(A) Q-PCR quantification of PiT-1 mRNA expression of PiT-1 ΔSM VSMCs transduced with vector control, PiT-1 WT, PiT-1-E74K, PiT-1-S132A, or PiT-1-S623A confirmed stable expression. (B) Immunocytochemical analysis of PiT-1 ΔSM VSMCs expressing Vector Control, PiT-1-WT, PiT-1-E74K, PiT-1-S132A, or PiT-1-S623A with primary PiT-1 antibody (red) and DAPI counterstain (blue) show expression of the PiT-1 WT, PiT-1-E74K, PiT-1-S132A, and PiT-1-S623A proteins, scale bar is 25 µm. (C) PiT-2 mRNA quantification by Q-PCR confirmed no significant effects on PiT-2 mRNA expression in any cell line. Data presented as mean ± S.D. (A,C) or representative images (B).