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Gadd45b and N-methyl-D-aspartate induced DNA demethylation in postmitotic neurons.


Gavin DP, Kusumo H, Sharma RP, Guizzetti M, Guidotti A, Pandey SC.

AIM: In nondividing neurons examine the role of Gadd45b in active 5-methylcytosine (5MC) and 5-hydroxymethylcytosine (5HMC) removal at a gene promoter highly implicated in mental illnesses and cognition, Bdnf.

MATERIALS & METHODS: Mouse primary cortical neuronal cultures with and without Gadd45b siRNA transfection were treated with N-methyl-d-aspartate (NMDA). Expression changes of genes reportedly involved in DNA demethylation, Bdnf mRNA and protein and 5MC and 5HMC at Bdnf promoters were measured.

RESULTS: Gadd45b siRNA transfection in neurons abolishes the NMDA-induced increase in Bdnf IXa mRNA and reductions in 5MC and 5HMC at the Bdnf IXa promoter.

CONCLUSION: These results contribute to our understanding of DNA demethylation mechanisms in neurons, and its role in regulating NMDA responsive genes implicated in mental illnesses.

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Published
June, 2015

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Products used in this publication

  • Mouse IgG
    C15200081-100
    5-methylcytosine (5-mC) monoclonal antibody 33D3

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