Chemical Genetic Identification of NDR1/2 Kinase Substrates AAK1 and Rabin8 Uncovers Their Roles in Dendrite Arborization and Spine Development

Sila K. Ultanir, Nicholas T. Hertz, Guangnan Li, Woo Ping Ge, Alma L. Burlingame, Samuel J. Pleasure, Kevan M. Shokat, Lily Yeh Jan, Yuh Nung Jan

Research output: Contribution to journalArticle

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Abstract

Dendrite arborization and synapse formation are essential for wiring the neural circuitry. The evolutionarily conserved NDR1/2 kinase pathway, important for polarized growth from yeast to mammals, controls dendrite growth and morphology in the worm and fly. The function of NDR1/2 in mammalian neurons and their downstream effectors were not known. Here we show that the expression of dominant negative (kinase-dead) NDR1/2 mutants or siRNA increase dendrite length and proximal branching of mammalian pyramidal neurons in cultures and in vivo, whereas the expression of constitutively active NDR1/2 has the opposite effect. Moreover, NDR1/2 contributes to dendritic spine development and excitatory synaptic function. We further employed chemical genetics and identified NDR1/2 substrates in the brain, including two proteins involved in intracellular vesicle trafficking: AAK1 (AP-2 associated kinase) and Rabin8, a GDP/GTP exchange factor (GEF) of Rab8 GTPase. We finally show that AAK1 contributes to dendrite growth regulation, and Rabin8 regulates spine development. The serine-threonine kinases NDR1 and NDR2 regulate dendrite morphogenesis and spine development. Ultanir et al. use chemical genetics to find NDR1/2 substrates and their phosphorylation sites in the mouse brain. Phosphorylation of AAK1 and Rabin8 by NDR1/2 regulates dendrite formation and spine development.

Original languageEnglish (US)
Pages (from-to)1127-1142
Number of pages16
JournalNeuron
Volume73
Issue number6
DOIs
StatePublished - Mar 22 2012

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Neuronal Plasticity
Dendrites
Spine
Phosphotransferases
Growth
Phosphorylation
Guanine Nucleotide Exchange Factors
Dendritic Spines
Pyramidal Cells
Protein-Serine-Threonine Kinases
GTP Phosphohydrolases
Brain
Guanosine Triphosphate
Morphogenesis
Diptera
Synapses
Small Interfering RNA
Mammals
Yeasts
Neurons

ASJC Scopus subject areas

  • Neuroscience(all)

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Chemical Genetic Identification of NDR1/2 Kinase Substrates AAK1 and Rabin8 Uncovers Their Roles in Dendrite Arborization and Spine Development. / Ultanir, Sila K.; Hertz, Nicholas T.; Li, Guangnan; Ge, Woo Ping; Burlingame, Alma L.; Pleasure, Samuel J.; Shokat, Kevan M.; Jan, Lily Yeh; Jan, Yuh Nung.

In: Neuron, Vol. 73, No. 6, 22.03.2012, p. 1127-1142.

Research output: Contribution to journalArticle

Ultanir, SK, Hertz, NT, Li, G, Ge, WP, Burlingame, AL, Pleasure, SJ, Shokat, KM, Jan, LY & Jan, YN 2012, 'Chemical Genetic Identification of NDR1/2 Kinase Substrates AAK1 and Rabin8 Uncovers Their Roles in Dendrite Arborization and Spine Development', Neuron, vol. 73, no. 6, pp. 1127-1142. https://doi.org/10.1016/j.neuron.2012.01.019
Ultanir, Sila K. ; Hertz, Nicholas T. ; Li, Guangnan ; Ge, Woo Ping ; Burlingame, Alma L. ; Pleasure, Samuel J. ; Shokat, Kevan M. ; Jan, Lily Yeh ; Jan, Yuh Nung. / Chemical Genetic Identification of NDR1/2 Kinase Substrates AAK1 and Rabin8 Uncovers Their Roles in Dendrite Arborization and Spine Development. In: Neuron. 2012 ; Vol. 73, No. 6. pp. 1127-1142.
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