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Proliferation of neural stem cells in the embryonic cerebral cortex is regulated by many growth factors and their receptors. Among the key molecules stimulating stem cell proliferation are FGF-2 and the FGF receptor-1. This ligand-receptor system is highly dependent on the surrounding heparan...
The Na V 1.9 subunit is expressed in nociceptive dorsal root ganglion (DRG) neurons and sensory myenteric neurons in which it generates ‘persistent’ tetrodotoxin-resistant (TTX-R) Na + currents of yet unknown physiological functions. Here, we have analyzed these currents in details by...
Shank proteins are scaffolding proteins in the postsynaptic density of excitatory synapses in the mammalian brain. In situ hybridization revealed that Shank1/SSTRIP and Shank2/ProSAP1 mRNAs are widely expressed early in postnatal brain development whereas Shank3/ProSAP2 expression increases...
The secreted glycoprotein WNT1 is expressed in the caudal midbrain and is essential for proper development of the entire mid-/hindbrain region. To get better insights into Wnt1 function in the mid-/hindbrain region, we ectopically expressed Wnt1 under the control of the endogenous En1 promoter,...
The developing nervous system adapts to a wide array of stimuli, in part, by evoking activity-dependent mechanisms that signal to the nucleus and induce long-term modifications in neuronal function. It is well established that one such stimulus is strong synaptic activity. Our interest, however,...
Nine neurodegenerative disorders are caused by CAG/polyglutamine (polyQ) repeat expansions. The molecular mechanisms responsible for disease-specific neurodegeneration remain elusive. We developed an embryonic stem (ES) cell-based model to probe the role of polyQ tract expansion in neuronal...
DISC1 is disrupted by a chromosomal translocation cosegregating with schizophrenia and recurrent major depression in a large Scottish family and has also been reported as a potential susceptibility locus in independent populations. We reveal a widespread and complex pattern of DISC1 expression,...
Among dopamine receptors, the function and properties of the D3 receptor subtype are poorly understood. Here we report the identification and characterization of two unique properties of the human D3 receptor. The D3 receptor exhibits a tolerance property wherein the magnitude of the second...
Axonal regeneration in the adult CNS is limited by the presence of several inhibitory proteins associated with myelin. Nogo-A, a myelin-associated inhibitor, is responsible for axonal outgrowth inhibition in vivo and in vitro. Here we study the onset and maturation of Nogo-A and Nogo receptor in...
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