A progressive neurodegenerative disease,Alzheimer’s disease(AD).Studies suggest that highly expressed protein isoaspartate methyltransferase 1(PCMT1)in brain tissue.In the current study,we explored the effects of neu...A progressive neurodegenerative disease,Alzheimer’s disease(AD).Studies suggest that highly expressed protein isoaspartate methyltransferase 1(PCMT1)in brain tissue.In the current study,we explored the effects of neural stem cell-conditioned medium(NSC-CDM)on the PCMT1/MST1 pathway to alleviate Aβ_(25-35)-induced damage in SH-SY5Y cells.Our data suggested that Aβ_(25-35) markedly inhibited cell viability.NSC-CDM or Neural stem cell-complete medium(NSC-CPM)had a suppression effect on toxicity when treatment with Aβ_(25-35),with a greater effect observed with NSC-CDM.Aβ_(25-35)+NSC-CDM group exhibited an increase in PCMT1 expression.sh-PCMT1 markedly decreased cell proliferation and suppressed the protective role of NSC-CDM through the induction of apoptosis and improved p-MST1 expression.Overexpression of PCMT1 reversed the Aβ_(25-35)-induced decrease in cell proliferation and apoptosis.In summary,our findings suggest that NSC-CDM corrects the Aβ_(25-35)-induced damage to cells by improving PCMT1 expressions,which in turn reduces phosphorylation of MST1.展开更多
文摘A progressive neurodegenerative disease,Alzheimer’s disease(AD).Studies suggest that highly expressed protein isoaspartate methyltransferase 1(PCMT1)in brain tissue.In the current study,we explored the effects of neural stem cell-conditioned medium(NSC-CDM)on the PCMT1/MST1 pathway to alleviate Aβ_(25-35)-induced damage in SH-SY5Y cells.Our data suggested that Aβ_(25-35) markedly inhibited cell viability.NSC-CDM or Neural stem cell-complete medium(NSC-CPM)had a suppression effect on toxicity when treatment with Aβ_(25-35),with a greater effect observed with NSC-CDM.Aβ_(25-35)+NSC-CDM group exhibited an increase in PCMT1 expression.sh-PCMT1 markedly decreased cell proliferation and suppressed the protective role of NSC-CDM through the induction of apoptosis and improved p-MST1 expression.Overexpression of PCMT1 reversed the Aβ_(25-35)-induced decrease in cell proliferation and apoptosis.In summary,our findings suggest that NSC-CDM corrects the Aβ_(25-35)-induced damage to cells by improving PCMT1 expressions,which in turn reduces phosphorylation of MST1.