Evidence map›Paper›PMID 26381852›Full record

ArticlemAbs2015

Development of human-like scFv-Fc antibodies neutralizing Botulinum toxin serotype B.

Christine Rasetti-Escargueil, Arnaud Avril, Siham Chahboun, Rob Tierney, Nicola Bak, Sebastian Miethe, Christelle Mazuet, Michel R Popoff, Philippe Thullier, Michael Hust and 2 more

Open access · goldAbstract read
In one paragraph

Article in mAbs, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.1field-weighted citation impact, top 9% of its field
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

17 citing papers in PubMed, 28 citations in OpenAlex.

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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

12 authors at 5 institutions in 3 countries.

Christine Rasetti-Escargueila Division of Bacteriology; National Institute for Biological Standards and Control (NIBSC), a centre of Medicines and Healthcare products Regulatory Agency ; Hertfordshire UK.
Arnaud Avrilb Département des Maladies Infectieuses ; Unité Interaction Hôte-Pathogène; Institut de Recherche Biomédicale des Armées (IRBA) ; Brétigny-sur-Orge , France.
Siham Chahbounb Département des Maladies Infectieuses ; Unité Interaction Hôte-Pathogène; Institut de Recherche Biomédicale des Armées (IRBA) ; Brétigny-sur-Orge , France.
Rob Tierneya Division of Bacteriology; National Institute for Biological Standards and Control (NIBSC), a centre of Medicines and Healthcare products Regulatory Agency ; Hertfordshire UK.
Nicola Baka Division of Bacteriology; National Institute for Biological Standards and Control (NIBSC), a centre of Medicines and Healthcare products Regulatory Agency ; Hertfordshire UK.
Sebastian Miethec Institut für Biochemie, Biotechnologie und Bioinformatik; Technische Universität Braunschweig ; Braunschweig , Germany.
Christelle Mazuetd Unité des Bactéries anaérobies et Toxines; Institut Pasteur ; Paris , France.
Michel R Popoffd Unité des Bactéries anaérobies et Toxines; Institut Pasteur ; Paris , France.
Philippe Thullierb Département des Maladies Infectieuses ; Unité Interaction Hôte-Pathogène; Institut de Recherche Biomédicale des Armées (IRBA) ; Brétigny-sur-Orge , France.
Michael Hustc Institut für Biochemie, Biotechnologie und Bioinformatik; Technische Universität Braunschweig ; Braunschweig , Germany.
Thibaut Pelatb Département des Maladies Infectieuses ; Unité Interaction Hôte-Pathogène; Institut de Recherche Biomédicale des Armées (IRBA) ; Brétigny-sur-Orge , France.
Dorothea Sesardica Division of Bacteriology; National Institute for Biological Standards and Control (NIBSC), a centre of Medicines and Healthcare products Regulatory Agency ; Hertfordshire UK.
University of Hertfordshire · GBCentre d'Immunologie et des Maladies Infectieuses · FRInstitut Pasteur · FRInteraction Hôtes Agents Pathogènes · FRTechnische Universität Braunschweig · DE

Funding

National Centre for the Replacement, Refinement and Reduction of Animals in Research G1000086/1
6 · The paper itself

Abstract

Botulinum neurotoxins (BoNTs) are responsible for human botulism, a life-threatening disease characterized by flaccid muscle paralysis that occurs naturally by food poisoning or colonization of the gastrointestinal tract by BoNT-producing clostridia. BoNTs have been classified as category A agents by the Centers for Disease Control and Prevention. To date, 7 subtypes of BoNT/B were identified showing that subtypes B1 (16 strains) and B2 (32 strains) constitute the vast majority of BoNT/B strains. Neutralizing antibodies are required for the development of anti-botulism drugs to deal with the potential risk. In this study, macaques (Macaca fascicularis) were immunized with recombinant light chain (LC) or heavy chain (HC) of BoNT/B2, followed by the construction of 2 hyper-immune phage display libraries. The best single-chain variable fragments (scFvs) isolated from each library were selected according to their affinities and cross reactivity with BoNT/B1 toxin subtype. These scFvs against LC and HC were further analyzed by assessing the inhibition of in vitro endopeptidase activity of BoNT/B1 and B2 and neutralization of BoNT/B1 and B2 toxin-induced paralysis in the mouse ex vivo phrenic nerve assay. The antibodies B2-7 (against HC) and BLC3 (against LC) were produced as scFv-Fc, and, when tested individually, neutralized BoNT/B1 and BoNT/B2 in a mouse ex vivo phrenic nerve assay. Whereas only scFv-Fc BLC3 alone protected mice against BoNT/B2-induced paralysis in vivo, when B2-7 and BLC3 were combined they exhibited potent synergistic protection. The present study provided an opportunity to assess the extent of antibody-mediated neutralization of BoNT/B1 and BoNT/B2 subtypes in ex vivo and in vitro assays, and to confirm the benefit of the synergistic effect of antibodies targeting the 2 distinct functional domains of the toxin in vivo. Notably, the framework regions of the most promising antibodies (B2-7 and BLC3) are close to the human germline sequences, which suggest that they may be well tolerated in potential clinical development.

Indexed as

AnimalsAntibodies, NeutralizingAntibody AffinityAntibody SpecificityBotulinum Toxins, Type ABotulismClostridiumCross ReactionsHumansImmunizationMacaca fascicularisMiceMonkey DiseasesParalysisPeptide LibraryPhrenic NerveAntibodies, NeutralizingBotulinum Toxins, Type APeptide LibraryrimabotulinumtoxinBSingle-Chain Antibodiesbotulinum neurotoxins, BoNT/B, VAMP2, in vitro endopeptidase, ex vivo mouse phrenic nerve-hemidiaphragm, neutralization assays, scFv-Fc, mouse paralysis, synergistic protection macaque

Identifiers

PMID26381852
PMCPMC4966489
OpenAlexW1929047806

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.