6533b85ffe1ef96bd12c1c42
RESEARCH PRODUCT
The APC/C cofactor Cdh1 prevents replicative stress and p53-dependent cell death in neural progenitors
Manuel EgurenMarta CañameroMarcos MalumbresEusebio ManchadoIrene García-higueraEva PorlanIsabel Fariñassubject
DNA ReplicationMaleProgrammed cell deathCell divisionNeurogenesisGeneral Physics and AstronomyApoptosisCell Cycle ProteinsBiologyAnaphase-Promoting Complex-CyclosomeCdh1 ProteinsGeneral Biochemistry Genetics and Molecular BiologyMice03 medical and health sciences0302 clinical medicineNeural Stem CellsAnimalsProgenitor cell030304 developmental biologyProgenitorMice KnockoutNeuronschemistry.chemical_classification0303 health sciencesDNA ligaseMultidisciplinaryCell CycleNeurogenesisBrainOrgan SizeGeneral ChemistryCell cycle3. Good healthCell biologyMice Inbred C57BLchemistrySynaptic plasticityFemaleTumor Suppressor Protein p53Cell Division030217 neurology & neurosurgerydescription
The E3-ubiquitin ligase APC/C-Cdh1 is essential for endoreduplication but its relevance in the mammalian mitotic cell cycle is still unclear. Here we show that genetic ablation of Cdh1 in the developing nervous system results in hypoplastic brain and hydrocephalus. These defects correlate with enhanced levels of Cdh1 substrates and increased entry into the S phase in neural progenitors. However, cell division is prevented in the absence of Cdh1 due to hyperactivation of cyclin-dependent kinases, replicative stress, induction of p53, G2 arrest and apoptotic death of these progenitor cells. Concomitant ablation of p53 rescues apoptosis but not replicative stress, resulting in the presence of damaged neurons throughout the adult brain. These data indicate that the inactivation of Cdh1 in vivo results in replicative stress, cell cycle arrest and cell death, supporting recent therapeutic proposals aimed to inhibit the APC/C in tumours.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 | Nature Communications |