miR-34b表达调控及其在肿瘤发生中作用的研究进展

Expression and regulation of miR-34b and the research progress of its function in tumorigenesis

miRNA是一种内源性的非编码小RNA,在转录后水平调控基因表达,具有高度保守性和组织特异性.其广泛参与调控细胞的生长、发育等许多复杂生命过程,在多种肿瘤的发病中起重要作用.miR-34b为新近发现并备受关注的miRNA之一,受p53及其启动子甲基化等因素的调节,并通过调控多种靶分子参与调节细胞的增殖与凋亡,对肿瘤的发生与调控起作用,在肿瘤的治疗与预后中有广阔的应用前景.文章就miR-34b及其与肿瘤关系的研究进展进行综述.

miRNA is a kind of small,endogenous noncoding RNA which regulates gene expression in post-transcription level and is highly conserved and tissue-specificity,miRNA generally participates the regulation of many complicated vital process,such as cell growth,development and also plays an important role in the pathogenesis of many kinds of tumors,miR-34b is a newly discovered miRNA,which is regulated by p53,promoter methylation and so on.miR-34b can regulate cellular proliferation and apoptosis,and also involves in the generation and regulation of tumor,which suggests wide application prospect in therapy and prognosis of tumor.This review will focus on the progress of miR-34b and its relationship with tumor.