[MicroRNA-26a and Tumor].

MicroRNAs are a class of small noncoding RNAs (20-22 nucleotides). MicroRNAs regulate gene expression by directly binding gene's 3'-UTR regions. Many studies reveal that miRNAs play roles in tumorigenesis. MiR-26a plays different roles in different types of cancer, and participates in tumor growth, invasion, metastasis, angiogenesis, metabolism, diagnosis and prognosis. This review summarizes the progress of miR-26a study in cancer.