NF-κB signalling regulates the growth of neural processes in the developing PNS and CNS
MetadataShow full item record
The proper growth and elaboration of neural processes is essential for the establishment of a functional nervous system during development and is an integral feature of neural plasticity throughout life. Nuclear factor-kappa B (NF-kappa B) is classically known for its ubiquitous roles in inflammation, immune and stress-related responses and regulation of cell survival in all tissues, including the nervous system. NF-kappa B participation in other cellular processes remains poorly understood. Here we report a mechanism for controlling the growth of neural processes in developing peripheral and central neurons involving the transcription factor NF-kappa B. Inhibiting NF-kappa B activation with super-repressor I kappa B-alpha, BAY 11 7082 (I kappa B-alpha phosphorylation inhibitor) or N-acetyl-Leu-Leu-norleucinal (proteosomal degradation inhibitor), or inhibiting NF-kappa B transcriptional activity with kappa B decoy DNA substantially reduced the size and complexity of the neurite arbors of sensory neurons cultured with brain-derived neurotrophic factor while having no effect on their survival. NF-kappa B exerted this effect during a restricted period of development following the phase of naturally occurring neuronal death when the processes and connections of the remaining neurons are extensively modified and refined. Inhibiting NF-kappa B activation or NF-kappa B transcriptional activity in layer 2 pyramidal neurons in postnatal somatosensory cortical slices reduced dendritic arbor size and complexity. This function of NF-kappa B has important implications for neural development and may provide an explanation for reported involvement of NF-kappa B in learning and memory.
Is part ofDevelopment, 2005, vol. 32, núm. 7, p. 1713-1726
European research projects
Showing items related by title, author, creator and subject.
Gutierrez, Humberto; Dolcet Roca, Xavier; Tolcos, Mary; Davies, Alun M. (Company of Biologists Ltd., 2004-08)Although hepatocyte growth factor (HGF) and its receptor tyrosine kinase MET are widely expressed in the developing and mature central nervous system, little is known about the role of MET signaling in the brain. We have ...
The death receptor antagonist FAIM promotes neurite outgrowth by a mechanism that depends on ERK and NF-κB signaling Solé Serra, Carme; Dolcet Roca, Xavier; Segura Ginard, Miguel Francisco; Gutierrez, Humberto; Diaz Meco, Maria Teresa; Gozzelino, Raffaella; Sanchis, Daniel; Bayascas Ramírez, José Ramón; Gallego, Carme; Moscat, Jorge; Davies, Alun M.; Comella i Carnicé, Joan Xavier (Rockefeller University Press, 2004)Fas apoptosis inhibitory molecule (FAIM) is a protein identified as an antagonist of Fas-induced cell death. We show that FAIM overexpression fails to rescue neurons from trophic factor deprivation, but exerts a marked ...
The single AmphiTrk receptor highlights increased complexity of neurotrophin signalling in vertebrates and suggests an early role in developing sensory neuroepidermal cells Benito-Gutiérrez, Èlia; Nake, Christian; Llovera i Tomàs, Marta; Comella i Carnicé, Joan Xavier; Garcia-Fernàndez, Jordi (Company of Biologists Ltd., 2005-02)Neurotrophins (Nt) and their tyrosine kinase Trk receptors play an essential role in the development and maintenance of the complex vertebrate nervous system. Invertebrate genome sequencing projects have suggested that the ...