Cited by 8Genetics and Neurodevelopmental DisordersNeurogenesis and neuroplasticity mechanismsHippo pathway signaling and YAP/TAZ

Transgenic modeling of Ndr2 gene amplification reveals disturbance of hippocampus circuitry and function

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Madencioglu, Deniz A., Çalışkan, Gürsel, Yuanxiang, Pingan, Rehberg, Kati, Demiray, Yunus E., Kul, Emre, Engler, Alexander, Hayani, Hussam +8 more·2021·iScience

Abstract

gene encodes a protein kinase important for neuronal development and is part of a microduplication region on chromosome 12 that is associated with intellectual disabilities, autism, and epilepsy. We developed a conditional transgenic mouse with increased Ndr2 expression in postmigratory forebrain neurons to study the consequences of an increased gene dosage of this Hippo pathway kinase on brain circuitry and cognitive functions. Our analysis reveals reduced terminal fields and synaptic transmission of hippocampal mossy fibers, altered hippocampal network activity, and deficits in mossy fiber-dependent behaviors. Reduced doublecortin expression and protein interactome analysis indicate that transgenic Ndr2 disturbs the maturation of granule cells in the dentate gyrus. Together, our data suggest that increased expression of Ndr2 may critically contribute to the development of intellectual disabilities upon gene amplification.

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Crossref · 10.1016/j.isci.2021.102868

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  • NDR2 is the only NDR kinase expressed in the adult mouse brain.

    “Previously, we showed that from the mammalian NDR kinases, NDR2 is the only one expressed in the adult mouse brain.”

    From The Serine/Threonine Kinase <scp>NDR2</scp> Regulates Integrin Signaling, Synapse Formation, and Synaptic Plasticity in the Hippocampus (2025) · cites this paper as Madencioglu et al. 2021

    The Results section (“TGNdr2 expression in the hippocampus”) says that both Ndr2 and its close homolog Ndr1 are endogenously expressed in wild-type dentate gyrus granule cells. The Methods specify that the expression measurements included mice at 3 months of age, contrary to the claim that NDR2 is the only NDR kinase expressed in the adult mouse brain. (LLM, conf=0.90)

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  • NDR1 expression remains completely absent in the mouse brain.

    “NDR2 expression is low after birth and steadily increases during postnatal development, whereas NDR1 expression remains completely absent.”

    From The Serine/Threonine Kinase <scp>NDR2</scp> Regulates Integrin Signaling, Synapse Formation, and Synaptic Plasticity in the Hippocampus (2025) · cites this paper as Madencioglu et al. 2021

    The Results section (‘TGNdr2 expression in the hippocampus’; page not provided) says Ndr1 is endogenously expressed in mouse dentate gyrus granule cells. That directly contradicts the claim that NDR1 expression is completely absent from the mouse brain. (LLM, conf=0.95)

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  • NDR2 expression is low after birth and steadily increases during postnatal development in the mouse brain.

    “NDR2 expression is low after birth and steadily increases during postnatal development, whereas NDR1 expression remains completely absent.”

    From The Serine/Threonine Kinase <scp>NDR2</scp> Regulates Integrin Signaling, Synapse Formation, and Synaptic Plasticity in the Hippocampus (2025) · cites this paper as Madencioglu et al. 2021

    The Results report that endogenous Ndr2 expression increases during postnatal development in mouse dentate gyrus granule cells. But the Discussion specifies that levels fell from P15 to P30 before rising in adulthood, so the measured trajectory was not steady; the paper also does not establish expression levels immediately after birth. (LLM, conf=0.88)

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  • NDR2 controls growth and plasticity of hippocampal mossy fibres.

    “We showed that it controls the dendritic branching during the postnatal development of pyramidal neurons in hippocampal area CA3, growth, and plasticity of hippocampal mossy fibres (Demiray et al. 2018;”

    From The Serine/Threonine Kinase <scp>NDR2</scp> Regulates Integrin Signaling, Synapse Formation, and Synaptic Plasticity in the Hippocampus (2025) · cites this paper as Madencioglu et al. 2021

    The Discussion says Ndr2-related signaling may alter mossy-fiber growth in adult-born granule cells. The Results report reduced late-phase mossy-fiber LTP in the ventral hippocampus of Ndr2-overexpressing mice, but no change in short-term plasticity or comparable change in dorsal mossy fibers. Thus, the unqualified claim that NDR2 controls mossy-fiber growth and plasticity is broader and more certain than the paper’s findings. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • NDR2 controls dendritic branching during the postnatal development of pyramidal neurons in hippocampal area CA3.

    “We showed that it controls the dendritic branching during the postnatal development of pyramidal neurons in hippocampal area CA3, growth, and plasticity of hippocampal mossy fibres (Demiray et al. 2018;”

    From The Serine/Threonine Kinase <scp>NDR2</scp> Regulates Integrin Signaling, Synapse Formation, and Synaptic Plasticity in the Hippocampus (2025) · cites this paper as Madencioglu et al. 2021

    The Introduction reports altered basal and apical dendrites in CA3 pyramidal neurons of Ndr2-knockout mice, supporting a role for Ndr2 in their dendritic growth. It describes those neurons in adulthood, however, and does not establish that Ndr2 controls their branching during postnatal development. (LLM, conf=0.84)

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Research works printed but not linked: 1

  1. Pallister P.D. Meisner L.F. Elejalde B.R. Francke U. Herrmann J. Spranger J. Tiddy W. Inhorn S.L. Opitz J.M. The pallister mosaic syndrome. Birth Defects Orig Artic. Ser. 13 1977 103 110 890087

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Authors
Madencioglu, D. A., Çalışkan, G., Yuanxiang, P., Rehberg, K., Demiray, Y. E., Kul, E., Engler, A., Hayani, H., Bergado-Acosta, J. R., Kummer, A., Müller, I., Song, I., Dityatev, A., Kähne, T., Kreutz, M. R., & Stork, O.
Affiliations
  • Otto-von-Guericke-Universität Magdeburg (DE)
  • Center for Behavioral Brain Sciences (DE)
  • Leibniz Institute for Neurobiology (DE)
  • German Center for Neurodegenerative Diseases (DE)
  • University Medical Center Hamburg-Eppendorf (DE)
Corresponding author
Stork, Oliver
Venue
iScience
Publisher
Elsevier BV
Published
2021-08
Volume
24
Issue
8
Pages
102868
ISSN
2589-0042 (ISSN-L)
OpenAlex
W3186221385
Cited by
8
References
76
Citations by year
2025: 3 · 2024: 1 · 2023: 3 · 2022: 1
FWCI
0.71
Type
journal article
Language
en
Open access
Locations
  • iScience (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by-nc-nd)
  • DZNE Pub (submittedVersion, cc-by-nc-nd)
  • Digitalen Hochschulbibliothek Sachsen-Anhalt (Universitäts- und Landesbibliothek Sachsen-Anhalt)
Funders
  • European Regional Development Fund (ZS/2016/04/78113)
  • Deutsche Forschungsgemeinschaft (CRC779, 362321501/RTG 2413 SynAGE, STO448/4-1, DI 702/8-1)
  • Wellcome Trust
  • Leibniz-Gemeinschaft
  • Center for Behavioral Brain Sciences (SAS-2015-LIN-LWC)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hippo pathway signaling and YAP/TAZ
Keywords
NDR2, gene amplification, Hippo signaling pathway, hippocampus, mossy fibers, synaptic transmission, dentate gyrus, granule cell maturation, doublecortin, intellectual disability, autism spectrum disorder, epilepsy, cognitive impairment, neuronal development

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