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- W2030348181 abstract "Nerve growth factor (NGF), which has been shown to act as a morphological and neurochemical differentiating factor in PC12 cells, also protects PC12 cells from the toxicity of serum withdrawal and ischemia. By using a previously established in vitro model of ischemia, which incorporates the combination of anoxia with glucose deprivation (Boniece and Wagner: J Neurosci 13:4220-4228, 1993), we have been able to study the signal transduction pathways upon which NGF-induced survival is dependent. Here we demonstrate that inhibitors of the N-kinase and NGF-induced neuritogenesis, 6-thioguanine and 2-aminopurine, prevent the protective effects of NGF, while they have little, if any, effect on the protection conferred by epidermal growth factor (EGF) or dbcAMP. This suggests that only NGF acts by a mechanism that depends strongly on the N-kinase. Furthermore, the methyltransferase inhibitor 5'-deoxy-5'-methylthioadenosine (MTA), which also inhibits NGF-induced neuritogenesis, inhibits the protective effect of NGF but not the protective effects of EGF or dbcAMP. Thus, the neuroprotective effect of NGF requires some of the same signal transduction steps used by NGF to promote differentiation and neurite formation. Furthermore, we found that exposure of PC12 cells to retinoic acid, which promotes the differentiation and inhibits the growth of PC12 cells, also improves cell survival during ischemia. In addition, a combination of NGF and retinoic acid was more effective than either agent alone. It is likely that these two agents confer protection by independent pathways." @default.
- W2030348181 created "2016-06-24" @default.
- W2030348181 creator A5044409463 @default.
- W2030348181 creator A5045586149 @default.
- W2030348181 date "1995-01-01" @default.
- W2030348181 modified "2023-09-24" @default.
- W2030348181 title "NGF protects PC12 cells against ischemia by a mechanism that requires the N-kinase" @default.
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- W2030348181 doi "https://doi.org/10.1002/jnr.490400102" @default.
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