Curcumin activates NLRC4, AIM2, and IFI16 inflammasomes and induces pyroptosis by up-regulated ISG3 transcript factor in acute myeloid leukemia cell lines

Cancer Biol Ther. 2022 Dec 31;23(1):328-335. doi: 10.1080/15384047.2022.2058862.

Abstract

Curcumin, the primary bioactive component isolated from turmeric, has been found to possess a variety of biological functions, including anti-leukemia activity. However, the effect of curcumin in different leukemia cells vary. In this study, we demonstrated that curcumin induced the expression of AIM2, IFI16, and NLRC4 inflammasomes in leukemia cells U937 by increasing the expression levels of ISG3 transcription factor complex, which activated caspase 1, promoted cleavage of GSDMD, and induced pyroptosis. We also found that pyroptosis executor GSDMD was not expressed in two curcumin-insensitive cells HL60 and K562 cells. In addition, exogenous overexpression of GSDMD by lentiviral transduction in K562 cells increased the anti-cancer activity of curcumin, and inhibiting the expression of GSDMD by shRNA enhanced U937 cells to resist curcumin. The results showed that inducing pyroptosis is a novel mechanism underlying the anti-leukemia effects of curcumin.

Keywords: Curcumin; GSDMD; inflammasome; leukemia; pyroptosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • CARD Signaling Adaptor Proteins / metabolism
  • Calcium-Binding Proteins
  • Curcumin* / pharmacology
  • DNA-Binding Proteins / metabolism
  • Humans
  • Inflammasomes / metabolism
  • Leukemia, Myeloid, Acute* / drug therapy
  • Leukemia, Myeloid, Acute* / genetics
  • NLR Family, Pyrin Domain-Containing 3 Protein / genetics
  • NLR Family, Pyrin Domain-Containing 3 Protein / metabolism
  • Nuclear Proteins / genetics
  • Nuclear Proteins / metabolism
  • Phosphoproteins / metabolism
  • Pyroptosis / genetics
  • U937 Cells

Substances

  • AIM2 protein, human
  • CARD Signaling Adaptor Proteins
  • Calcium-Binding Proteins
  • DNA-Binding Proteins
  • Inflammasomes
  • NLR Family, Pyrin Domain-Containing 3 Protein
  • NLRC4 protein, human
  • Nuclear Proteins
  • Phosphoproteins
  • IFI16 protein, human
  • Curcumin

Grants and funding

This work was supported by the Natural Science Foundation of China (82160037, 82160692, 32100729, 32071223), Apply Research Cultivation Program of Jiangxi Provincial Department of Science and Technology (20181BBG78072), Traditional Chinese Medicine Scientific and Technological Project of Jiangxi Provincial Health and Family Planning Commission (2017A268).