CLDN3 and colonic neoplasm: By this, Capan-1, PA-TU-8902, AsPc-1 and the positive control human colon cancer HT-29 control cells showed high Cldn3/4 mRNA levels, whereas moderate levels of Cldn3/4 were detected in MIA PaCa-2 and HUP-T3 cells (Figure 1A).