How is #melanin production regulated? Study shows that on UV exposure #MC1R enters #PrimaryCilia, interacts with #BBSome & triggers signaling that stimulates #melanogenesis. The #redhead MC1R mutation affects BBSome binding, reducing melanin #PLOSBiology https://plos.io/4eZYebx
Melanocortin 1 receptor mediates melanin production by interacting with the BBSome in primary cilia

Melanin production in the skin protects us against UV damage, but how? These authors show that upon UV exposure MC1R enters primary cilia and interacts with the BBSome, triggering the downstream signalling that stimulates melanogenesis. Red-haired people have a genetic variation in MC1R that affects this interaction, leading to defective melanin production.

#Mitochondrial calcium signaling in #pigmentation: @jyotitanwar1993 @MotianiRaj1 &co show that mito Ca2+ uniporter MCU regulates #melanogenesis by activating NFAT2 & Keratin 5; targeting this axis could be used to treat pigmentary disorders #PLOSBiology https://plos.io/4eswpbV
Mitochondrial calcium uptake orchestrates vertebrate pigmentation via transcriptional regulation of keratin filaments

The authors explore the potential role of mitochondrial calcium signaling in vertebrate pigmentation. They show that mitochondrial Ca2+ uniporter (MCU) regulates melanogenesis via the activation of NFAT2 and Keratin 5, and that targeting this signalling axis could be used to treat pigmentary disorders.