Open Access

Metformin inhibits EV71‑induced pyroptosis by upregulating DEP domain‑containing mTOR‑interacting protein

  • Authors:
    • Xiaoyan Zhang
    • Chenxi Sun
    • Jinfang Hao
    • Li Cao
    • Xinyan Zhang
    • Jianping Du
    • Qian Han
  • View Affiliations

  • Published online on: June 29, 2023     https://doi.org/10.3892/etm.2023.12087
  • Article Number: 388
  • Copyright: © Zhang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Enterovirus 71 (EV71) infection is one of the main causes of severe hand, foot and mouth disease (HFMD), which is usually accompanied by a marked inflammatory response. The excessive inflammatory response has been implicated to serve an important role in EV71‑caused HFMD. Pyroptosis is a type of inflammatory programmed cell death. Therefore, a novel treatment strategy against EV71 infection could aim to alleviate the inflammatory response through inhibition of EV71‑induced pyroptosis. The present study revealed that metformin had this therapeutic potential. A cell model of EV71 infection was established, cell viability was measured by CCK8 assay, cell damage was measured by LDH release kit, and the dead and dying cells were excluded by propidium iodide staining. The intracellular levels of DEP domain‑containing mTOR interacting protein (DEPTOR) and pyroptosis‑associated molecules were measured by western blot analysis, the NLRP3 expression was assessed by immunofluorescence labeling, and virus titers in cell culture supernatants were determined by a cell culture infectious dose 50 assay. The results demonstrated that EV71 infection could induce pyroptosis in a time‑ and dose‑dependent manner, and metformin could inhibit EV71‑induced pyroptosis. The mechanism of metformin inhibiting EV71‑induced pyroptosis was explored next. Subsequent experiments indicated that metformin could increase the levels of DEPTOR, which were decreased by EV71. Finally, overexpression of DEPTOR in cells could reduce EV71‑induced pyroptosis. Overall, the present study demonstrated that metformin could exert a novel pharmacodynamic anti‑pyroptosis effect in the treatment of EV71 infection by upregulating DEPTOR expression.
View Figures
View References

Related Articles

Journal Cover

August-2023
Volume 26 Issue 2

Print ISSN: 1792-0981
Online ISSN:1792-1015

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Zhang X, Sun C, Hao J, Cao L, Zhang X, Du J and Han Q: Metformin inhibits EV71‑induced pyroptosis by upregulating DEP domain‑containing mTOR‑interacting protein. Exp Ther Med 26: 388, 2023
APA
Zhang, X., Sun, C., Hao, J., Cao, L., Zhang, X., Du, J., & Han, Q. (2023). Metformin inhibits EV71‑induced pyroptosis by upregulating DEP domain‑containing mTOR‑interacting protein. Experimental and Therapeutic Medicine, 26, 388. https://doi.org/10.3892/etm.2023.12087
MLA
Zhang, X., Sun, C., Hao, J., Cao, L., Zhang, X., Du, J., Han, Q."Metformin inhibits EV71‑induced pyroptosis by upregulating DEP domain‑containing mTOR‑interacting protein". Experimental and Therapeutic Medicine 26.2 (2023): 388.
Chicago
Zhang, X., Sun, C., Hao, J., Cao, L., Zhang, X., Du, J., Han, Q."Metformin inhibits EV71‑induced pyroptosis by upregulating DEP domain‑containing mTOR‑interacting protein". Experimental and Therapeutic Medicine 26, no. 2 (2023): 388. https://doi.org/10.3892/etm.2023.12087