CCN1 and cancer: Compared with 10 μg·mL−1 IgG, the addition of 5 μg·mL−1 anti‐Cyr61 antibody to HCT8 and DLD1 cells reduced the number of invasive cancer cells by 36% and 27%, respectively, and the addition of 10 μg·mL−1 anti‐Cyr61 antibody reduced the cell number by 69% and 54%, respectively (Fig. 2A).