Description
Atrasentan Hydrochloride is the orally available hydrochloride salt of pyrrolidine-3-carboxylic acid with potential antineoplastic activity. As a selective antagonist of the endothelin-A (ETA) receptor, atrasentan binds selectively to the ETA receptor, which may result in inhibition of endothelin-induced angiogenesis and tumor cell proliferation.
Uses
Atrasentan belongs to a pyrrolidine and benzodioxole derivative. It is a selective antagonist of the endothelin-A (ETA) receptor and binds selectively to the ETA receptor, which may result in the inhibition of endothelin-induced angiogenesis and tumor cell proliferation. Its potential therapeutic uses include the treatment of diabetic nephropathies and as an antineoplastic agent.
Biological Activity
Atrasentan is a selective endothelin ETA receptor antagonist with an IC50 of 0.2 nM for ETA compared to 190 nM for ETB receptors. It blocks blocks endothelin induced cell proliferation, and has been investigated as a possible treatment for prostate cancer, and more recently for therapy for diabetic kidney disease.
in vivo
Atrasentan hydrochloride (ABT-627 hydrochloride) (3 mg/kg, p.o.) inhibits the pressor response induced by big endothelin-1 (1 nmol/kg) in pithed rats[1]. Aatrasentan (ABT-627, 10 mg/kg, i.p.) inhibits the C4-2b tumor growth within the bone environment to some extent in the SCID-hu model[2].
