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Article

2-Hydroxyestradiol Overcomes Mesenchymal Stem Cells-Mediated Platinum Chemoresistance in Ovarian Cancer Cells in an ERK-Independent Fashion

by 1,†, 1,2,† and 1,2,*
1
Department of Nutrition and Natural Products, Migal—Galilee Research Institute, Kiryat Shmona 11016, Israel
2
Department of Biotechnology, Tel-Hai College, Kiryat Shmona 11016, Israel
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Mauro Ravera
Molecules 2022, 27(3), 804; https://doi.org/10.3390/molecules27030804
Received: 3 January 2022 / Revised: 17 January 2022 / Accepted: 19 January 2022 / Published: 26 January 2022
Ovarian cancer (OC) is the second most common type of gynecological malignancy. Platinum (Pt)-based chemotherapy is the standard of care for OC, but toxicity and acquired chemoresistance has proven challenging. Recently, we reported that sensitivity to platinum was significantly reduced in a co-culture of OC cells with MSC. To discover compounds capable of restoring platinum sensitivity, we screened a number of candidates and monitored ability to induce PARP cleavage. Moreover, we monitored platinum uptake and expression of ABC transporters in OC cells. Our results showed that 2-hydroxyestradiol (2HE2), a metabolite of estradiol, and dasatinib, an Abl/Src kinase inhibitor, were significantly effective in overcoming MSC-mediated platinum drug resistance. Dasatinib activity was dependent on ERK1/2 activation, whereas 2HE2 was independent of the activation of ERK1/2. MSC-mediated platinum drug resistance was accompanied by reduced intracellular platinum concentrations in OC cells. Moreover, MSC co-cultured with OC cells resulted in downregulation of the expression of cellular transporters required for platinum uptake and efflux. Exposure to 2HE2 and other modulators resulted in an increase in intracellular platinum concentrations. Thus, 2HE2 and dasatinib might act as sensitizers to restore platinum drug sensitivity to OC cells and thus to limit TME-mediated chemoresistance in OC. View Full-Text
Keywords: ovarian cancer; drug resistance; ERK; 2HE2; platinum ovarian cancer; drug resistance; ERK; 2HE2; platinum
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MDPI and ACS Style

Khamaisi, H.; Mahmoud, H.; Mahajna, J. 2-Hydroxyestradiol Overcomes Mesenchymal Stem Cells-Mediated Platinum Chemoresistance in Ovarian Cancer Cells in an ERK-Independent Fashion. Molecules 2022, 27, 804. https://doi.org/10.3390/molecules27030804

AMA Style

Khamaisi H, Mahmoud H, Mahajna J. 2-Hydroxyestradiol Overcomes Mesenchymal Stem Cells-Mediated Platinum Chemoresistance in Ovarian Cancer Cells in an ERK-Independent Fashion. Molecules. 2022; 27(3):804. https://doi.org/10.3390/molecules27030804

Chicago/Turabian Style

Khamaisi, Hazem, Hatem Mahmoud, and Jamal Mahajna. 2022. "2-Hydroxyestradiol Overcomes Mesenchymal Stem Cells-Mediated Platinum Chemoresistance in Ovarian Cancer Cells in an ERK-Independent Fashion" Molecules 27, no. 3: 804. https://doi.org/10.3390/molecules27030804

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