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Isolation and Characterization of the Chicken m2 Acetylcholine Receptor Promoter Region: Induction of Gene Transcription by Leukemia Inhibitory Factor and Ciliary Neurotrophic Factor

Marc L. Rosoff, Jia Wei and Neil M. Nathanson
Proceedings of the National Academy of Sciences of the United States of America
Vol. 93, No. 25 (Dec. 10, 1996), pp. 14889-14894
Stable URL: http://www.jstor.org/stable/41183
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Isolation and Characterization of the Chicken m2 Acetylcholine Receptor Promoter Region: Induction of Gene Transcription by Leukemia Inhibitory Factor and Ciliary Neurotrophic Factor
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Abstract

We have isolated the promoter region and determined the start sites of transcription for the gene encoding the chicken m2 (cm2) muscarinic acetylcholine receptor. Transfection experiments, using cm2-luciferase reporter gene constructs, demonstrated that a 789-bp genomic fragment was sufficient to drive high level expression in chicken heart primary cultures, while an additional 1.2-kb region was required for maximal expression in mouse septal/neuroblastoma (SN56) cells. Treatment of SN56 cells with the cytokines ciliary neurotrophic factor and leukemia inhibitory factor increases expression of endogenous muscarinic acetylcholine receptors and results in a 4- to 6-fold induction of cm2 promoter driven luciferase expression. We have mapped a region of the cm2 promoter that is necessary for induction by cytokines.

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