1999 年 22 巻 7 号 p. 738-740
We investigated the mechanism of adhesion of highly malignant ascites hepatoma AH66F cells to mesothelial cells. The adhesion rate of AH66F cells to mesentery-derived mesothelial cells (M-cells) was about 46% at 37°C, but it decreased to about 27% at 4°C. The adhesion rate of AH66F cells was about 25% in the presence of leukocyte function-associated antigen 1 (LFA-1) mAb at both 4°C and 37°C. When M-cells were treated with hyaluronidase, the AH66F/M-cell adhesion was decreased to half at 37°C and had nearly disappeared at 4°C. The residual adhesion of AH66F cells to M-cells treated with hyaluronidase almost disappeared in the presence of LFA-1 mAb. AH66F cells strongly adhered to a hyaluronate (HA)-coated plate, but not to a bovine serum albumin-coated plate. AF66F cells expressed a CD44 molecule (a HA receptor) in the plasma membrane, with a molecular size of about 85 to 90 kDa, corresponding to the CD44H isoform.These results indicated that the adhesion of AH66F cells to mesothelial cells is composed of pathways of CD44/HA and LFA-1/ICAM-1.
