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. 2015 Dec 10;10:7371–7384. doi: 10.2147/IJN.S90866

Table 2.

Particle size, PDI, and ZP, and antibody loading for anti-CD205 modified NPs (n=4)

Formulation Method 1
Method 2
Size ± SD (nm) PDI ± SD ZP ± SD (mV) Ab loading (µg/mg of NP) Size ± SD (nm) PDI ± SD ZP ± SD (mV) Ab loading (µg/mg of NP)
Adsorption
 0.18C-NP 336±19 0.28±0.04 −12.9±0.6 3.62±0.43 556±41 0.29±0.04 −1.9±0.3 2.73±0.17
 0.18C-NP+S 567±36 0.47±0.06 −2.5±0.2 2.64±0.21 311±15 0.32±0.04 −2.9±0.2 2.11±0.67
 0.55C-NP 978±424 0.69±0.12 −9.1±0.6 2.42±0.86 1,266±193 0.63±0.04 −3.4±0.2 2.62±0.67
 0.55C-NP+S 733±52 0.58±0.26 −1.2±0.1 1.90±0.31 399±143 0.31±0.07 −0.4±0.1 2.44±0.27
 0.15E-NP 5,270±965 0.79±0.25 0.3±0.3 1.91±0.09 3,681±453 0.75±0.01 0.1±0.1 2.41±0.30
 0.15E-NP+S 468±14 0.69±0.02 −2.3±0.7 3.45±0.38 417±51 0.43±0.05 0.2±0.1 3.18±0.48
 0.55E-NP 5,507±927 1.00±0.00 −1.9±0.2 2.82±0.83 1,999±404 0.95±0.05 −0.4±0.3 2.54±0.33
 0.55E-NP+S 1,946±41 0.97±0.04 0.7±0.4 2.94±0.46 544±45 0.39±0.07 −1.9±0.2 2.31±0.57
Covalent
 0.18C-NP 426±6 0.41±0.02 −2.5±0.7 2.51±0.22 349±24 0.34±0.04 −9.4±0.4 2.70±0.61
 0.18C-NP+S 774±8 0.57±0.01 2.6±0.1 2.25±0.01 421±12 0.37±0.05 2.1±0.4 2.16±0.43
 0.55C-NP 1,033±20 0.73±0.07 −1.6±0.5 3.53±0.47 346±15 0.41±0.02 −2.6±0.3 2.13±1.02
 0.55C-NP+S 828±10 0.66±0.03 −2.2±0.1 3.22±0.08 461±10 0.27±0.09 1.7±0.5 2.31±0.63
 0.15E-NP NA NA NA NA 305±156 0.65±0.08 −1.1±0.2 1.96±0.16
 0.15E-NP+S NA NA NA NA 309±36 0.22±0.07 1.5±0.1 2.79±0.24
 0.55E-NP NA NA NA NA 327±22 0.38±0.05 −4.1±0.2 2.62±0.35
 0.55E-NP+S NA NA NA NA 314±31 0.32±0.02 2.2±0.5 2.71±0.32

Notes: C = COOH ended PLGA; E = ester ended PLGA; S = sucrose (10%). Data are presented as mean ± standard deviation.

Abbreviations: NP, nanoparticle; PDI, polydispersity index; ZP, zeta potential; SD, standard deviation; NA, not applicable; Ab, anti-CD205 antibody; COOH, carboxylic acid; PLGA, poly(d, l-lactide co-glycolide).