Dipeptidylpeptidase 4 promotes survival and stemness of acute myeloid leukemia stem cells

Cell Rep. 2023 Feb 28;42(2):112105. doi: 10.1016/j.celrep.2023.112105. Epub 2023 Feb 17.

Abstract

Leukemic-stem-cell-specific targeting may improve the survival of patients with acute myeloid leukemia (AML) by avoiding the ablative effects of standard regimens on normal hematopoiesis. Herein, we perform an unbiased screening of compounds targeting cell surface proteins and identify clinically used DPP4 inhibitors as strong suppressors of AML development in both murine AML models and primary human AML cells xenograft model. We find in retrovirus-induced AML mouse models that DPP4-deficient AML cell-transplanted mice exhibit delay and reversal of AML development, whereas deletion of DPP4 has no significant effect on normal hematopoiesis. DPP4 activates and sustains survival of AML stem cells that are critical for AML development in both human and animal models via binding with Src kinase and activation of nuclear factor κB (NF-κB) signaling. Thus, inhibition of DPP4 is a potential therapeutic strategy against AML development through suppression of survival and stemness of AML cells.

Keywords: AML; CP: Cancer; DPP4; DPP4 inhibitors; apoptosis; cell surface protein; hematopoietic stem cell; leukemic stem cell; linagliptin; normal hematopoiesis; stemness.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Dipeptidyl Peptidase 4* / metabolism
  • Disease Models, Animal
  • Humans
  • Leukemia, Myeloid, Acute* / metabolism
  • Mice
  • Signal Transduction
  • Stem Cells / metabolism

Substances

  • Dipeptidyl Peptidase 4
  • DPP4 protein, human
  • Dpp4 protein, mouse