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Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
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MicroRNA-212 functions as a tumor-suppressor in human non-small cell lung cancer by targeting SOX4

Tingting Tang1, Liting Huan2, Shujuan Zhang2

  • 1Department of Hematology and Oncology, The Affiliated Hospital of Hangzhou Normal University, Gongshu, Hangzhou, Zhejiang 310015, P.R. China.

Oncology Reports
|August 10, 2017
PubMed

Insights

Reduced miR-212 expression is linked to non-small cell lung cancer (NSCLC) progression and metastasis. Restoring miR-212 inhibits NSCLC cell invasion and EMT by targeting SOX4, suggesting its potential as a therapeutic target.

Area of Science:

  • Molecular Oncology
  • Cancer Biology
  • MicroRNA Therapeutics

Background:

  • Aberrant microRNA (miRNA) expression is implicated in non-small cell lung cancer (NSCLC) pathogenesis.
  • The specific roles and regulatory mechanisms of many miRNAs in NSCLC remain incompletely understood.
  • Understanding miRNA functions is crucial for developing novel diagnostic and therapeutic strategies for NSCLC.

Purpose of the Study:

  • To investigate the role and mechanism of miR-212 in non-small cell lung cancer (NSCLC).
  • To determine if miR-212 can serve as a prognostic biomarker for NSCLC patients.
  • To elucidate the downstream targets and signaling pathways regulated by miR-212 in NSCLC.

Main Methods:

  • Quantitative real-time PCR to assess miR-212 expression in NSCLC tissues and cell lines.
  • Bioinformatic analysis and luciferase reporter assays to identify miR-212 targets.
  • In vitro cell migration, invasion, and epithelial-mesenchymal transition (EMT) assays following miR-212 modulation.

Main Results:

  • Downregulated miR-212 expression was observed in NSCLC tissues and correlated with advanced TNM stage and lymph node metastasis.
  • Overexpression of miR-212 suppressed NSCLC cell migration, invasion, and EMT, while its downregulation promoted these processes.
  • miR-212 directly targets SOX4, inhibiting EMT progression; miR-212 was negatively correlated with SOX4, which was upregulated in NSCLC.

Conclusions:

  • miR-212 functions as a tumor suppressor in NSCLC by inhibiting EMT and metastasis through the SOX4 signaling pathway.
  • Reduced miR-212 expression is a significant independent prognostic marker for predicting 5-year survival in NSCLC patients.
  • miR-212 represents a potential therapeutic target and prognostic biomarker for non-small cell lung cancer.

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