BIOLOGICAL RECEPTORS MEDIATE ANTIPROLIFERATIVE ACTION OF ATRIAL-NATRIURETIC-PEPTIDE IN CULTURED MESANGIAL CELLS

The mechanism of anti-proliferative action of atrial natriuretic peptide (ANP) was examined in cultured mesangial cells. HS-142-1, a selective antagonist for ANP biological receptors, inhibited ANP-induced cellular cGMP accumulation and prevented ANP-induced inhibition of both serum-stimulated incorporation of 3H-thymidine and cell proliferation. Des-[Gln18, Ser19, Gly20, Leu21, Gly22]-ANP4-23-NH2 (C-ANP) failed to inhibit 3H- thymidine incorporation. These results indicate that anti-proliferative action of ANP is mediated by the biological receptors in cultured mesangial cells. © 1993 Academic Press, Inc.