Apelin-13 attenuates cerebral ischemia-reperfusion injury by inhibiting NLRP3/caspase-1/GSDMD pathway mediated pyroptosis
10.16557/j.cnki.1000-7547.2024.02.013
- VernacularTitle:Apelin-13通过NLRP3/caspase-1/GSDMD通路抑制脑缺血再灌注损伤小鼠细胞焦亡
- Author:
Yaping MA
1
;
Changsheng MA
;
Bo HAN
;
Min BAI
;
Shuchen MENG
;
Mengyuan DUAN
;
Maotao HE
Author Information
1. 山东第二医科大学基础医学院,潍坊 261021
- Keywords:
Apelin-13;
oxygen glucose deprivation/reoxygenation(OGD/R);
ischemia-reperfusion(I/R);
NLRP3;
pyroptosis;
mouse
- From:
Chinese Journal of Neuroanatomy
2024;40(2):231-240
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effects of Apelin-13 regulatory peptide on neuronal cell pyroptosis in mice modeled with cerebral ischemia-reperfusion(I/R).Methods:We prepared a mouse cerebral I/R model using middle cerebral artery embolization and Reperfusion(MCAO/R).The HT22 cell injury model was prepared by the oxygen glu-cose deprivation/reoxygenation(OGD/R),and Apelin-13 treatment was also given.Neurological function was assessed by neurological deficit score;hematoxylin-eosin(HE)staining and Nissl staining were used to observe the morphologic changes of the infarcted area of the mice;and 2,3,5triphenyltetrazolium chloride(TTC)staining was used to observe the volume of cerebral infarcts;The expression of NOD-like receptor thermoprotein structural domain-related protein 3(NLRP3),gasdermin D(GSDMD),caspase-1,apoptosis-associated speck-like protein(ASC),interleukin 1β(IL-1β),and interleukin 18(IL-18)in brain tissues from infarcted areas or HT22 cells was detected by Western Blot,and IL-1β and IL-18 were detected by enzyme-linked immunosorbent assay(ELISA)in serum of mice and culture supema-tants;The cell viability and cell damage of HT22 were detected by CCK-8 kit and lactate dehydrogenase(LDH)assay kit,respectively;caspase-1 activity was measured by caspase-1 activity kit in HT22 cells;and the expression of caspase-1 and GSDMD was observed by immunofluorescence staining in HT22 cells.Results:Apelin-13 significantly improved neurological function and cerebral infarct volume in I/R mice,and attenuated pathological damage in the in-farcted area.It also reduced the serum levels of IL-1β and IL-18.In addition,Apelin-13 reduced the expression of mol-ecules such as NLRP3,GSDMD,caspase-1,IL-1β,and IL-18 in the cerebral infarct area of mice.In vitro experiments showed that Apelin-13 significantly increased the viability of OGD/R-treated HT22 cells,decreased caspase-1 activity,and reduced the LDH content,as well as decreased the expression of molecules such as NLRP3,GSDMD,caspase-1,IL-1β,IL-18,and so on,in OGD/R-treated HT22 cells.Conclusion:Apelin-13 inhibits pyroptosis through the NL-RP3/caspase-1/GSDMD pathway in cerebral ischemia/reperfusion mice and thus exerts neuroprotective effects.
