Abstract：
:Different transcription elements have been proposed to play a role in the regulation of acetylcholinesterase (AChE) in muscle and neuron, and cyclic adenosine 3',5'-monophosphate (cAMP)-dependent pathway is one of them. In order to test the possible role of cAMP in regulating the expression of human AChE, an approximately 2.2 kb DNA fragment of human AChE promoter was linked up stream to a luciferase reporter. The chimeric DNA was transfected into cultured NG108-15 neuroblastoma cells. Application of Bt(2)-cAMP and forskolin increased the promoter driven luciferase activity over 2-fold in the transfected NG108-15 cells; the increase was parallel to the activation of endogenous AChE protein and enzymatic activity. The intracellular cAMP level was increased in the Galpha(sQL) (constitutively active mutant of Galpha(s)) cDNA transfected NG108-15 cells. The Galpha(sQL) cDNA transfected cells showed an increase of over 10-fold in the luciferase activity. In addition, a constitutively active mutant of activating transcription factor-1 (ATF-1) was able to turn on human AChE promoter by approximately 4-fold when they were co-expressed in the neuroblastoma cells. These results support the involvement of a cAMP-dependent pathway in regulating the expression of human AChE.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Wan DC,Choi RC,Siow NL,Tsim KWdoi
10.1016/s0304-3940(00)01200-3keywords:
subject
Has Abstractpub_date
2000-07-07 00:00:00pages
81-5issue
1eissn
0304-3940issn
1872-7972pii
S0304-3940(00)01200-3journal_volume
288pub_type
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