Abstract:
:Many genes controlling neuronal development also regulate adult neurogenesis. We investigated in vivo the effect of Sonic hedgehog (Shh) signaling activation on patterning and neurogenesis of the hippocampus and behavior of Patched1 (Ptch1) heterozygous mice (Ptch1+/- ). We demonstrated for the first time, that Ptch1+/- mice exhibit morphological, cellular and molecular alterations in the dentate gyrus (DG), including elongation and reduced width of the DG as well as deregulations at multiple steps during lineage progression from neural stem cells to neurons. By using stage-specific cellular markers, we detected reduction of quiescent stem cells, newborn neurons and astrocytes and accumulation of proliferating intermediate progenitors, indicative of defects in the dynamic transition among neural stages. Phenotypic alterations in Ptch1+/- mice were accompanied by expression changes in Notch pathway downstream components and TLX nuclear receptor, as well as perturbations in inflammatory and synaptic networks and mouse behavior, pointing to complex biological interactions and highlighting cooperation between Shh and Notch signaling in the regulation of neurogenesis.
journal_name
Front Mol Neuroscijournal_title
Frontiers in molecular neuroscienceauthors
Antonelli F,Casciati A,Tanori M,Tanno B,Linares-Vidal MV,Serra N,Bellés M,Pannicelli A,Saran A,Pazzaglia Sdoi
10.3389/fnmol.2018.00168subject
Has Abstractpub_date
2018-05-23 00:00:00pages
168issn
1662-5099journal_volume
11pub_type
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