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Pyrazolo[1,5a]pyrimidines as a new class of FUSE binding protein 1 (FUBP1) inhibitors

Stefanie Hauck1, Kerstin Hiesinger2, Sabrina Khageh Hosseini1

  • 1Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, Paul-Ehrlich-Straße 42-44, D-60596 Frankfurt/Main, Germany.

Bioorganic & Medicinal Chemistry
|October 13, 2016
PubMed

Insights

Researchers identified a novel pyrazolo[1,5a]pyrimidine compound that inhibits FUSE binding protein 1 (FUBP1), a key cancer-driving protein. This targeted chemotherapy approach shows promise in reducing cancer cell growth and inducing cell death.

Area of Science:

  • Molecular Biology
  • Medicinal Chemistry
  • Oncology

Background:

  • FUSE binding protein 1 (FUBP1) is a transcriptional regulator often overexpressed in cancers.
  • FUBP1's aberrant activity drives oncogenesis by disrupting cell cycle and apoptosis pathways.
  • Targeting FUBP1 presents a potential strategy for novel cancer chemotherapy.

Purpose of the Study:

  • To identify and optimize inhibitors of FUSE binding protein 1 (FUBP1).
  • To develop a new class of FUBP1-targeting molecules with therapeutic potential.
  • To investigate the efficacy of FUBP1 inhibitors in cancer models.

Main Methods:

  • Medium-throughput screening to identify initial hit compounds.
  • Chemical optimization of pyrazolo[1,5a]pyrimidine scaffolds.
  • Biophysical assays to assess FUBP1-FUSE DNA binding inhibition.
  • In vitro studies using hepatocellular carcinoma cells.

Main Results:

  • A novel class of pyrazolo[1,5a]pyrimidine-based FUBP1 inhibitors was generated.
  • Compound 6 demonstrated potent inhibition of FUBP1 binding to its FUSE DNA target (IC50 = 11.0 μM).
  • Hepatocellular carcinoma cells treated with compound 6 showed reduced proliferation and increased cell death.

Conclusions:

  • The identified pyrazolo[1,5a]pyrimidine derivatives represent a promising new avenue for FUBP1-targeted cancer therapy.
  • Compound 6 exhibits significant in vitro and cellular activity against hepatocellular carcinoma.
  • Further optimization of these inhibitors holds potential for enhanced therapeutic efficacy.
Keywords:
FUBP1Pyrazolo[1,5a]pyrimidineTranscriptional regulator

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