Original Article
Enterolactone Reduces Telomerase Activity and The Level of Its Catalytic Subunit in Breast Cancer Cells Davod Ilbeigi, M.Sc.1, Mitra Nourbakhsh, Ph.D.2, 3*, Shahnaz Khaghani, Ph.D.1*, Nahid Einollahi, Ph.D.4, Nejat Kheiripour, M.Sc.1, Zafar Gholinejad, M.Sc.1, Mohammad Alaee, M.Sc.1, Mostafa Saberian, M.Sc.4 1. Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2. Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran 3. Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular, Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran 4. Department of Clinical Laboratory Sciences, Faculty of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
*Corresponding Addresses: P.O.Box: 1449614535, Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran P.O.Box: 1417614418, Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran Emails: [email protected], [email protected] Received: 22/Sep/2016, Accepted: 22/Nov/2016
Abstract
Objective: There is a positive correlation between higher serum phytoestrogen concentrations and lower risk of breast cancer. The activation of telomerase is crucial for the growth of cancer cells; therefore, the aim of this study was to examine the effects of enterolactone (ENL) and enterodiol (END) on this enzyme. Materials and Methods: In this experimental study, we performed the viability assay to determine the effects of different concentrations of ENL and END on cell viability, and the effective concentrations of these two compounds on cell growth. We used western blot analysis to evaluate human telomerase reverse transcriptase catalytic subunit (hTERT) expression and polymerase chain reaction (PCR)-ELISA based on the telomeric repeat amplification protocol (TRAP) assay for telomerase activity. Results: Both ENL and END, at 100 μM concentrations, significantly (P
Enterolactone Reduces Telomerase Activity and The Level of Its Catalytic Subunit in Breast Cancer Cells Davod Ilbeigi, M.Sc.1, Mitra Nourbakhsh, Ph.D.2, 3*, Shahnaz Khaghani, Ph.D.1*, Nahid Einollahi, Ph.D.4, Nejat Kheiripour, M.Sc.1, Zafar Gholinejad, M.Sc.1, Mohammad Alaee, M.Sc.1, Mostafa Saberian, M.Sc.4 1. Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran 2. Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran 3. Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular, Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran 4. Department of Clinical Laboratory Sciences, Faculty of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
*Corresponding Addresses: P.O.Box: 1449614535, Department of Biochemistry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran P.O.Box: 1417614418, Department of Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran Emails: [email protected], [email protected] Received: 22/Sep/2016, Accepted: 22/Nov/2016
Abstract
Objective: There is a positive correlation between higher serum phytoestrogen concentrations and lower risk of breast cancer. The activation of telomerase is crucial for the growth of cancer cells; therefore, the aim of this study was to examine the effects of enterolactone (ENL) and enterodiol (END) on this enzyme. Materials and Methods: In this experimental study, we performed the viability assay to determine the effects of different concentrations of ENL and END on cell viability, and the effective concentrations of these two compounds on cell growth. We used western blot analysis to evaluate human telomerase reverse transcriptase catalytic subunit (hTERT) expression and polymerase chain reaction (PCR)-ELISA based on the telomeric repeat amplification protocol (TRAP) assay for telomerase activity. Results: Both ENL and END, at 100 μM concentrations, significantly (P
