RGD Reference Report - Pax6 is required for production and maintenance of progenitor cells in postnatal hippocampal neurogenesis. - Rat Genome Database

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Pax6 is required for production and maintenance of progenitor cells in postnatal hippocampal neurogenesis.

Authors: Maekawa, M  Takashima, N  Arai, Y  Nomura, T  Inokuchi, K  Yuasa, S  Osumi, N 
Citation: Maekawa M, etal., Genes Cells. 2005 Oct;10(10):1001-14.
RGD ID: 1601222
Pubmed: PMID:16164600   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1365-2443.2005.00893.x   (Journal Full-text)

Neurogenesis is crucial for brain formation and continues to take place in certain regions of the postnatal brain including the subgranular zone (SGZ) of the hippocampal dentate gyrus (DG). Pax6 transcription factor is a key player for patterning the brain and promoting embryonic neurogenesis, and is also expressed in the SGZ. In the DG of wild-type rats, more than 90% of total BrdU-incorporated cells expressed Pax6 at 30 min time point after BrdU injection. Moreover, approximately 60% of Pax6+ cells in the SGZ exhibited as GFAP+ cells with a radial glial phenotype and about 30% of Pax6+ cells exhibited as PSA-NCAM+ cells in clusters. From BrdU labeling for 3 days, we found that cell proliferation was 30% decreased at postnatal stages in Pax6-deficient rSey2/+ rat. BrdU pulse/chase experiments combined with marker staining revealed that PSA-NCAM+ late progenitor cells increased at the expense of GFAP+ early progenitors in rSey2/+ rat. Furthermore, expression of Wnt ligands in the SGZ was markedly reduced in rSey2/+ rat. Taken all together, an appropriate dosage of Pax6 is essential for production and maintenance of the GFAP+ early progenitor cells in the postnatal hippocampal neurogenesis.



Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
Pax6Ratregulation of neurogenesis  IMP  RGD 

Molecular Pathway Annotations    Click to see Annotation Detail View

RGD Manual Annotations


  
Objects Annotated

Genes (Rattus norvegicus)
Pax6  (paired box 6)
Wnt7a  (Wnt family member 7A)
Wnt7b  (Wnt family member 7B)

Genes (Mus musculus)
Wnt7a  (wingless-type MMTV integration site family, member 7A)
Wnt7b  (wingless-type MMTV integration site family, member 7B)

Genes (Homo sapiens)
WNT7A  (Wnt family member 7A)
WNT7B  (Wnt family member 7B)


Additional Information