Comparative Proteomic Analysis of the Telogen-to-Anagen Transition in Cashmere Goat Secondary Hair Follicles

This study investigates the proteomic changes associated with the telogen-to-anagen transition in secondary hair follicles (SHFs) of cashmere goats. Using tandem mass tag (TMT) labeling combined with LC-MS/MS, we identified 3,654 proteins, with 458 differentially expressed proteins (DEPs) between telogen and anagen phases. Key proteins such as ADAM17, SFRP1, and PPP1CA were found to play crucial roles in regulating SHF cycle transitions. These findings provide insights into the molecular mechanisms underlying cashmere fiber growth and offer potential targets for improving cashmere production.