Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain

Abstract Today the evaluation of unwanted immunogenicity is a key component in the clinical safety evaluation of new biotherapeutic drugs and macromolecular delivery strategies. However, the evolving structural complexity in contemporary biotherapeutics creates a need for on-going innovation in assa...

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Autores principales: Derrick Johnson, Erica Simmons, Sanofar Abdeen, Adam Kinne, Elijah Parmer, Sherri Rinker, Jennifer Thystrup, Swarna Ramaswamy, Ronald R. Bowsher
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/96c6f914c2334dada702d38fc68654fe
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spelling oai:doaj.org-article:96c6f914c2334dada702d38fc68654fe2021-12-02T18:47:08ZSensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain10.1038/s41598-021-95055-x2045-2322https://doaj.org/article/96c6f914c2334dada702d38fc68654fe2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95055-xhttps://doaj.org/toc/2045-2322Abstract Today the evaluation of unwanted immunogenicity is a key component in the clinical safety evaluation of new biotherapeutic drugs and macromolecular delivery strategies. However, the evolving structural complexity in contemporary biotherapeutics creates a need for on-going innovation in assay designs for reliable detection of anti-drug antibodies, especially for biotherapeutics that may not be well-suited for testing by a bridging assay. We, therefore, initiated systematic optimization of the direct binding assay to adapt it for routine use in regulatory-compliant assays of serum anti-drug antibodies. Accordingly, we first prepared a SULFO-TAG labeled conjugate of recombinant Protein-A/G to create a sensitive electrochemiluminescent secondary detection reagent with broad reactivity to antibodies across many species. Secondly, we evaluated candidate blocker-diluents to identify ones producing the highest signal-to-noise response ratios. Lastly, we introduced use of the ratio of signal responses in biotherapeutic-coated and uncoated wells as a data transformation strategy to identify biological outliers. This alternative data normalization approach improved normality, reduced skewness, and facilitated application of a parametric screening cut point. We believe the optimized direct binding assay design employing SULFO-TAG labeled Protein-A/G represents a useful analytical design for detecting serum ADA to biotherapeutics that lack an immunoglobulin Fc domain.Derrick JohnsonErica SimmonsSanofar AbdeenAdam KinneElijah ParmerSherri RinkerJennifer ThystrupSwarna RamaswamyRonald R. BowsherNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Derrick Johnson
Erica Simmons
Sanofar Abdeen
Adam Kinne
Elijah Parmer
Sherri Rinker
Jennifer Thystrup
Swarna Ramaswamy
Ronald R. Bowsher
Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
description Abstract Today the evaluation of unwanted immunogenicity is a key component in the clinical safety evaluation of new biotherapeutic drugs and macromolecular delivery strategies. However, the evolving structural complexity in contemporary biotherapeutics creates a need for on-going innovation in assay designs for reliable detection of anti-drug antibodies, especially for biotherapeutics that may not be well-suited for testing by a bridging assay. We, therefore, initiated systematic optimization of the direct binding assay to adapt it for routine use in regulatory-compliant assays of serum anti-drug antibodies. Accordingly, we first prepared a SULFO-TAG labeled conjugate of recombinant Protein-A/G to create a sensitive electrochemiluminescent secondary detection reagent with broad reactivity to antibodies across many species. Secondly, we evaluated candidate blocker-diluents to identify ones producing the highest signal-to-noise response ratios. Lastly, we introduced use of the ratio of signal responses in biotherapeutic-coated and uncoated wells as a data transformation strategy to identify biological outliers. This alternative data normalization approach improved normality, reduced skewness, and facilitated application of a parametric screening cut point. We believe the optimized direct binding assay design employing SULFO-TAG labeled Protein-A/G represents a useful analytical design for detecting serum ADA to biotherapeutics that lack an immunoglobulin Fc domain.
format article
author Derrick Johnson
Erica Simmons
Sanofar Abdeen
Adam Kinne
Elijah Parmer
Sherri Rinker
Jennifer Thystrup
Swarna Ramaswamy
Ronald R. Bowsher
author_facet Derrick Johnson
Erica Simmons
Sanofar Abdeen
Adam Kinne
Elijah Parmer
Sherri Rinker
Jennifer Thystrup
Swarna Ramaswamy
Ronald R. Bowsher
author_sort Derrick Johnson
title Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
title_short Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
title_full Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
title_fullStr Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
title_full_unstemmed Sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin Fc domain
title_sort sensitive assay design for detection of anti-drug antibodies to biotherapeutics that lack an immunoglobulin fc domain
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/96c6f914c2334dada702d38fc68654fe
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