Reference : Regrowing the adult brain: NF-kappaB controls functional circuit formation and tissue...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
Regrowing the adult brain: NF-kappaB controls functional circuit formation and tissue homeostasis in the dentate gyrus.
Imielski, Yvonne [> >]
Schwamborn, Jens Christian mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Life Science Research Unit >]
Luningschror, Patrick [> >]
Heimann, Peter [> >]
Holzberg, Magdalena [> >]
Werner, Hendrikje [> >]
Leske, Oliver [> >]
Puschel, Andreas W. [> >]
Memet, Sylvie [> >]
Heumann, Rolf [> >]
Israel, Alain [> >]
Kaltschmidt, Christian [> >]
Kaltschmidt, Barbara [> >]
Yes (verified by ORBilu)
United States
[en] Animals ; Apoptosis ; Cyclic AMP-Dependent Protein Kinases/metabolism ; Dentate Gyrus/cytology/metabolism/physiology ; Forkhead Transcription Factors/metabolism ; Gene Deletion ; Gene Expression Regulation ; Homeostasis ; Inflammation/metabolism/pathology/physiopathology ; Male ; Mice ; Mossy Fibers, Hippocampal/metabolism/physiology ; NF-kappa B/deficiency/genetics/metabolism ; Nerve Net/cytology/metabolism/physiology ; Neurogenesis ; Regeneration ; Signal Transduction ; Spatial Behavior/physiology
[en] Cognitive decline during aging is correlated with a continuous loss of cells within the brain and especially within the hippocampus, which could be regenerated by adult neurogenesis. Here we show that genetic ablation of NF-kappaB resulted in severe defects in the neurogenic region (dentate gyrus) of the hippocampus. Despite increased stem cell proliferation, axogenesis, synaptogenesis and neuroprotection were hampered, leading to disruption of the mossy fiber pathway and to atrophy of the dentate gyrus during aging. Here, NF-kappaB controls the transcription of FOXO1 and PKA, regulating axogenesis. Structural defects culminated in behavioral impairments in pattern separation. Re-activation of NF-kappaB resulted in integration of newborn neurons, finally to regeneration of the dentate gyrus, accompanied by a complete recovery of structural and behavioral defects. These data identify NF-kappaB as a crucial regulator of dentate gyrus tissue homeostasis suggesting NF-kappaB to be a therapeutic target for treating cognitive and mood disorders.

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