Abstract:
:To assess a possible role for phospholipase D (PLD) in PC12 cell signal transduction and differentiation, we have investigated the expression of PLD in PC12 cells and found that the differentiation factor, nerve growth factor (NGF) increased PLD1 protein expression and phorbol 12-myristate 13 acetate (PMA)-induced PLD activity. During neuronal differentiation, this effect showed correlation to the protein expression levels of classical protein kinase C (PKC) isozymes, PKC-alpha and -beta II, but there was no significant increase in the protein level of RhoA, another regulatory factor for PLD activation. Interestingly, PLD1 was associated with PKC-alpha or beta II, and its association gradually increased as NGF-induced neuronal differentiation progressed. PKC inhibitor, Ro-31-8220, caused a significant inhibition of neurite outgrowth and PLD activity. Furthermore, PLD1 was constitutively associated with the Shc adaptor molecule, the overexpression of which is known to induce PLD activity and to induce neurite outgrowth. Taken together, the data in this study suggests that PLD1 is closely implicated in neuronal differentiation of PC12 cells.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Min DS,Ahn BH,Rhie DJ,Yoon SH,Hahn SJ,Kim MS,Jo YHdoi
10.1016/s0028-3908(01)00070-3subject
Has Abstractpub_date
2001-09-01 00:00:00pages
384-91issue
3eissn
0028-3908issn
1873-7064pii
S0028390801000703journal_volume
41pub_type
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