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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition

Published on: October 9, 2014

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Long noncoding RNA SPRY4-IT1 promotes malignant development of colorectal cancer by targeting epithelial-mesenchymal

Dong Cao1, Qiong Ding1, Wubin Yu1

  • 1Department of General Surgery, The People's Hospital of Putuo, Zhoushan.

Oncotargets and Therapy
|September 14, 2016
PubMed

Insights

Long noncoding RNA SPRY4 intronic transcript 1 (SPRY4-IT1) is upregulated in colorectal cancer (CRC) and linked to advanced stages. SPRY4-IT1 inhibition suppresses CRC cell growth and metastasis, suggesting it as a prognostic marker.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • The role of long noncoding RNA SPRY4 intronic transcript 1 (SPRY4-IT1) in colorectal cancer (CRC) is not well understood.
  • SPRY4-IT1's clinical significance and biological functions in CRC require further investigation.

Purpose of the Study:

  • To investigate the expression and functional role of SPRY4-IT1 in colorectal cancer.
  • To evaluate SPRY4-IT1 as a potential prognostic biomarker and therapeutic target for CRC.

Main Methods:

  • Quantitative real-time PCR to assess SPRY4-IT1 expression in CRC tissues, serum, and cells.
  • Correlation analysis between SPRY4-IT1 expression and clinical parameters (e.g., TNM stage) in 84 CRC patients.
  • In vitro functional assays (cell proliferation, migration, invasion, cell cycle analysis) after SPRY4-IT1 knockdown.
  • Analysis of epithelial-mesenchymal transition (EMT)-related gene expression.

Main Results:

  • SPRY4-IT1 was significantly upregulated in CRC tissues, serum, and cells compared to normal controls.
  • Higher SPRY4-IT1 expression correlated with advanced Tumor Node Metastasis (TNM) stage.
  • Multivariate analysis identified SPRY4-IT1 as an independent predictor of overall survival in CRC patients.
  • Knockdown of SPRY4-IT1 inhibited CRC cell proliferation, migration, and invasion, and induced cell cycle arrest.
  • SPRY4-IT1 alteration modulated the expression of EMT-related genes.

Conclusions:

  • SPRY4-IT1 acts as an oncogenic regulator in colorectal cancer.
  • SPRY4-IT1 is a potential prognostic marker for overall survival in CRC patients.
  • SPRY4-IT1 represents a promising therapeutic target for colorectal cancer treatment.
Keywords:
SPRY4-IT1colorectal cancerlong noncoding RNAsurvival

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