Cited by 106Genetic and Kidney Cyst DiseasesAxon Guidance and Neuronal SignalingCystic Fibrosis Research Advances

Primary Cilia Signaling Promotes Axonal Tract Development and Is Disrupted in Joubert Syndrome-Related Disorders Models

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Guo, Jiami, Otis, James M., Suciu, Sarah K., Catalano, Christy, Xing, Lei, Constable, Sandii, Wachten, Dagmar, Gupton, Stephanie +9 more·2019·Developmental Cell

Abstract

Appropriate axonal growth and connectivity are essential for functional wiring of the brain. Joubert syndrome-related disorders (JSRD), a group of ciliopathies in which mutations disrupt primary cilia function, are characterized by axonal tract malformations. However, little is known about how cilia-driven signaling regulates axonal growth and connectivity. We demonstrate that the deletion of related JSRD genes, Arl13b and Inpp5e, in projection neurons leads to de-fasciculated and misoriented axonal tracts. Arl13b deletion disrupts the function of its downstream effector, Inpp5e, and deregulates ciliary-PI3K/AKT signaling. Chemogenetic activation of ciliary GPCR signaling and cilia-specific optogenetic modulation of downstream second messenger cascades (PI3K, AKT, and AC3) commonly regulated by ciliary signaling receptors induce rapid changes in axonal dynamics. Further, Arl13b deletion leads to changes in transcriptional landscape associated with dysregulated PI3K/AKT signaling. These data suggest that ciliary signaling acts to modulate axonal connectivity and that impaired primary cilia signaling underlies axonal tract defects in JSRD.

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Crossref · 10.1016/j.devcel.2019.11.005

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  • The mother centriole synthesizes and releases acetylated microtubules for transport down the axon and the primary cilia, and modulation of primary cilia signaling such as AKT and AC3 controls axonal behavior.

    “The mother centriole synthesizes and releases acetylated microtubules for transport down the axon and the primary cilia, and modulation of primary cilia signaling such as AKT and AC3 controls axonal behavior [1, 26].”

    From Abnormal accumulation of extracellular vesicles in hippocampal dystrophic axons and regulation by the primary cilia in Alzheimer's disease (2023) · cites this paper as [26]

    The Results section reports that manipulating ciliary ACIII and AKT signaling changes axonal growth-cone behavior. Neither the supplied passages nor searches of our copy support the separate assertion that the mother centriole synthesizes and releases acetylated microtubules for transport down the axon and primary cilium. The indexed passages have no page numbers. (LLM, conf=0.88)

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Authors
Guo, J., Otis, J. M., Suciu, S. K., Catalano, C., Xing, L., Constable, S., Wachten, D., Gupton, S., Lee, J., Lee, A., Blackley, K. H., Ptacek, T., Simon, J. M., Schurmans, S., Stuber, G. D., Caspary, T., & Anton, E. S.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Emory University (US)
  • University of Calgary (CA)
  • University of Bonn (DE)
  • University of Washington (US)
Corresponding author
  • Guo, Jiami
  • Caspary, Tamara
  • Anton, E.S.
Venue
Developmental Cell
Publisher
Elsevier BV
Published
2019-12
Volume
51
Issue
6
Pages
759-774.e5
ISSN
1534-5807 (ISSN-L)
OpenAlex
W2995406279
Cited by
100
References
119
Citations by year
2026: 7 · 2025: 12 · 2024: 21 · 2023: 15 · 2022: 15 · 2021: 18 · 2020: 10 · 2019: 1
FWCI
6.61
Type
journal article
Language
en
Open access
Locations
  • Developmental Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Open Repository and Bibliography (University of Liège) (submittedVersion, other-oa)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
National Institute of Neurological Disorders and Stroke
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Cystic Fibrosis Research Advances
Keywords
Joubert syndrome-related disorders, ciliopathies, ARL13B, INPP5E, PI3K/Akt signaling, axon fasciculation, axon guidance, optogenetics, chemogenetics, projection neurons, axonal connectivity
MeSH terms
Abnormalities, Multiple, Animals, Axons, Cerebellum, Cilia, Disease Models, Animal, Eye Abnormalities, Mutation, Retina, Mice, Kidney Diseases, Cystic, Neurogenesis

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