Functional cooperation between KCa3.1 and TRPC1 channels in human breast cancer: Role in cell proliferation and patient prognosis
| العنوان: | Functional cooperation between KCa3.1 and TRPC1 channels in human breast cancer: Role in cell proliferation and patient prognosis |
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| المؤلفون: | Marie Potier-Cartereau, Malika Faouzi, Frédéric Hague, Anne-Sophie Ay, Ahmed Ahidouch, Halima Ouadid-Ahidouch, Dirk Geerts |
| المساهمون: | Other departments, Pediatrics, Hematology laboratory |
| المصدر: | Oncotarget, 7(24), 36419-36435. Impact Journals Oncotarget, 7(24), 36419-36435. Impact Journals LLC Oncotarget Faouzi, M, Hague, F, Geerts, D, Ay, A-S, Potier-Cartereau, M, Ahidouch, A & Ouadid-Ahidouch, H 2016, ' Functional cooperation between KCa3.1 and TRPC1 channels in human breast cancer : Role in cell proliferation and patient prognosis ', Oncotarget, vol. 7, no. 24, pp. 36419-36435 . https://doi.org/10.18632/oncotarget.9261 |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0301 basic medicine, Cell cycle checkpoint, TRPC1, Breast Neoplasms, Kaplan-Meier Estimate, 03 medical and health sciences, breast cancer, SDG 3 - Good Health and Well-being, Downregulation and upregulation, Humans, Medicine, Lipid raft, TRPC Cation Channels, Gene knockdown, calcium, Cell growth, business.industry, Gene Expression Profiling, Cancer, Cell cycle, Intermediate-Conductance Calcium-Activated Potassium Channels, Prognosis, medicine.disease, G1 Phase Cell Cycle Checkpoints, Gene Expression Regulation, Neoplastic, cell proliferation, 030104 developmental biology, Oncology, Immunology, MCF-7 Cells, Cancer research, Female, RNA Interference, KCa3.1, business, Intracellular, Research Paper |
| الوصف: | Intracellular Ca2+ levels are important regulators of cell cycle and proliferation. We, and others, have previously reported the role of KCa3.1 (KCNN4) channels in regulating the membrane potential and the Ca2+ entry in association with cell proliferation. However, the relevance of KC3.1 channels in cancer prognosis as well as the molecular mechanism of Ca2+ entry triggered by their activation remain undetermined. Here, we show that RNAi-mediated knockdown of KCa3.1 and/or TRPC1 leads to a significant decrease in cell proliferation due to cell cycle arrest in the G1 phase. These results are consistent with the observed upregulation of both channels in synchronized cells at the end of G1 phase. Additionally, knockdown of TRPC1 suppressed the Ca2+ entry induced by 1-EBIO-mediated KCa3.1 activation, suggesting a functional cooperation between TRPC1 and KCa3.1 in the regulation of Ca2+ entry, possibly within lipid raft microdomains where these two channels seem to co-localize. We also show significant correlations between KCa3.1 mRNA expression and poor patient prognosis and unfavorable clinical breast cancer parameters by mining large datasets in the public domain. Together, these results highlight the importance of KCa3.1 in regulating the proliferative mechanisms in breast cancer cells as well as in providing a promising novel target in prognosis and therapy. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1949-2553 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13b42b10e2f52e7ac2c88e3b8ba87d2b https://doi.org/10.18632/oncotarget.9261 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....13b42b10e2f52e7ac2c88e3b8ba87d2b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19492553 |
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