NeuroMab™ Anti-SEZ6 Antibody(NRP-0422-P516)

Figure 1 shows the detection of SEZ6 protein expression in NTX tumor cells by flow cytometry using various anti-SEZ6 antibodies.

Axis corresponds to concentration of 3E antibody (Fab) and Y axis corresponds to NGF binding (percentage of maximal UR). Increasing concentrations of Fab E3 blocked the interaction of NGF with p75 and trkA, as indicated by a decrease in signal (measured in UR). When the concentration of E3 antibody (Fab) was equal to that of NGF, no NGF binding was observed (indicated by zero signal).

Figure 2 shows the results of an in vitro disruption assay using anti-SEZ6 ADCs in HEK293 cells overexpressing SEZ6.

Axis corresponds to concentration of 3E antibody (Fab) and Y axis corresponds to NGF binding (percentage of maximal UR). Increasing concentrations of Fab E3 blocked the interaction of NGF with p75 and trkA, as indicated by a decrease in signal (measured in UR). When the concentration of E3 antibody (Fab) was equal to that of NGF, no NGF binding was observed (indicated by zero signal).

Figure 3 shows the effect of anti-SEZ6 ADCs on the growth of SCLC (LU86) and LCNEC (Lu50) tumors in vivo.

Axis corresponds to concentration of 3E antibody (Fab) and Y axis corresponds to NGF binding (percentage of maximal UR). Increasing concentrations of Fab E3 blocked the interaction of NGF with p75 and trkA, as indicated by a decrease in signal (measured in UR). When the concentration of E3 antibody (Fab) was equal to that of NGF, no NGF binding was observed (indicated by zero signal).

Figure 4 shows the ability of conjugated humanized anti-SEZ6 antibodies to delay the growth of four SCLC tumors (LU80, LU64, LU111 and LU117) in vivo and achieve durable remission in immunosuppressed mice.

Axis corresponds to concentration of 3E antibody (Fab) and Y axis corresponds to NGF binding (percentage of maximal UR). Increasing concentrations of Fab E3 blocked the interaction of NGF with p75 and trkA, as indicated by a decrease in signal (measured in UR). When the concentration of E3 antibody (Fab) was equal to that of NGF, no NGF binding was observed (indicated by zero signal).

Figure 5 shows the ability of conjugated humanized anti-SEZ6 antibodies to delay the growth of four SCLC tumors (LU80, LU64, LU111 and LU117) in vivo and achieve durable remission in immunosuppressed mice.

Axis corresponds to concentration of 3E antibody (Fab) and Y axis corresponds to NGF binding (percentage of maximal UR). Increasing concentrations of Fab E3 blocked the interaction of NGF with p75 and trkA, as indicated by a decrease in signal (measured in UR). When the concentration of E3 antibody (Fab) was equal to that of NGF, no NGF binding was observed (indicated by zero signal).