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The Role of Adenosine Tone and Adenosine Receptors in Huntington's Disease.


ABSTRACT: Huntington's disease (HD) is a hereditary neurodegenerative disorder caused by a mutation in the IT15 gene that encodes for the huntingtin protein. Mutated hungtingtin, although widely expressed in the brain, predominantly affects striato-pallidal neurons, particularly enriched with adenosine A2A receptors (A2AR), suggesting a possible involvement of adenosine and A2AR is the pathogenesis of HD. In fact, polymorphic variation in the ADORA2A gene influences the age at onset in HD, and A2AR dynamics is altered by mutated huntingtin. Basal levels of adenosine and adenosine receptors are involved in many processes critical for neuronal function and homeostasis, including modulation of synaptic activity and excitotoxicity, the control of neurotrophin levels and functions, and the regulation of protein degradation mechanisms. In the present review, we critically analyze the current literature involving the effect of altered adenosine tone and adenosine receptors in HD and discuss why therapeutics that modulate the adenosine system may represent a novel approach for the treatment of HD.

SUBMITTER: Blum D 

PROVIDER: S-EPMC6049521 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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The Role of Adenosine Tone and Adenosine Receptors in Huntington's Disease.

Blum David D   Chern Yijuang Y   Domenici Maria Rosaria MR   Buée Luc L   Lin Chien-Yu CY   Rea William W   Ferré Sergi S   Popoli Patrizia P  

Journal of caffeine and adenosine research 20180601 2


Huntington's disease (HD) is a hereditary neurodegenerative disorder caused by a mutation in the IT15 gene that encodes for the huntingtin protein. Mutated hungtingtin, although widely expressed in the brain, predominantly affects striato-pallidal neurons, particularly enriched with adenosine A<sub>2A</sub> receptors (A<sub>2A</sub>R), suggesting a possible involvement of adenosine and A<sub>2A</sub>R is the pathogenesis of HD. In fact, polymorphic variation in the <i>ADORA2A</i> gene influences  ...[more]

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