GPR37 and GPR37L1 agonist.

Prosaptide TX14(A) is derived from the active region of saposin C, itself derived from proteolytic processing of prosaposin, a 517-amino acid residue protein and neurotropic factor. Prosaptide Tx 14(A) is a potent agonist of G protein-coupled receptors GPR37 (also known as Parkin-associated endothelin receptor-like receptor Pael-R) and GPR37L1 with EC50 values of 5 nM for GPR37L1 and 7 nM for GPR37. Prosaptide TX14(A) can protect primary astrocytes against oxidative stress, prolongs cell survival in both Schwann cells and oligodendrocytes and has anti-allodynic properties in a rat model of gp120-induced tactile allodynia.

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