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Title

Melanocortin receptor accessory protein 2 (MRAP2) interplays with the zebrafish melanocortin 1 receptor (MC1R) but has no effect on its pharmacological profile

AuthorsCortés, Raúl ; Agulleiro Gozalbo, Maria Josep ; Navarro, S. ; Guillot, Raúl ; Sánchez, Elisa ; Cerdá-Reverter, José Miguel
KeywordsACTH
MSH
Stress
Zebrafish
Pigmentation
Skin
Issue Date15-May-2014
PublisherElsevier
CitationGeneral and Comparative Endocrinology 201: 30-36 (2014)
AbstractThe melanocortin system is probably one of the most complex hormonal systems since it integrates agonist, encoded in the proopiomelanocortin precursor, endogenous antagonist, agouti signaling protein and agouti-related protein, five different G-protein coupled receptors and two accessory proteins. These accessory proteins interact with melanocortin receptors to allow traffic to the plasma membrane or to regulate the pharmacological profile. The MC1R fill the extension locus, which is primarily responsible for the regulation of pigmentation. In zebrafish, both MC1R and MRAP2 system are expressed in the skin. We demonstrate that zebrafish MC1R physically, or closely, interacts with the MRAP2 system, although this interaction did not result in modification of the studied pharmacological profile. However, progressive fasting induced skin darkening but also an upregulation of the MRAP2 expression in the skin, suggesting an unknown role for MRAP2a that could involve receptor desensitization processes. We also demonstrate that crowding stress induces skin darkening and a downregulation of MC1R expression in the skin. © 2014 Elsevier Inc.
Publisher version (URL)https://doi.org/10.1016/j.ygcen.2014.03.009
URIhttp://hdl.handle.net/10261/144214
DOI10.1016/j.ygcen.2014.03.009
Identifiersissn: 1095-6840
Appears in Collections:(IATS) Artículos
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