Next, AGS (a GC cell line with a low level of endogenous LBP) was constructed with stable LBP overexpression, and MKN45 (a GC cell line with a high level of endogenous LBP) was constructed with stable LBP knockdown using short hairpin RNAs, respectively, which were verified by qRT-PCR (Supplementary Fig. 2B and C) and WB (Supplementary Fig. 2D). Here, LBP is linked to gastric cancer.