Overview:

PDE1A is a member of the cyclic nucleotide phosphodiesterase family that is stimulated by Ca2+-calmodulin. PDE1A is a cGMP-specific phosphodiesterase and hydrolyzes cGMP to 5'-GMP. Calmodulin is tightly bound to PDE1A in human spermatozoa and this results in permanent activation of PDE1A (1). Inhibition of PDE1A function significantly attenuates vascular smooth muscle cell growth by decreasing proliferation via G1 arrest and induces apoptosis (2). In vascular smooth muscle cell, PDE1A is important in regulating growth and survival of these cells and thus can contribute to the neointima formation in atherosclerosis and restenosis.

Gene Aliases:

HCAM1; HSPDE1A; MGC26303

Genbank Number:

NM_005019

References:

1. Lefièvre L, et al: Presence of cyclic nucleotide phosphodiesterases PDE1A, existing as a stable complex with calmodulin, and PDE3A in human spermatozoa. Biol Reprod. 2002 Aug;67(2):423-30.

2. Nagel D J, et al: Role of nuclear Ca2+/calmodulin-stimulated phosphodiesterase 1A in vascular smooth muscle cell growth and survival. Circ Res. 2006 Mar 31;98(6):777-84.