PTEN and prostate cancer: Among those sp-lncRNAs that were targeted by more than eight experimentally validated PTEN-regulating miRNAs, we chose two sp-lncRNAs lnc-2 (CTB-89H12.4, ENSG00000230551) and lnc-6 (Taurine Upregulated Gene 1 (TUG1), ENSG00000253352; Supplementary Data 3) that showed consistently the highest expression in two prostate cancer cell lines (DU145 and 22RV1) with wild-type PTEN for experimental validation (Fig. 2).