Abstract:
:Nerve growth factor (NGF) holds a pivotal role in brain development and maintenance, been also involved in the pathophysiology of neurodegenerative diseases. Here, we provide evidence that a novel C17-spiroepoxy steroid derivative, BNN27, specifically interacts with and activates the TrkA receptor of NGF, inducing phosphorylation of TrkA tyrosine residues and down-stream neuronal survival-related kinase signaling. Additionally, BNN27 potentiates the efficacy of low levels of NGF, by facilitating its binding to the TrkA receptors and differentially inducing fast return of internalized TrkA receptors into neuronal cell membranes. Furthermore, BNN27 synergizes with NGF in promoting axonal outgrowth, effectively rescues from apoptosis NGF-dependent and TrkA positive sympathetic and sensory neurons, in vitro, ex vivo and in vivo in NGF null mice. Interestingly, BNN27 does not possess the hyperalgesic properties of NGF. BNN27 represents a lead molecule for the development of neuroprotective TrkA receptor agonists, with potential therapeutic applications in neurodegenerative diseases and in brain trauma.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Pediaditakis I,Efstathopoulos P,Prousis KC,Zervou M,Arévalo JC,Alexaki VI,Nikoletopoulou V,Karagianni E,Potamitis C,Tavernarakis N,Chavakis T,Margioris AN,Venihaki M,Calogeropoulou T,Charalampopoulos I,Gravanis Adoi
10.1016/j.neuropharm.2016.09.007subject
Has Abstractpub_date
2016-12-01 00:00:00pages
266-282eissn
0028-3908issn
1873-7064pii
S0028-3908(16)30383-5journal_volume
111pub_type
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