Dergiler / Kommagene Biyoloji Dergisi / 2026 / Cilt: 9 Sayı: 1

MCF-7 Meme Kanseri Hücrelerinde Tümör Baskılayıcı miR-15a, miR-34a ve p53 Sinyalizasyonunun Kuersetin Aracılı Modülasyonu

Quercetin-Mediated Modulation of Tumor Suppressor miR-15a, miR-34a, and p53 Signaling in MCF-7 Breast Cancer Cells

Çiğdem Güngörmez(Siirt Üniversitesi Tıp Fakültesii)0000-0001-7867-5356
Zeynep Çelik(HARRAN ÜNİVERSİTESİ)0000-0002-2142-4342
Büşra Ergin(HARRAN ÜNİVERSİTESİ)0000-0003-0588-619X
Sayfa
80–85
Yayın Tarihi
2025-06-30
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Bu bulgular, kuersetin gibi diyet fitokimyasallarının miRNA ekspresyonunu düzenleyerek ve p53 yolunu hedefleyerek terapötik potansiyele sahip olabileceğini düşündürmektedir.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Meme kanseri, küresel olarak kadınlarda en yaygın kanser türlerinden biri olmaya devam etmekte ve kanserle ilişkili ölümlere önemli ölçüde sebep olmaktadır.
📊
Temel Bulgular & Veri:Tedavideki gelişmelere rağmen, birçok vaka kemoterapi, radyoterapi ve hormonal tedavilere direnç göstermeye devam etmekte ve bu da sıklıkla ilaç direnci, yüksek tekrarlama oranları ve ciddi yan etkilerle sonuçlanmaktadır.
💡
Sonuç & Katkı:Bu bulgular, kuersetin gibi diyet fitokimyasallarının miRNA ekspresyonunu düzenleyerek ve p53 yolunu hedefleyerek terapötik potansiyele sahip olabileceğini düşündürmektedir.
🔬Tür:Deneysel Tarla Denemesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Flavonoidler · kanser · kodlama yapmayan RNAlar

Özet

Meme kanseri, küresel olarak kadınlarda en yaygın kanser türlerinden biri olmaya devam etmekte ve kanserle ilişkili ölümlere önemli ölçüde sebep olmaktadır. Tedavideki gelişmelere rağmen, birçok vaka kemoterapi, radyoterapi ve hormonal tedavilere direnç göstermeye devam etmekte ve bu da sıklıkla ilaç direnci, yüksek tekrarlama oranları ve ciddi yan etkilerle sonuçlanmaktadır. Bu nedenle, doğal gıda bileşenlerinin kanser önleme ve tedavisindeki rolü modern tıpta giderek daha fazla ilgi görmektedir. Bu çalışma, bir fitokimyasal bileşik olan kuersetin ve meme kanseri hücre hattı MCF-7 üzerindeki etkilerine odaklanmaktadır. Çalışmada, özellikle, gen ifadesini transkripsiyon sonrası düzeyde düzenlediği bilinen mikroRNA'lar (miRNA) olan miR-15a ve miR-34a'nın ve apoptozda kritik rol oynayan P53 geninin ifadesindeki değişiklikler araştırılmıştır. Analiz, kantitatif polimeraz zincir reaksiyonu (qPCR) ve Western blot teknikleri kullanılarak gerçekleştirilmiştir. Sonuçlar, 40 µM ve 80 µM konsantrasyonlarında kuersetin tedavisinin P53 gen ekspresyonunda sırasıyla 1,34 kat ve 2,73 kat artışa yol açtığını göstermiştir. Ek olarak, tümör baskılayıcı miRNA miR-15a aynı kuersetin konsantrasyonlarında 1,48 kat ve 1,69 kat ekspresyon değişiklikleri olduğu saptanmıştır. Benzer şekilde, miR-34a ekspresyon seviyeleri sırasıyla 40 µM ve 80 µM'de 1,23 kat ve 1,39 kat artmıştır. Bu bulgular, kuersetin gibi diyet fitokimyasallarının miRNA ekspresyonunu düzenleyerek ve p53 yolunu hedefleyerek terapötik potansiyele sahip olabileceğini düşündürmektedir. Sonuç olarak, kuersetin meme kanseri için umut verici bir doğal terapötik ajan olarak ortaya çıkmakta ve etkinliğini doğrulamak ve kombinasyon terapilerinin bir parçası olarak potansiyelini keşfetmek için daha fazla in vivo çalışma ve klinik denemeyi gerektirmektedir.

Abstract

Breast cancer remains one of the most prevalent types of cancer among women globally, contributing significantly to cancer-related mortality. Despite advancements in treatment, many cases continue to exhibit resistance to chemotherapy, radiotherapy, and hormonal therapies, often resulting in drug resistance, high recurrence rates, and severe side effects. Consequently, the role of the natural food components in cancer prevention and treatment is gaining increasing attention in modern medicine. This study focuses on quercetin, a phytochemical compound, and its effects on the breast cancer cell line MCF-7. Specifically, the study has investigated changes in the expression of miR-15a and miR-34a—microRNAs (miRNAs) known to regulate gene expression at the post-transcriptional level—and the P53 gene, which is critically involved in apoptosis. The analysis was performed using quantitative polymerase chain reaction (qPCR) and Western blot techniques. The results demonstrated that quercetin treatment at concentrations of 40 µM and 80 µM led to a 1.34-fold and 2.73-fold increase in P53 gene expression, respectively. Additionally, the tumor suppressor miRNA miR-15a showed expression changes of 1.48-fold and 1.69-fold at the same quercetin concentrations. Similarly, miR-34a expression levels increased by 1.23-fold and 1.39-fold at 40 µM and 80 µM, respectively. These findings suggest that dietary phytochemicals, such as quercetin, may have therapeutic potential by modulating miRNA expression and targeting the p53 pathway. In conclusion, quercetin emerges as a promising natural therapeutic agent for breast cancer, warranting further in vivo studies and clinical trials to confirm its efficacy and explore its potential as a part of combination therapies.

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Bu Makaleye Atıf Yap

Güngörmez, Ç., Aktas, H. G., Çelik, Z., Ergin, B. (2025). MCF-7 Meme Kanseri Hücrelerinde Tümör Baskılayıcı miR-15a, miR-34a ve p53 Sinyalizasyonunun Kuersetin Aracılı Modülasyonu. Kommagene Biyoloji Dergisi, Cilt: 9 Sayı: 1, 80–85. https://doi.org/10.31594/commagene.1662649

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  51. Imani, S., Wei, C., Cheng, J., Khan, M.A., Fu, S., Yang, L.,., & Fu, J. (2016). MicroRNA-34a targets epithelial to mesenchymal transition-inducing transcription factors (EMT-TFs) and inhibits breast cancer cell migration and invasion. Oncotarget, 7(8), 1–12. https://doi.org/10.18632/oncotarget.15214
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  53. Kang, L., Mao, J., Tao, Y., Song, B., Ma, W., Lu, Y.,., & Li, L. (2015). Retracted: Micro RNA‐34a suppresses the breast cancer stem cell‐like characteristics by downregulating Notch1 pathway. Cancer Science, 106(6), 700-708. https://doi.org/10.1111/cas.12656
  54. Kawaguchi, T., Yan, L., Qi, Q., Peng, X., Gabriel, E.M., Young, J.,. & Takabe, K. (2017). Overexpression of suppressive microRNAs, miR-30a and miR-200c are associated with improved survival of breast cancer patients. Scientific Reports, 7(1), 15945. https://doi.org/10.1038/s41598-017-16112-y
  55. Li, Y., Yao, J., Han, C., Yang, J., Chaudhry, M.T., Wang, S.,., & Yin, Y. (2020). Quercetin, inflammation and immunity. Nutrients, 12(2), 457. https://doi.org/10.3390/nu12020457
  56. Misso, G., Di Martino, M.T., De Rosa, G., Farooqi, A.A., Lombardi, A., Campani, V.,., & Caraglia, M. (2014). miR-34: A new weapon against cancer? Molecular Therapy - Nucleic Acids, 3, e194. https://doi.org/10.1038/mtna.2014.47
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  58. Raver-Shapira, N., Marciano, E., Meiri, E., Spector, Y., Rosenfeld, N., Moskovits, N.,., & Oren, M. (2007). Transcriptional activation of miR-34a contributes to p53-mediated apoptosis. Molecular Cell, 26(5), 731–743. https://doi.org/10.1016/j.molcel.2007.05.017
  59. Zhang, J.T., Chen, J., Ruan, H.C., Li, F. X., Pang, S., Xu, Y. J.,., & Wu, X.H. (2021). Microribonucleic Acid-15a-5p alters Adriamycin resistance in breast cancer cells by targeting cell division cycle-associated protein 4. Cancer Management and Research, 13, 8425–8434.