Chronic hypoxia induces the activation of the Wnt/β-catenin signaling pathway and stimulates hippocampal neurogenesis in wild-type and APPswe-PS1ΔE9 transgenic mice in vivo

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dc.contributor.authorVarela-Nallar, Lorena
dc.contributor.authorRojas-Abalos, Macarena
dc.contributor.authorAbbott, Ana C.
dc.contributor.authorMoya, Esteban A.
dc.contributor.authorIturriaga, Rodrigo
dc.contributor.authorInestrosa, Nibaldo C.
dc.date.accessioned2023-06-27T15:53:03Z
dc.date.available2023-06-27T15:53:03Z
dc.date.issued2014-02
dc.descriptionIndexación: Scopus.es
dc.description.abstractHypoxia modulates proliferation and differentiation of cultured embryonic and adult stem cells, an effect that includes β-catenin, a key component of the canonical Wnt signaling pathway. Here we studied the effect of mild hypoxia on the activity of the Wnt/β catenin signaling pathway in the hippocampus of adult mice in vivo. The hypoxia-inducible transcription factor-1α (HIF-1α) was analyzed as a molecular control of the physiological hypoxic response. Exposure to chronic hypoxia (10% oxygen for 6–72 h) stimulated the activation of the Wnt/β-catenin signaling pathway. Because the Wnt/β-catenin pathway is a positive modulator of adult neurogenesis, we evaluated whether chronic hypoxia was able to stimulate neurogenesis in the subgranular zone (SGZ) of the hippocampal dentate gyrus. Results indicate that hypoxia increased cell proliferation and neurogenesis in adult wild-type mice as determined by Ki67 staining, Bromodeoxyuridine (BrdU) incorporation and double labeling with doublecortin (DCX). Chronic hypoxia also induced neurogenesis in a double transgenic APPswe-PS11E9 mouse model of Alzheimer’s disease (AD), which shows decreased levels of neurogenesis in the SGZ. Our results show for the first time that exposure to hypoxia in vivo can induce the activation of the Wnt/β-catenin signaling cascade in the hippocampus, suggesting that mild hypoxia may have a therapeutic value in neurodegenerative disorders associated with altered Wnt signaling in the brain and also in pathological conditions in which hippocampal neurogenesis is impaired.es
dc.description.urihttps://www.frontiersin.org/articles/10.3389/fncel.2014.00017/full
dc.identifier.doi10.3389/fncel.2014.00017
dc.identifier.issn1662-5102
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/51086
dc.language.isoenes
dc.rights.licenseAtribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectHypoxiaes
dc.subjectHIF-1αes
dc.subjectHippocampuses
dc.subjectWnt Signaling Pathwayes
dc.subjectβ-catenines
dc.subjectNeurogenesises
dc.subjectAlzheimer’s Diseasees
dc.titleChronic hypoxia induces the activation of the Wnt/β-catenin signaling pathway and stimulates hippocampal neurogenesis in wild-type and APPswe-PS1ΔE9 transgenic mice in vivoes
dc.typeArtículoes
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