Integrin alpha 8 beta 1

Integrin alpha 8 beta 1 is the most restricted beta-1 receptor, expressed chiefly on neurons, on mesenchymal cells of developing organs and in hair follicle dermal papillae. Its alpha-8 subunit recognizes RGD motifs in fibronectin, vitronectin, tenascin and latent TGF-beta-1, linking cells to specialized matrices during embryogenesis. In the nervous system it guides neurite outgrowth and cranial ganglion formation, and in the kidney it contributes to nephrogenesis. Alpha 8 beta 1 also participates in activating latent TGF-beta-1, placing it alongside alpha V beta 6 and alpha V beta 8 in TGF-beta biology. Because of its involvement in hair cycling and tissue remodeling, it is explored in dermatology and regenerative medicine research.