Fig. 3B). The intersection of these two cell types obtained 24 proteins that may interact with PDHPS1 both in SKOV3 cells and A2780 cells (Supplementary Table S2).Among the 24 proteins, PTPA, ACADM, BZW2, BCCIP, ARP3 are closely related to the occurrence and development of tumors (18–22). Notably, PTPA was the most abundant in the samples and caught our attention. A subsequent peptide pull down assay followed by Western blot confirmed that PDHPS1 could bind to PTPA (Fig. 3C). However, PTPA protein levels were similar between PDHPS1 treated or the scrambled peptide-treated cells, indicating that PDHPS1 did not change the protein expression level of PTPA (Fig. 3D).