Proliferating cell nuclear antigen (PCNA) is a growth-regulated protein which coordinates events in DNA replication, DNA repair, cell cycle control and epigenetic inheritance. PCNA gene is regulated at both transcriptional and post-transcriptional levels.

• 增殖细胞核抗原(proliferating cell nuclear antigen,PCNA,PCNA)是一种生长调控蛋白,在DNA复制、修复、细胞周期调控、基因外遗传(epigenetic inheritance)等事件的协同机制中发挥重要功能。