José Antonio Troca-Marín

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Local translation of dendritic mRNAs is a key aspect of dendrite and spine morphogenesis and synaptic plasticity, two phenomena generally compromised in intellectual disability disorders. Mammalian target of rapamycin (mTOR) is a protein kinase involved in a plethora of functions including dendritogenesis, plasticity and the regulation of local translation.(More)
Down's syndrome cell adhesion molecule (DSCAM) belongs to the Down's syndrome critical region of human chromosome 21, and it encodes a cell adhesion molecule involved in dendrite morphology and neuronal wiring. Although the function of DSCAM in the adult brain is unknown, its expression pattern suggests a role in synaptic plasticity. Local mRNA translation(More)
As in other diseases associated with mental retardation, dendrite morphology and synaptic plasticity are impaired in Down's syndrome (DS). Both these features of neurons are critically influenced by BDNF, which regulates local dendritic translation through phosphatidylinositol 3-kinase-Akt-mammalian target of rapamycin (mTOR) and Ras-ERK signaling cascades.(More)
We have studied the modulation by 5-HT of the synaptic excitatory responses evoked by callosal fibers on cortical pyramidal neurons. We have used a mouse brain slice preparation that preserves the callosal fibers and allows their selective activation. EPSCs evoked by callosal stimulation (ccEPSCs) were recorded with patch electrodes from pyramidal neurons(More)
Changes in dendritic spine morphology, a hallmark of synaptic plasticity, involve remodeling of the actin cytoskeleton, a process that is regulated by Rho GTPases. RhoA, a member of this GTPase family, segregates to dendrites in differentiated neurons. Given the emerging role of dendritic mRNA local translation in synaptic plasticity, we have assessed the(More)
An increasing amount of evidence suggests that the dysregulation of the Akt-mTOR (Akt-mammalian Target Of Rapamycin) signaling network is associated with intellectual disabilities, such as fragile X, tuberous sclerosis and Rett's syndrome. The Akt-mTOR pathway is involved in dendrite morphogenesis and synaptic plasticity, and it has been shown to modulate(More)
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