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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&gt;calf thymus&gt;salmon sperm dsDNA has been found.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10406 - Analytical chemistry

Result continuities

  • Project

  • 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

  • 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