Detail for HAS2

Full Name

Hyaluronan synthase 2

Uniprot ID

Gene Name



Related Disease

  • Breast cancer [ref.1]

Therapy Method


HAS2 (Hyaluronan Synthase 2) is a Protein Coding gene. Diseases associated with HAS2 include Lipoblastoma and Mucopolysaccharidosis, Type Ix. Among its related pathways are Metabolism and Glycosaminoglycan metabolism. Gene Ontology (GO) annotations related to this gene include hyaluronan synthase activity. An important paralog of this gene is HAS3.

Hyaluronan or hyaluronic acid is a high molecular weight unbranched polysaccharide synthesized by a wide variety of organisms from bacteria to mammals, and is a constituent of the extracellular matrix. It consists of alternating glucuronic acid and N-acetylglucosamine residues that are linked by beta-1-3 and beta-1-4 glycosidic bonds. Hyaluronic acid is synthesized by membrane-bound synthase at the inner surface of the plasma membrane, and the chains are extruded via ABC-Transporter into the extracellular space. It serves a variety of functions, including space filling, lubrication of joints, and provision of a matrix through which cells can migrate. Hyaluronic acid is produced during wound healing and tissue repair to provide a framework for ingrowth of blood vessels and fibroblasts. Changes in the serum concentration of hyaluronic acid are associated with inflammatory and degenerative arthropathies such as rheumatoid arthritis. In addition, the interaction of hyaluronic acid with the leukocyte receptor CD44 is important in tissue-specific homing by leukocytes, and overexpression of hyaluronic acid receptors has been correlated with tumor metastasis.

Related Pathway/CSCs feature

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  • [1] Hyaluronan synthase HAS2 promotes tumor progression in bone by stimulating the interaction of breast cancer stem-like cells with macrophages and stromal cells.
    Cancer Res.2012 Jan 15;72(2):537-47. [ 22113945 ]

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