Krüpple样因子5在成牙本质细胞中的表达及临床意义

目的 :研究转录因子Krüpple样因子5(Krüpple-like factor 5,KLF5)在人牙髓-牙本质复合体中的表达,探讨其在成牙本质细胞分化及牙本质形成过程中的作用。方法:应用免疫组织化学方法检测KLF5在人牙髓-牙本质复合体中及牙髓细胞矿化诱导过程中的表达,Western印迹法检测KLF5在成牙本质细胞分化过程中的表达变化。采用SPSS17.0软件包对实验结果进行单因素方差分析和Tukey检验。结果 :在正常及龋坏牙中,KLF5表达于人成牙本质细胞和成牙本质样细胞,而在牙本质及前期牙本质中无表达。细胞免疫组织化学结果显示,在矿化诱导0、7、14 d的人牙髓细胞中,KLF5在细胞核中呈强阳性表达。Western印迹结果显示,随着矿化诱导时间的延长,KLF5蛋白表达量逐渐增加。诱导14~21 d时,KLF5表达量增加最显著。结论:KLF5可能参与成牙本质细胞分化及牙本质的形成过程。

Current knowledge of Krüppel-like factor 5 and vascular remodeling: providing insights for therapeutic strategies

Vascular remodeling is a pathological basis of various disorders. Therefore, it is necessary to understand the occurrence, prevention, and treatment of vascular remodeling. Krüppel-like factor 5 (KLF5) has been identified as a significant factor in cardiovascular diseases during the last two decades. This review provides a mechanism network of function and regulation of KLF5 in vascular remodeling based on newly published data and gives a summary of its potential therapeutic applications. KLF5 modulates numerous biological processes, which play essential parts in the development of vascular remodeling, such as cell proliferation, phenotype switch, extracellular matrix deposition, inflammation, and angiogenesis by altering downstream genes and signaling pathways. Considering its essential functions, KLF5 could be developed as a potent therapeutic target in vascular disorders.