Journal of Molecular Neuroscience

, Volume 27, Issue 1, pp 43–64

Second-generation antipsychotic drugs, olanzapine, quetiapine, and clozapine enhance neurite outgrowth in PC12 cells via P13K/AKT, ERK, and pertussis toxin-sensitive pathways

Original Article

DOI: 10.1385/JMN:27:1:043

Cite this article as:
Lu, XH. & Dwyer, D.S. J Mol Neurosci (2005) 27: 43. doi:10.1385/JMN:27:1:043

Abstract

Second-generation antipsychotic drugs, olanzapine, quetiapine, and clozapine, were found to enhance neurite outgrowth induced by nerve growth factor (NGF) in PC12 cells. These drugs increased the number of cells bearing neurites, the length of primary neurites, and the size of the cell body of NGF-differentiated PC12 cells. In addition, the drugs induced sprouting of neurite-like processes in PC12 cells in the absence of NGF. Olanzapine, quetiapine, and clozapine enhanced the phosphorylation of Akt and ERK in combination with NGF, and specific inhibitors of these pathways attenuated these effects. Pretreatment of cells overnight with pertussis toxin had no effect on NGF-induced differentiation but significantly decreased the effects of the antipsychotic drugs on neurite outgrowth, suggesting that Gi/Go-coupled receptors are involved in the response to drug. A better understanding of the mechanisms underlying the effects of the second-generation drugs might suggest new therapeutic targets for enhancement of neurite outgrowth.

Index Entries

Akt antipsychotics ERK G proteins nerve growth factor neurite outgrowth 

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Copyright information

© Humana Press Inc 2005

Authors and Affiliations

  1. 1.Department of PharmacologyLouisiana State University Health Sciences CenterShreveport
  2. 2.Department of PsychiatryLouisiana State University Health Sciences CenterShreveport

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