Hyaluronic acid sodium salt

Hyaluronic acid sodium salt (CAS No.: 9067-32-7) is an anionic, nonsulfated glycosaminoglycan composed of repeating disaccharide units and widely distributed in connective, epithelial, and neural tissues as a major component of the extracellular matrix. Synthesized at the plasma membrane, this high-molecular-weight biopolymer contributes to the structural integrity and viscoelastic properties of biological matrices, resembling synovial fluid in its lubricating and shock-absorbing characteristics. It plays critical roles in regulating cell proliferation, migration, and adhesion, and is actively involved in physiological processes such as embryonic morphogenesis, tissue remodeling, and wound repair. Mechanistically, hyaluronic acid sodium salt has been shown to modulate key signaling pathways including PI3K-Akt and to influence enzymatic activities and matrix dynamics, partly through interactions that facilitate proteolytic enzyme localization such as MMP-9 at the cell surface. Elevated levels are associated with enhanced tumor cell invasion, angiogenesis, and lymphangiogenesis, making it relevant for studies of cancer progression and microenvironmental regulation. In vitro, its biological effects are typically observed across nanomolar to micromolar concentration ranges depending on molecular weight and experimental system. This compound is widely utilized in cell-based assays, extracellular matrix modeling, and drug delivery research, including its use as a carrier to modulate the activity of small molecules, with experimental concentrations or dosing regimens varying according to specific study designs and objectives.