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Sayin S, Cay S. Novel An Efficient Fluorescent Probe Based on Calix[4]triazacrown-5 With Naphthalimide Group for Co 2+, Cd 2+ and Dopamine Detection. J Fluoresc 2024; 34:729-741. [PMID: 37358759 DOI: 10.1007/s10895-023-03314-z] [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: 05/12/2023] [Accepted: 06/13/2023] [Indexed: 06/27/2023]
Abstract
A novel naphthalimide-substituted calix[4]triazacrown-5 (Nap-Calix) at cone conformation was designed and synthesized to employ as a fluorescent probe, which enables the simultaneously detection of Co2+ and Cd2+ metal ions as well as dopamine (DA). 1H-NMR, 13C-NMR, ESI-MS and elemental analysis techniques were carried out to characterize its structure. Cation binding property of Nap-Calix against various metal ions such as Ba2+, Co2+, Ni2+, Pb2+, Zn2+, and Cd2+ exhibited that the sensor selectively binds to Co2+ and Cd2+ metal ions with a remarkable affinity. Introduction of Co2+ and Cd2+ metal ions to a solution of Nap-Calix in DMF/water (1:1, v/v) resulted with a new emission band at 370 nm when excited at 283 nm. In addition, the fluorescence sensing affinity of the probe Nap-Calix against a catecholamine neurotransmitter (dopamine) was investigated in a wide range of concentration of DA (0-0.1 mmol L-1) in 50% DMF/PBS (pH = 5.0). The fluorescence intensity of Nap-Calix, with excitation/emission peaks at 283/327 nm, is highly enhanced by DA. It was also observed that Nap-Calix exhibits excellent fluorescence behavior towards DA with a very low detection limit as 0.21 µmol L-1.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Giresun University, 28200, Giresun, Turkey.
| | - Seydahmet Cay
- Department of Environmental Engineering, Giresun University, 28200, Giresun, Turkey
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Sayin S. A highly selective and sensitive fluorescence probe for dopamine determination based on a bisquinoline-substituted calix[4]arene carboxylic acid derivative. J Biomol Struct Dyn 2023:1-9. [PMID: 37938142 DOI: 10.1080/07391102.2023.2278076] [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: 06/01/2023] [Accepted: 09/29/2023] [Indexed: 11/09/2023]
Abstract
Dopamine (DA) at normal levels in the human body exhibits a high potential for maintaining a proper neuron network. However, their abnormalities in humans can bring out aggressive disorders such as Schizophrenia, hypertension, Tourette's syndrome, Alzheimer's disease, bipolar depression, Parkinson's disease, drug addiction and attention-deficit hyperactivity diseases. Hence, in this study, a bis-quinoline-substituted calix[4] arene carboxylic acid derivative (Quin-Calix-CO2H) at cone conformation was developed as an effective fluorescent sensor for the detection of a catecholamine neurotransmitter (dopamine). The structure of Quin-Calix-CO2H was confirmed using 1H-NMR, 13C-NMR, ESI-MS and elemental analysis techniques. The calixarene-based fluorescent sensor (Quin-Calix-CO2H) has shown fluorescence emission at 404 nm under the excitation of 270 nm. Further, biomolecules binding property of Quin-Calix-CO2H against various biomolecules such as L-cysteine (L-Cys), α-D-glucose (D-Glu), (+)-sodium-L-ascorbate (SAA), urea (UR), L-alanine (L-Ala) and dopamine (DA) exhibited that the fluorescent sensor enables selectively and sensitively detection for DA with a remarkable affinity. The probe Quin-Calix-CO2H has shown fluorescence quenching towards DA concentration ranging from 0 to 4.0 µM with a very low limit of detection (LOD) of 88.5 nmol L-1. In addition, the binding constant and stoichiometry as well as the mechanism of quenching have been also determined from the fluorescence data.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Giresun University, Giresun, Turkey
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Sayin S, Mitchell A. Functional Assay for Measuring Bacterial Degradation of Gemcitabine Chemotherapy. Bio Protoc 2023; 13:e4797. [PMID: 37719072 PMCID: PMC10501921 DOI: 10.21769/bioprotoc.4797] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 09/19/2023] Open
Abstract
Drug biotransformation by the host microbiome can impact the therapeutic success of treatment. In the context of cancer, drug degradation can take place within the microenvironment of the targeted tumor by intratumor bacteria. In pancreatic cancer, increased chemo-resistance against the frontline chemotherapy gemcitabine is thought to arise from drug degradation by the tumor microbiome. This bacterial-drug interaction highlights the need for developing rapid assays for monitoring bacterial gemcitabine breakdown. While chemical approaches such as high-performance liquid chromatography are suitable for this task, they require specialized equipment and expertise and are limited in throughput. Functional cell-based assays represent an alternate approach for performing this task. We developed a functional assay to monitor the rate of bacterial gemcitabine breakdown using a highly sensitive bacterial reporter strain. Our method relies on standard laboratory equipment and can be implemented at high throughput to monitor drug breakdown by hundreds of strains simultaneously. This functional assay can be readily adapted to monitor degradation of other drugs. Key features Quantification of gemcitabine breakdown by incubating bacteria that degrades the drug and subsequently testing the growth of a reporter strain on filtered supernatant. Use of an optimized reporter strain that was genetically engineered to be a non-degrader strain and highly sensitive to gemcitabine. A high-throughput assay performed in microplates that can be adjusted for identifying bacteria with a fast or slow gemcitabine degradation rate. The assay results can be compared to results from a standard curve with known drug concentrations to quantify degradation rate.
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Affiliation(s)
- Serkan Sayin
- Department of Systems Biology, University of Massachusetts Chan
Medical School, Worcester, MA, USA
| | - Amir Mitchell
- Department of Systems Biology, University of Massachusetts Chan
Medical School, Worcester, MA, USA
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Sayin S, Rosener B, Li CG, Ho B, Ponomarova O, Ward DV, Walhout AJM, Mitchell A. Evolved bacterial resistance to the chemotherapy gemcitabine modulates its efficacy in co-cultured cancer cells. eLife 2023; 12:83140. [PMID: 36734518 PMCID: PMC9931390 DOI: 10.7554/elife.83140] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/22/2023] [Indexed: 02/04/2023] Open
Abstract
Drug metabolism by the microbiome can influence anticancer treatment success. We previously suggested that chemotherapies with antimicrobial activity can select for adaptations in bacterial drug metabolism that can inadvertently influence the host's chemoresistance. We demonstrated that evolved resistance against fluoropyrimidine chemotherapy lowered its efficacy in worms feeding on drug-evolved bacteria (Rosener et al., 2020). Here, we examine a model system that captures local interactions that can occur in the tumor microenvironment. Gammaproteobacteria-colonizing pancreatic tumors can degrade the nucleoside-analog chemotherapy gemcitabine and, in doing so, can increase the tumor's chemoresistance. Using a genetic screen in Escherichia coli, we mapped all loss-of-function mutations conferring gemcitabine resistance. Surprisingly, we infer that one third of top resistance mutations increase or decrease bacterial drug breakdown and therefore can either lower or raise the gemcitabine load in the local environment. Experiments in three E. coli strains revealed that evolved adaptation converged to inactivation of the nucleoside permease NupC, an adaptation that increased the drug burden on co-cultured cancer cells. The two studies provide complementary insights on the potential impact of microbiome adaptation to chemotherapy by showing that bacteria-drug interactions can have local and systemic influence on drug activity.
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Affiliation(s)
- Serkan Sayin
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Brittany Rosener
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Carmen G Li
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Bao Ho
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Olga Ponomarova
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Doyle V Ward
- Department of Microbiology and Physiological Systems, University of Massachusetts Chan Medical SchoolWorcesterUnited States
- Program in Microbiome Dynamics, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Albertha JM Walhout
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
- Program in Molecular Medicine, University of Massachusetts Chan Medical SchoolWorcesterUnited States
| | - Amir Mitchell
- Department of Systems Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
- Program in Microbiome Dynamics, University of Massachusetts Chan Medical SchoolWorcesterUnited States
- Program in Molecular Medicine, University of Massachusetts Chan Medical SchoolWorcesterUnited States
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical SchoolWorcesterUnited States
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Sayin S. A highly selective fluorescence probe for Co2+ or Cu2+ detection based on a new tetraquinoline-substituted calix[4]arene derivative. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Yildiz J, Bagci M, Sayin S, Kaya A, Yilmaz F, Ekinci O, Dal MS, Basturk A, Aydogdu I, Albayrak M, Dogan A, Erkurt MA, Korkmaz S, Ulas T, Eser B, Altuntas F. The clinicopathological features and survival of Castleman disease: a multicenter Turkish study. Eur Rev Med Pharmacol Sci 2022; 26:1131-1137. [PMID: 35253168 DOI: 10.26355/eurrev_202202_28103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE In this study, we aimed to investigate the clinicopathological features and survival of CD, which is quite rare and has many unknowns. PATIENTS AND METHODS This study was conducted by retrospectively evaluating patients diagnosed with CD in six different centers in Turkey. RESULTS The median age of 33 patients included in the study was 49 and 51.5% (n = 17) of these patients were women. 18 (54.5%) patients were in the hyaline vascular subtype and most of the patients were UCD (n = 20, 60.6%). The most common involvement region was head and neck (n = 19, 57.5%). The UCD group was younger than the MCD group (p=0.027). Visceral lymph node involvement was higher in MCD than in UCD (p=0.001). Similarly, it was observed that there was more hepatomegaly (p=0.035) and splenomegaly (p=0.013) in the MCD group. During the median 19.5 months follow-up period, there were no patients who died. CONCLUSIONS It was observed that UCD and MCD are different clinical entities. Promising survival times can be achieved with surgical and systemic treatments in both subtypes of this extremely rare disease. However, this result should be supported by well-designed prospective comprehensive studies.
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Affiliation(s)
- J Yildiz
- Department of Hematology, Yenimahalle Training and Research Hospital, Yildirim Beyazit University, Ankara, Turkey.
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Noto Guillen M, Rosener B, Sayin S, Mitchell A. Assembling stable syntrophic Escherichia coli communities by comprehensively identifying beneficiaries of secreted goods. Cell Syst 2021; 12:1064-1078.e7. [PMID: 34469744 PMCID: PMC8602757 DOI: 10.1016/j.cels.2021.08.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 01/18/2021] [Revised: 05/18/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
Abstract
Metabolic cross-feeding frequently underlies mutualistic relationships in natural microbial communities and is often exploited to assemble synthetic microbial consortia. We systematically identified all single-gene knockouts suitable for imposing cross-feeding in Escherichia coli and used this information to assemble syntrophic communities. Most strains benefiting from shared goods were dysfunctional in biosynthesis of amino acids, nucleotides, and vitamins or mutants in central carbon metabolism. We tested cross-feeding potency in 1,444 strain pairs and mapped the interaction network between all functional groups of mutants. This network revealed that auxotrophs for vitamins are optimal cooperators. Lastly, we monitored how assemblies composed of dozens of auxotrophs change over time and observed that they rapidly and repeatedly coalesced to seven strain consortia composed primarily from vitamin auxotrophs. The composition of emerging consortia suggests that they were stabilized by multiple cross-feeding interactions. We conclude that vitamins are ideal shared goods since they optimize consortium growth while still imposing member co-dependence.
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Affiliation(s)
- Mariana Noto Guillen
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Brittany Rosener
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Serkan Sayin
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Amir Mitchell
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01655, USA; Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, MA 01655, USA.
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Sayin S. Synthesis of new anthracene-substituted calix[4]triazacrown-5 as highly sensitive fluorescent chemosensor and extractant against hazardous dichromate anion. LUMINESCENCE 2021; 36:1716-1724. [PMID: 34164899 DOI: 10.1002/bio.4113] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 05/15/2021] [Revised: 06/17/2021] [Accepted: 06/20/2021] [Indexed: 02/01/2023]
Abstract
A new fluorogenic anthracene functionalized calix[4]triazacrown-5 (Ant-AzClx) was successfully synthesized using a simple Schiff's base reaction. The 1 H-NMR, 13 C-NMR, ESI-MS, and elemental analysis techniques were performed to characterize its structure. Excited at 370 nm, Ant-AzClx reveals excimer emission at 418 nm. Therefore, its anion binding properties were investigated against F- , HCO3 - , H2 PO4 - , NO3 - , Cr2 O7 2- , and SO4 2- ions. When hazardous dichromate anion was introduced into medium, the fluorescence intensity of Ant-AzClx was markedly quenched. The binding constant, stoichiometry, the detection limits and Stern-Volmer equation for the complex formed between Ant-AzClx and Cr2 O7 2- ion were determined. Furthermore, the 1 H-NMR technique was also performed to assess the mechanism of the complex (Ant-AzClx@Cr2 O7 2- ). Apart from its excellent fluorescent chemosensor properties for selective and sensitive recognition of Cr2 O7 2- ion, Ant-AzClx was used as an efficient extractant towards dichromate anion. The extraction results indicated that Ant-AzClx exhibited high extraction capability, leading to it being a promising extractant for the removal of dichromate anions from water.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Giresun University, Giresun, Turkey
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Sayin S. Synthesis of New Quinoline-Conjugated Calixarene as a Fluorescent Sensor for Selective Determination of Cu 2+ Ion. J Fluoresc 2021; 31:1143-1151. [PMID: 33978882 DOI: 10.1007/s10895-021-02749-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/07/2021] [Indexed: 12/27/2022]
Abstract
A novel quinoline-functionalized calix [4] arene derivative (Quin-Calix) has been successfully synthesized at partial cone conformation and duly characterized by using FTIR, 1H-NMR, 13C-NMR, ESI-MS and elemental analysis techniques. Moreover, the cation-binding property of the calix [4] arene derivative (Quin-Calix) has been investigated towards Cu2+, Ba2+, Cd2+, Co2+, Ni2+, Zn2+ and Fe3+ ions, and the recognition event monitored by UV-Vis absorption and fluorescence studies. The results indicated that Quin-Calix displays a remarkable affinity and selectivity only for Cu2+ ion. The binding constant and stoichiometry of the complex formed between Quin-Calix and Cu2+ ion have been also calculated from the fluorescence data. In addition, Stern-Vohmer equation has been used to elucidate the mechanism of quenching.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, 28200, Giresun, Turkey.
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Altinok-Yipel F, Tekeli IO, Ozsoy SY, Guvenc M, Sayin S, Yipel M. Investigation of hepatoprotective effect of some algae species on carbon tetrachloride-induced liver injury in rats. Arch Physiol Biochem 2020; 126:463-467. [PMID: 31855071 DOI: 10.1080/13813455.2019.1702062] [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] [Indexed: 10/25/2022]
Abstract
The aim of this study was to investigate hepatoprotective effect of some algae species such as Spirulina platensis, Chlorella vulgaris, Laminaria japonica, Sargassum sp. on experimental acute hepatotoxicity model that induced with carbon tetrachloride (CCl4) in rats. Algaes at a dose of 200 mg/kg and Silymarin at a dose of 25 mg/kg were orally administered for 7 days followed by CCl4 at a single dose (0.5 ml/kg), at the 8th day to cause experimental acute hepatotoxicity. Levels of biochemical (AST, ALT etc.), lipid peroxidation (MDA), antioxidant (GSH, CAT, GPx) parameters and histopathological examination were carried out to investigate the hepatoprotective effects of algae. In Sp group ALT and ALP levels were significantly decreased compared with CCl4 (p < .05). Histological liver structures of Sp group were similar to the control group. MDA, GPx and CAT levels of Sp and La groups were significantly different compared with CCl4 (p < .05). Based on these results, algae species able to minimise the toxic effects of CCl4 and especially S. platensis could be used in the purpose of protection against chemical-induced hepatotoxicity.
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Affiliation(s)
- F Altinok-Yipel
- Faculty of Veterinary Medicine, Department of Internal Medicine, Tekirdağ Namık Kemal University, Tekirdağ, Turkey
| | - I O Tekeli
- Faculty of Veterinary Medicine, Department of Pharmacology-Toxicology, Hatay Mustafa Kemal University, Hatay, Turkey
| | - S Y Ozsoy
- Faculty of Veterinary Medicine, Department of Pathology, Adnan Menderes University, Aydın, Turkey
| | - M Guvenc
- Faculty of Veterinary Medicine, Department of Physiology, Hatay Mustafa Kemal University, Hatay, Turkey
| | - S Sayin
- Faculty of Marine Sciences and Technology, Iskenderun Tech. University, Hatay, Turkey
| | - M Yipel
- Faculty of Veterinary Medicine, Department of Pharmacology-Toxicology, Tekirdağ Namık Kemal University, Tekirdağ, Turkey
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Rosener B, Sayin S, Oluoch PO, García González AP, Mori H, Walhout AJ, Mitchell A. Evolved bacterial resistance against fluoropyrimidines can lower chemotherapy impact in the Caenorhabditis elegans host. eLife 2020; 9:59831. [PMID: 33252330 PMCID: PMC7725501 DOI: 10.7554/elife.59831] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/25/2020] [Indexed: 12/13/2022] Open
Abstract
Metabolism of host-targeted drugs by the microbiome can substantially impact host treatment success. However, since many host-targeted drugs inadvertently hamper microbiome growth, repeated drug administration can lead to microbiome evolutionary adaptation. We tested if evolved bacterial resistance against host-targeted drugs alters their drug metabolism and impacts host treatment success. We used a model system of Caenorhabditis elegans, its bacterial diet, and two fluoropyrimidine chemotherapies. Genetic screens revealed that most of loss-of-function resistance mutations in Escherichia coli also reduced drug toxicity in the host. We found that resistance rapidly emerged in E. coli under natural selection and converged to a handful of resistance mechanisms. Surprisingly, we discovered that nutrient availability during bacterial evolution dictated the dietary effect on the host - only bacteria evolving in nutrient-poor media reduced host drug toxicity. Our work suggests that bacteria can rapidly adapt to host-targeted drugs and by doing so may also impact the host.
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Affiliation(s)
- Brittany Rosener
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States
| | - Serkan Sayin
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States
| | - Peter O Oluoch
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States
| | - Aurian P García González
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States
| | - Hirotada Mori
- Data Science Center, Nara Institute of Science and Technology, Ikoma, Japan
| | - Albertha Jm Walhout
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States.,Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States
| | - Amir Mitchell
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, United States.,Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, United States.,Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, United States
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Sayin S. Fabrication of Efficient Calix[4]arene-Adorned Magnetic Nanoparticles for the Removal of Cr(VI)/As(V) anions from Aqueous Solutions. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2020.1764986] [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: 10/24/2022]
Affiliation(s)
- Serkan Sayin
- Faculty of Engineering, Department of Environmental Engineering, Giresun University, Giresun, Turkey
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
| | - Elif Ozyilmaz
- Department of Biochemistry, Selcuk University, Konya, Turkey
| | - Mehmet Oguz
- Department of Chemistry, Selcuk University, Konya, Turkey
| | | | - Mustafa Yilmaz
- Department of Chemistry, Selcuk University, Konya, Turkey
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Kucukkolbasi S, Sayin S, Yılmaz M. Fabrication and Application of a New Modified Electrochemical Sensor Using Newly Synthesized Calixarene-Grafted Mwcnts for Simultaneous Determination of Cu(II) and Pb(II). Acta Chim Slov 2019. [DOI: 10.17344/acsi.2018.4922] [Citation(s) in RCA: 2] [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: 11/19/2022] Open
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Kucukkolbasi S, Sayin S, Yılmaz M. Fabrication and Application of a New Modified Electrochemical Sensor Using Newly Synthesized Calixarene-Grafted Mwcnts for Simultaneous Determination of Cu(II) and Pb(II). Acta Chim Slov 2019; 66:839-849. [PMID: 34057492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Abstract
A rapid, simple, selective and highly sensitive simultaneous determination of Cu(II) and Pb(II) via newly fashioned 5,11,17,23-tetra-tert-butyl-25,27-dihydrazinamidecarbonylmethoxy-26,28-dihydroxycalix[4]arene-grafted multi-walled carbon nanotubes-modified carbon paste electrode (CNT-Calix/CPE) by differential pulse anodic stripping voltammetry (DPASV) has been introduced. It was observed that CNT-Calix/CPE exhibits higher selectivity and stability for Cu(II) and Pb(II). Different operational parameters such as pH, deposition potential/time, pulse amplitude (5, -1.0 V vs. Ag/AgCl, 300 s, 2 s, 0.05 V) were also optimized for calculation and statistical evaluation of linear range, detection limit and limit of quantification. Interference study shows that the electrode is highly selective for the simultaneous determination of Cu(II) and Pb(II). Standard addition method was used to apply CNT-Calix/CPE in waste water, plant leaves and soft drinks and it was found that the concentration of Cu(II) and Pb(II) were corresponding to standardized values.
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Dahan O, Dorfman BS, Sayin S, Rosener B, Hua T, Yarden A, Mitchell A. Harnessing robotic automation and web-based technologies to modernize scientific outreach. PLoS Biol 2019; 17:e3000348. [PMID: 31242174 PMCID: PMC6615640 DOI: 10.1371/journal.pbio.3000348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 07/09/2019] [Indexed: 12/05/2022] Open
Abstract
Technological breakthroughs in the past two decades have ushered in a new era of biomedical research, turning it into an information-rich and technology-driven science. This scientific revolution, though evident to the research community, remains opaque to nonacademic audiences. Such knowledge gaps are likely to persist without revised strategies for science education and public outreach. To address this challenge, we developed a unique outreach program to actively engage over 100 high-school students in the investigation of multidrug-resistant bacteria. Our program uses robotic automation and interactive web-based tools to bridge geographical distances, scale up the number of participants, and reduce overall cost. Students and teachers demonstrated high engagement and interest throughout the project and valued its unique approach. This educational model can be leveraged to advance the massive open online courses movement that is already transforming science education. This Community Page article describes the use of robotic automation and web-based tools to allow high-school students around the world to run empirical experiments remotely and to collaboratively investigate the emergence of multidrug resistance during bacterial evolution.
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Affiliation(s)
- Orna Dahan
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Bat-Shahar Dorfman
- Department of Science Teaching, Weizmann Institute of Science, Rehovot, Israel
| | - Serkan Sayin
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Brittany Rosener
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Tiffany Hua
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Anat Yarden
- Department of Science Teaching, Weizmann Institute of Science, Rehovot, Israel
| | - Amir Mitchell
- Program in Systems Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
- * E-mail:
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Abstract
Context Restless legs syndrome (RLS) is a sensorimotor disorder that often has a profound impact on sleep and one of the most troublesome conditions experienced in hemodialysis patients. Aims: The aim of study was to search frequency of RLS and effects of RLS on quality of life (QoL) in chronic hemodialysis patients. Settings and Design Chronic hemodialysis patients of classical hemodialysis units were chosen. Length of the study was approximately 1 year. Subjects and Methods Two hundred and thirty-seven patients were investigated. RLS was diagnosed using to international the RLS questionnaire. The International RLS (IRLS) rating scale was used to calculate RLS severity. QoL was assessed using the World Health Organization QoL brief version (WHOQOL-BREF) instrument. Statistical Analysis Used Student's t-test, Chi-square test or Fisher's exact test, Bonferroni correction for multiple comparisons, and Pearson or Spearman correlation analysis were used. Significance level was P < 0.05. Results: The overall prevalence of RLS according to the four essential criteria was 18.6% (n = 44). According to IRLS, 22.7% of the patients with RLS were mild (n = 10), 63.6% were moderate (n = 28), and 13.7% were severe (n = 6). The parameters of QoL were compared in RLS-positive and negative patients. There was no significant difference in psychological health (P = 0.971), social relationships (P = 0.462), and environment (P = 0.483) between two groups. Only the physical health scores were higher in without RLS than patients with RLS (P = 0.027). Conclusions This study revealed that the frequency of RLS among chronic hemodialysis patients is 18.6% and RLS leads to physical life quality disturbances.
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Affiliation(s)
- R Kutlu
- Department of Family Medicine, Necmettin Erbakan University Meram Faculty of Medical, Konya, Turkey
| | - N Y Selcuk
- Department of Nephrology, Necmettin Erbakan University Meram Faculty of Medical, Konya, Turkey
| | - S Sayin
- Department of Family Medicine, Necmettin Erbakan University Meram Faculty of Medical, Konya, Turkey
| | - O Kal
- Department of Nephrology, Faculty of Medical, Baskent University, Konya, Turkey
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Engin MS, Sayin S, Cay S. Utilization of transport efficacy of novel calix[4]arene-embedded polymer inclusion membrane towards trace metals. J INCL PHENOM MACRO 2018. [DOI: 10.1007/s10847-018-0831-z] [Citation(s) in RCA: 5] [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] [Indexed: 11/29/2022]
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20
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
| | - Mehmet Soner Engin
- Department of Food Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
| | - Serkan Eymur
- Department of Energy Systems Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
| | - Seydahmet Çay
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
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21
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Cay S, Sayin S, Engin MS, Eymur S. Preparation and Characterization of Calix[4]aren-immobilized Magnetic Microcapsule and Its Application in Heavy Metal Removal. Polycycl Aromat Compd 2017. [DOI: 10.1080/10406638.2017.1363063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Seydahmet Cay
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Güre, Giresun, Turkey
| | - Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Güre, Giresun, Turkey
| | - Mehmet Soner Engin
- Department of Food Engineering, Faculty of Engineering, Giresun University, Güre, Giresun, Turkey
| | - Serkan Eymur
- Department of Energy Systems Engineering, Faculty of Engineering, Giresun University, Güre, Giresun, Turkey
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22
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Kurzątkowska K, Sayin S, Yilmaz M, Radecka H, Radecki J. Gold Electrodes Modified with Calix[4]arene for Electrochemical Determination of Dopamine in the Presence of Selected Neurotransmitters. Sensors (Basel) 2017; 17:s17061368. [PMID: 28608815 PMCID: PMC5492125 DOI: 10.3390/s17061368] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/01/2017] [Accepted: 06/07/2017] [Indexed: 11/16/2022]
Abstract
Here, we present an electrochemical sensor based on gold electrodes modified with calix[4]arene functionalized with carboxypiperidino groups at the upper rim. It has been demonstrated that these groups are involved in a complex formation with dopamine (DA) on the surface of gold electrodes. The supramolecular complex calix[4]arene–DA created on the gold electrode surface has been characterized electrochemically and the measuring conditions have been optimized. The presented sensor displayed a detection limit in the pM range. The DA determination was performed successfully in the presence of ascorbic acid, uric acid and selected neurotransmitters.
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Affiliation(s)
- Katarzyna Kurzątkowska
- Department of Biosensors, Institute of Animal Reproduction and Food Research Polish Academy of Science, Tuwima 10 Street, Olsztyn 10-748, Poland.
| | - Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun-28200, Turkey.
| | - Mustafa Yilmaz
- Department of Chemistry, Selcuk University, Konya 42100, Turkey.
| | - Hanna Radecka
- Department of Biosensors, Institute of Animal Reproduction and Food Research Polish Academy of Science, Tuwima 10 Street, Olsztyn 10-748, Poland.
| | - Jerzy Radecki
- Department of Biosensors, Institute of Animal Reproduction and Food Research Polish Academy of Science, Tuwima 10 Street, Olsztyn 10-748, Poland.
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23
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Dogan V, Sayin S, Uyanik A, Yilmaz M. Functional Group Effects of New Calixarene Derivatives on Catalytic and Enantioselective Behavior of Lipase. Polycycl Aromat Compd 2017. [DOI: 10.1080/10406638.2017.1326949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Vildan Dogan
- Department of Chemistry, Selcuk University, Konya, Turkey
| | - Serkan Sayin
- Department of Environmental Engineering, Giresun University, Giresun, Turkey
| | - Arzu Uyanik
- Department of Chemistry, Selcuk University, Konya, Turkey
| | - Mustafa Yilmaz
- Department of Chemistry, Selcuk University, Konya, Turkey
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24
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Sayin S, Yilmaz M. Synthesis of environmentally friendly, efficient and highly recyclable Lewis acid-type calix[4]arene catalysts containing flexible or bulky groups for the Mannich reaction. RSC Adv 2017. [DOI: 10.1039/c6ra28290c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two new calix[4]arene-based Lewis acid-type catalysts containing flexible and bulky groups (2 and 3) were successfully synthesized.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering
- Faculty of Engineering
- Giresun University
- Giresun-28200
- Turkey
| | - Mustafa Yilmaz
- Department of Chemistry
- Selcuk University
- Konya-42075
- Turkey
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25
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Engin MS, Cay S, Sayin S, Eymur S, Sardohan Koseoglu T. Preparation of calix[4]arene-embedded polysulphone membranes, and utilisation of its Cr(VI) transport efficiency. Supramol Chem 2016. [DOI: 10.1080/10610278.2016.1267859] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mehmet Soner Engin
- Faculty of Engineering, Department of Food Engineering, Giresun University, Giresun, Turkey
| | - Seydahmet Cay
- Faculty of Engineering, Department of Environmental Engineering, Giresun University, Giresun, Turkey
| | - Serkan Sayin
- Faculty of Engineering, Department of Environmental Engineering, Giresun University, Giresun, Turkey
| | - Serkan Eymur
- Faculty of Engineering, Department of Energy Systems Engineering, Giresun University, Giresun, Turkey
| | - Tugba Sardohan Koseoglu
- Faculty of Artsand Science, Department of Chemistry, Suleyman Demirel University, Isparta, Turkey
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26
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Affiliation(s)
- Elif Ozyilmaz
- Department of Biochemistry, Selcuk University, Konya, Turkey
| | - Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
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Sayin S, Yildiz HB, Eymur S. Synthesis of Various Calix[4]arene Derivatives with Mercaptoalkyl Chains and Their Application in Removing Cr(VI) from Aqueous Solution. Polycycl Aromat Compd 2016. [DOI: 10.1080/10406638.2016.1169193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
| | - Huseyin Bekir Yildiz
- Department of Materials Science and Nanotechnology Engineering, KTO Karatay University, Konya, Turkey
| | - Serkan Eymur
- Department of Energy Systems Engineering, Faculty of Engineering, Giresun University, Giresun, Turkey
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28
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Yuva-Aydemir Y, Xu XL, Aydemir O, Gascon E, Sayin S, Zhou W, Hong Y, Gao FB. Downregulation of the Host Gene jigr1 by miR-92 Is Essential for Neuroblast Self-Renewal in Drosophila. PLoS Genet 2015; 11:e1005264. [PMID: 26000445 PMCID: PMC4441384 DOI: 10.1371/journal.pgen.1005264] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 05/05/2015] [Indexed: 11/18/2022] Open
Abstract
Intragenic microRNAs (miRNAs), located mostly in the introns of protein-coding genes, are often co-expressed with their host mRNAs. However, their functional interaction in development is largely unknown. Here we show that in Drosophila, miR-92a and miR-92b are embedded in the intron and 3'UTR of jigr1, respectively, and co-expressed with some jigr1 isoforms. miR-92a and miR-92b are highly expressed in neuroblasts of larval brain where Jigr1 expression is low. Genetic deletion of both miR-92a and miR-92b demonstrates an essential cell-autonomous role for these miRNAs in maintaining neuroblast self-renewal through inhibiting premature differentiation. We also show that miR-92a and miR-92b directly target jigr1 in vivo and that some phenotypes due to the absence of these miRNAs are partially rescued by reducing the level of jigr1. These results reveal a novel function of the miR-92 family in Drosophila neuroblasts and provide another example that local negative feedback regulation of host genes by intragenic miRNAs is essential for animal development.
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Affiliation(s)
- Yeliz Yuva-Aydemir
- Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Xia-Lian Xu
- Gladstone Institute of Neurological Disease, San Francisco, California, United States of America
| | - Ozkan Aydemir
- Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Eduardo Gascon
- Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Serkan Sayin
- Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Wenke Zhou
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Yang Hong
- Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Fen-Biao Gao
- Department of Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
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29
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Sayin S, Azak H, Yildiz HB, Camurlu P, Akkus GU, Toppare L, Ersoz M. Calixarene assembly with enhanced photocurrents using P(SNS-NH2)/CdS nanoparticle structure modified Au electrode systems. Phys Chem Chem Phys 2015; 17:19911-8. [DOI: 10.1039/c5cp01932j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two novel calix[n]arene-adorned gold electrodes producing high photocurrent intensities were successfully constructed.
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Affiliation(s)
- Serkan Sayin
- Department of Environmental Engineering
- Faculty of Engineering
- Giresun University
- Giresun-28200
- Turkey
| | - Hacer Azak
- Department of Chemistry
- Karamanoglu Mehmetbey University
- 70100 Karaman
- Turkey
| | - Huseyin Bekir Yildiz
- Department of Materials Science and Nanotechnology Engineering
- KTO Karatay University
- 42020 Konya
- Turkey
| | - Pinar Camurlu
- Department of Chemistry
- Akdeniz University
- 07058 Antalya
- Turkey
| | - Gulderen Uysal Akkus
- Department of Chemistry
- Faculty of Art and Science
- Afyon Kocatepe University
- Afyonkarahisar
- Turkey
| | - Levent Toppare
- The Center for Solar Energy Research and Application (GUNAM)
- Middle East Technical University
- Ankara 06800
- Turkey
- Department of Polymer Science and Technology
| | - Mustafa Ersoz
- Department of Chemistry
- Selcuk University
- 42075 Konya
- Turkey
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30
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Gokoglan TC, Soylemez S, Kesik M, Unay H, Sayin S, Yildiz HB, Cirpan A, Toppare L. A novel architecture based on a conducting polymer and calixarene derivative: its synthesis and biosensor construction. RSC Adv 2015. [DOI: 10.1039/c5ra03933a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
An amperometric biosensor based on a selenium comprising conducting polymer and newly synthesized calixarene derivative with gold nanoparticles was constructed for the detection of glucose.
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Affiliation(s)
| | - Saniye Soylemez
- Department of Chemistry
- Middle East Technical University
- Ankara 06800
- Turkey
| | - Melis Kesik
- Department of Chemistry
- Middle East Technical University
- Ankara 06800
- Turkey
| | - Hande Unay
- Department of Polymer Science and Technology
- Middle East Technical University
- Ankara 06800
- Turkey
| | - Serkan Sayin
- Department of Material Science and Nanotechnology Engineering
- KTO Karatay University
- Konya 42020
- Turkey
| | - Huseyin Bekir Yildiz
- Department of Material Science and Nanotechnology Engineering
- KTO Karatay University
- Konya 42020
- Turkey
| | - Ali Cirpan
- Department of Chemistry
- Middle East Technical University
- Ankara 06800
- Turkey
- Department of Polymer Science and Technology
| | - Levent Toppare
- Department of Chemistry
- Middle East Technical University
- Ankara 06800
- Turkey
- Department of Polymer Science and Technology
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31
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Sayin S, Ozbek C, Okur S, Yilmaz M. Preparation of the ferrocene-substituted 1,3-distal p-tert-butylcalix[4]arene based QCM sensors array and utilization of its gas-sensing affinities. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Akoz E, Sayin S, Kaplan S, Yilmaz M. Improvement of catalytic activity of lipase in the presence of calix[4]arene valeric acid or hydrazine derivative. Bioprocess Biosyst Eng 2014; 38:595-604. [DOI: 10.1007/s00449-014-1299-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 09/30/2014] [Indexed: 11/30/2022]
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33
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Sayin S, Yilmaz M. Brønsted acidic magnetic nano-Fe3O4-adorned calix[n]arene sulfonic acids: synthesis and application in the nucleophilic substitution of alcohols. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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34
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Yildiz HB, Kamaci M, Karaman M, Toppare L, Sayin S. Photoelectrochemical Biosensing Approach for Alcohol Determination by “Wiring” of Alcohol Oxidase Photonically with P(SNS-NH2)/AOx/CNT/[Ru(bpy)3]2+Modified Electrodes. Journal of Macromolecular Science, Part A 2014. [DOI: 10.1080/10601325.2014.893127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Affiliation(s)
- Serkan Sayin
- Department of Chemistry, Selcuk University, 42075-Konya, Turkey
| | - Serkan Eymur
- Department of Chemistry, Selcuk University, 42075-Konya, Turkey
| | - Mustafa Yilmaz
- Department of Chemistry, Selcuk University, 42075-Konya, Turkey
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36
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Sonmez B, Sayin S, Yalcinkaya EE, Seleci DA, Yildiz HB, Demirkol DO, Timur S. Calixarene modified montmorillonite: a novel design for biosensing applications. RSC Adv 2014. [DOI: 10.1039/c4ra11818a] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here we report the synthesis, characterization and application of calixarene (Calix) modified montmorillonite (Mt) as a platform for bio-applications such as biomolecule immobilization and biosensing technologies.
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Affiliation(s)
- Burak Sonmez
- Ege University Faculty of Science
- Biochemistry Department
- 35100 Bornova-Izmir, Turkey
| | - Serkan Sayin
- KTO Karatay University
- Department of Materials Science and Nanotechnology Engineering
- 42020 Konya, Turkey
| | | | - Didem Ag Seleci
- Ege University Faculty of Science
- Biochemistry Department
- 35100 Bornova-Izmir, Turkey
| | - Huseyin Bekir Yildiz
- KTO Karatay University
- Department of Materials Science and Nanotechnology Engineering
- 42020 Konya, Turkey
| | - Dilek Odaci Demirkol
- Ege University Faculty of Science
- Biochemistry Department
- 35100 Bornova-Izmir, Turkey
- Ege University
- Institute of Drug Abuse Toxicology &Pharmaceutical Sciences
| | - Suna Timur
- Ege University Faculty of Science
- Biochemistry Department
- 35100 Bornova-Izmir, Turkey
- Ege University
- Institute of Drug Abuse Toxicology &Pharmaceutical Sciences
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Sayin S, Yilmaz M. The synthesis of new calix[n]arene quaternary ammonium salts and investigation of their catalytic affinities for three component Mannich-type reactions in water. RSC Adv 2014. [DOI: 10.1039/c3ra43881c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sayin S, Akoz E, Yilmaz M. Enhanced catalysis and enantioselective resolution of racemic naproxen methyl ester by lipase encapsulated within iron oxide nanoparticles coated with calix[8]arene valeric acid complexes. Org Biomol Chem 2014; 12:6634-42. [DOI: 10.1039/c4ob01048e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, two types of nanoparticles have been used as additives for the encapsulation of Candida rugosa lipase via the sol–gel method.
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Affiliation(s)
- Serkan Sayin
- Department of Chemistry
- Selcuk University
- Konya-42075, Turkey
| | - Enise Akoz
- Department of Chemistry
- Selcuk University
- Konya-42075, Turkey
| | - Mustafa Yilmaz
- Department of Chemistry
- Selcuk University
- Konya-42075, Turkey
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Ozyilmaz E, Sayin S, Arslan M, Yilmaz M. Improving catalytic hydrolysis reaction efficiency of sol–gel-encapsulated Candida rugosa lipase with magnetic β-cyclodextrin nanoparticles. Colloids Surf B Biointerfaces 2014; 113:182-9. [DOI: 10.1016/j.colsurfb.2013.08.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 10/26/2022]
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Arslan M, Sayin S, Yilmaz M. Enantioselective sorption of some chiral carboxylic acids by various cyclodextrin-grafted iron oxide magnetic nanoparticles. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ozyilmaz E, Sayin S. Preparation of New Calix[4]arene-Immobilized Biopolymers for Enhancing Catalytic Properties of Candida rugosa Lipase by Sol–Gel Encapsulation. Appl Biochem Biotechnol 2013; 170:1871-84. [DOI: 10.1007/s12010-013-0308-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/22/2013] [Indexed: 11/30/2022]
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42
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Sayin S, Ozcan F, Yilmaz M. Two novel calixarene functionalized iron oxide magnetite nanoparticles as a platform for magnetic separation in the liquid–liquid/solid–liquid extraction of oxyanions. Materials Science and Engineering: C 2013; 33:2433-9. [DOI: 10.1016/j.msec.2013.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 01/17/2013] [Accepted: 02/04/2013] [Indexed: 10/27/2022]
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Ozyilmaz E, Sayin S. A magnetically separable biocatalyst for resolution of racemic naproxen methyl ester. Bioprocess Biosyst Eng 2013; 36:1803-6. [DOI: 10.1007/s00449-013-0941-3] [Citation(s) in RCA: 14] [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: 01/26/2013] [Accepted: 03/04/2013] [Indexed: 11/25/2022]
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Yildiz HB, Demirkol DO, Sayin S, Yilmaz M, Koysuren O, Kamaci M. New Amperometric Cholesterol Biosensors Using Poly(ethyleneoxide) Conducting Polymers. Journal of Macromolecular Science, Part A 2013. [DOI: 10.1080/10601325.2013.821921] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kurt M, Karabacak M, Okur S, Sayin S, Yilmaz M, Sundaraganesan N. Synthesis, FT-IR, FT-Raman, dispersive Raman and NMR spectroscopic study of a host molecule which potential applications in sensor devices. Spectrochim Acta A Mol Biomol Spectrosc 2012; 94:126-133. [PMID: 22522295 DOI: 10.1016/j.saa.2012.03.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 03/18/2012] [Accepted: 03/21/2012] [Indexed: 05/31/2023]
Abstract
The solid phase FT-IR, FT-Raman and dispersive Raman spectra of the host molecule which potential applications in sensor devices have been recorded in the region 400-4000 and 50-3500cm(-1), respectively. The spectra were interpreted in terms of fundamentals modes, combination and overtone bands. The structure of the molecule was optimized and the structural characteristics were determined by density functional theory (DFT) using B3LYP method with 6-31G(d) basis set. The vibrational frequencies were calculated for the studied molecule by DFT method, and compared with the experimental frequencies, which yield good agreement between observed and calculated frequencies. Finally the calculation results were applied to simulate infrared and Raman spectra of the compound. Obtained these spectra also showed good agreement with observed spectra. The dipole moment, linear polarizability and first hyperpolarizability values were also computed. The linear polarizability and first hyperpolarizability of the studied molecule indicate that the compound is a good candidate of nonlinear optical materials.
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Affiliation(s)
- M Kurt
- Department of Physics, Ahi Evran University, 40100 Kırşehir, Turkey.
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Sayin S, Gubbuk IH, Yilmaz M. Preparation of calix[4]arene-based sporopollenin and examination of its dichromate sorption ability. J INCL PHENOM MACRO 2012. [DOI: 10.1007/s10847-012-0152-6] [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: 10/28/2022]
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Samdanci ET, Firat C, Cakir E, Ak M, Sayin S, Nurkabul Z. The incidence of non-proliferative and precancerous lesions of reduction mammoplasty: evaluation of 273 cases. Eur Rev Med Pharmacol Sci 2011; 15:1207-1211. [PMID: 22165684] [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: 05/31/2023]
Abstract
BACKGROUND Reduction mammoplasty (RM) is one of the most commonly performed plastic surgery procedures to treat symptomatic macromasty or to correct asymmetry. Occult breast carcinomas were rarely defined in RM specimens. There are few studies aiming to define the incidence of non-proliferative and precancerous lesions. MATERIAL AND METHODS We evaluated the pathological findings of the RM specimens that have been submitted to our Center for the last 6 years (2005-2011). RESULTS A total of 273 cases with bilateral RM were enrolled to the study. Of them, 229 cases had pathological changes. Eight cases (2.9%) had atypical ductal/lobular hyperplasia. One case (0.3%) had lobular carcinoma in situ; however, no invasive breast carcinoma was detected. Other pathological findings included fibrocystic changes, fibrosis, adenosis, fibroadenoma (without complex features), mastitis and duct ectasia. CONCLUSIONS Pathological examination of the RM specimens is quite important to define the lesions precancerous of breast carcinoma. Unknown occult breast lesions could be identified and early interventions may be taken into account.
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Affiliation(s)
- E T Samdanci
- Plastic and Reconstructive Surgery Department, Inonu University School of Medicine, Malatya Turkey.
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Sayin S, Yilmaz M, Tavasli M. Syntheses of two diamine substituted 1,3-distal calix[4]arene-based magnetite nanoparticles for extraction of dichromate, arsenate and uranyl ions. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sayin S, Ozcan F, Yilmaz M. Preparation and Application of Calix[4]arene Derivatives Bearing Pyridinium Units-Grafted Magnetite Nanoparticles for Removal of Dichromate and Arsenate Anions. Journal of Macromolecular Science, Part A 2011. [DOI: 10.1080/10601325.2011.562466] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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