Evidence map›Paper›PMID 21856306›Full record

ArticleJournal of immunological methods2011

Comparison of the efficiency of antibody selection from semi-synthetic scFv and non-immune Fab phage display libraries against protein targets for rapid development of diagnostic immunoassays.

Conrad E Z Chan, Annie H Y Chan, Angeline P C Lim, Brendon J Hanson

Abstract readComparative Study
In one paragraph

Article in Journal of immunological methods, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed.

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  18. In vitro Fab display: a cell-free system for IgG discovery.Protein engineering, design & selection : PEDS · 2014
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Conrad E Z ChanBiodefence Therapeutics Laboratory, Defence Medical and Environmental Research Institute, DSO National Laboratories, 27 Medical Drive, #13-00, S(117510), Singapore.
Annie H Y Chan
Angeline P C Lim
Brendon J Hanson

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Rapid development of diagnostic immunoassays against novel emerging or genetically modified pathogens in an emergency situation is dependent on the timely isolation of specific antibodies. Non-immune antibody phage display libraries are an efficient in vitro method for selecting monoclonal antibodies and hence ideal in these circumstances. Such libraries can be constructed from a variety of sources e.g. B cell cDNA or synthetically generated, and use a variety of antibody formats, typically scFv or Fab. However, antibody source and format can impact on the quality of antibodies generated and hence the effectiveness of this methodology for the timely production of antibodies. We have carried out a comparative screening of two antibody libraries, a semi-synthetic scFv library and a human-derived Fab library against the protective antigen toxin component of Bacillus anthracis and the epsilon toxin of Clostridium botulinum. We have shown that while the synthetic library produced a diverse collection of specific scFv-phage, these contained a high frequency of unnatural amber stops and glycosylation sites which limited their conversion to IgG, and also a high number which lost specificity when expressed as IgG. In contrast, these limitations were overcome by the use of a natural human library. Antibodies from both libraries could be used to develop sandwich ELISA assays with similar sensitivity. However, the ease and speed with which full-length IgG could be generated from the human-derived Fab library makes screening this type of library the preferable method for rapid antibody generation for diagnostic assay development.

Indexed as

Peptide LibraryAntibodiesAntibody AffinityAntigens, BacterialBacterial ToxinsBotulinum ToxinsEnzyme-Linked Immunosorbent AssayHumansImmunoglobulin Fab FragmentsProteinsReproducibility of ResultsSingle-Chain Antibodiesanthrax toxinAntibodiesAntigens, BacterialBacterial ToxinsBotulinum ToxinsImmunoglobulin Fab FragmentsPeptide LibraryProteinsSingle-Chain Antibodies

Identifiers

PMID21856306
PMCPMC7094349

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.