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Study of the expression and toxicity of catechol derivates in MCF-7 cell line
Kleplová, Dominika ; Carazo Fernández, Alejandro (advisor) ; Vokřál, Ivan (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Dominika Kleplová Supervisor: PharmDr. Alejandro Carazo, PhD. Title of the Diploma thesis: Study of the expression and toxicity of catechol derivatives in MCF-7 cell line Estrogens perform many important functions in the human body. They act by binding to estrogen receptors (ER) and thus regulate reproduction, the menstrual cycle, bone density, cholesterol metabolism or brain function. They also play an important role in the development and onset of breast cancer, where the amount of ER expressed is used as a very important biomarker in patients suffering from this disease. Despite ongoing research, breast cancer is considered to have the highest mortality rate. Catechols are organic compounds. In the human body, they can occur as metabolites in the degradation of benzene and estrogens or other endogenous compounds such as neurotransmitters and their precursors. Catechols are known to be involved in redox processes in the body, to exert antioxidant and toxic effects, to interfere with protein function and to cause DNA strand breaks. Their positive effect on breast cancer therapy is the subject of research, but it has not yet been fully explored. The subject of this thesis is to study the...
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Study of the expression and toxicity of catechol derivates in breast cancer cell lines
Vyoralová, Tereza ; Carazo Fernández, Alejandro (advisor) ; Jirkovský, Eduard (referee)
Studium exprese a toxicity derivátů katecholu v prsních nádorových buněčných liniích, Tereza Vyoralová ABSTRACT Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Tereza Vyoralová Supervisor: PharmDr. Alejandro Carazo Ph.D. Title of the diploma thesis: Study of the expression and toxicity of catechol derivates in breast cancer cell lines Estrogens have several important functions in the human organism and are also involved in the formation and development of breast cancer. These effects are mediated by binding to estrogen receptors (ER) and show complex spectrum of effects such as regulation of reproduction, menstrual cycle, brain function, bone density or mobilization of cholesterol. In addition the presence and quantification of ER in breast cancer is currently used as one of the most important predictive biomarkers in patients suffering from this disease. The occurence and activity of ER correlates with the response of breast cancer to hormonal treatment and with the patient's prognosis. Despite intensive research, breast cancer is still ranked among the cancers with the highest lethality. Catechols are organic compounds that are naturally present in food as pollutants, but also can be found in the human body, where they play an important role as...
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Study of the expression and toxicity of catechol derivates in breast cancer cell lines
Vyoralová, Tereza ; Carazo Fernández, Alejandro (advisor) ; Jirkovský, Eduard (referee)
Studium exprese a toxicity derivátů katecholu v prsních nádorových buněčných liniích, Tereza Vyoralová ABSTRACT Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Tereza Vyoralová Supervisor: PharmDr. Alejandro Carazo Ph.D. Title of the diploma thesis: Study of the expression and toxicity of catechol derivates in breast cancer cell lines Estrogens have several important functions in the human organism and are also involved in the formation and development of breast cancer. These effects are mediated by binding to estrogen receptors (ER) and show complex spectrum of effects such as regulation of reproduction, menstrual cycle, brain function, bone density or mobilization of cholesterol. In addition the presence and quantification of ER in breast cancer is currently used as one of the most important predictive biomarkers in patients suffering from this disease. The occurence and activity of ER correlates with the response of breast cancer to hormonal treatment and with the patient's prognosis. Despite intensive research, breast cancer is still ranked among the cancers with the highest lethality. Catechols are organic compounds that are naturally present in food as pollutants, but also can be found in the human body, where they play an important role as...
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Study of the influence of natural drugs on estrogen receptor and confirmation of their effect in cell cultures
Elbelová, Jana ; Carazo Fernández, Alejandro (advisor) ; Pourová, Jana (referee)
Charles University Faculty of Pharmacy in Hradec Králové Department of Pharmacology and Toxicology Student: Jana Elbelová Supervisor: PharmDr. Alejandro Carazo, Ph.D. Title of the diploma thesis: Study of the influence of natural drugs on estrogen receptor and confirmation of their influence in cell culture Estrogens are one of the main reproductive hormones in women. Their function in the human organism is mediated by the estrogen receptor (ER). Estrogens are involved in important physiological processes such as reproduction, bone metabolism and cardiovascular function. Long term elevated levels of these hormones may also lead to breast cancer development. Phytoestrogens are natural ligands of estrogen receptor widely found in dietary products. These compounds have beneficial properties in treatment of menopausal symptoms thank to their estrogenic activities but are able to function as antiestrogenic agents too. In addition, they may play a role in the development of other illnesses (breast cancer etc.). Therefore, they can be considered as a potential pharmacological tool for the treatment of estrogen-related conditions. Within this master thesis, a total of six compounds, two phytoestrogens and four of their more relevant metabolites, were chosen (genistein, daidzein, S equol, O...
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Analysis of prognostic features in patients with breast cancer and colorectal cancer.
Vočka, Michal ; Petruželka, Luboš (advisor) ; Fínek, Jindřich (referee) ; Prausová, Jana (referee)
Cancers represent second the most common cause of death in the Czech Republic. The most common are breast and colorectal cancers. Identification of prognostic factors improving decision-making approaches for treatment optimization belongs to the key aims of clinical research in oncology. Carriers of mutation in cancer-susceptibility genes represent a small but clinically important group of high-risk patients. The implementation of NGS have accelerated predisposing genes analyses. The large extent of data about the presence of variants in predisposing genes is in striking contrast to only a very limited information available about clinico-pathological characteristics of mutation carriers. Determination of the risk of tumor development in carriers of rare mutations or variants of unclear significance in genes with incomplete penetrance represent substantial drawbacks of current NGS analyses. To address these issues, we have attempted i) to introduce a unified approach to NGS analysis in breast cancer patients, ii) to characterize importance of prognostic factors in BRCA1/BRCA2 mutation carriers, and iii) to identify the cancer risks in carriers of germline mutations in the CHEK2 gene. Colorectal cancer represents seemingly histologically homogeneous disease. However, at the molecular level it can be...
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