Inhibition of mitochondrial calcium uniporter protects neurocytes from ischemia/reperfusion injury via the inhibition of excessive mitophagy

Mitophagy plays an important role in mitochondrial quality control and cell survival during the process of ischemia/reperfusion (I/R) injury. Mitochondrial calcium uniporter (MCU) is the most important channel responsible for Ca(2+) influx into mitochondria and Ca(2+) signal plays a potential role in modulating mitophagy. However, the effect of MCU on mitophagy during the process of I/R injury remains unknown. This study constructed an in vitro I/R model by subjecting oxygen and glucose deprivation/reperfusion (OGD/RP) model to SH-SY5Y cells to mimic the cerebral I/R injury and aimed to explore the exact effect of MCU on I/R induced mitophagy. The results showed that OGD/RP induced autophagy and mitophagy in SH-SY5Y cells. Ru360, the inhibitor of MCU, improved mitochondrial morphology and fuctional stability as well as cell viability, significantly reduced OGD/RP induced mitophagy as evidenced by the decrease in Beclin-1 and the increase in Tom20 and P62 expression. Whereas spermine, the agonist of MCU, had no significant impact on the expression of those mitophagy related proteins compared with OGD/RP group. This study indicates that inhibition of MCU can inhibit excessive mitophagy and protect the neurocytes from I/R injury..

Medienart:

Artikel

Erscheinungsjahr:

2016

Erschienen:

2016

Enthalten in:

Zur Gesamtaufnahme - volume:628

Enthalten in:

Neuroscience letters - 628(2016), Seite 24-29

Sprache:

Englisch

Beteiligte Personen:

Yu, Shoushui [VerfasserIn]
Zheng, Shengfa [Sonstige Person]
Leng, Jing [Sonstige Person]
Wang, Shilei [Sonstige Person]
Zhao, Tao [Sonstige Person]
Liu, Jia [Sonstige Person]

Links:

Volltext
www.ncbi.nlm.nih.gov

BKL:

44.90

42.63

doi:

10.1016/j.neulet.2016.06.012

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC1980308845