Class A and C GPCR Dimers in Neurodegenerative Diseases

Ana   B.   Caniceiro; Beatriz      Bueschbell; Anke   C.   Schiedel; Irina   S.   Moreira
doi:10.2174/1570159X20666220327221830
Abstract

Neurodegenerative diseases affect over 30 million people worldwide with an ascending trend. Most individuals suffering from these irreversible brain damages belong to the elderly population, with onset between 50 and 60 years. Although the pathophysiology of such diseases is partially known, it remains unclear upon which point a disease turns degenerative. Moreover, current therapeutics can treat some of the symptoms but often have severe side effects and become less effective in long-term treatment. For many neurodegenerative diseases, the involvement of G proteincoupled receptors (GPCRs), which are key players of neuronal transmission and plasticity, has become clearer and holds great promise in elucidating their biological mechanism. With this review, we introduce and summarize class A and class C GPCRs, known to form heterodimers or oligomers to increase their signalling repertoire. Additionally, the examples discussed here were shown to display relevant alterations in brain signalling and had already been associated with the pathophysiology of certain neurodegenerative diseases. Lastly, we classified the heterodimers into two categories of crosstalk, positive or negative, for which there is known evidence.
Keywords: G protein-coupled receptors, dimers, class A, class C, neurodegenerative diseases, brain.
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DOI https://dx.doi.org/10.2174/1570159X20666220327221830	Print ISSN 1570-159X
Publisher Name Bentham Science Publisher	Online ISSN 1875-6190
Current Neuropharmacology

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