Publication detail

In Vitro Interactions between 17 beta-Estradiol and DNA Result in Formation of the Hormone-DNA Complexes

HEGER, Z. GURÁŇ, R. ZÍTKA, O. BEKLOVÁ, M. ADAM, V. KIZEK, R.

Original Title

In Vitro Interactions between 17 beta-Estradiol and DNA Result in Formation of the Hormone-DNA Complexes

Type

journal article in Web of Science

Language

English

Original Abstract

Beyond the role of 17 beta-estradiol (E-2) in reproduction and during the menstrual cycle, it has been shown to modulate numerous physiological processes such as cell proliferation, apoptosis, inflammation and ion transport in many tissues. The pathways in which estrogens affect an organism have been partially described, although many questions still exist regarding estrogens' interaction with biomacromolecules. Hence, the present study showed the interaction of four oligonucleotides (17, 20, 24 and/or 38-mer) with E-2. The strength of these interactions was evaluated using optical methods, showing that the interaction is influenced by three major factors, namely: oligonucleotide length, E-2 concentration and interaction time. In addition, the denaturation phenomenon of DNA revealed that the binding of E-2 leads to destabilization of hydrogen bonds between the nitrogenous bases of DNA strands resulting in a decrease of their melting temperatures (T-m). To obtain a more detailed insight into these interactions, MALDI-TOF mass spectrometry was employed. This study revealed that E-2 with DNA forms non-covalent physical complexes, observed as the mass shifts for app. 270 Da (Mr of E-2) to higher molecular masses. Taken together, our results indicate that E-2 can affect biomacromolecules, as circulating oligonucleotides, which can trigger mutations, leading to various unwanted effects.

Keywords

cancer; denaturation; endocrine disruptors; estrogens; nucleic acids; spectrometry

Authors

HEGER, Z.; GURÁŇ, R.; ZÍTKA, O.; BEKLOVÁ, M.; ADAM, V.; KIZEK, R.

Released

1. 8. 2014

Publisher

MDPI

ISBN

1660-4601

Periodical

International Journal of Environmental Research and Public Health

Year of study

11

Number

8

State

Swiss Confederation

Pages from

7725

Pages to

7739

Pages count

15

URL

http://www.mdpi.com/1660-4601/11/8/7725

Full text in the Digital Library

http://hdl.handle.net/11012/181133

BibTex

@article{BUT145195,
  author="Zbyněk {Heger} and Roman {Guráň} and Ondřej {Zítka} and Miroslava {Beklová} and Vojtěch {Adam} and René {Kizek}",
  title="In Vitro Interactions between 17 beta-Estradiol and DNA Result in Formation of the Hormone-DNA Complexes",
  journal="International Journal of Environmental Research and Public Health",
  year="2014",
  volume="11",
  number="8",
  pages="7725--7739",
  doi="10.3390/ijerph110807725",
  issn="1660-4601",
  url="http://www.mdpi.com/1660-4601/11/8/7725"
}