Regulation by protein kinase A switching of axonal pathfinding of zebrafish olfactory sensory neurons through the olfactory placode-olfactory bulb boundary.

ABSTRACT: Cumulative evidence suggests that neural network formation requires an ingenious regulation of the attractive and repulsive responses of growing axons to guidance cues. We examined the role of intracellular protein kinase A (PKA) signaling in the axonal pathfinding of olfactory sensory neurons in transparent zebrafish embryos. Microinjection of an olfactory marker protein gene promoter-driven double-cassette vector directed the expression of both the dominant form of PKA and green fluorescent protein fused with the microtubule-associated protein tau in the same olfactory neurons. The dominant-negative form of PKA enhanced the turning of olfactory neuron axons in the olfactory placode, whereas the disturbance effect of the constitutively active form on the axonal pathfinding was prominent i

SUBMITTER: Yoshida T 

PROVIDER: S-EPMC6757733 | biostudies-literature | 2002 Jun

REPOSITORIES: biostudies-literature