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Quantification of immobilized protein in pharmaceutical production by bio-assisted potentiometric multisensor system.
Voitechovic, Edita; Korepanov, Anton; Kirsanov, Dmitry; Legin, Andrey.
Afiliação
  • Voitechovic E; St. Petersburg State University, St. Petersburg, Russia; Institute of Microelectronics of Barcelona, Barcelona, Spain. Electronic address: voitechovic.edita@gmail.com.
  • Korepanov A; Protein Contour LLC, St. Petersburg, Russia.
  • Kirsanov D; St. Petersburg State University, St. Petersburg, Russia; Laboratory of Artificial Sensory Systems, ITMO University, St. Petersburg, Russia. Electronic address: d.kirsanov@gmail.com.
  • Legin A; St. Petersburg State University, St. Petersburg, Russia; Laboratory of Artificial Sensory Systems, ITMO University, St. Petersburg, Russia.
J Pharm Biomed Anal ; 150: 67-71, 2018 Feb 20.
Article em En | MEDLINE | ID: mdl-29216587
Quantification of proteins is a key biochemical assay in molecular biology, biotechnology, medicine and pharmacology. Protein quantification protocols can be based on spectrophotometry, enzyme-linked immunosorbent assay, mass spectrometry or quantitative immunoblotting depending on analyte. In case of immobilized protein these methods require suitable sample preparation. Thus, sophisticated analysis becomes even more complex, expensive and time-consuming. Such drawbacks are highly undesirable in industry. In this study we propose a new approach for evaluation of immobilized protein concentration based on application of bio-assisted potentiometric multisensor system. Surface-immobilized recombinant protein A from Staphylococcus aureus (SpA, expressed in Escherichia coli), which is commonly used as affinity ligand immobilized to stationary phase (сhromatography media) for monoclonal antibody purification was employed as the model object. Chromatography media samples containing different amounts of immobilized SpA were analyzed. Proteinase K from Tritirachium album was employed as a bio-transducer. We demonstrated that the suggested approach provides information about immobilized SpA concentration with 0.8mg/ml accuracy in the range 1-6.7mg/ml and within just 16min. Moreover, the proposed procedure requires no expensive materials and equipment and no bio-transducer immobilization. This method has potential of application for fast monitoring of other immobilized proteins in different tasks.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Potenciometria / Proteína Estafilocócica A / Ensaio de Imunoadsorção Enzimática / Proteínas Imobilizadas Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Potenciometria / Proteína Estafilocócica A / Ensaio de Imunoadsorção Enzimática / Proteínas Imobilizadas Idioma: En Ano de publicação: 2018 Tipo de documento: Article