alexa Derepression of BDNF transcription involves calcium-dependent phosphorylation of MeCP2.
Toxicology

Toxicology

Journal of Drug Metabolism & Toxicology

Author(s): Chen WG, Chang Q, Lin Y, Meissner A, West AE, , Chen WG, Chang Q, Lin Y, Meissner A, West AE,

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Abstract Mutations in MeCP2, which encodes a protein that has been proposed to function as a global transcriptional repressor, are the cause of Rett syndrome (RT T), an X-linked progressive neurological disorder. Although the selective inactivation of MeCP2 in neurons is sufficient to confer a Rett-like phenotype in mice, the specific functions of MeCP2 in postmitotic neurons are not known. We find that MeCP2 binds selectively to BDNF promoter III and functions to repress expression of the BDNF gene. Membrane depolarization triggers the calcium-dependent phosphorylation and release of MeCP2 from BDNF promoter III, thereby facilitating transcription. These studies indicate that MeCP2 plays a key role in the control of neuronal activity-dependent gene regulation and suggest that the deregulation of this process may underlie the pathology of RT T. This article was published in Science and referenced in Journal of Drug Metabolism & Toxicology

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