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RDM1 gene overexpression represents a therapeutic target in papillary thyroid carcinoma

Wei Li1, Qing Huang2, Danyang Sun3

  • 1Department of Nuclear MedicineTianjin Medical University General Hospital, Tianjin, People's Republic of China liwei01@tmu.edu.cn.

Endocrine Connections
|September 24, 2017
PubMed

Insights

RAD52 motif containing 1 (RDM1) is highly expressed in papillary thyroid carcinoma (PTC). Inhibiting RDM1 impairs cell proliferation, increases apoptosis, and arrests the cell cycle in PTC, suggesting its role in thyroid cancer progression.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • RAD52 motif containing 1 (RDM1) encodes a protein crucial for DNA repair and recombination.
  • The specific role of RDM1 in papillary thyroid carcinoma (PTC) remains largely uninvestigated.
  • Understanding RDM1's function in PTC is vital for potential therapeutic strategies.

Purpose of the Study:

  • To investigate the expression and functional significance of RDM1 in papillary thyroid carcinoma.
  • To determine the impact of RDM1 knockdown on PTC cell behavior, including proliferation, cell cycle, and apoptosis.

Main Methods:

  • Immunohistochemistry and quantitative real-time PCR (qRT-PCR) were used to assess RDM1 expression in PTC tissues and cell lines.
  • Lentivirus-mediated small interfering RNAs (siRNAs) were employed to achieve RDM1 knockdown in K1 and TPC1 cells.
  • Cell proliferation, cell cycle distribution, and apoptosis were analyzed using high-content screening, flow cytometry, and MTT assays.

Main Results:

  • RDM1 expression was significantly elevated in PTC tissues compared to adjacent non-cancerous tissues.
  • RDM1 mRNA was detected in thyroid cancer cell lines.
  • RDM1 knockdown led to impaired cell proliferation, increased apoptosis, and G2/M phase cell cycle arrest.

Conclusions:

  • RDM1 is highly expressed in papillary thyroid carcinoma and its cell lines.
  • RDM1 plays a significant role in regulating cell proliferation, cell cycle progression, and apoptosis in human PTC.
  • Targeting RDM1 may represent a potential therapeutic avenue for papillary thyroid carcinoma.
Keywords:
RDM1lentiviruspapillary thyroid carcinomasiRNAthyroid cancer

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