Matrix Vesicles

Matrix vesicles are tiny, membrane-bound structures that originate from certain cells in developing cartilage and bone. They serve as specialized hubs where mineralization begins—the process of depositing minerals like calcium phosphate to harden the tissue. These vesicles contain enzymes and mineral ions that promote crystal formation, acting as the initial sites where the flexible cartilage starts transforming into rigid bone. In essence, matrix vesicles facilitate the early steps of bone and cartilage mineralization, playing a crucial role in skeletal development and growth.