Identification of Skin-Expressed Genes Possibly Associated with Wool Growth Regulation of Aohan Fine Wool Sheep

The study investigated gene expression in Aohan fine wool sheep to identify genes potentially regulating wool growth. Researchers used microarray and proteomic technology to compare gene expression in wool-bearing body side skin and non-wool-bearing groin skin, finding 1,494 differentially expressed probes. Of these, 602 were up-regulated and 892 down-regulated in the body side skin. Key gene families involved in hair follicle growth, such as growth factors and keratins, showed differential expression. Verification through qPCR confirmed the microarray data's reliability. The study suggested that wool growth regulation might share gene networks with hair growth, identifying specific genes involved in different phases of the hair growth cycle. Proteomic analysis revealed 187 protein spots with significant expression differences, with 46 proteins identified. Despite limitations like a small sample size of 3 sheep and the use of microarray technology, the findings provided insights into the molecular mechanisms of wool growth, although further research was needed to confirm these results.