DOCK6 and infection: SGC-7901NM-Dock6-OE cells were then established by Lenti-Dock6 infection, and SGC-7901 M-Dock6-KD cells were established by infection with a lentivirus expressing Cas9 and Dock6-sgRNA, and the Dock6 protein expression levels in these cell lines were then detected by western blot (Fig. 2c).