,800 AU/mL (Activity Units/mL) against the gram positive food borne pathogen, Listeria monocytogenes, when the incubation temperature was 37 degrees C and the initial pH of the medium, TGE (Trypton Glucose Yeast Extract), was 6.0. The bacteriocin-producing strain had considerable resistance NaCl, since the strain maintained to growth up to 10% NaCl concentrations at TGE broth and was able to grow in a wide temperature range (25-50 degrees C). The strain was identified as P. acidilactici with API 50 CHL, as well as with 16S rRNA gene sequencing.
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Affiliation(s)
- Evrim Gunes Altuntas
- Ankara University, Engineering Faculty, Food Engineering Department, Diskapi Campus, 06110 Diskapi/Ankara, Turkey
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