MC1R
MC1R (Melanocyte-stimulating hormone receptor) is a gene. In the public catalogues the evidence so far is association rather than a proven role. Tied to Skin cancer, Melanoma and Basal cell carcinoma.
Overview
G protein-coupled receptor that binds melanocyte-stimulating hormones (alpha, beta, and gamma-MSH) and adrenocorticotropic hormone/ACTH, which are peptide products of the POMC precursor protein. Upon activation, MC1R couples with the G(s) protein, stimulating adenylate cyclase and activating the cAMP-dependent signalling pathway. This activation promotes melanogenesis, resulting in the production of eumelanin (black/brown) and pheomelanin (red/yellow) in melanocytes.
Open Targets scores its association with cancer at 0.60 (direct and indirect evidence; datatypes literature 0.95, animal model 0.48, genetic association 0.71).
- Target · the protein and the cell it sits on
- Drug · antibody, small molecule, cell or radioligand
- Effect · signal, damage or kill
In plain words · MC1R (Melanocyte-stimulating hormone receptor) is a gene. In the public catalogues the evidence so far is association rather than a proven role. Tied to Skin cancer, Melanoma and Basal cell carcinoma.
- 1 · What it is
MC1R (Melanocyte-stimulating hormone receptor) is a gene. In the public catalogues the evidence so far is association rather than a proven role. Tied to Skin cancer, Melanoma and Basal cell carcinoma.
- 2 · What goes wrong in cancer
G protein-coupled receptor that binds melanocyte-stimulating hormones (alpha, beta, and gamma-MSH) and adrenocorticotropic hormone/ACTH, which are peptide products of the POMC precursor protein.
- 3 · How drugs use it
No product in this corpus aims at MC1R yet. Drugs bind the molecule precisely: to switch it off, flag the cell for the immune system, or deliver a payload.
External identifiers
Sources: HGNC HGNC:6929 (approved symbol, name, aliases, locus and cross-references (hgnc_complete_set.txt)); UniProt Q01726 (protein name, function text, keywords and locations (REST API)); Open Targets ENSG00000258839 (association with cancer (MONDO_0004992) 0.60; per-cancer scores at or above 0.5: melanoma 0.62, skin cancer 0.58, basal cell carcinoma 0.53 (GraphQL API, CC0))
Biology
G protein-coupled receptor that binds melanocyte-stimulating hormones (alpha, beta, and gamma-MSH) and adrenocorticotropic hormone/ACTH, which are peptide products of the POMC precursor protein. Upon activation, MC1R couples with the G(s) protein, stimulating adenylate cyclase and activating the cAMP-dependent signalling pathway. This activation promotes melanogenesis, resulting in the production of eumelanin (black/brown) and pheomelanin (red/yellow) in melanocytes. MC1R interacts with G protein-coupled receptor opsin 3/OPN3, which couples to G(i) proteins and inhibits the alpha-MSH-induced cAMP response, thereby reducing melanin synthesis. Binding to Agouti/ASP precludes alpha-MSH-induced signalling, thereby down-regulating melanogenesis. Additionally, interaction with MGRN1 displaces the G(s) protein, further suppressing MC1R signalling. Location: Cell membrane (UniProt). Locus 16q24.3 (HGNC).
- Skin cancer: Open Targets association 0.58 with skin cancer (MONDO_0002898)
- Melanoma: Open Targets association 0.62 with melanoma (MONDO_0005105)
- Basal cell carcinoma: Open Targets association 0.53 with basal cell carcinoma (MONDO_0020804)
Notes
top- Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: none stated by the sources. Evidence tier "association-only" is the strongest of those signals.
- Prevalence not recorded: none of the sources gives a positivity rate.
Latest papers
topQuery for this target: (TITLE:"MC1R" OR ABSTRACT:"MC1R" OR TITLE:"melanocortin 1 receptor" OR ABSTRACT:"melanocortin 1 receptor" OR TITLE:"Melanocyte-stimulating hormone receptor" OR ABSTRACT:"Melanocyte-stimulating hormone receptor" OR TITLE:"MSH-R" OR ABSTRACT:"MSH-R") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about MC1R, not a curated reading list.
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