SC-60, a dimer-based sorafenib derivative, shows a better anti-hepatocellular carcinoma effect than sorafenib in a preclinical hepatocellular carcinoma model

Mol Cancer Ther. 2014 Jan;13(1):27-36. doi: 10.1158/1535-7163.MCT-13-0595. Epub 2013 Nov 25.

Abstract

Sorafenib is the first approved targeted therapeutic reagent for hepatocellular carcinoma. Here, we report that SC-60, a dimer-based sorafenib derivative, overcomes the resistance of sorafenib and shows a better anti-hepatocellular carcinoma effect in vitro and in vivo. SC-60 substantially increased SH2 domain-containing phosphatase 1 (SHP-1) phosphatase activity in hepatocellular carcinoma cells and purified SHP-1 proteins, suggesting that SC-60 affects SHP-1 directly. Molecular docking and truncated mutants of SHP-1 further confirmed that SC-60 interferes with the inhibitory N-SH2 domain to relieve the closed catalytic protein tyrosine phosphatase domain of SHP-1. Deletion of N-SH2 domain (dN1) or point mutation (D61A) of SHP-1 abolished the effect of SC-60 on SHP-1, p-STAT3, and apoptosis. Importantly, SC-60 exhibited significant survival benefits compared with sorafenib in a hepatocellular carcinoma orthotopic model via targeting the SHP-1/STAT3-related signaling pathway. In summary, dimer derivative of sorafenib, SC-60, is a SHP-1 agonist and may be a potent reagent for hepatocellular carcinoma-targeted therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis
  • Carcinoma, Hepatocellular / drug therapy*
  • Carcinoma, Hepatocellular / genetics
  • Carcinoma, Hepatocellular / pathology
  • Catalytic Domain / genetics
  • Cell Line, Tumor
  • Humans
  • Liver Neoplasms / drug therapy*
  • Liver Neoplasms / genetics
  • Liver Neoplasms / pathology
  • Niacinamide / administration & dosage
  • Niacinamide / analogs & derivatives*
  • Niacinamide / chemistry
  • Phenylurea Compounds / administration & dosage*
  • Phenylurea Compounds / chemistry
  • Point Mutation
  • Protein Tyrosine Phosphatase, Non-Receptor Type 6 / genetics
  • STAT3 Transcription Factor / genetics
  • STAT3 Transcription Factor / metabolism
  • Signal Transduction / drug effects
  • Sorafenib
  • Xenograft Model Antitumor Assays

Substances

  • Phenylurea Compounds
  • STAT3 Transcription Factor
  • STAT3 protein, human
  • Niacinamide
  • Sorafenib
  • PTPN6 protein, human
  • Protein Tyrosine Phosphatase, Non-Receptor Type 6