Decreased Sp1 Expression Mediates Downregulation of SHIP2 in Gastric Cancer Cells.

Past studies have shown that the Src homology 2-containing inositol 5-phosphatase 2 (SHIP2) is commonly downregulated in gastric cancer, which contributes to elevated activation of PI3K/Akt signaling, proliferation and tumorigenesis of gastric cancer cells. However, the mechanisms underlying the reduced expression of SHIP2 in gastric cancer remain unclear. While gene copy number variation analysis and exon sequencing indicated the absence of genomic alterations of , bisulfite genomic sequencing (BGS) showed promoter hypomethylation of in gastric cancer cells.