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Non-Invasive Ultrasound Assessment of Endometrial Cancer Progression in Pax8-Directed Deletion of the Tumor Suppressors Arid1a and Pten in Mice
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The long-noncoding RNA SOCS2-AS1 suppresses endometrial cancer progression by regulating AURKA degradation

Fangfang Jian1, Xiaoxia Che1,2, Jingjing Zhang1

  • 1Department of obstetrics and gynecology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.

Cell Death & Disease
|April 7, 2021
PubMed

Insights

A novel tumor suppressor, long-noncoding RNA SOCS2-AS1, is downregulated in endometrial cancer (EC). Its reduced expression correlates with poor prognosis, and it targets Aurora kinase A (AURKA) for degradation.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Aberrant long-noncoding RNA (lncRNA) expression is implicated in endometrial cancer (EC) pathogenesis.
  • Identifying novel lncRNAs involved in EC is crucial for understanding disease mechanisms and developing therapeutic strategies.

Purpose of the Study:

  • To investigate the role of the lncRNA SOCS2-AS1 as a potential tumor suppressor in endometrial cancer.
  • To elucidate the molecular mechanism underlying SOCS2-AS1's function in EC.

Main Methods:

  • Quantitative real-time PCR (qRT-PCR) to assess SOCS2-AS1 expression levels in EC tissues.
  • In situ hybridization and subcellular fractionation to determine SOCS2-AS1 localization.
  • RNA pull-down assay and mass spectrometry to identify SOCS2-AS1-binding proteins.
  • Functional assays to evaluate the impact of SOCS2-AS1 on EC cell proliferation, cell cycle, and apoptosis.

Main Results:

  • SOCS2-AS1 was significantly downregulated in EC tissues compared to normal tissues.
  • Reduced SOCS2-AS1 expression correlated with advanced clinical stage and poorer patient prognosis.
  • Overexpression of SOCS2-AS1 inhibited EC cell proliferation, induced cell-cycle arrest, and promoted apoptosis.
  • SOCS2-AS1 was found to bind to Aurora kinase A (AURKA) and promote its degradation via the ubiquitin-proteasome pathway.

Conclusions:

  • SOCS2-AS1 functions as a tumor suppressor in endometrial cancer.
  • SOCS2-AS1 may serve as a valuable prognostic biomarker for EC patients.
  • SOCS2-AS1 could be a potential therapeutic target or biomarker for AURKA-inhibitor treatments in EC.

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