摘要
酸性神经酰胺酶(AC)是神经酰胺代谢途径的关键酶,将促凋亡的神经酰胺水解为鞘氨醇,并通过鞘氨醇1激酶的作用代谢为有丝分裂的鞘氨醇1磷酸。 AC的细胞内水平决定了神经酰胺/鞘氨醇-1-磷酸变阻器的稳定性,而后者又决定了细胞的命运。通过将促凋亡的神经酰胺转化为抗凋亡的神经鞘氨醇-1-磷酸,在癌症状态下上调的AC表达充当“双刃剑”,其中一方面降低了神经酰胺的水平,另一方面, 1-磷酸鞘氨醇的水平增加,因此完全加重了癌症的进展。另外,AC表达上调的癌细胞表现出增强的细胞增殖,转移,化学抗性,放射抗性,并且过去已开发出许多策略来有效地靶向该酶。基因沉默和AC的药理抑制作用使耐药细胞对化学疗法/放射疗法敏感,从而促进细胞死亡。这篇综述的核心目标是探讨AC介导的肿瘤进展以及AC抑制剂在各种癌细胞系/模型中的潜在作用。
关键词: 酸性神经酰胺酶,细胞凋亡,癌症,细胞增殖,酸性神经酰胺酶抑制剂,神经酰胺,1-磷酸-鞘氨醇。
图形摘要
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