Table 1.

List of activated PSC proteins selected for further validation. The activated PSC secretome was sorted by total number of sequenced peptides per protein to estimate relative abundance. The most abundant proteins were screened via literature search to identify those most likely to play a role in cancer progression. These proteins were then chosen for further validation by western blot and IHC analysis.

GI accession #	Abbreviation	Protein Name
gi|5453886	SERPINI2	serpin peptidase inhibitor, clade I (pancpin), member 2
gi|4505863	PLAU	urokinase plasminogen activator preprotein
gi|10835159	SERPINE1	plasminogen activator inhibitor - 1
gi|11342666	MMP2	matrix metallopeptidase 2
gi|4507467	TGFBI	transforming growth factor, beta-induced, 68kDa
gi|5031863	LGALS3BP	galectin-3-binding protein
gi|33286418	PKM2	pyruvate kinase, muscle isoform 1
gi|66392203	NME1	nucleotide diphosphate kinase 1
gi|161702986	EZR	ezrin
gi|50845386	ANXA2	annexin A2
gi|21361091	UCHL1	ubiquitin carboxyl-terminal esterase L1