ERKl/2 signaling pathway mediates heme oxygenase-1 up-regulation by minocycline in PC12 cells exposed to oxygen glucose deprivation / 南方医科大学学报
Journal of Southern Medical University
;
(12): 117-120, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-239235
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of minocycline in promoting the survival of pheochromocytoma (PCI2) cells exposed to oxygen glucose deprivation (OGD) and explore the underlying mechanisms.</p><p><b>METHODS</b>An in vitro cell model of cerebral ischemia was established by OGD for 6 h in PCI2 cells with pretreatment with minocycline or an ERK1/2 inhibitor. At 24 h after OGD injury, the cells were evaluated for cell viability by MTT assay and expressions of heme oxygenase-I (HO-I) and phospholylated extracellular signal-regulated protein kinase 1/2 (ERK1/2) by Western blotting.</p><p><b>RESULTS</b>The cell viability decreased dramatically following OGD. Pretreatment with minocycline (O.I-IO JJ.mol/L) induced a significant increase in the cell viability after OGD and caused up-regulation of HO-I protein and enhanced ERK1/2 phospholylation, and the effects were especially obvious with 1 JJ.mol/L minocycline and were abolished by inhibition of ERK1/2 activity with UOI26 (IO JJ.mol/L).</p><p><b>CONCLUSION</b>Minocycline can protect PCI2 cells against OGD-induced toxicity by up-regulating HO-I protein expression through ERKl/2 signaling pathways.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Oxygen
/
Pharmacology
/
Cell Hypoxia
/
Up-Regulation
/
Cell Survival
/
Brain Ischemia
/
PC12 Cells
/
MAP Kinase Signaling System
/
Glucose
/
Heme Oxygenase (Decyclizing)
Limits:
Animals
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2015
Type:
Article
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