4.5 Article

METTL3 increases cisplatin chemosensitivity of cervical cancer cells via downregulation of the activity of RAGE

Journal

MOLECULAR THERAPY-ONCOLYTICS
Volume 22, Issue -, Pages 245-255

Publisher

CELL PRESS
DOI: 10.1016/j.omto.2021.05.013

Keywords

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Funding

  1. National Natural Science Foundation of China [81974282]
  2. Medical Science and Technology Project of Zhejiang Province [2019RC212]

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METTL3 overexpression in cervical cancer cells enhances sensitivity to cisplatin and inhibits tumor growth by downregulating RAGE expression.
Cervical cancer is the most common gynecologic malignancy worldwide. Methyltransferase-like 3 (METTL3) is involved in tumorigenesis; however, it is unclear whether METTL3 plays a potential role in regulating cisplatin (DDP) resistance. Therefore, the role of METTL3 in the regulation of cisplatin sensitivity in cervical cancer cells was determined. Our immunohistochemistry (IHC) data showed that METTL3 was highly expressed in para-cancerous compared with cervical cancer tissues. Furthermore, METTL3 overexpression inhibited viability and increased cisplatin sensitivity of cervical cancer cells in vitro. Overexpression of METTL3 inhibited tumor growth in vivo. IHC results showed that the receptor for advanced glycation and products (RAGE) had higher expression levels in cervical cancer tissues. RAGE downregulation increased cell sensitivity to cisplatin treatment. Moreover, the combination of FPS-ZM1 with cisplatin was more effective in inhibiting cell viability as compared with FPS-ZM1 or cisplatin only. Additionally, METTL3 reduced RAGE expression in cervical cancer cells. Overexpression of METTL3 downregulated RAGE expression and caused more sensitivity to cisplatin treatment in the SiHa-DDP cell line. METTL3 inhibited cell viability and increased apoptosis as well as enhanced the sensitivity of cisplatin via downregulating RAGE expression in cervical cancer cells.

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