Acta Pharmaceutica Sinica B (Oct 2021)

Discovery of a subtype-selective, covalent inhibitor against palmitoylation pocket of TEAD3

  • Tian Lu,
  • Yong Li,
  • Wenchao Lu,
  • TWGM Spitters,
  • Xueyu Fang,
  • Jun Wang,
  • Simian Cai,
  • Jing Gao,
  • Yanting Zhou,
  • Zhe Duan,
  • Huan Xiong,
  • Liping Liu,
  • Qi Li,
  • Hualiang Jiang,
  • Kaixian Chen,
  • Hu Zhou,
  • Hua Lin,
  • Huijin Feng,
  • Bing Zhou,
  • Christopher L. Antos,
  • Cheng Luo

Journal volume & issue
Vol. 11, no. 10
pp. 3206 – 3219

Abstract

Read online

The TEA domain (TEAD) family proteins (TEAD1‒4) are essential transcription factors that control cell differentiation and organ size in the Hippo pathway. Although the sequences and structures of TEAD family proteins are highly conserved, each TEAD isoform has unique physiological and pathological functions. Therefore, the development and discovery of subtype selective inhibitors for TEAD protein will provide important chemical probes for the TEAD-related function studies in development and diseases. Here, we identified a novel TEAD1/3 covalent inhibitor (DC-TEADin1072) with biochemical IC50 values of 0.61 ± 0.02 and 0.58 ± 0.12 μmol/L against TEAD1 and TEAD3, respectively. Further chemical optimization based on DC-TEAD in 1072 yielded a selective TEAD3 inhibitor DC-TEAD3in03 with the IC50 value of 0.16 ± 0.03 μmol/L, which shows 100-fold selectivity over other TEAD isoforms in activity-based protein profiling (ABPP) assays. In cells, DC-TEAD3in03 showed selective inhibitory effect on TEAD3 in GAL4-TEAD (1–4) reporter assays with the IC50 value of 1.15 μmol/L. When administered to zebrafish juveniles, experiments showed that DC-TEAD3in03 reduced the growth rate of zebrafish caudal fins, indicating the importance of TEAD3 activity in controlling proportional growth of vertebrate appendages.

Keywords