Table 2A. Anti-CD19 antibodies do not inhibit engraftment of MCL tumor cells in NOD/SCID mice.
MCL patient cells were incubated with anti-CD19 antibodies, isotype controls and F(ab′)2 fragments of anti-CD19 antibodies before transplantation into NOD/SCID mice by intraperitoneal injection. F(ab′)2 fragments of anti-CD19 antibodies were generated by enzymatic digestion using ficin (Pierce) and then purified using a protein A column to remove Fc portions. MCL-like tumors formed at equal frequency in all mice.
Cells injected | Cell dose | # of mice tested | Total # of mice have tumors |
---|---|---|---|
MCL tumor cells (pt1, pt3, pt8) + anti-CD19 antibodies | 5×106 | 5 | 5/5 (100%) |
MCL tumor cells (pt1, pt3, pt8) + IgG antibodies | 5×106 | 3 | 3/3 (100%) |
MCL tumor cells (pt1, pt3, pt8) + (Fab)2 fragments of CD19 | 5×106 | 4 | 4/4 (100%) |