Emerging perspectives on the selective autophagy of melanosomes: melanophagy

Melanosomes are highly specialized organelles responsible for melanin synthesis, storage and transport in melanocytes, playing a central role in pigmentation and skin homeostasis. Although melanosome biogenesis and trafficking have been well characterized, emerging evidence emphasizes the importance of melanosome degradation in regulating pigment levels. Among the degradation pathways, melanophagy-a selective form of autophagy targeting melanosomes-has recently emerged as an important mechanism for the turnover of damaged, immature, or excess melanosomes. Here we highlight current insights into melanophagy mechanisms, including molecular regulators and signaling pathways. We also discuss the potential of modulating melanophagy as a novel cosmetic or therapeutic approach for managing hyperpigmentation, offering an alternative to traditional strategies focused solely on inhibiting melanin synthesis. By emphasizing the role of organelle clearance, melanophagy provides a new paradigm in the regulation of skin pigmentation.