Abstract
Aim:Anticancer drugs (chemotherapeutics) used in cancer treatment (chemotherapy) lead to drug resistance. This study was conducted to investigate the possible effect of iron on calcium homeostasis in epithelial ovarian cancer cells (MDAH-2774) and cisplatin-resistant cells of the same cell line (MDAH-2774/DDP).Methods:To develop MDAH-2774/DDP cells, MDAH-2774 (MDAH) cells were treated with cisplatin in dose increases of 5 μM between 0 μM and 70 μM. The effect of iron on the viability of MDAH and MDAH/DDP cells was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test at the end of 24 h incubation.Results:At increasing iron concentrations in MDAH and MDAH/DDP cells, the mRNA gene of fifteen genes [inositol 1,4,5-triphosphate receptor (IP3R)1/2/3, ryanodine receptor (RYR)1/2, sarco/endoplasmic reticulum Ca2+ ATPase (SERCA)1/2/3, Na+/Ca2+ exchange (NCX)1/2/3, and plasma membrane Ca2+ ATPase (PMCA)1/2/3/4] associated with Ca2+ differences in expression were determined by quantitative reverse transcription-polymerase chain reaction. Changes in IP3R2, RYR1, SERCA2, NCX3, PMCA1, and PMCA3 gene expressions were observed in iron treatment of MDAH/DDP cells, while changes were detected in iron treatment of MDAH cells in IP3R1/2/3, RYR1/2, SERCA1/2/3, NCX2/3, and PMCA1 expressions.Conclusions:This changes in the expression of calcium channels, pumps, and exchange proteins in the epithelial ovarian cancer cell line and in cisplatin-resistant epithelial ovarian cancer cells suggest that iron may have an important role in regulating calcium homeostasis. Due to differences in the expression of genes that play of an important role in the regulation of calcium homeostasis in the effect of iron, drug resistance can be prevented by introducing a new perspective on the use of inhibitors and activators of these genes and thus cytostatic treatment strategies.
Highlights
Cancer is an important health problem affecting many people around the world
Differences in mRNA expression of fifteen genes (IP3R1/2/3, RYR1/2, SERCA1/2/3, NCX1/2/3, and PMCA1/2/3/4) associated with Ca2+ were analyzed by quantitative reverse transcription-polymerase chain reaction (RT-PCR) in increasing iron concentrations in MDAH and MDAH/DDP cells. 2-ΔΔCt values that were calculated from the measurement of Ca2+-related mRNA expressions from MDAH and MDAH/DDP cells were compared
While no change in IP3R1 gene expression was observed in increasing concentrations of iron in MDAH/ DDP cells, a significant rise in IP3R1 gene expression was observed in the treatment of MDAH cells with 5 μM, 10 μM and 80 μM iron
Summary
Cancer is an important health problem affecting many people around the world. For this reason, great interest and economic effort is spent to discover new strategies and methods for the prevention and treatment of cancers worldwide [1]. Chemotherapy is the main strategy in cancer treatment, drug resistance to chemotherapeutic drugs is one of the reasons that hinder success. While many cancers initially show sensitivity to chemotherapy, drug resistance appears over time in the effectiveness of various mechanisms. Drug resistance may be present before treatment (internal) or develop as a result of treatment (acquired) [2]. Deaths of among women worldwide result from ovarian cancer which is one of the ten most prevalent types of cancer. Epithelial tumor cancer account for 75% of all ovarian cancers and is the most common ovarian cancer [3]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
