TERT and cancer: Western blot analysis confirmed the inhibitory effect of LiCl on GSK3β, as LiCl treatment resulted in increased levels of phosphorylation of serine 9 residue (pSer9) GSK3β [28,29] in both the EM-TERT and AN3CA cell lines, with AN3CA cancer cells showing a higher pSer9/total GSK3β ratio (Figure S1).