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Microarray-based gene expression profiling reveals genes and pathways involved in the oncogenic function of REG3A on

Qianqian Xu1, Rong Fu1, Guoxiao Yin1

  • 1Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.

Gene
|January 1, 2016
PubMed

Insights

Regenerating islet-derived protein 3 alpha (REG3A) promotes pancreatic cancer growth by activating key genes and pathways like JAK1, STAT3, and TGFβ. This protein also influences immune functions, highlighting its role in pancreatic malignancies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genomics

Background:

  • Pancreatic cancer is a deadly malignancy with complex molecular underpinnings.
  • Regenerating islet-derived protein 3 alpha (REG3A) has been implicated in exacerbating pancreatic cancer.
  • The precise mechanisms by which REG3A influences pancreatic cancer progression remain unclear.

Purpose of the Study:

  • To elucidate the molecular mechanisms by which REG3A promotes pancreatic cancer progression.
  • To identify key genes and signaling pathways regulated by REG3A in pancreatic cancer cells.
  • To explore the regulatory network of REG3A in pancreatic cancer.

Main Methods:

  • Microarray analysis was used to identify differentially expressed genes (DEGs) in SW1990 pancreatic cancer cells.
  • Quantitative real-time PCR (qRT-PCR) and Western blotting were employed for validation.
  • KEGG pathway enrichment, GO function analysis, and protein-protein interaction network construction (using Cytoscape) were performed.

Main Results:

  • REG3A treatment in SW1990 cells led to the identification of 50 DEGs enriched in 11 pathways, including those related to proliferation, survival, angiogenesis, and invasion.
  • REG3A upregulates key genes such as JAK1, STAT3, IL10, FOXM1, KRAS, MYC, CyclinD1, and c-fos.
  • Activation of signaling pathways including TGFβ, PDGF, angiogenesis, and RAS was observed, similar to IL6 treatment.

Conclusions:

  • REG3A significantly contributes to pancreatic cancer cell growth and progression.
  • REG3A regulates pancreatic cancer via a network of genes including JAK1, STAT3, and KRAS, and pathways like TGFβ and angiogenesis.
  • REG3A also influences transcription factors with immune functions, suggesting a broader role in the tumor microenvironment.
Keywords:
Differentially expressed genesPancreatic cancerProliferationREG3A

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