PDE3A（phosphodiesterase 3A），癌症关联基因，基因ID：5139，该基因编码cGMP抑制环核苷酸磷酸二酯酶（cGI-PDE）家族的一个成员cGI-PDE酶能水解cAMP和cGMP，通过调节细胞内环核苷酸信号的幅度和持续时间，在许多细胞过程中发挥重要作用编码蛋白介导血小板聚集，并通过调节血管平滑肌收缩和舒张在心血管功能中发挥重要作用。编码蛋白抑制剂可能对治疗充血性心力衰竭有效。另外，已经观察到该基因编码多个亚型的剪接转录变体[由RefSeq提供，2011年9月]This gene encodes a member of the cGMP-inhibited cyclic nucleotide phosphodiesterase (cGI-PDE) family. cGI-PDE enzymes hydrolyze both cAMP and cGMP， and play critical roles in many cellular processes by regulating the amplitude and duration of intracellular cyclic nucleotide signals. The encoded protein mediates platelet aggregation and also plays important roles in cardiovascular function by regulating vascular smooth muscle contraction and relaxation. Inhibitors of the encoded protein may be effective in treating congestive heart failure. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq， Sep 2011]。