Detection of ROS Generated by UV-C Irradiation of CdS Quantum Dots and their Effect on Damage to Chromosomal and Plasmid DNA
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F18%3A43913547" target="_blank" >RIV/62156489:43210/18:43913547 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/18:PU127820
Result on the web
<a href="https://doi.org/10.1002/elan.201700648" target="_blank" >https://doi.org/10.1002/elan.201700648</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/elan.201700648" target="_blank" >10.1002/elan.201700648</a>
Alternative languages
Result language
angličtina
Original language name
Detection of ROS Generated by UV-C Irradiation of CdS Quantum Dots and their Effect on Damage to Chromosomal and Plasmid DNA
Original language description
Different sensitivity of various types of DNA to damage and mutation requires a study of effects of chemical and physical factors on integrity of individual DNA structures. Oxidation stress induced by photoactivated nanoparticles including quantum dots is considered to be the main mechanism of their potential risks. In this work, spectrophotometric indicators of reactive oxygen species (ROS) 4-chloro-7-nitrobenzo-2-oxa-1,3-diazole (NBD-Cl) and -diphenyl--picrylhydrazyl (DPPH), electrochemical DNA-based biosensors with the thiol-capped CdS quantum dots (CdS QDs) immobilized over the chromosomal (ct DNA) and plasmid (pUC19) DNA biorecognition layers and agarose gel electrophoresis were used (i) to detect ROS generated at the UV-C irradiation (=254nm) of CdS QDs and (ii) to assess and evaluate their effect towards the chromosomal and plasmid dsDNA structure. Voltammetric and impedimetric measurements revealed a deep degradation of DNA attached to the glassy carbon electrode surface with a stepwise decrease of the portion of survived pUC19 and ct DNA after 60s to 2400s irradiation time up to 47% and to 32%, resp., comparing to the portion in the absence of CdS QDs reaching 58% and 40%, resp. Agarose gel electrophoresis supported the damage to plasmid and chromosomal DNA demonstrating double strand breaks. A decrease in the stability of DNA types towards degradation by ROS in order pUC19>calf thymus>salmon sperm dsDNA has been found.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Electroanalysis
ISSN
1040-0397
e-ISSN
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Volume of the periodical
30
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
698-704
UT code for WoS article
000429708900016
EID of the result in the Scopus database
2-s2.0-85045411959