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Hilder TA, Hodgkiss JM. Molecular Mechanism of Binding between 17β-Estradiol and DNA. Comput Struct Biotechnol J 2016; 15:91-97. [PMID: 28066533 PMCID: PMC5196241 DOI: 10.1016/j.csbj.2016.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 11/30/2016] [Accepted: 12/05/2016] [Indexed: 02/05/2023] Open
Abstract
Although 17β-estradiol (E2) is a natural molecule involved in the endocrine system, its widespread use in various applications has resulted in its accumulation in the environment and its classification as an endocrine-disrupting molecule. These molecules can interfere with the hormonal system, and have been linked to various adverse effects such as the proliferation of breast cancer. It has been proposed that E2 could contribute to breast cancer by the induction of DNA damage. Mass spectrometry has demonstrated that E2 can bind to DNA but the mechanism by which E2 interacts with DNA has yet to be elucidated. Using all-atom molecular dynamics simulations, we demonstrate that E2 intercalates (inserts between two successive DNA base pairs) in DNA at the location specific to estrogen receptor binding, known as the estrogen response element (ERE), and to other random sequences of DNA. Our results suggest that excess E2 has the potential to disrupt processes in the body which rely on binding to DNA, such as the binding of the estrogen receptor to the ERE and the activity of enzymes that bind DNA, and could lead to DNA damage.
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Affiliation(s)
- Tamsyn A. Hilder
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
- Computational Biophysics Group, Research School of Biology, Canberra, ACT 0200, Australia
- Correspondence to: T.A. Hilder, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand.Computational Biophysics GroupResearch School of BiologyCanberraACT0200Australia
| | - Justin M. Hodgkiss
- School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
- The MacDiarmid Institute of Advanced Materials and Nanotechnology, New Zealand
- Correspondence to: J.M. Hodgkiss, The MacDiarmid Institute of Advanced Materials and Nanotechnology, New Zealand.The MacDiarmid Institute of Advanced Materials and NanotechnologyNew Zealand
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Turek A, Olakowska E, Borecka A, Janeczek H, Sobota M, Jaworska J, Kaczmarczyk B, Jarząbek B, Gruchlik A, Libera M, Liśkiewicz A, Jędrzejowska-Szypułka H, Kasperczyk J. Shape-Memory Terpolymer Rods with 17-β-estradiol for the Treatment of Neurodegenerative Diseases: an In Vitro and In Vivo Study. Pharm Res 2016; 33:2967-2978. [PMID: 27628625 PMCID: PMC5093210 DOI: 10.1007/s11095-016-2019-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 08/12/2016] [Indexed: 11/29/2022]
Abstract
Purpose Estradiol (E2)-loaded poly(L-lactide-co-glycolide-trimethylenecarbonate) (P(L-LA:GA:TMC)) rods with shape-memory were developed for the treatment of neurodegenerative diseases. Usefulness of the extrusion method in the obtaining process was also considered. The influence of structural and surface properties during hydrolytic degradation was developed. The possible therapeutic aspect of rods with E2 was determined. Methods The extruded rods were incubated in a PBS solution (pH 7.4, 37°C, 240 rpm). The amount of released E2 in vitro conditions was estimated by UV-VIS method. The following methods in the degradation of rods were applied: NMR, DSC, FTIR, GPC, SEM, and optical microscopy. Changes in water uptake and weight loss were also determined. In vivo study was performed on rats. Measurements of E2 level were performed before and after ovariectomy of rats using ELISA method. A sample of tissue adjacent to the site of the rod implantation was analysed under an optical microscope. Results A stable and steady degradation process ensured zero-order release of E2. The in vivo study indicated a significant increase in the E2 level in serum after ovariectomy. Moreover, structural and surface features indicated that the extrusion method was appropriate for obtaining E2-loaded rods. Conclusions Shape-memory P(L-LA:GA:TMC) rods with E2 are an adequate proposal for further research in the field of neurological disorders.
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Affiliation(s)
- Artur Turek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland. .,School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Chair and Department of Biopharmacy, Jednosci 8, Sosnowiec, Poland.
| | - Edyta Olakowska
- School of Medicine in Katowice, Medical University of Silesia, Katowice, Department of Physiology, Medykow 18, Katowice, Poland
| | - Aleksandra Borecka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland.,School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Chair and Department of Biopharmacy, Jednosci 8, Sosnowiec, Poland
| | - Henryk Janeczek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Michał Sobota
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Joanna Jaworska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Bożena Kaczmarczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Bożena Jarząbek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Arkadiusz Gruchlik
- School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Chair and Department of Biopharmacy, Jednosci 8, Sosnowiec, Poland
| | - Marcin Libera
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland
| | - Arkadiusz Liśkiewicz
- School of Medicine in Katowice, Medical University of Silesia, Katowice, Department of Physiology, Medykow 18, Katowice, Poland
| | - Halina Jędrzejowska-Szypułka
- School of Medicine in Katowice, Medical University of Silesia, Katowice, Department of Physiology, Medykow 18, Katowice, Poland
| | - Janusz Kasperczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, Zabrze, Poland.,School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Chair and Department of Biopharmacy, Jednosci 8, Sosnowiec, Poland
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Heger Z, Zitka J, Nejdl L, Moulick A, Milosavljevic V, Kopel P, Zavodsky O, Kapus J, Lenza L, Rezka M, Adam V, Kizek R. 3D printed stratospheric probe as a platform for determination of DNA damage based on carbon quantum dots/DNA complex fluorescence increase. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1705-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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