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Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Death+Differ 2020 ; 27 (2): 466-481 Nephropedia Template TP
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Magnesium protects against sepsis by blocking gasdermin D N-terminal-induced pyroptosis #MMPMID31209359
Wang D; Zheng J; Hu Q; Zhao C; Chen Q; Shi P; Chen Q; Zou Y; Zou D; Liu Q; Pei J; Wu X; Gao X; Ren J; Lin Z
Cell Death Differ 2020[Feb]; 27 (2): 466-481 PMID31209359show ga
Hypomagnesemia is a significant risk factor for critically ill patients to develop sepsis, a life-threatening disease with a mortality rate over 25%. Our clinic data analysis showed that hypomagnesemia is associated with a decreased monocyte count in septic patients. At the cellular level, we found that Mg(2+) inhibits pyroptosis. Specifically, Mg(2+) limits the oligomerization and membrane localization of gasdermin D N-terminal (GSDMD-NT) upon the activation of either the canonical or noncanonical pyroptotic pathway. Mechanistically, we demonstrated that Ca(2+) influx is a prerequisite for the function of GSDMD-NT. Mg(2+) blocks Ca(2+) influx by inhibiting the ATP-gated Ca(2+) channel P2X7, thereby impeding the function of GSDMD-NT and inhibiting lipopolysaccharide (LPS)-induced noncanonical pyroptosis. Furthermore, Mg(2+) administration protects mice from LPS-induced lethal septic shock. Together, our data reveal the underlying mechanism of how Mg(2+) inhibits pyroptosis and suggest potential clinic applications of magnesium supplementation for sepsis prevention and treatment.
|Animals[MESH]
|Cells, Cultured[MESH]
|HEK293 Cells[MESH]
|Humans[MESH]
|Intracellular Signaling Peptides and Proteins/*antagonists & inhibitors/metabolism[MESH]