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Duzgun Ergun D, Pastaci Ozsobaci N, Yilmaz T, Ozcelik D, Kalkan MT. Zinc affects nuclear factor kappa b and DNA methyltransferase activity in C3H cancer fibroblast cells induced by a 2100 MHz electromagnetic field. Electromagn Biol Med 2022; 41:93-100. [PMID: 34994293 DOI: 10.1080/15368378.2021.2019760] [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] [Indexed: 11/03/2022]
Abstract
The use of mobile phones is becoming widespread with the development of technology, and as a result, its effects on human health are becoming more and more important every day. Studies have reported that the electromagnetic field (EMF) emitted by mobile phones may have adverse effects on the biological systems. In order to evaluate the effect of zinc (Zn) on C3H cancer fibroblast cells exposed to 2100 MHz EMF, we analyzed cell viability%, nuclear factor kappa b (NF-κB) and DNA methyltransferase (DNMT) activities. Cells were divided to following groups: Control, sham control, 2100 MHz EMF, 50 µM Zn + 2100 MHz EMF, 100 µM Zn + 2100 MHz EMF, and 200 µM Zn + 2100 MHz EMF for 2 h. We measurement cell viability, NF-κB and DNMT activities. There was increased cell viability % in the 2100 MHz EMF group compared to the control group, while the cell viability % was decreased in the 50, 100 and 200 µM Zn + 2100 MHz EMF groups compared to 2100 MHz EMF. NF-κB and DNMT activities were a significant increase in the 2100 MHz EMF group compared to the control group, although were statistically decreased in the 50, 100 and 200 µM Zn + 2100 MHz EMF groups compared to the 2100 MHz EMF group. Our results demonstrate that 2100 MHz EMF exposure in cancer fibroblast cells induce NF-κB and DNMT activities, whereas zinc supplementation reduce NF-κB and DNMT activities-induced 2100 MHz EMF.
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Affiliation(s)
- D Duzgun Ergun
- Department of Biophysics, Faculty of Medicine, Istanbul Aydin University, Istanbul, Turkey
| | - N Pastaci Ozsobaci
- Department of Biophysics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - T Yilmaz
- Department of Electronics and Communication Engineering, Istanbul Technical University, Istanbul, Turkey
| | - D Ozcelik
- Department of Biophysics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - M T Kalkan
- Department of Biophysics, Faculty of Medicine, Istanbul Aydin University, Istanbul, Turkey
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Ergun DD, Dursun S, Ozsobaci NP, Naziroglu M, Ozcelik D. Response of TRPM2 Channel to Hypercapnic Acidosis and Role of Zn, Se, and GSH. Biol Trace Elem Res 2022; 200:147-155. [PMID: 33689144 DOI: 10.1007/s12011-021-02652-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 02/22/2021] [Indexed: 11/30/2022]
Abstract
Hypercapnia can increase the production of reactive oxygen species (ROS) by inducing oxidative stress in cells. Transient receptor potential melastatin 2 (TRPM2) channel activation that is realized by ROS plays a critical role in the cellular mechanism. It was shown that antioxidants such as zinc (Zn), selenium (Se), and glutathione (GSH) can partake in the structures of enzymes and create a protective effect against oxidative stress. This study revealed the relationship between TRPM2 channel and hypercapnia, and the interaction of zinc, selenium, and glutathione. In our study, normoxia, hypercapnia, hypercapnia + Zn, hypercapnia + Se, and hypercapnia + GSH were created, in transfected HEK293 cells. The cells were exposed to normoxia or hypercapnia gasses in two different times (30 min and 60 min), while Zn, Se, and GSH were applied to the cells in the other groups before being exposed to the gas mixtures. The statistical evaluation showed a significant increase in lipid peroxidation (LPO) level and lactate dehydrogenase (LDH)% in the hypercapnia 30 min and 60 min groups, compared to the normoxia 30 min and 60 min groups, and an increase in LPO level and LDH% in the hypercapnia groups that Zn, Se, and GSH were applied. It was determined that in comparison with the normoxia 30 min and 60 min groups, the amount of inward Ca+2 current across TRPM2 channels and mean current density increased in the groups that were exposed to hypercapnia for 30 min and 60 min, while the same values significantly decreased in the hypercapnia groups that Zn, Se, and GSH were applied. Also, it was shown that oxidative stress rose as the duration of hypercapnia exposure increased. It was concluded that hypercapnia increased oxidative stress and caused cellular membrane damage, while the addition of Zn, Se, and GSH could protect the cell membrane from these damaging effects.
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Affiliation(s)
- D Duzgun Ergun
- Department of Biophysics, Faculty of Medicine, Istanbul Aydin University, Istanbul, Turkey.
- Department of Biophysics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey.
| | - S Dursun
- Department of Biophysics, Faculty of Medicine, Uskudar University, Istanbul, Turkey
| | - N Pastaci Ozsobaci
- Department of Biophysics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - M Naziroglu
- Department of Biophysics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
- Drug Discovery Unit, BSN Health, Analyses, Innovation, Consultancy, Organization, Agriculture, Industry LTD. Inc., Göller Bölgesi Teknokenti, Isparta, Turkey
| | - D Ozcelik
- Department of Biophysics, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Cai H, Stott MA, Ozcelik D, Parks JW, Hawkins AR, Schmidt H. On-chip wavelength multiplexed detection of cancer DNA biomarkers in blood. Biomicrofluidics 2016; 10:064116. [PMID: 28058082 PMCID: PMC5176344 DOI: 10.1063/1.4968033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 11/06/2016] [Indexed: 05/03/2023]
Abstract
We have developed an optofluidic analysis system that processes biomolecular samples starting from whole blood and then analyzes and identifies multiple targets on a silicon-based molecular detection platform. We demonstrate blood filtration, sample extraction, target enrichment, and fluorescent labeling using programmable microfluidic circuits. We detect and identify multiple targets using a spectral multiplexing technique based on wavelength-dependent multi-spot excitation on an antiresonant reflecting optical waveguide chip. Specifically, we extract two types of melanoma biomarkers, mutated cell-free nucleic acids -BRAFV600E and NRAS, from whole blood. We detect and identify these two targets simultaneously using the spectral multiplexing approach with up to a 96% success rate. These results point the way toward a full front-to-back chip-based optofluidic compact system for high-performance analysis of complex biological samples.
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Affiliation(s)
- H Cai
- School of Engineering, University of California , Santa Cruz. 1156 High Street, Santa Cruz, California 95064, USA
| | - M A Stott
- Department of Electrical and Computer Engineering, Brigham Young University , 459 Clyde Building, Provo, Utah 84602, USA
| | - D Ozcelik
- School of Engineering, University of California , Santa Cruz. 1156 High Street, Santa Cruz, California 95064, USA
| | - J W Parks
- School of Engineering, University of California , Santa Cruz. 1156 High Street, Santa Cruz, California 95064, USA
| | - A R Hawkins
- Department of Electrical and Computer Engineering, Brigham Young University , 459 Clyde Building, Provo, Utah 84602, USA
| | - H Schmidt
- School of Engineering, University of California , Santa Cruz. 1156 High Street, Santa Cruz, California 95064, USA
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Parks JW, Olson MA, Kim J, Ozcelik D, Cai H, Carrion R, Patterson JL, Mathies RA, Hawkins AR, Schmidt H. Integration of programmable microfluidics and on-chip fluorescence detection for biosensing applications. Biomicrofluidics 2014; 8:054111. [PMID: 25584111 PMCID: PMC4290670 DOI: 10.1063/1.4897226] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/24/2014] [Indexed: 05/05/2023]
Abstract
We describe the integration of an actively controlled programmable microfluidic sample processor with on-chip optical fluorescence detection to create a single, hybrid sensor system. An array of lifting gate microvalves (automaton) is fabricated with soft lithography, which is reconfigurably joined to a liquid-core, anti-resonant reflecting optical waveguide (ARROW) silicon chip fabricated with conventional microfabrication. In the automaton, various sample handling steps such as mixing, transporting, splitting, isolating, and storing are achieved rapidly and precisely to detect viral nucleic acid targets, while the optofluidic chip provides single particle detection sensitivity using integrated optics. Specifically, an assay for detection of viral nucleic acid targets is implemented. Labeled target nucleic acids are first captured and isolated on magnetic microbeads in the automaton, followed by optical detection of single beads on the ARROW chip. The combination of automated microfluidic sample preparation and highly sensitive optical detection opens possibilities for portable instruments for point-of-use analysis of minute, low concentration biological samples.
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Affiliation(s)
- J W Parks
- School of Engineering, University of California Santa Cruz , Santa Cruz, California 95064, USA
| | - M A Olson
- Department of Electrical and Computer Engineering, Brigham Young University , Provo, Utah 84602, USA
| | | | - D Ozcelik
- School of Engineering, University of California Santa Cruz , Santa Cruz, California 95064, USA
| | - H Cai
- School of Engineering, University of California Santa Cruz , Santa Cruz, California 95064, USA
| | - R Carrion
- Department of Virology and Immunology, Texas Biomedical Research Institute , 7620 NW Loop 410, San Antonio, Texas 78227, USA
| | - J L Patterson
- Department of Virology and Immunology, Texas Biomedical Research Institute , 7620 NW Loop 410, San Antonio, Texas 78227, USA
| | - R A Mathies
- Department of Chemistry, University of California Berkeley , Berkeley, California 94720, USA
| | - A R Hawkins
- Department of Electrical and Computer Engineering, Brigham Young University , Provo, Utah 84602, USA
| | - H Schmidt
- School of Engineering, University of California Santa Cruz , Santa Cruz, California 95064, USA
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Okur M, Eroz R, Mundlos S, Senses DA, Ulgen E, Ismailler ZB, Ozcelik D. EEC syndrome with a de novo mutation (c.953g > a) on exon 7 of P63 gene: a case report. Genet Couns 2012; 23:483-485. [PMID: 23431748] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
EEC syndrome is characterized by ectodermal dysplasia, ectrodactyly and cleft lip and/or palate and associated anomalies such as lacrimal duct obstruction, urinary tract anomaly, and hearing loss. This syndrome is a rare autosomal dominant disorder caused by heterozygous mutations in the p63 gene. Herein, a newborn infant with EEC syndrome with secundum atrial septal defect who had a de novo mutation (c.953G > A) on exon 7 of p63 gene is presented.
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Affiliation(s)
- M Okur
- Duzce University Medical Faculty, Department of Pediatrics, Duzce, Turkey.
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Winter J, Ilbert M, Graf PCF, Ozcelik D, Jakob U. Bleach activates a redox-regulated chaperone by oxidative protein unfolding. Cell 2008; 135:691-701. [PMID: 19013278 DOI: 10.1016/j.cell.2008.09.024] [Citation(s) in RCA: 263] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Revised: 07/26/2008] [Accepted: 09/12/2008] [Indexed: 01/09/2023]
Abstract
Hypochlorous acid (HOCl), the active ingredient in household bleach, is an effective antimicrobial produced by the mammalian host defense to kill invading microorganisms. Despite the widespread use of HOCl, surprisingly little is known about its mode of action. In this study, we demonstrate that low molar ratios of HOCl to protein cause oxidative protein unfolding in vitro and target thermolabile proteins for irreversible aggregation in vivo. As a defense mechanism, bacteria use the redox-regulated chaperone Hsp33, which responds to bleach treatment with the reversible oxidative unfolding of its C-terminal redox switch domain. HOCl-mediated unfolding turns inactive Hsp33 into a highly active chaperone holdase, which protects essential Escherichia coli proteins against HOCl-induced aggregation and increases bacterial HOCl resistance. Our results substantially improve our molecular understanding about HOCl's functional mechanism. They suggest that the antimicrobial effects of bleach are largely based on HOCl's ability to cause aggregation of essential bacterial proteins.
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Affiliation(s)
- J Winter
- Department of Molecular, University of Michigan, Ann Arbor, MI 48109, USA
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Kavak A, Ozcelik D, Belenli O, Buyukbabani N, Saglam I, Lazova R. A unique location of naevus sebaceus: labia minora. J Eur Acad Dermatol Venereol 2008; 22:1136-8. [DOI: 10.1111/j.1468-3083.2007.02552.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Akyolcu MC, Ozcelik D, Dursun S, Toplan S, Kahraman R. Accumulation of cadmium in tissue and its effect on live performance. ACTA ACUST UNITED AC 2003. [DOI: 10.1051/jp4:20030236] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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