Gao_2009_Cell.Mol.Life.Sci_66_2181

Reference

Title : Calcium signaling-induced Smad3 nuclear accumulation induces acetylcholinesterase transcription in apoptotic HeLa cells - Gao_2009_Cell.Mol.Life.Sci_66_2181
Author(s) : Gao W , Zhu H , Zhang JY , Zhang XJ
Ref : Cell Mol Life Sciences , 66 :2181 , 2009
Abstract :

Recently, acetylcholinesterase (AChE) has been studied as an important apoptosis regulator. We previously showed that cellular calcium mobilization upregulated AChE expression by modulating promoter activity and mRNA stability. In this study, we have identified a potential Smad3/4 binding element, TGCCAGACA, located within the -601 to -571 bp fragment of the AChE promoter, as an important calcium response motif. Smad2/3 and Smad4 were shown to bind this element. Overexpression of human Smad3 increased AChE transcription activity in a dose-dependent manner in HeLa cells, whereas dominant-negative Smad3 blocked this activation. Upon A23187 and thapsigargin treatment, nuclear Smad3 accumulation was observed, an effect that was blocked by the intracellular Ca(2+) chelator BAPTA-AM. Calcium-induced AChE transcriptional activation was significantly blocked when the nuclear localization signal of Smad3 was destroyed. Taken together, our data suggest Smad3 can regulate AChE transcriptional activation following calcium-induced nuclear accumulation.

PubMedSearch : Gao_2009_Cell.Mol.Life.Sci_66_2181
PubMedID: 19468687

Related information

Citations formats

Gao W, Zhu H, Zhang JY, Zhang XJ (2009)
Calcium signaling-induced Smad3 nuclear accumulation induces acetylcholinesterase transcription in apoptotic HeLa cells
Cell Mol Life Sciences 66 :2181

Gao W, Zhu H, Zhang JY, Zhang XJ (2009)
Cell Mol Life Sciences 66 :2181