生长抑制因子(inhibitor of growth,ING)家族成员是候选的抑癌基因.ING蛋白参与磷脂酰肌醇介导的脂类信号转导通路及激素介导的通路,能够与组蛋白乙酰转移酶、去乙酰化酶等结合参与染色质的重构,调节基因的转录,与p53协同作用,抑制细胞生长,诱导细胞凋亡和DNA损伤修复.ING家族成员通过对基因表达的表观遗传学调控将细胞周期、细胞凋亡和衰老等生物学过程有机联系起来.
Inhibitor of growth (ING) family proteins belong to candidate tumor suppressor proteins. The ING proteins participate in PtdInsPs-mediated lipid signaling and hormone signaling pathways. They are associated with histone acetyltransferase, histone deacetylase and play a role in chromatin remodeling and gene transcription regulation. ING proteins regulate cell growth, apoptosis and DNA damage repair in p53 dependent manner; thus linking the processes of cell cycle regulation, apoptosis and cellular aging through epigenetic regulation of gene expression.