USP21 deubiquitinase promotes pancreas cancer cell stemness via Wnt pathway activation

Academic Article


  • © 2019 Hou et al. This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first six months after the full-issue publication date (see After six months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at The ubiquitin-specific protease (USP) family is the largest group of cysteine proteases. Cancer genomic analysis identified frequent amplification of USP21 (22%) in human pancreatic ductal adenocarcinoma (PDAC). USP21 overexpression correlates with human PDAC progression, and enforced expression of USP21 accelerates murine PDAC tumor growth and drives PanIN to PDAC progression in immortalized human pancreatic ductal cells. Conversely, depletion of USP21 impairs PDAC tumor growth. Mechanistically, USP21 deubiquitinates and stabilizes the TCF/LEF transcription factor TCF7, which promotes cancer cell stemness. Our work identifies and validates USP21 as a PDAC oncogene, providing a potential drug-gable target for this intractable disease.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Hou P; Ma X; Zhang Q; Wu CJ; Liao W; Li J; Wang H; Zhao J; Zhou X; Guan C
  • Start Page

  • 1361
  • End Page

  • 1366
  • Volume

  • 33
  • Issue

  • 19-20