Antibody-Targeting
Provides High Selectivity for Target Cells.
Relative cell viability after 72 h of incubation with or without 10
nM LFN-DTA, and with 10-fold serial dilutions of an IgG
or IgG-mPAC conjugate: (A) HER2-positive cells (BT474) with Tmab,
Tmab-mPAC, Tmab + mPAC, Tmab-mPACA, or Tmab-LFN-DTA; (B)
EGFR-positive cells (A431) with Cmab, Cmab-mPAC, Cmab + mPAC, or Cmab-mPACA;
(C) HER2-positive cells (BT474) and HER2-negative cells (BT549) with
Tmab-mPAC; (D) EGFR-positive cells (A431) and EGFR-negative cells
(Jurkat) with Cmab-mPAC. mPACA represents the mPAC [F427A] variant,
which is translocation-deficient. Cell viability was determined by
the relative luminescence from a CellTiter-Glo assay, which was normalized
to untreated cells. Data represent the mean of three replicate wells
± the standard deviation (±s.d.).