UHRF1 promotes aerobic glycolysis and proliferation via suppression of SIRT4 in pancreatic cancer

Cancer Lett. 2019 Jun 28:452:226-236. doi: 10.1016/j.canlet.2019.03.024. Epub 2019 Mar 22.

Abstract

UHRF1 (ubiquitin like with plant homeodomain and ring finger domains 1) is an epigenetic modifier that is overexpressed in some cancers, including pancreatic cancer, and mediates silencing of tumor suppressor genes. However, the role of UHRF1 in regulating pancreatic cancer metabolism and metastasis is not clear. In the present study, we demonstrated that silencing UHRF1 significantly inhibited aerobic glycolysis in pancreatic cancer cells. Furthermore, we demonstrated that UHRF1 knockdown decreased hypoxia inducible factor (HIF)1α levels and HIF1α targeted glycolytic genes. The Cancer Genome Atlas dataset analysis supported this observation. The Sirtuin (SIRT) family members regulate aerobic glycolysis in many cancers. We analyzed the correlation between UHRF1 and SIRT3-5 expression and found a significant negative correlation between UHRF1 and SIRT4. Further transcriptional and functional analysis demonstrates that SIRT4 is a downstream target of UHRF1 and negatively regulated aerobic glycolysis, cell proliferation and tumor growth. Our study identified a novel UHRF1/SIRT4 axis in regulation of pancreatic cancer cell proliferation, metabolism, and metastasis.

Keywords: Glycolysis; HIF1α; Pancreatic cancer; SIRT4; UHRF1.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis / physiology
  • CCAAT-Enhancer-Binding Proteins / genetics
  • CCAAT-Enhancer-Binding Proteins / metabolism*
  • Cell Line, Tumor
  • Cell Proliferation / physiology
  • Glycolysis / genetics
  • Glycolysis / physiology*
  • Humans
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism
  • Mitochondrial Proteins / antagonists & inhibitors*
  • Neoplasm Metastasis / pathology
  • Oxygen Consumption / physiology
  • Pancreatic Neoplasms / pathology*
  • Sirtuins / antagonists & inhibitors*
  • Ubiquitin-Protein Ligases / genetics
  • Ubiquitin-Protein Ligases / metabolism*

Substances

  • CCAAT-Enhancer-Binding Proteins
  • HIF1A protein, human
  • Hypoxia-Inducible Factor 1, alpha Subunit
  • Mitochondrial Proteins
  • UHRF1 protein, human
  • Ubiquitin-Protein Ligases
  • SIRT4 protein, human
  • Sirtuins