Surfactant-free poly(styrene-co-glycidyl methacrylate) particles with surface-bound antibodies for activation and proliferation of human T cells.
Bioconjug Chem
; 21(5): 867-74, 2010 May 19.
Article
em En
| MEDLINE
| ID: mdl-20426436
In this article, we present our results on the design of new polymeric carriers for antibodies. Polymer colloids based on poly(styrene-co-glycidyl methacrylate) were synthesized by surfactant-free emulsion polymerization. Obtained polymer particles stabilized by grafted poly(ethylene glycol) (PEG) chains and carrying active epoxy groups were used for the covalent immobilization of activating antibodies against the human surface proteins CD (cluster of differentiation) 3 and CD28. The particle-antibody conjugates were employed for the stimulation of human CD4 memory T cells. This was analyzed by the up-regulation of the activation markers CD69 and CD25 on T cells and T cell proliferation as assessed by the dilution of a fluorescent dye on dividing daughter T cells. The particle-antibody conjugates were able to stimulate T cells at least as efficiently as conventional methods, e.g., surface-immobilized antibodies. Furthermore, an increase of the PEG chain length of the particles decreased the efficiency of the particle-antibody conjugates to activate T cells.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Polimetacrílicos
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Ativação Linfocitária
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Linfócitos T
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Anticorpos Imobilizados
Limite:
Humans
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article