Unknown

Dataset Information

0

Impairment of cocaine-mediated behaviours in mice by clinically relevant Ras-ERK inhibitors.


ABSTRACT: Ras-ERK signalling in the brain plays a central role in drug addiction. However, to date, no clinically relevant inhibitor of this cascade has been tested in experimental models of addiction, a necessary step toward clinical trials. We designed two new cell-penetrating peptides - RB1 and RB3 - that penetrate the brain and, in the micromolar range, inhibit phosphorylation of ERK, histone H3 and S6 ribosomal protein in striatal slices. Furthermore, a screening of small therapeutics currently in clinical trials for cancer therapy revealed PD325901 as a brain-penetrating drug that blocks ERK signalling in the nanomolar range. All three compounds have an inhibitory effect on cocaine-induced ERK activation and reward in mice. In particular, PD325901 persistently blocks cocaine-induced place preference and accelerates extinction following cocaine self-administration. Thus, clinically relevant, systemically administered drugs that attenuate Ras-ERK signalling in the brain may be valuable tools for the treatment of cocaine addiction.

SUBMITTER: Papale A 

PROVIDER: S-EPMC4996650 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications


Ras-ERK signalling in the brain plays a central role in drug addiction. However, to date, no clinically relevant inhibitor of this cascade has been tested in experimental models of addiction, a necessary step toward clinical trials. We designed two new cell-penetrating peptides - RB1 and RB3 - that penetrate the brain and, in the micromolar range, inhibit phosphorylation of ERK, histone H3 and S6 ribosomal protein in striatal slices. Furthermore, a screening of small therapeutics currently in cl  ...[more]

Similar Datasets

| S-EPMC7594568 | biostudies-literature
| S-EPMC5780462 | biostudies-literature
| S-EPMC10851415 | biostudies-literature
| S-EPMC3966525 | biostudies-literature
| S-EPMC4542271 | biostudies-literature
| S-EPMC8812530 | biostudies-literature
| S-EPMC5438109 | biostudies-literature
| S-EPMC6215918 | biostudies-literature
| S-EPMC2910545 | biostudies-literature
| S-EPMC7826512 | biostudies-literature