Table 1.

Effect of bNAbs on cell-free and cell to cell HIV-1 transmission

bNAbs IC50 
 NL4.3 NLAD8 
 Cell free Cell associated Cell free Cell associated 
NIH45-46 0.06 1.2 0.2 2.5 
3BNC60 0.05 0.9 0.1 2.3 
VRC01 0.2 7.2a 0.3 12.1a 
1NC9 0.2 4.5a 0.7 12.3a 
12A12 9.4a 2.6 
8ANC195 4.0a 5.7a 
10-1074 0.1 1.6 
PGT121 0.1 1.3 
10-1074GM 0.3 6.2 
10-996 0.1 1.7 
10-1369 0.4 10a 
PG16 0.7a >15 0.05 0.5a 
3BC176 0.7a >15 
10E8 0.1 6.7a 1.1 >15 
4E10 4.3a >15 >15 
bNAbs IC50 
 NL4.3 NLAD8 
 Cell free Cell associated Cell free Cell associated 
NIH45-46 0.06 1.2 0.2 2.5 
3BNC60 0.05 0.9 0.1 2.3 
VRC01 0.2 7.2a 0.3 12.1a 
1NC9 0.2 4.5a 0.7 12.3a 
12A12 9.4a 2.6 
8ANC195 4.0a 5.7a 
10-1074 0.1 1.6 
PGT121 0.1 1.3 
10-1074GM 0.3 6.2 
10-996 0.1 1.7 
10-1369 0.4 10a 
PG16 0.7a >15 0.05 0.5a 
3BC176 0.7a >15 
10E8 0.1 6.7a 1.1 >15 
4E10 4.3a >15 >15 

The indicated antibodies were tested against cell-free and cell-associated HIV-1 infection as indicated in Fig. 1. Median inhibitory concentrations (IC50) were calculated from at least four independent experiments. The corresponding inhibition curves are displayed Fig. S1. Bold indicates IC50 < 0.5 µg/ml; italics indicate IC50 = 0.5–2 µg/ml; single underline indicates IC50 = 2–10 µg/ml; bold and underline indicate IC50 = 10–15 µg/ml. X, no neutralization (<25% inhibition at 15 µg/ml).

a

Partial neutralization (<90% inhibition at 15 µg/ml).

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