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REGγ is associated with multiple oncogenic pathways in human cancers

Jing He1, Long Cui, Yu Zeng

  • 1Institute of Biomedical Sciences, East China Normal University, Shanghai, China.

BMC Cancer
|February 25, 2012
PubMed
Abstract

Insights

Proteasome activator REGγ is overexpressed in four cancer types, linking it to cancer pathways like p53 and Myc. This suggests REGγ

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Recent research implicates the proteasome activator REGγ in cancer progression.
  • Limited knowledge exists regarding REGγ targets and its association with specific cancers and molecular pathways.

Purpose of the Study:

  • To investigate the expression profile of REGγ across various cancer types.
  • To identify cancer-related pathways associated with REGγ.
  • To explore REGγ as a potential biomarker for cancer.

Main Methods:

  • Immunohistochemistry (IHC) was used to analyze REGγ protein expression in four cancer types.
  • Meta-analysis of public microarray data (GEO database) and statistical analysis identified differential REGγ expression.
  • Pearson's correlation coefficient and Ingenuity Core analysis identified genes correlated with REGγ and their functional pathways.
  • RT-PCR and IHC validated findings in cell lines and human colon cancer tissues.

Main Results:

  • Overexpression of REGγ was confirmed in four distinct cancer types via micro-tissue array analysis.
  • Meta-analysis of public data corroborated elevated REGγ gene expression in these cancers.
  • Genes significantly correlated with REGγ included those in the p53 and Myc pathways, among others.
  • Quantitative RT-PCR results largely supported the predicted correlations.

Conclusions:

  • This study reveals novel insights into REGγ gene expression patterns and its association with multiple cancer-related pathways.
  • The findings suggest significant pathogenic roles for REGγ in various cancers.
  • REGγ is implicated as a potential diagnostic or prognostic marker for cancer.

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