Long noncoding RNA(lnc RNA) play important roles in cancer progression. HOX transcript antisense RNA(HOTAIR) was observed upregulated in a variety of tumors. Over-expression of HOTAIR is a poor prognostic factor. HOTAIR interacts with Polycomb Repressive complex 2(PRC2), resulting in histone H3tri-methylated atlysine27(H3K27me3), which silences the expression of some down-stream genes, such as WIF-1,PTEN and p21, then mediated Wnt, Akt and p53 signaling pathways transduction. As a result, the properties of ...