Trial reportThe Journal of biological chemistry2012
Constitutive production of catalytic antibodies to a Staphylococcus aureus virulence factor and effect of infection.
Trial report in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Immunoglobulins with Non-Canonical Functions in Inflammatory and Autoimmune Disease States.International journal of molecular sciences · 2020Pooled it
- Physiological IgM class catalytic antibodies selective for transthyretin amyloid.The Journal of biological chemistry · 2014Trial
- Enzymatization of mouse monoclonal antibodies to the corresponding catalytic antibodies.Scientific reports · 2024Article
- Antibodies to coagulase ofFrontiers in immunology · 2023Article
- Direct conversion of a general antibody to its catalytic antibody and corresponding applications -Importance and role of Pro95 in CDR-3.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2023Review
- Obtaining Highly Active Catalytic Antibodies Capable of Enzymatically Cleaving Antigens.International journal of molecular sciences · 2022Article
- A new catalytic site functioning in antigen cleavage by H34 catalytic antibody light chain.Scientific reports · 2022Article
- Finding and characterizing a catalytic antibody light chain, H34, capable of degrading the PD-1 molecule.RSC chemical biology · 2021Article
- Antibody-Mediated Catalysis in Infection and Immunity.Infection and immunity · 2017Review
- Identification and Characterization of the Trypanosoma cruzi B-cell Superantigen Tc24.The American journal of tropical medicine and hygiene · 2016Article
- Constant domain-regulated antibody catalysis.The Journal of biological chemistry · 2012Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
Abstract
Antibodies that recognize microbial B lymphocyte superantigenic epitopes are produced constitutively with no requirement for adaptive immune maturation. We report cleavage of the Staphylococcus aureus virulence factor extracellular fibrinogen-binding protein (Efb) by catalytic antibodies produced with no exposure to the bacterium and reduction of the catalytic antibody activity following infection. IgG catalytic antibodies that specifically hydrolyzed Efb via a nucleophilic catalytic mechanism were found in the blood of healthy humans and aseptic mice free of S. aureus infection. IgG hydrolyzed peptide bonds on the C-terminal side of basic amino acids, including a bond located within the C3b-binding domain of Efb. Efb digested with the IgG lost its ability to bind C3b and inhibit complement-dependent antibody-mediated red blood cell lysis. In addition to catalysis, the IgG expressed saturable Efb binding activity. IgG from S. aureus-infected mice displayed reduced Efb cleaving activity and increased Efb binding activity compared with uninfected controls, suggesting differing effects of the infection on the antibody subsets responsible for the two activities. IgG from children hospitalized for S. aureus infection also displayed reduced Efb cleavage compared with healthy children. These data suggest a potential defense function for constitutively produced catalytic antibodies to a putative superantigenic site of Efb, but an adaptive catalytic response appears to be proscribed.
Indexed as
Identifiers
What Socratic holds
Registered trials
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 Socratic graph.