The regulation of exon-specific brain-derived neurotrophic factor mRNA expression by protein kinase C in rat cultured dorsal root ganglion neurons
| Autor: | Yosuke Yoshida, Yoshihiro Nakata, Kazue Hisaoka-Nakashima, Nobue Hidaka, Norimitsu Morioka, Yoki Nakamura |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Male
CREB chemistry.chemical_compound Dorsal root ganglion Neurotrophic factors Ganglia Spinal medicine Animals RNA Messenger Enzyme Inhibitors Rats Wistar Molecular Biology Cells Cultured Protein Kinase C Protein kinase C Neurons Brain-derived neurotrophic factor biology Kinase Brain-Derived Neurotrophic Factor General Neuroscience Exons Molecular biology Rats medicine.anatomical_structure nervous system chemistry biology.protein Neurology (clinical) Mitogen-Activated Protein Kinases Signal transduction Rottlerin Signal Transduction Developmental Biology |
| Zdroj: | Brain Research. 1509:20-31 |
| ISSN: | 0006-8993 |
| DOI: | 10.1016/j.brainres.2013.03.015 |
| Popis: | Although brain-derived neurotrophic factor (BDNF) is localized in primary sensory neurons and has crucial roles in nociceptive transduction, the mechanisms involved in regulation of BDNF exon-specific mRNA expression in dorsal root ganglion (DRG) neurons have yet to be determined. Rat primary cultures of DRG neurons were stimulated with phorbol-12-myristate-13-acetate (PMA), a potent activator of protein kinase C (PKC), which resulted in the robust expression of both BDNF mRNA and protein. Among each BDNF mRNA exon, it was found that exons I, IV and VI were especially induced after PMA stimulation. The induction of these exons was significantly blocked by Gö6983 (a broad spectrum PKC inhibitor), Gö6976 (a conventional PKCs and PKCμ inhibitor), and rottlerin (a PKCδ inhibitor), but not by a PKCε inhibitor. The effect of PMA on exons I and VI was blocked by either U0126 (a MAP kinase kinase (MEK) inhibitor) or SB202190 (a p38 inhibitor), and PMA's effect on exon IV was inhibited by U0126 but not by SB202190. Furthermore, the activation of cAMP-responsive element-binding protein (CREB) was associated with the induction of exons I and IV, and the activation of nuclear factor-κB (NF-κB) contributed to the induction of exons I, IV and VI. These results show that the activation of PKCs induces the expression of BDNF mRNA exons I, IV and VI through exon-specific mechanisms, including extracellular signal-regulated kinase, p38, CREB and NF-κB, in cultured DRG neurons. These data suggest multiple pathways in the expression of BDNF in nociceptive sensory neurons. |
| Databáze: | OpenAIRE |
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