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Tetanus antitoxin potency assessment by surface plasmon resonance and ToBI test
Quintilio, Wagner; Kapronezai, Josana; Takata, Daniela Yumi; Marcelino, José Roberto; Moro, Ana Maria.
Affiliation
  • Quintilio, Wagner; Instituto Butantan. Laboratório Especial de Biofármacos em Células Animais.
  • Kapronezai, Josana; Instituto Butantan. Laboratório de Virologia.
  • Takata, Daniela Yumi; Instituto Butantan. Laboratório Especial de Biofármacos em Células Animais.
  • Marcelino, José Roberto; Instituto Butantan. Seção de Processamento de Plasmas Hiperimunes.
  • Moro, Ana Maria; Instituto Butantan. Laboratório Especial de Biofármacos em Células Animais.
Biologicals ; 62: 107-110, 2019.
Article in English | Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP | ID: but-ib17387
Responsible library: BR78.1
Localization: BR78.1
ABSTRACT
Potency testing of tetanus antitoxin must be performed in vivo, in a very painful, stressful and prone to high variability assay. It is, therefore, mandatory to find alternatives to this kind of potency assessment. Immunochemical tests as ELISA or ToBI test are already available but usually results in a poor correlation to the in vivo protection. Considering research and development of mono and oligoclonal antibodies against tetanus and the improvement of equine polyclonal antitoxin production and control, we developed an alternative instrumental test for tetanus antitoxin by using surface plasmon resonance. Tetanus antitoxin from hyperimmune equine sera (16 batches) were tested and the results indicated excellent concordance and correlation to the in vivo test (Lin's Ró=0.9). This innovative approach should now be improved in order to extend it to oligoclonal and monoclonal human antibodies aiming to replace mice for the potency assessment of tetanus antitoxin especially during research and development steps.
Full text: Available Collection: National databases / Brazil Database: Sec. Est. Saúde SP / SESSP-IBPROD Language: English Journal: Biologicals Year: 2019 Document type: Article
Full text: Available Collection: National databases / Brazil Database: Sec. Est. Saúde SP / SESSP-IBPROD Language: English Journal: Biologicals Year: 2019 Document type: Article
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