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Wang Z, Chen J, Ma H, Deng Y, Li Y, Geng L, Huang Y, Fan Y. A novel copper ion enhanced electrochemical DNA biosensor for the determination of epinephrine. Talanta 2024; 276:126274. [PMID: 38788379 DOI: 10.1016/j.talanta.2024.126274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 04/12/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
A novel electrochemical biosensor was developed for the detection of epinephrine (EP) by immobilizing double-strand DNA (dsDNA) bound with copper ions on a gold electrode (Cu2+/dsDNA/MCH/AuE). The electrochemical behavior of EP at Cu2+/dsDNA/MCH/AuE was examined, and the results demonstrated a significant enhancement in the electrocatalytic oxidation peak current of EP due to the formation of a stable G-Cu(II)-G sandwich structure between Cu2+ and guanine at the modified electrode. The modification process of the electrode was characterized by scanning electron microscopy, infrared spectroscopy, electrochemical impedance spectroscopy, and differential pulse voltammetry. A study on the effect of pH in phosphate buffer solution on the electrochemical oxidation of EP indicated that the catalytic oxidation process was pH-dependent. A plot of catalytic current versus EP concentration exhibited a dual-linear relationship within two ranges: 1.0-12.5 μM and 12.5-1000.0 μM, with correlation coefficients of 0.995 and 0.997, respectively. The limit of detection was determined to be 47 nM (S/N = 3). According to the calculated Hill coefficient (0.99), it can be concluded that the electrocatalytic process followed the Michaelis-Menten kinetic mechanism. The maximum catalytic current Im was 25 μA, while the apparent Michaelis-Menten constant Km was 1.425 mM. These findings indicated excellent electrocatalytic activity of the modified electrode towards oxidation of EP. The developed biosensor successfully detected EP in spiked mouse serum as well as epinephrine hydrochloride injection with high selectivity, sensitivity, stability, and accuracy.
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Affiliation(s)
- Zhenbo Wang
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Jing Chen
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Hua Ma
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Yaru Deng
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Yafei Li
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Lijie Geng
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China
| | - Yu Huang
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China; Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China; Collaborative Innovation Center for Ningxia Characteristic Traditional Chinese Medicine by Ningxia Hui Autonomous Region & Education Ministry of P.R. China, PR China; Ningxia Characteristic Traditional Chinese Medicine Modern Engineering and Technique Research Center, Ningxia Key Laboratory of Drug Development and Generic Drug Research, Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Yinchuan, 750004, PR China.
| | - Yanru Fan
- School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, PR China; Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area Ministry of Education, Ningxia Medical University, Yinchuan, 750004, PR China; Collaborative Innovation Center for Ningxia Characteristic Traditional Chinese Medicine by Ningxia Hui Autonomous Region & Education Ministry of P.R. China, PR China; Ningxia Characteristic Traditional Chinese Medicine Modern Engineering and Technique Research Center, Ningxia Key Laboratory of Drug Development and Generic Drug Research, Key Laboratory of Ningxia Ethnomedicine Modernization, Ministry of Education, Yinchuan, 750004, PR China.
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Farrokhpour H, Mokhtari N. Intermolecular hydrogen bonding in DNA base pairs interacting with different numbers of bare and hydrated Li +: NBO, QTAIM, and computational spectroscopic studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123896. [PMID: 38266601 DOI: 10.1016/j.saa.2024.123896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 01/11/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
In this study, the effect of different numbers of Li+ interacting with various sites of DNA base pairs (adenine-thymine (AT) and cytosine-guanine (GC)) on the base pair structures, the strength of hydrogen bonding between the bases, and spectroscopic properties (IR and absorption spectra) of the base pairs was investigated. Two quantum computational analyses, the natural bonding orbitals (NBO) and the quantum theory of atoms in molecules (QTAIM), were used to follow the change in the strength of hydrogen bonds between the bases in each pair. The type of base pair's site interacting with Li+ showed different effects on the change in the strength of the hydrogen bonds between the bases. The IR and absorption spectra of the lithiated base pairs were calculated and compared with those of bare base pairs. This comparison provided the changes in the spectra as a fingerprint for the structural identification of different lithiated base pairs. Also, the determination of the change in the strength of hydrogen bonds in the lithiated base pairs compared to their bare base pairs. In the other part of this study, the effect of the hydration of the attached Li+ in the structure of lithiated base pairs on the strength of their hydrogen bonds and spectra was investigated.
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Affiliation(s)
- Hossein Farrokhpour
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Nikoo Mokhtari
- Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Iran
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3
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Bomberg M, Miettinen H. Anionic nanocellulose as competing agent in microbial DNA extraction from mine process samples. J Microbiol Methods 2023; 215:106850. [PMID: 37907119 DOI: 10.1016/j.mimet.2023.106850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/04/2023] [Accepted: 10/25/2023] [Indexed: 11/02/2023]
Abstract
Microorganisms in flotation and minerals processing may significantly affect the grade and yield of metal concentrates. However, studying the phenomena requires working techniques to detach microorganisms and their DNA from mineral particles to which they strongly adhere. We developed a new method utilizing the competitive properties of anionic nanocellulose to block sorption of DNA to and detach microbial cells from mineral particles from ore processing. In general, up to one ng DNA mL-1 sample was obtained with the custom anionic nanocellulose method (CM) compared to DNA amounts below the Qubit assay's detection limit for extractions with a commercial kit (KIT). Similarly, 0.5-4 orders of magnitude more bacterial 16S and fungal 5.8S rRNA gene copies were detected by qPCR from CM treated samples compared to KIT extractions. A clear difference in the detected microbial community structure between CM and KIT extracted samples was also observed. Commercial kits optimized for mineral soils are easy to use and time efficient but may miss a considerable part of the microbial communities. A competing agent such as anionic nanocellulose may decrease the interaction between microorganisms or their DNA and minerals and provide a comprehensive view into the microbial communities in mineral processing environments.
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Affiliation(s)
- Malin Bomberg
- VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT, Finland.
| | - Hanna Miettinen
- VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT, Finland
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4
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Meddeb ER, Trea F, Djekoun A, Nasri H, Ouali K. Subchronic toxicity of iron-selenium nanoparticles on oxidative stress response, histopathological, and nuclear damage in amphibian larvae Rana saharica. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:112321-112335. [PMID: 37831248 DOI: 10.1007/s11356-023-30063-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/20/2023] [Indexed: 10/14/2023]
Abstract
In this work, we evaluated the subchronic toxicity of FeSe nanoparticles (NPs) in tadpoles of Rana saharica. Tadpoles were exposed for 1-3 weeks to FeSe NPs at 5 mg/L and 100 mg/L rates. Parameters of oxidative stress were measured in whole larvae, and the micronucleus test was performed on circulating blood erythrocytes. We noted a disturbance of the detoxification systems. Enzymatic and non-enzymatic data showed that exposure to FeSe NPs involved a highly significant depletion of GSH, a significant increase in GST activity, and a lipid peroxidation associated with a highly significant increase in MDA. We also noted a neurotoxic effect characterized by a significant inhibition of AChE activity. A micronucleus test showed concentration-dependent DNA damage. This research reveals that these trace elements, in their nanoform, can cause significant neurotoxicity, histopathologic degeneration, cellular and metabolic activity, and genotoxic consequences in Rana larvae.
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Affiliation(s)
- El Rym Meddeb
- Faculty of Sciences, Laboratory of Environmental Biomonitoring, Badji-Mokhtar University, Annaba, Algeria
| | - Fouzia Trea
- Faculty of Sciences, Laboratory of Environmental Biomonitoring, Badji-Mokhtar University, Annaba, Algeria
| | - Abdelmalik Djekoun
- Faculty of Sciences, Materials Physics Laboratory, Badji-Mokhtar University, Annaba, Algeria
| | - Hichem Nasri
- Faculty of Natural and Life Sciences, Ecotoxicology Laboratory, Chadli Bendjedid University, ElTarf, Algeria
| | - Kheireddine Ouali
- Environmental Bio Surveillance, Department of Biology, Faculty of Sciences, Laboratory of Environmental Biomonitoring Badji-Mokhtar University, BP 12 Sidi Amar, Annaba, Algeria.
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Rodriguez A, Gandavadi D, Mathivanan J, Song T, Madhanagopal BR, Talbot H, Sheng J, Wang X, Chandrasekaran AR. Self-Assembly of DNA Nanostructures in Different Cations. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2300040. [PMID: 37264756 PMCID: PMC10538431 DOI: 10.1002/smll.202300040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/10/2023] [Indexed: 06/03/2023]
Abstract
The programmable nature of DNA allows the construction of custom-designed static and dynamic nanostructures, and assembly conditions typically require high concentrations of magnesium ions that restricts their applications. In other solution conditions tested for DNA nanostructure assembly, only a limited set of divalent and monovalent ions are used so far (typically Mg2+ and Na+ ). Here, we investigate the assembly of DNA nanostructures in a wide variety of ions using nanostructures of different sizes: a double-crossover motif (76 bp), a three-point-star motif (~134 bp), a DNA tetrahedron (534 bp) and a DNA origami triangle (7221 bp). We show successful assembly of a majority of these structures in Ca2+ , Ba2+ , Na+ , K+ and Li+ and provide quantified assembly yields using gel electrophoresis and visual confirmation of a DNA origami triangle using atomic force microscopy. We further show that structures assembled in monovalent ions (Na+ , K+ and Li+ ) exhibit up to a 10-fold higher nuclease resistance compared to those assembled in divalent ions (Mg2+ , Ca2+ and Ba2+ ). Our work presents new assembly conditions for a wide range of DNA nanostructures with enhanced biostability.
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Affiliation(s)
- Arlin Rodriguez
- The RNA Institute, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Dhanush Gandavadi
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Johnsi Mathivanan
- Department of Chemistry, University of Albany, State University of New York, Albany, NY 12222, USA
| | - Tingjie Song
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | | | - Hannah Talbot
- The RNA Institute, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Jia Sheng
- Department of Chemistry, University of Albany, State University of New York, Albany, NY 12222, USA
| | - Xing Wang
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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6
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Lewis D, Setzler C, Goodwin PM, Thomas K, Branham M, Arrington CA, Petty JT. Interrupted DNA and Slow Silver Cluster Luminescence. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:10574-10584. [PMID: 37313118 PMCID: PMC10258842 DOI: 10.1021/acs.jpcc.3c01050] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 05/16/2023] [Indexed: 06/15/2023]
Abstract
A DNA-silver cluster conjugate is a hierarchical chromophore with a partly reduced silver core embedded within the DNA nucleobases that are covalently linked by the phosphodiester backbone. Specific sites within a polymeric DNA can be targeted to spectrally tune the silver cluster. Here, the repeated (C2A)6 strand is interrupted with a thymine, and the resulting (C2A)2-T-(C2A)4 forms only Ag106+, a chromophore with both prompt (∼1 ns) green and sustained (∼102 μs) red luminescence. Thymine is an inert placeholder that can be removed, and the two fragments (C2A)2 and (C2A)4 also produce the same Ag106+ adduct. In relation to (C2A)2T(C2A)4, the (C2A)2 + (C2A)4 pair is distinguished because the red Ag106+ luminescence is ∼6× lower, relaxes ∼30% faster, and is quenched ∼2× faster with O2. These differences suggest that a specific break in the phosphodiester backbone can regulate how a contiguous vs broken scaffold wraps and better protects its cluster adduct.
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Affiliation(s)
- David Lewis
- Department
of Chemistry, Furman University, Greenville, South Carolina 29163, United States
| | - Caleb Setzler
- Department
of Chemistry, Furman University, Greenville, South Carolina 29163, United States
| | - Peter M. Goodwin
- Center
for Integrated Nanotechnologies, Mail Stop K771, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Kirsten Thomas
- Department
of Chemistry, Furman University, Greenville, South Carolina 29163, United States
| | - Makayla Branham
- Department
of Chemistry, Furman University, Greenville, South Carolina 29163, United States
| | - Caleb A. Arrington
- Department
of Chemistry, Wofford College, Spartanburg, South Carolina 29303, United States
| | - Jeffrey T. Petty
- Department
of Chemistry, Furman University, Greenville, South Carolina 29163, United States
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7
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Rodriguez A, Gandavadi D, Mathivanan J, Song T, Madhanagopal BR, Talbot H, Sheng J, Wang X, Chandrasekaran AR. Self-assembly of DNA nanostructures in different cations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.04.539416. [PMID: 37205441 PMCID: PMC10187274 DOI: 10.1101/2023.05.04.539416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The programmable nature of DNA allows the construction of custom-designed static and dynamic nanostructures, and assembly conditions typically require high concentrations of magnesium ions which restricts their applications. In other solution conditions tested for DNA nanostructure assembly, only a limited set of divalent and monovalent ions have been used so far (typically Mg 2+ and Na + ). Here, we investigate the assembly of DNA nanostructures in a wide variety of ions using nanostructures of different sizes: a double-crossover motif (76 bp), a three-point-star motif (∼134 bp), a DNA tetrahedron (534 bp) and a DNA origami triangle (7221 bp). We show successful assembly of a majority of these structures in Ca 2+ , Ba 2+ , Na + , K + and Li + and provide quantified assembly yields using gel electrophoresis and visual confirmation of a DNA origami triangle using atomic force microscopy. We further show that structures assembled in monovalent ions (Na + , K + and Li + ) exhibit up to a 10-fold higher nuclease resistance compared to those assembled in divalent ions (Mg 2+ , Ca 2+ and Ba 2+ ). Our work presents new assembly conditions for a wide range of DNA nanostructures with enhanced biostability.
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Affiliation(s)
- Arlin Rodriguez
- The RNA Institute, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Dhanush Gandavadi
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Johnsi Mathivanan
- Department of Chemistry, University of Albany, State University of New York, Albany, NY 12222, USA
| | - Tingjie Song
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | | | - Hannah Talbot
- The RNA Institute, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Jia Sheng
- Department of Chemistry, University of Albany, State University of New York, Albany, NY 12222, USA
| | - Xing Wang
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Holonyak Micro and Nanotechnology Lab (HMNTL), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carl R. Woese Institute for Genomic Biology (IGB), University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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8
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Zhou M, Xu T, Xia K, Gao H, Li W, Zhai T, Gu H. Small DNAs That Specifically and Tightly Bind Transition Metal Ions. J Am Chem Soc 2023; 145:8776-8780. [PMID: 37052572 DOI: 10.1021/jacs.3c01276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Specific DNA-binding to metal ions is a long-standing fundamental research topic with great potential to transform into nano/biotechnology and therapeutics applications. Herein, based on the mobility change of DNA in denaturing gels, we develop a selection strategy to discover a series of 40-45 nt small DNAs that can bind Zn2+ and Cd2+ specifically and tightly. The Zn2+- and Cd2+-bound DNA complexes can even tolerate harsh denaturing conditions of 8 M urea and 50 mM EDTA. The discovery not only exposes a new class of transition metal ion-binding DNAs but also provides potentially a new tool for targeting drug therapies based on metal ions.
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Affiliation(s)
- Mo Zhou
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
- Center for Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 200433, China
| | - Tianbin Xu
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
| | - Kai Xia
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
| | - Haiqing Gao
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
| | - Wei Li
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
| | - Tingting Zhai
- Department of Chemical Biology, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, National Center for Translational Medicine, and School of Global Health, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hongzhou Gu
- Fudan University Shanghai Cancer Center, and the Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Shanghai Stomatological Hospital, Fudan University, Shanghai 200032, China
- Center for Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 200433, China
- Department of Chemical Biology, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, National Center for Translational Medicine, and School of Global Health, Shanghai Jiao Tong University, Shanghai 200240, China
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D. NAGAJOTHİ M, MAHESWARİ J. Biosynthesis and Characterization of Co3O4NPs Utilizing Prickly Pear Fruit Extract and its Biological Activities. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2022. [DOI: 10.18596/jotcsa.993633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
In the current research, there is a low level of research and information about the interaction of cobalt oxide nanoparticles (Co3O4NPs) in biological systems. This research creates a very simple and cost-effective preparation of cobalt oxide nanoparticles by using prickly pear fruit extract as a reducing agent, which may be further used for biological applications like antimicrobial, antioxidant, DNA interaction and in-vitro anticancer activity. The use of prickly pear fruit extract acts as a good reducing agent and is responsible for easy preparation and reducing the toxicity of cobalt oxide nanoparticles. The fabricated biogenic nanoparticles were confirmed by microscopic and spectroscopic analytical techniques like Ultra Violet-Visible spectrometer, Fourier transforms infrared spectrometer (FTIR), X-ray Diffraction Method (XRD), Energy-dispersive X-ray spectroscopy (EDS), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The average size of the synthesized nanoparticles is 36.24 nm. In the MTT assay, the prepared cobalt oxide NPs haspotential mechanisms of cytotoxicity and in-vitro anticancer activity in Hepatocellular carcinoma cancer cells (HepG2). The microbial activities like antibacterial and antifungal studies of the biosynthesized nanoparticles were performed by the Disc method. The Co3O4NPs with DNA interaction were examined by UV-Visible and fluorescence spectroscopic methods. The binding constant value of biogenic Co3O4NPs with CT-DNA was observed by UV-Visible spectroscopy with a result of 2.57x105mol-1. The binding parameters and quenching constants were observed by fluorescence spectroscopic methods having values of Ksv=7.1x103, kq=7.1x108, Ka=3.47.1x105, n=0.9119. From the findings, Co3O4NPs may be utilized as a medicinal aid for their antibacterial, antifungal, antioxidant, DNA binding and in-vitro anticancer activities.
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Davies TC. The position of geochemical variables as causal co-factors of diseases of unknown aetiology. SN APPLIED SCIENCES 2022; 4:236. [PMID: 35909942 PMCID: PMC9326422 DOI: 10.1007/s42452-022-05113-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 07/06/2022] [Indexed: 11/28/2022] Open
Abstract
Abstract The term diseases of unknown aetiology (DUA) or idiopathic diseases is used to describe diseases that are of uncertain or unknown cause or origin. Among plausible geoenvironmental co-factors in causation of DUA, this article focusses on the entry of trace elements, including metals and metalloids into humans, and their involvement in humoral and cellular immune responses, representing potentially toxic agents with implications as co-factors for certain DUA. Several trace elements/metals/metalloids (micronutrients) play vital roles as co-factors for essential enzymes and antioxidant molecules, thus, conferring protection against disease. However, inborn errors of trace element/metal/metalloid metabolisms can occur to produce toxicity, such as when there are basic defects in the element transport mechanism. Ultimately, it is the amount of trace element, metal or metalloid that is taken up, its mode of accumulation in human tissues, and related geomedical attributes such as the chemical form and bioavailability that decisively determine whether the exerted effects are toxic or beneficial. Several case descriptions of DUA that are common worldwide are given to illustrate our knowledge so far of how trace element/metal/metalloid interactions in the immune system may engender its dysregulation and be implicated as causal co-factors of DUA. Article highlights The importance of a proper understanding of geochemical perturbations in human metabolisms is emphasisedIt is proferred that such an understanding would aid greatly in the decipherment of diseases of unknown aetiology (DUA)The thesis presented may pave the way towards better diagnosis and therapy of DUA.
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Affiliation(s)
- Theophilus C. Davies
- Present Address: Faculty of Natural Sciences, Mangosuthu University of Technology, 511 Mangosuthu Highway, 4031, KwaZulu Natal, South Africa
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11
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Yaraki MT, Zahed Nasab S, Zare I, Dahri M, Moein Sadeghi M, Koohi M, Tan YN. Biomimetic Metallic Nanostructures for Biomedical Applications, Catalysis, and Beyond. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00285] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | - Shima Zahed Nasab
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran 143951561, Iran
| | - Iman Zare
- Research and Development Department, Sina Medical Biochemistry Technologies Co. Ltd., Shiraz 7178795844, Iran
| | - Mohammad Dahri
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Mohammad Moein Sadeghi
- Student Research Committee, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz 71345, Iran
| | - Maedeh Koohi
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Islamic Republic of Iran
| | - Yen Nee Tan
- Faculty of Science, Agriculture and Engineering, Newcastle University, Newcastle Upon Tyne NE1 7RU, U.K
- Newcastle Research and Innovation Institute, Newcastle University in Singapore, 80 Jurong East Street 21, No. 05-04, 609607, Singapore
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12
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fingeRNAt—A novel tool for high-throughput analysis of nucleic acid-ligand interactions. PLoS Comput Biol 2022; 18:e1009783. [PMID: 35653385 PMCID: PMC9197077 DOI: 10.1371/journal.pcbi.1009783] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 06/14/2022] [Accepted: 05/06/2022] [Indexed: 11/19/2022] Open
Abstract
Computational methods play a pivotal role in drug discovery and are widely applied in virtual screening, structure optimization, and compound activity profiling. Over the last decades, almost all the attention in medicinal chemistry has been directed to protein-ligand binding, and computational tools have been created with this target in mind. With novel discoveries of functional RNAs and their possible applications, RNAs have gained considerable attention as potential drug targets. However, the availability of bioinformatics tools for nucleic acids is limited. Here, we introduce fingeRNAt—a software tool for detecting non-covalent interactions formed in complexes of nucleic acids with ligands. The program detects nine types of interactions: (i) hydrogen and (ii) halogen bonds, (iii) cation-anion, (iv) pi-cation, (v) pi-anion, (vi) pi-stacking, (vii) inorganic ion-mediated, (viii) water-mediated, and (ix) lipophilic interactions. However, the scope of detected interactions can be easily expanded using a simple plugin system. In addition, detected interactions can be visualized using the associated PyMOL plugin, which facilitates the analysis of medium-throughput molecular complexes. Interactions are also encoded and stored as a bioinformatics-friendly Structural Interaction Fingerprint (SIFt)—a binary string where the respective bit in the fingerprint is set to 1 if a particular interaction is present and to 0 otherwise. This output format, in turn, enables high-throughput analysis of interaction data using data analysis techniques. We present applications of fingeRNAt-generated interaction fingerprints for visual and computational analysis of RNA-ligand complexes, including analysis of interactions formed in experimentally determined RNA-small molecule ligand complexes deposited in the Protein Data Bank. We propose interaction fingerprint-based similarity as an alternative measure to RMSD to recapitulate complexes with similar interactions but different folding. We present an application of interaction fingerprints for the clustering of molecular complexes. This approach can be used to group ligands that form similar binding networks and thus have similar biological properties. The fingeRNAt software is freely available at https://github.com/n-szulc/fingeRNAt.
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13
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Arruda MAZ, de Jesus JR, Blindauer CA, Stewart AJ. Speciomics as a concept involving chemical speciation and omics. J Proteomics 2022; 263:104615. [PMID: 35595056 DOI: 10.1016/j.jprot.2022.104615] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/29/2022] [Accepted: 05/03/2022] [Indexed: 10/18/2022]
Abstract
The study of chemical speciation and the refinement and expansion of omics-based methods are both consolidated and highly active research fields. Although well established, such fields are extremely dynamic and are driven by the emergence of new strategies and improvements in instrumentation. In the case of omics-based studies, subareas including lipidomics, proteomics, metallomics, metabolomics and foodomics have emerged. Here, speciomics is being proposed as an "umbrella" term, that incorporates all of these subareas, to capture studies where the evaluation of chemical species is carried out using omics approaches. This paper contextualizes both speciomics and the speciome, and reviews omics applications used for species identification through examination of proteins, metalloproteins, metabolites, and nucleic acids. In addition, some implications from such studies and a perspective for future development of this area are provided. SIGNIFICANCE: The synergic effect between chemical speciation and omics is highlighted in this work, demonstrating an emerging area of research with a multitude of possibilities in terms of applications and further developments. This work not only defines and contextualizes speciomics and individual speciomes, but also demonstrates with some examples the great potential of this new interdisciplinary area of research.
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Affiliation(s)
- Marco Aurélio Zezzi Arruda
- Spectrometry, Sample Preparation and Mechanization Group, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil; National Institute of Science and Technology for Bioanalytics, Institute of Chemistry, University of Campinas - Unicamp, P.O. Box 6154, Campinas, SP 13083-970, Brazil.
| | - Jemmyson Romário de Jesus
- Research Laboratory in bionanomaterials, LPbio, Chemistry Department, Federal University of Viçosa, UFV, Viçosa, Minas Gerais, Brazil
| | | | - Alan James Stewart
- School of Medicine, University of St Andrews, North Haugh, St Andrews KY16 9TF, United Kingdom
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14
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Buades AB, Pereira LCJ, Vieira BJC, Cerdeira AC, Waerenborgh JC, Pinheiro T, Alves de Matos AP, Pinto CG, Guerreiro J, Mendes F, Valic S, Teixidor F, Vinas C, Marques FM. Mössbauer effect using 57Fe-ferrabisdicarbollide ([o-57FESAN]-): a glance into the potential of a low-dose approach for glioblastoma radiotherapy. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01513c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although a variety of cancers is initially susceptible to chemotherapy, they eventually develop multi-drug resistance. To overcome this situation, more effective and selective treatments are necessary by using anti-tumour agents...
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15
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Pillars and Gaps of S-Nitrosylation-Dependent Epigenetic Regulation in Physiology and Cancer. Life (Basel) 2021; 11:life11121424. [PMID: 34947954 PMCID: PMC8704633 DOI: 10.3390/life11121424] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 11/17/2022] Open
Abstract
Nitric oxide (NO) is a diffusible signaling molecule produced by three isoforms of nitric oxide synthase, which release NO during the metabolism of the amino acid arginine. NO participates in pathophysiological responses of many different tissues, inducing concentration-dependent effect. Indeed, while low NO levels generally have protective effects, higher NO concentrations induce cytotoxic/cytostatic actions. In recent years, evidences have been accumulated unveiling S-nitrosylation as a major NO-dependent post-translational mechanism ruling gene expression. S-nitrosylation is a reversible, highly regulated phenomenon in which NO reacts with one or few specific cysteine residues of target proteins generating S-nitrosothiols. By inducing this chemical modification, NO might exert epigenetic regulation through direct effects on both DNA and histones as well as through indirect actions affecting the functions of transcription factors and transcriptional co-regulators. In this light, S-nitrosylation may also impact on cancer cell gene expression programs. Indeed, it affects different cell pathways and functions ranging from the impairment of DNA damage repair to the modulation of the activity of signal transduction molecules, oncogenes, tumor suppressors, and chromatin remodelers. Nitrosylation is therefore a versatile tool by which NO might control gene expression programs in health and disease.
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16
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Smethurst DGJ, Shcherbik N. Interchangeable utilization of metals: New perspectives on the impacts of metal ions employed in ancient and extant biomolecules. J Biol Chem 2021; 297:101374. [PMID: 34732319 PMCID: PMC8633580 DOI: 10.1016/j.jbc.2021.101374] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 02/08/2023] Open
Abstract
Metal ions provide considerable functionality across biological systems, and their utilization within biomolecules has adapted through changes in the chemical environment to maintain the activity they facilitate. While ancient earth's atmosphere was rich in iron and manganese and low in oxygen, periods of atmospheric oxygenation significantly altered the availability of certain metal ions, resulting in ion replacement within biomolecules. This adaptation mechanism has given rise to the phenomenon of metal cofactor interchangeability, whereby contemporary proteins and nucleic acids interact with multiple metal ions interchangeably, with different coordinated metals influencing biological activity, stability, and toxic potential. The ability of extant organisms to adapt to fluctuating metal availability remains relevant in a number of crucial biomolecules, including the superoxide dismutases of the antioxidant defense systems and ribonucleotide reductases. These well-studied and ancient enzymes illustrate the potential for metal interchangeability and adaptive utilization. More recently, the ribosome has also been demonstrated to exhibit interchangeable interactions with metal ions with impacts on function, stability, and stress adaptation. Using these and other examples, here we review the biological significance of interchangeable metal ions from a new angle that combines both biochemical and evolutionary viewpoints. The geochemical pressures and chemical properties that underlie biological metal utilization are discussed in the context of their impact on modern disease states and treatments.
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Affiliation(s)
- Daniel G J Smethurst
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
| | - Natalia Shcherbik
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
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17
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Irawati W, Djojo ES, Kusumawati L, Yuwono T, Pinontoan R. Optimizing Bioremediation: Elucidating Copper Accumulation Mechanisms of Acinetobacter sp. IrC2 Isolated From an Industrial Waste Treatment Center. Front Microbiol 2021; 12:713812. [PMID: 34795645 PMCID: PMC8595058 DOI: 10.3389/fmicb.2021.713812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 09/20/2021] [Indexed: 01/31/2023] Open
Abstract
Acinetobacter sp. IrC2 is a copper-resistant bacterium isolated from an industrial waste treatment center in Rungkut, Surabaya. Copper-resistant bacteria are known to accumulate copper inside the cells as a mechanism to adapt to a copper-contaminated environment. Periplasmic and membrane proteins CopA and CopB have been known to incorporate copper as a mechanism of copper resistance. In the present study, protein profile changes in Acinetobacter sp. IrC2 following exposure to copper stress were analyzed to elucidate the copper resistance mechanism. Bacteria were grown in a Luria Bertani agar medium with and without CuSO4 supplementation. Intracellular copper ion accumulation was quantified using atomic absorption spectrophotometry. Changes in protein profile were assessed using sodium dodecyl sulfate polyacrylamide gel electrophoresis. The results showed that 6 mM CuSO4 was toxic for Acinetobacter sp. IrC2, and as a response to this copper-stress condition, the lag phase was prolonged to 18 h. It was also found that the bacteria accumulated copper to a level of 508.01 mg/g of cells' dry weight, marked by a change in colony color to green. The protein profile under copper stress was altered as evidenced by the appearance of five specific protein bands with molecular weights of 68.0, 60.5, 38.5, 24.0, and 20.5 kDa, suggesting the presence of CopA, multicopper oxidase (MCO), CopB, universal stress protein (Usp), and superoxide dismutase (SOD) and/or DNA-binding protein from starved cells, respectively. We proposed that the mechanism of bacterial resistance to copper involves CopA and CopB membrane proteins in binding Cu ions in the periplasm and excreting excess Cu ions as well as involving enzymes that play a role in the detoxification process, namely, SOD, MCO, and Usp to avoid cell damage under copper stress.
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Affiliation(s)
- Wahyu Irawati
- Department of Biology Education, Universitas Pelita Harapan, Tangerang, Indonesia
| | | | - Lucia Kusumawati
- Department of Food Technology, International University Liaison Indonesia, Tangerang, Indonesia
| | - Triwibowo Yuwono
- Department of Agricultural Microbiology, Universitas Gadjah Mada, Yogyakarta, Indonesia
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18
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England CJ, Gray TC, Malla SRL, Oliveira SA, Martin BR, Beall GW, Lewis LK. pH-dependent sedimentation of DNA in the presence of divalent, but not monovalent, metal ions. Anal Biochem 2021; 616:114099. [PMID: 33388294 PMCID: PMC7849029 DOI: 10.1016/j.ab.2020.114099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/22/2020] [Accepted: 12/26/2020] [Indexed: 10/22/2022]
Abstract
Precipitation of DNA is performed frequently in molecular biology laboratories for the purpose of purification and concentration of samples and also for transfer of DNA into cells. Metal ions are used to facilitate these processes, though their precise functions are not well characterized. In the current study we have investigated the precipitation of double-stranded DNA by group 1 and group 2 metal ions. Double-stranded DNAs were not sedimented efficiently by metals alone, even at high concentrations. Increasing the pH to 11 or higher caused strong DNA precipitation in the presence of the divalent group 2 metals magnesium, calcium, strontium and barium, but not group 1 metals. Group 2 sedimentation profiles were distinctly different from that of the transition metal zinc, which caused precipitation at pH 8. Analysis of DNAs recovered from precipitates formed with calcium revealed that structural integrity was retained and that sedimentation efficiency was largely size-independent above 400 bp. Several tests supported a model whereby single-stranded DNA regions formed by denaturation at high pH became bound by the divalent metal cations. Neutralization of negative surface charges reduced the repulsive forces between molecules, leading to formation of insoluble aggregates that could be further stabilized by cation bridging (ionic crosslinking).
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Affiliation(s)
- Corbin J England
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA
| | - Tanner C Gray
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA
| | - Shubha R L Malla
- Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX, 78666, USA
| | - Samantha A Oliveira
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA
| | - Benjamin R Martin
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA; Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX, 78666, USA
| | - Gary W Beall
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA; Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX, 78666, USA
| | - L Kevin Lewis
- Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA; Materials Science, Engineering and Commercialization Program, Texas State University, San Marcos, TX, 78666, USA.
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19
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Kuffel A, Gray A, Daeid NN. Impact of metal ions on PCR inhibition and RT-PCR efficiency. Int J Legal Med 2021; 135:63-72. [PMID: 32621147 PMCID: PMC7782418 DOI: 10.1007/s00414-020-02363-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/24/2020] [Indexed: 12/24/2022]
Abstract
Inhibition of PCR by metal ions can pose a serious challenge in the process of forensic DNA analysis. Samples contaminated with various types of metal ions encountered at crime scenes include swabs from metal surfaces such as bullets, cartridge casings, weapons (including guns and knives), metal wires and surfaces as well as bone samples which contain calcium. The mechanism behind the impact of metal ions on DNA recovery, extraction and subsequent amplification is not fully understood. In this study, we assessed the inhibitory effects of commonly encountered metals on DNA amplification. Of the nine tested metals, zinc, tin, iron(II) and copper were shown to have the strongest inhibitory properties having IC50 values significantly below 1 mM. In the second part of the study, three commercially available DNA polymerases were tested for their susceptibility to metal inhibition. We found that KOD polymerase was the most resistant to metal inhibition when compared with Q5 and Taq polymerase. We also demonstrate how the calcium chelator ethylene glycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid (EGTA) can be used as an easy and non-destructive method of reversing calcium-induced inhibition of PCR reactions.
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Affiliation(s)
- Agnieszka Kuffel
- Leverhulme Research Centre for Forensic Science, University of Dundee, Dundee, Scotland
| | - Alexander Gray
- Leverhulme Research Centre for Forensic Science, University of Dundee, Dundee, Scotland.
| | - Niamh Nic Daeid
- Leverhulme Research Centre for Forensic Science, University of Dundee, Dundee, Scotland
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20
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Eteshola EOU, Haupt DA, Koos SI, Siemer LA, Morris DL. The role of metal ion binding in the antioxidant mechanisms of reduced and oxidized glutathione in metal-mediated oxidative DNA damage. Metallomics 2020; 12:79-91. [PMID: 31750486 DOI: 10.1039/c9mt00231f] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The antioxidant activity of glutathione in its reduced (GSH) and oxidized (GSSG) forms against metal-mediated oxidative DNA damage was studied by monitoring production of 8-hydroxy-2'-deoxyguanosine (8-OH-dG) from calf-thymus DNA. GSH and GSSG were combined with Fe(ii) and Cu(ii) before and after addition of DNA to investigate the role of metal coordination in the antioxidant mechanism. The antioxidant behavior of GSH and GSSG was also compared to the known radical scavenger DMSO. GSH and GSSG lower oxidative DNA damage for Fe(ii) and Cu(ii) reactions. GSH only exhibited appreciable antioxidant behavior when combined with Fe(ii) prior to adding DNA, and GSH and GSSG were slightly more effective against Cu(ii)-mediated damage when combined with Cu(ii) prior to adding DNA. Raman spectra of GSH in the presence of Cu(ii) indicate that Cu(ii) oxidizes GSH and raises the possibility that the antioxidant activity of GSH against Cu(ii) reactions may be attributed to its ability to form GSSG. No evidence of GSH oxidation in the presence of Fe(ii) was observed. The fluorescent probe dichlorofluorescein diacetate (DCF-DA) shows that the presence of GSH (for Cu(ii) reactions) and GSSG (for Fe(ii) and Cu(ii) reactions) lowers levels of reactive oxygen species (ROS) in bulk solution. Overall, the results suggest that the mechanism of antioxidant activity for GSH and GSSG against Fe(ii) and Cu(ii)-mediated oxidative damage involves metal coordination, and isothermal titration calorimetry (ITC) studies of the Cu(ii)-GSSG system show an enthalpically favored complexation reaction with an apparent 1 : 1 stoichiometry.
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Affiliation(s)
- Elias O U Eteshola
- Department of Pharmacology & Cancer Biology/Department of Surgery, Duke University, Durham, NC 27710, USA
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21
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Rasouli Z, Ghavami R. Facile Approach to Fabricate a Chemical Sensor Array Based on Nanocurcumin-Metal Ions Aggregates: Detection and Identification of DNA Nucleobases. ACS OMEGA 2020; 5:19331-19341. [PMID: 32803026 PMCID: PMC7424583 DOI: 10.1021/acsomega.0c00593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 05/07/2020] [Indexed: 05/04/2023]
Abstract
Here, a three-channel absorbance sensor array based on the nanocurcumin-metal ion (NCur-MI) aggregates is designed for the detection and identification of deoxyribonucleic acid nucleobases (DNA NBs) for the first time. For this purpose, the binding affinities of some of MIs (i.e., Co2+, Cr3+, Cu2+, Fe2+, Fe3+, Hg2+, Mn2+, Ni2+, V3+, and Zn2+) to the NCur to induce the aggregation were evaluated under various experimental conditions. Further studies reveal that in the presence of DNA NBs, the aggregates of NCur-Co2+, NCur-Ni2+, and NCur-Zn2+ show the diverse absorbance responses to the deaggregation of NCur depending on the binding affinity of each of DNA NBs to the metal ions Co2+, Ni2+, and Zn2+. These responses are distinguishable from one another. Thus, clear differentiation among the DNA NBs is achieved by linear discriminant analysis and hierarchical clustering analysis to generate clustering maps. The discriminatory capacity of the sensor array for the identification of the DNA NBs is tested in the ranges of 2.4-16 and 5.6-10.4 μM. Furthermore, a mixed set of the DNA NBs was prepared for multivariate multicomponent analysis. Finally, the practicability of the sensor array is confirmed by the discrimination of the DNA NBs in an animal DNA sample. It should be noted that the proposed array is the first example to fabricate an NCur-based sensor array for the simultaneous detection of DNA NBs.
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Affiliation(s)
- Zolaikha Rasouli
- Chemometrics Laboratory, Chemistry
Department, Faculty of Science, University
of Kurdistan, P.O. Box 416, Sanandaj 66177-15175, Iran
| | - Raouf Ghavami
- Chemometrics Laboratory, Chemistry
Department, Faculty of Science, University
of Kurdistan, P.O. Box 416, Sanandaj 66177-15175, Iran
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22
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Wiesmann N, Tremel W, Brieger J. Zinc oxide nanoparticles for therapeutic purposes in cancer medicine. J Mater Chem B 2020; 8:4973-4989. [DOI: 10.1039/d0tb00739k] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Zinc oxide nanoparticles are characterized by a good biocompatibility while providing a versatile potential as innovative therapeutic agents in cancer medicine.
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Affiliation(s)
- Nadine Wiesmann
- Department of Otorhinolaryngology, Head and Neck Surgery
- University Medical Centre of the Johannes Gutenberg-University
- Laboratory for Molecular Tumor Biology
- 55131 Mainz
- Germany
| | - Wolfgang Tremel
- Department of Chemistry
- Johannes Gutenberg-University
- 55128 Mainz
- Germany
| | - Juergen Brieger
- Department of Otorhinolaryngology, Head and Neck Surgery
- University Medical Centre of the Johannes Gutenberg-University
- Laboratory for Molecular Tumor Biology
- 55131 Mainz
- Germany
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23
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Danilevich VN, Kozlov SA, Shevchuk TV, Oleinikov VA, Sizova SV, Khodarovich YM, Mulyukin AL. Ribonucleic acid (RNA) condensation by thermal cycling with metal cations: yield of nanoparticles and their applicability for transfection. J Biomol Struct Dyn 2019; 38:3959-3971. [PMID: 31543001 DOI: 10.1080/07391102.2019.1671228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
To the present, different efficient but expensive, multistage, and time-consuming technologies have been developed to deliver ribonucleic acids (RNA) into eukaryotic cells. Here, we report a simple and feasible solution to design RNA nanocarriers based on nucleic acid condensation by bi- and trivalent metal ions during thermal cycling. Efficient RNA conversion to nanoparticles with small size (10-50 nm) suitable for transfection was achieved using cations Ni2+, Co2+ or Cu2+ alone or in combination with Ca2+ at the specially selected concentrations (2.0 mM-3.5 mM), low ionic strength, and narrow pH range (8.0-8.5). Other ions - Mn2+, Zn2+, Tb3+, or Gd3+ - caused RNA-cleaving effect that was abolished in the presence of Ni2+, Co2+, Zn2+, or Cu2+. Naked RNA-metal ion nanoparticles were extremely unstable in phosphate buffer and sensitive to serum ribonucleases (RNases), and this problem was solved by treatment with polyarginines-16 and 8. Polyarginine-stabilized nanoparticles, containing malachite green (MG) aptamer RNA and metal cations, crossed the cell membrane, dissociated in the cytoplasm, and preserved the functionality of transported RNA, as judged from efficient transfection of human embryonic kidney 293 cells. The technology, involving RNA condensation by metal cations, can be used as a cheap alternative to produce nanoscale carriers to deliver various RNAs into cells in vitro and in vivo.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vasily N Danilevich
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Sergey A Kozlov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Taras V Shevchuk
- Branch of the M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, Moscow, Russia
| | - Vladimir A Oleinikov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Svetlana V Sizova
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Yuriy M Khodarovich
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, Moscow, Russia
| | - Andrey L Mulyukin
- Winogradsky Institute of Microbiology, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
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24
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Vellampatti S, Chandrasekaran G, Mitta SB, Dugasani SR, Lakshmanan VK, Park SH. Bacterial Resistance and Prostate Cancer Susceptibility Toward Metal-Ion-doped DNA Complexes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:44290-44300. [PMID: 30550272 DOI: 10.1021/acsami.8b17013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
DNA nanotechnology has laid a platform to construct a variety of custom-shaped nanoscale objects for functionalization of specific target materials to achieve programmability and molecular recognition. Herein, we prepared DNA nanostructures [namely, synthetic DNA rings (RDNA) and DNA duplexes extracted from salmon (SDNA)] containing metal ions (M2+) such as Cu2+, Ni2+, and Zn2+ as payloads for delivery to exterminate highly pathologic hospital bacterial strains (e.g., Escherichia coli and Bacillus subtilis) and prostate cancer cells (i.e., PC3, LNCaP, TRAMP-C1, 22Rv1, and DU145). Morphologies of these M2+-doped RDNA were visualized using atomic force microscopy. Interactions between M2+ and DNA were studied using UV-vis and Fourier transform infrared spectroscopy. Quantitative composition and chemical changes in DNA without or with M2+ were obtained using X-ray photoelectron spectroscopy. In addition, M2+-doped DNA complexes were subjected to antibacterial activity studies. They showed no bacteriostatic or bactericidal effects on bacterial strains used. Finally, in vitro cellular toxicity study was conducted to evaluate the effect of pristine DNA and M2+-doped DNA complexes on prostate cancer cells. Cytotoxicities conferred by M2+-doped DNA complexes for most cell lines were significantly higher than those of M2+ without DNA. Cellular uptake of these complexes was confirmed by fluorescence microscopy using PhenGreen FL indicator. On the basis of our observations, DNA nanostructures can be used as safe and efficient nanocarriers for delivery of therapeutics. They have enhanced therapeutic window than bare metals.
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Affiliation(s)
- Srivithya Vellampatti
- Sungkyunkwan Advanced Institute of Nanotechnology (SAINT) and Department of Physics , Sungkyunkwan University , Suwon 16419 , Korea
| | | | - Sekhar Babu Mitta
- Sungkyunkwan Advanced Institute of Nanotechnology (SAINT) and Department of Physics , Sungkyunkwan University , Suwon 16419 , Korea
| | - Sreekantha Reddy Dugasani
- Sungkyunkwan Advanced Institute of Nanotechnology (SAINT) and Department of Physics , Sungkyunkwan University , Suwon 16419 , Korea
| | - Vinoth-Kumar Lakshmanan
- Department of Biomedical Sciences , Chonnam National University Medical School , Gwangju 61469 , Korea
- Department of Biomedical Engineering , Sri Shakthi Institute of Engineering and Technology , Coimbatore 641062 , India
| | - Sung Ha Park
- Sungkyunkwan Advanced Institute of Nanotechnology (SAINT) and Department of Physics , Sungkyunkwan University , Suwon 16419 , Korea
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25
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Kale KB, Ottoor DP. Comprehensive analysis of the atenolol - DNA complex by viscometric, molecular docking and spectroscopic techniques. LUMINESCENCE 2018; 34:39-47. [DOI: 10.1002/bio.3574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/01/2018] [Accepted: 10/04/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Kishor B. Kale
- Department of Chemistry; Savitribai Phule Pune University; Ganeshkhind Road Pune India
| | - Divya P. Ottoor
- Department of Chemistry; Savitribai Phule Pune University; Ganeshkhind Road Pune India
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26
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Chen YW, Satange R, Wu PC, Jhan CR, Chang CK, Chung KR, Waring MJ, Lin SW, Hsieh LC, Hou MH. Co II(Chromomycin)₂ Complex Induces a Conformational Change of CCG Repeats from i-Motif to Base-Extruded DNA Duplex. Int J Mol Sci 2018; 19:ijms19092796. [PMID: 30227633 PMCID: PMC6164834 DOI: 10.3390/ijms19092796] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 09/07/2018] [Indexed: 01/07/2023] Open
Abstract
We have reported the propensity of a DNA sequence containing CCG repeats to form a stable i-motif tetraplex structure in the absence of ligands. Here we show that an i-motif DNA sequence may transition to a base-extruded duplex structure with a GGCC tetranucleotide tract when bound to the (CoII)-mediated dimer of chromomycin A3, CoII(Chro)₂. Biophysical experiments reveal that CCG trinucleotide repeats provide favorable binding sites for CoII(Chro)₂. In addition, water hydration and divalent metal ion (CoII) interactions also play a crucial role in the stabilization of CCG trinucleotide repeats (TNRs). Our data furnish useful structural information for the design of novel therapeutic strategies to treat neurological diseases caused by repeat expansions.
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Affiliation(s)
- Yu-Wen Chen
- Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Roshan Satange
- Institute of Genomics and Bioinformatics, National Chung-Hsing University, Taichung 402, Taiwan.
- Ph.D. Program in Medical Biotechnology, National Chung Hsing University, Taichung 402, Taiwan.
| | - Pei-Ching Wu
- Institute of Genomics and Bioinformatics, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Cyong-Ru Jhan
- Department of Life Sciences, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Chung-Ke Chang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan.
| | - Kuang-Ren Chung
- Department of Plant Pathology, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Michael J Waring
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK.
| | - Sheng-Wei Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan.
| | - Li-Ching Hsieh
- Institute of Genomics and Bioinformatics, National Chung-Hsing University, Taichung 402, Taiwan.
- Advanced Plant Biotechnology Center, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Ming-Hon Hou
- Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan.
- Institute of Genomics and Bioinformatics, National Chung-Hsing University, Taichung 402, Taiwan.
- Ph.D. Program in Medical Biotechnology, National Chung Hsing University, Taichung 402, Taiwan.
- Department of Life Sciences, National Chung-Hsing University, Taichung 402, Taiwan.
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27
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Bronder TS, Jessing MP, Poghossian A, Keusgen M, Schöning MJ. Detection of PCR-Amplified Tuberculosis DNA Fragments with Polyelectrolyte-Modified Field-Effect Sensors. Anal Chem 2018; 90:7747-7753. [PMID: 29770694 DOI: 10.1021/acs.analchem.8b01807] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Field-effect-based electrolyte-insulator-semiconductor (EIS) sensors were modified with a bilayer of positively charged weak polyelectrolyte (poly(allylamine hydrochloride) (PAH)) and probe single-stranded DNA (ssDNA) and are used for the detection of complementary single-stranded target DNA (cDNA) in different test solutions. The sensing mechanism is based on the detection of the intrinsic molecular charge of target cDNA molecules after the hybridization event between cDNA and immobilized probe ssDNA. The test solutions contain synthetic cDNA oligonucleotides (with a sequence of tuberculosis mycobacteria genome) or PCR-amplified DNA (which origins from a template DNA strand that has been extracted from Mycobacterium avium paratuberculosis-spiked human sputum samples), respectively. Sensor responses up to 41 mV have been measured for the test solutions with DNA, while only small signals of ∼5 mV were detected for solutions without DNA. The lower detection limit of the EIS sensors was ∼0.3 nM, and the sensitivity was ∼7.2 mV/decade. Fluorescence experiments using SybrGreen I fluorescence dye support the electrochemical results.
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Affiliation(s)
- Thomas S Bronder
- Institute of Nano- and Biotechnologies , FH Aachen , Campus Jülich , 52428 Jülich , Germany.,Institute of Complex Systems Bioelectronics (ICS-8) , Forschungszentrum Jülich GmbH , 52425 Jülich , Germany
| | - Max P Jessing
- Institute of Nano- and Biotechnologies , FH Aachen , Campus Jülich , 52428 Jülich , Germany
| | - Arshak Poghossian
- Institute of Nano- and Biotechnologies , FH Aachen , Campus Jülich , 52428 Jülich , Germany.,Institute of Complex Systems Bioelectronics (ICS-8) , Forschungszentrum Jülich GmbH , 52425 Jülich , Germany
| | - Michael Keusgen
- Institute of Pharmaceutical Chemistry , Philipps University Marburg , 35037 Marburg , Germany
| | - Michael J Schöning
- Institute of Nano- and Biotechnologies , FH Aachen , Campus Jülich , 52428 Jülich , Germany.,Institute of Complex Systems Bioelectronics (ICS-8) , Forschungszentrum Jülich GmbH , 52425 Jülich , Germany
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Campbell EA, Peterson E, Kolpashchikov DM. Self-Assembling Molecular Logic Gates Based on DNA Crossover Tiles. Chemphyschem 2017; 18:1730-1734. [PMID: 28234410 DOI: 10.1002/cphc.201700109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Indexed: 02/02/2023]
Abstract
DNA-based computational hardware has attracted ever-growing attention due to its potential to be useful in the analysis of complex mixtures of biological markers. Here we report the design of self-assembling logic gates that recognize DNA inputs and assemble into crossover tiles when the output signal is high; the crossover structures disassemble to form separate DNA stands when the output is low. The output signal can be conveniently detected by fluorescence using a molecular beacon probe as a reporter. AND, NOT, and OR logic gates were designed. We demonstrate that the gates can connect to each other to produce other logic functions.
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Affiliation(s)
- Eleanor A Campbell
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL, 32816-2366, USA
| | - Evan Peterson
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL, 32816-2366, USA
| | - Dmitry M Kolpashchikov
- Chemistry Department, University of Central Florida, 4000 Central Florida Boulevard, Orlando, FL, 32816-2366, USA.,Burnett School of Biomedical Sciences, College of Medicine and National Center for Forensic Science, University of Central Florida, Orlando, FL, 32816, USA)An invited contribution to a Special Issue on Molecular Logic
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29
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Effects of conformational ordering on protein/polyelectrolyte electrostatic complexation: ionic binding and chain stiffening. Sci Rep 2016; 6:23739. [PMID: 27030165 PMCID: PMC4814872 DOI: 10.1038/srep23739] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 03/14/2016] [Indexed: 11/23/2022] Open
Abstract
Coupling of electrostatic complexation with conformational transition is rather general in protein/polyelectrolyte interaction and has important implications in many biological processes and practical applications. This work studied the electrostatic complexation between κ-carrageenan (κ-car) and type B gelatin, and analyzed the effects of the conformational ordering of κ-car induced upon cooling in the presence of potassium chloride (KCl) or tetramethylammonium iodide (Me4NI). Experimental results showed that the effects of conformational ordering on protein/polyelectrolyte electrostatic complexation can be decomposed into ionic binding and chain stiffening. At the initial stage of conformational ordering, electrostatic complexation can be either suppressed or enhanced due to the ionic bindings of K+ and I− ions, which significantly alter the charge density of κ-car or occupy the binding sites of gelatin. Beyond a certain stage of conformational ordering, i.e., helix content θ > 0.30, the effect of chain stiffening, accompanied with a rapid increase in helix length ζ, becomes dominant and tends to dissociate the electrostatic complexation. The effect of chain stiffening can be theoretically interpreted in terms of double helix association.
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