Project

Characterising the potential neuroprotective properties of protease-activated receptor 2 (PAR2) activators in animal models of brain inflammation?


Supervisor(s)

Dr Trevor Bushell, Dr Hui-Rong Jiang

Area

Neuroscience,CNS disorders, Protease-activated receptor 2 (PAR2),neuroprotection, inflammation, EAE.

Description

Brain disorders are high on the World Health Organization's agenda with recent reports highlighting the economic burden of mental and neurological disorders in Europe being at an estimated cost of over €400 billion p.a.1,2. Hence novel targets for the treatment of these disorders are required and there has been increasing evidence in recent years that proteinase-activated receptor 2 (PAR2) may be a credible target.  PAR2 belongs to a novel family of G-protein coupled receptors (GPCR) that have received significant attention due to their proposed protective role in various inflammation-related CNS diseases including HIV dementia and Alzheimer's disease3.  However, determining the therapeutic potential of PAR2 in CNS disorders has been hindered due to the poor bioavailability and stability of current pharmacological tools5 as well as their inability to cross the blood brain barrier (BBB). To overcome these issues, novel PAR2 activators with high potency and good stability have been developed.  Our recent work has revealed that PAR2 activators are good candidates with which to examine the therapeutic potential of PAR2 in CNS disorders3-5.  Indeed we have novel data indicating that recently developed brain permeable PAR2 activators are neuroprotective in in vitro models of neurotoxicity as we'll as reducing clinical scores in animal models of brain inflammation. 

 

Hence, the aim of this project is to capitalise on our recent novel observations by testing the hypothesis that novel PAR2 activators are neuroprotective in in vivo models of neurological disorders.  To test this hypothesis, we will examine whether PAR2 activation is protective in in vivo models of brain inflammation, including experimental autoimmune encephalomyelitis that is frequently used to model aspects of multiple sclerosis.    

Techniques

In vivo models of CNS disorders, ELISA, FACS, immunohistochemistry, qPCR & western blotting.

References

1.      Nutt  & Goodwin (2011). Eur Neuropsychopharmacol 21: 495-499.

2.      Wittchen et al., (2011) Eur Neuropsychopharmacol 21: 655-679.

3.      Greenwood & Bushell (2010). J. Neurochem. 113:1471-80.

4.      Gan et al., (2011)  Brit. J. Pharmacol 163: 984-994.

Bushell et al., (2016). Curr. Drug Targets. DOI: 10.2174/1389450117666151209115232