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Novel molecular targets of the neuroprotective/neurorescue multimodal iron chelating drug M30 in the mouse brain.

Abstract：

:The novel multifunctional brain permeable iron, chelator M30 [5-(N-methyl-N-propargyaminomethyl)-8-hydroxyquinoline] was shown to possess neuroprotective activities in vitro and in vivo, against several insults applicable to various neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis. In the present study, we demonstrate that systemic chronic administration of M30 resulted in up-regulation of hypoxia-inducible factor (HIF)-1α protein levels in various brain regions (e.g. cortex, striatum, and hippocampus) and spinal cord of adult mice. Real-time RT-PCR revealed that M30 differentially induced HIF-1α-dependent target genes, including vascular endothelial growth factor (VEGF), erythropoietin (EPO), enolase-1, transferrin receptor (TfR), heme oxygenase-1 (HO-1), inducible nitric oxide synthase (iNOS), and glucose transporter (GLUT)-1. In addition, mRNA expression levels of the growth factors, brain-derived neurotrophic factor (BDNF) and glial cell-derived neurotrophic factor (GDNF) and three antioxidant enzymes (catalase, superoxide dismutase (SOD)-1, and glutathione peroxidase (GPx)) were up-regulated by M30 treatment in a brain-region-dependent manner. Signal transduction immunoblotting studies revealed that M30 induced a differential enhanced phosphorylation of protein kinase C (PKC), mitogen-activated protein kinase (MAPK)/ERK kinase (MEK), protein kinase B (PKB/Akt), and glycogen synthase kinase-3β (GSK-3β). Together, these results suggest that the multifunctional iron chelator M30 can up-regulate a number of neuroprotective-adaptive mechanisms and pro-survival signaling pathways in the brain that might function as important therapeutic targets for the drug in the context of neurodegenerative disease therapy.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Kupershmidt L,Weinreb O,Amit T,Mandel S,Bar-Am O,Youdim MB

doi

10.1016/j.neuroscience.2011.03.040

subject

Has Abstract

pub_date

2011-08-25 00:00:00

pages

345-58

eissn

0306-4522

issn

1873-7544

pii

S0306-4522(11)00322-8

journal_volume

189

pub_type

杂志文章

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