A new process of IgG purification by negative chromatography: adsorption aspects of human serum proteins onto omega-aminodecyl-agarose.
J Chromatogr B Analyt Technol Biomed Life Sci
; 878(23): 2087-93, 2010 Aug 01.
Article
em En
| MEDLINE
| ID: mdl-20598951
The adsorbent omega-aminodecyl-agarose was evaluated as to its feasibility for the adsorption of human serum and plasma proteins, aiming at the purification of immunoglobulin G (IgG). The contribution of electrostatic and hydrophobic interactions (mixed-mode) and the effects of buffer system on the adsorption of serum proteins were also studied. The adsorption isotherm parameters of human serum albumin (HSA) and IgG were evaluated, pointing to the existence of cooperative effects in the process. A positive (n=2.30+/-0.38) and negative cooperativity (n=0.63+/-0.12) were observed for IgG and HSA binding, respectively. High purity IgG was obtained (based on total protein concentration and nephelometric analysis of HSA, transferrin, and immunoglobulins A, G, and M) with a 75% recovery in Hepes 25 mmol L(-1) pH 6.8 feeding human serum. These results indicate that the use of omega-aminodecyl-agarose is a potential technique for purification of IgG from human serum.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sefarose
/
Imunoglobulina G
/
Proteínas Sanguíneas
/
Cromatografia
Limite:
Humans
Idioma:
En
Revista:
J Chromatogr B Analyt Technol Biomed Life Sci
Assunto da revista:
ENGENHARIA BIOMEDICA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Holanda