Rapid and sensitive anthrone–sulfuric acid assay in microplate format to quantify carbohydrate in biopharmaceutical products: Method development and validation

A Leyva, A Quintana, M Sánchez, EN Rodríguez… - Biologicals, 2008 - Elsevier
The need for an accurate, fast and reliable analysis of carbohydrate test is crucial for
numerous biological processes. In that sense, anthrone–sulfuric acid assay is one of the …

Immunoaffinity purification of recombinant hepatitis B surface antigen from yeast using a monoclonal antibody

A Agraz, CA Duarte, L Costa, L Pérez, R Páez… - … of Chromatography A, 1994 - Elsevier
A murine monoclonal antibody developed for the purification of recombinant hepatitis B
surface antigen was immobilized on a chromatographic support and used to adsorb and …

Expanded bed adsorption processing of mammalian cell culture fluid: comparison with packed bed affinity chromatography

Y González, N Ibarra, H Gómez, M González… - … of Chromatography B, 2003 - Elsevier
A comparison between expanded bed adsorption and conventional packed bed Protein A
Fast Flow to purify the anti-rHBsAg mAbs from feedstock is presented in this work. Direct …

Comparison of different elution conditions for the immunopurification of recombinant hepatitis B surface antigen

N Ibarra, A Caballero, E González, R Valdés - Journal of Chromatography B …, 1999 - Elsevier
An immunoaffinity chromatographic method was developed using a mAb immunosorbent to
purify recombinant hepatitis B surface antigen (r-HBsAg) from yeast. Elution conditions using …

Chromatographic removal combined with heat, acid and chaotropic inactivation of four model viruses

R Valdés, N Ibarra, I Ruibal, A Beldarraın, E Noa… - Journal of …, 2002 - Elsevier
The virus removal of protein A affinity chromatography, inactivation capacity, acid pH and a
combination of high temperature with a chaotropic agent was determined in this work. The …

A rapid and sensitive ELISA to quantify an HBsAg specific monoclonal antibody and a plant-derived antibody during their downstream purification process

A Leyva, A Franco, T González, JC Sánchez, I López… - Biologicals, 2007 - Elsevier
An enzyme-linked immunosorbent assay to quantify the mAb CB. Hep-1 during downstream
purification process was standardized and validated. This assay is characterized by a short …

Adsorption–desorption of recombinant hepatitis B surface antigen (r‐HBsAg) from P. pastoris on a diatomaceous earth matrix: Optimization of parameters for …

A Agraz, Y Quiñones, N Expósito… - Biotechnology and …, 1993 - Wiley Online Library
Recombinant hepatitis B surface antigen (r‐HBsAg) produced in yeast is adsorbed on a
diatomaceous earth matrix for purification purposes. A pH dependence in the adsorption …

CB. Hep-1 hybridoma growth and antibody production using protein-free medium in a hollow fiber bioreactor

R Valdés, N Ibarra, M González, T Alvarez, J García… - Cytotechnology, 2001 - Springer
The protein-free medium TurboDoma HP. 1 (THP. 1) was used to produce the CB. Hep-1
monoclonal antibody (mAb) in a CP-1000 hollow fiber bioreactor (HFB). This mAb is used for …

Four-state equilibrium unfolding of an scFv antibody fragment

I Pedroso, MP Irún, C Machicado, J Sancho - Biochemistry, 2002 - ACS Publications
The conformational stability of a single-chain Fv antibody fragment against a hepatitis B
surface antigen (anti-HBsAg scFv) has been studied by urea and temperature denaturation …

Antigen recognition characteristics and comparative performance in immunoaffinity purification of two monoclonal antibodies specific for the hepatitis B virus surface …

MEF de Cossı́o, T Dı́az, A Galván, R Valdéz… - Journal of …, 1997 - Elsevier
In this paper we describe the antigen recognition characteristics, variable region base and
amino acid sequence, and performance as immunoaffinity chromatography ligands of two …