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SAD kinases control the maturation of nerve terminals in the mammalian peripheral and central nervous systems.

ABSTRACT: Axons develop in a series of steps, beginning with specification, outgrowth, and arborization, and terminating with formation and maturation of presynaptic specializations. We found previously that the SAD-A and SAD-B kinases are required for axon specification and arborization in subsets of mouse neurons. Here, we show that following these steps, SAD kinases become localized to synaptic sites and are required within presynaptic cells for structural and functional maturation of synapses in both peripheral and central nervous systems. Deleting SADs from sensory neurons can perturb either axonal arborization or nerve terminal maturation, depending on the stage of deletion. Thus, a single pair of kinases plays multiple, sequential roles in axonal differentiation.

SUBMITTER: Lilley BN

PROVIDER: S-EPMC3903204 | biostudies-literature | 2014 Jan

REPOSITORIES: biostudies-literature

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SAD kinases control the maturation of nerve terminals in the mammalian peripheral and central nervous systems.

Lilley Brendan N BN Krishnaswamy Arjun A Wang Zhi Z Kishi Masashi M Frank Eric E Sanes Joshua R JR

Proceedings of the National Academy of Sciences of the United States of America 20140106 3

Axons develop in a series of steps, beginning with specification, outgrowth, and arborization, and terminating with formation and maturation of presynaptic specializations. We found previously that the SAD-A and SAD-B kinases are required for axon specification and arborization in subsets of mouse neurons. Here, we show that following these steps, SAD kinases become localized to synaptic sites and are required within presynaptic cells for structural and functional maturation of synapses in both ...[more]

PMID: 24395778

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