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Table 1 Aggregation assessment of trimeric Env or HIV-1 BaL virions incubated with antibody

From: Aggregate complexes of HIV-1 induced by multimeric antibodies

Assessment of IgG antibodies for aggregation of gp140 and HIV-1

Antibody

Epitope (residues)

Trimeric CN54 gp140

Neutralization

Purified HIV-1 BaL

gp140 Agg.1

Conc. range2

Ab Conc.

Ab:Env ratio

PDI3

IC50

Virus Agg.1

Δ Virus size4(nm)

PDI3

HIV-Ig

Polyclonal

++

50-1

50

17:1

0.67

10.6

-

19.3

0.41

1B7

gp41 (ND)

++

50-10

10

3.4:1

0.56

>50

-

5.4

0.23

5F3

gp41 cluster V

++

50-2

5

1.7:1

0.53

>50

-

12.5

0.30

24G3

gp41 (526-543)

++

50-5

5

1.7:1

0.49

>50

-

10.6

0.26

3H12

gp41 (ND5)

++

50-.5

2

1:1.5

0.45

>50

-

4.0

0.33

b12

gp120 CD4bs

++

50-2

5

1.7:1

0.54

0.75

-

12.7

0.34

G8

gp120 (dis)

++

5-2

5

1.7:1

0.51

>50

-

-6.4

0.21

1F7

gp120 V3

++

50-1

5

1.7:1

0.48

1.24

-

6.3

0.32

25C2

gp41 CD4i (526-543)

+

50-5

10

3.4:1

0.35

>50

-

-1.6

0.34

1H5

gp41 (579-613)

+

50-2

2

1:1.5

0.32

>50

-

1.0

0.23

4B3

gp41 (579-613)

+

50-5

5

1.7:1

0.31

>50

-

-4.3

0.28

1B1

gp120 (CD4bs dis)

+

50-10

10

3.4:1

0.37

>50

-

7.4

0.27

3D5

gp120 (ND)

+

50-5

5

1.7:1

0.34

>50

-

-12.4

0.21

2G6

gp120 (CD4bs dis)

+

10-5

10

3.4:1

0.32

>50

-

1.4

0.26

3B7

gp120 (non-V3)

+

50-5

10

3.4:1

0.28

>50

-

12.6

0.31

4D4

gp41 (579-613)

-

10

10

3.4:1

0.30

>50

-

16.2

0.28

1F11

gp41 (579-613)

+

10

10

3.4:1

0.27

>50

-

2.2

0.40

3D6

gp41 (604-617)

±

50-5

5

1.7:1

0.23

>50

-

9.8

0.27

2G12

gp120 (C2-C3-V4 glycan)

±

50-10

10

3.4:1

0.19

1.89

-

13.7

0.26

7B2

gp41 cluster I

±

50

50

17:1

0.27

9.65

-

11.0

0.38

2F5

gp41 MPER (662-667)

-

N/A

N/A

N/A

0.21

2.73

-

14.6

0.37

4E10

gp41 MPER (824-830)

-

N/A

N/A

N/A

0.20

>50

-

-1.5

0.22

  1. The average size of the preparations was measured by dynamic light scattering. Data is the average of three experiments, each measured in triplicate. For CN54gp140, Ab concentration, Ab:Env ratio and PDI are reported for optimal aggregate formation conditions. For HIV-1 BaL, Δ Virus size and PDI are reported for 10 μgml-1. All concentrations are in μgml-1.
  2. 1Aggregate formation was scored by the maximum size measured: ++ for particles > 100 nm; + for 40 ≤ 100 nm; ± for 20 < 40 nm, - for ≤ 20 nm.
  3. 2Concentration range where the gp140-Ab complexes scored positive for aggregation.
  4. 3Relative heterogeneity of preparations is evaluated by polydispersity index (PDI).
  5. 4Change from purified virus particle size of 150.2 nm.
  6. 5ND: not determined.