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. 2018 Jul 3;9(51):29619–29633. doi: 10.18632/oncotarget.25651

Figure 6. PCP4/PEP19 overexpression and knockdown effects on E1 production in SK-BR-3 cells.

Figure 6

The aromatase enzyme activities for E1 biosynthesis were measured in both secreted and non-secreted fractions. (A and B) Secreted fractions of E1 biosynthesis from aromatase activity in SK-BR-3 cells were significantly decreased after PCP4/PEP19 knockdown (A: PCP4 siRNA + as open column) and increased after PCP4/PEP19 overexpression (B: PCP4 plasmid + as open column). (C and D) Non-secreted fractions of E1 biosynthesis from aromatase activity were also significantly decreased after PCP4/PEP19 knockdown (C: PCP4 siRNA + as open column). E1 production in the cell lysate fractions increased after PCP4/PEP19 overexpression (D: PCP4 plasmid + as open column) with a certain trend toward significance (p=0.083). *p<0.05 and ** p<0.01 vs without knockdown or overexpression.