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- W1984935145 abstract "Sympathetic neurons can switch their neurotransmitter phenotype from noradrenergic to cholinergic on exposure to neuropoietic cytokines in vitro and in vivo . Here, we provide evidence that this transspecification is regulated by the chromatin architecture protein Satb2. Treatment with the neuropoietic cytokines ciliary neurotrophic factor (CNTF) and leukemia inhibitory factor rapidly and strongly increases Satb2 transcript and protein levels in cultures of rat superior cervical ganglia neurons. Knockdown of endogenous Satb2 by short interfering RNA prevents the upregulation of choline acetyltransferase (Chat) and vesicular acetylcholine transporter (Vacht) by CNTF as well as the loss of norepinephrine transporter (Net). Conversely, overexpression of Satb2 in the noradrenergic sympathetic phenotype results in a marked increase of Chat and Vacht expression and reduced Net mRNA levels in the absence of neuropoietic cytokines. Chromatin immunoprecipitation analysis in primary sympathetic neurons reveals that Satb2 binds to matrix attachment regions (MARs) within the Chat locus. In vivo , in the rat stellate ganglion, Satb2 is expressed exclusively in sudomotor cholinergic neurons innervating the sweat glands and only after establishment of contact between neurons and target. These findings demonstrate a function of the MAR-binding protein Satb2 in growth factor-dependent neurotransmitter plasticity in postmitotic neurons." @default.
- W1984935145 created "2016-06-24" @default.
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- W1984935145 date "2010-12-01" @default.
- W1984935145 modified "2023-09-27" @default.
- W1984935145 title "The Sympathetic Neurotransmitter Switch Depends on the Nuclear Matrix Protein Satb2" @default.
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- W1984935145 doi "https://doi.org/10.1523/jneurosci.3502-10.2010" @default.
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