GSTK1 and hepatocellular carcinoma: Transwell experiments showed that GSTK1 overexpression reduced the number of cells that passed through the chamber in HepG2 or Hep3B cells, and GSTK1 knockdown increased the number of cells that passed through the chamber in HCC-LM3 or Huh7 cells (Fig. 2E, N; Figure S2E, M).