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Inhibition of microtubule nucleation at the neuronal centrosome compromises axon growth
Journal article   Peer reviewed

Inhibition of microtubule nucleation at the neuronal centrosome compromises axon growth

Fridoon J Ahmad, Harish C Joshi, Victoria E Centonze and Peter W Baas
Neuron (Cambridge, Mass.), v 12(2), pp 271-280
1994
PMID: 8110458

Abstract

We tested the dependence of axon growth on microtubule (MT) nucleation from the neuronal centrosome. Nocodazole diminished MTs in freshly plated neurons by >99%. Within 5 min of drug removal, MTs reassembled at the centrosome. This response was inhibited in cells microinjected with γ-tubulin antibody. Within 2 hr of drug removal, uninjected neurons grew >500 μm of axon. In roughly half of the antibody-injected cells, axon growth was abolished and MT levels were reduced by 8̃7% compared with uninjected cells. In the other antibody-injected cells, axon growth was compromised but not abolished, and MT levels were reduced by 3̃8%. Thus inhibition of MT nucleation at the centrosome hindered MT reassembly, and depending on the severity of this response, axon growth was either compromised or abolished.

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Collaboration types
Domestic collaboration
Web of Science research areas
Neurosciences
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