Evidence map›Paper›PMID 31301102›Full record

ArticlePlant biotechnology journal2020

Engineering the interactions between a plant-produced HIV antibody and human Fc receptors.

Szymon Stelter, Mathew J Paul, Audrey Y-H Teh, Melanie Grandits, Friedrich Altmann, Jessica Vanier, Muriel Bardor, Alexandra Castilho, Rachel Louise Allen, Julian K-C Ma

Open access · goldAbstract read
In one paragraph

Article in Plant biotechnology journal, 2020. 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
3.5field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 37 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Recombinant neutralizing secretory IgA antibodies for preventing mucosal acquisition and transmission of SARS-CoV-2.Molecular therapy : the journal of the American Society of Gene Therapy · 2024
    Article
  6. Improving theFrontiers in plant science · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Transient proteolysis reduction ofFrontiers in plant science · 2022
    Article
  13. Production of Recombinant Proteins in Transgenic Tobacco Plants.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  14. Engineering theFrontiers in plant science · 2022
    Article
  15. Review
  16. Article
  17. Glycosylation of Plant-Produced Immunoglobulins.Experientia supplementum (2012) · 2021
    Article
  18. Article
  19. Article
  20. Article
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

10 authors at 4 institutions in 3 countries.

Szymon StelterHotung Molecular Immunology Unit, Institute for Infection and Immunity, St George's University of London, London, UK.
Mathew J PaulHotung Molecular Immunology Unit, Institute for Infection and Immunity, St George's University of London, London, UK.
Audrey Y-H TehHotung Molecular Immunology Unit, Institute for Infection and Immunity, St George's University of London, London, UK.
Melanie GranditsHotung Molecular Immunology Unit, Institute for Infection and Immunity, St George's University of London, London, UK.
Friedrich AltmannDivision of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria.
Jessica VanierUNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA, Normandie Univ, Rouen, France.
Muriel BardorUNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA, Normandie Univ, Rouen, France.
Alexandra CastilhoDepartment of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna, Austria.
Rachel Louise AllenInstitute for Infection and Immunity, St George's University of London, London, UK.
Julian K-C MaHotung Molecular Immunology Unit, Institute for Infection and Immunity, St George's University of London, London, UK.ORCID 0000-0003-0767-0042
St George's, University of London · GBBOKU University · ATInstitut Universitaire de France · FRNormandie Université · FR

Funding

European Research Council 269110Wellcome Trust
6 · The paper itself

Abstract

Plants can provide a cost-effective and scalable technology for production of therapeutic monoclonal antibodies, with the potential for precise engineering of glycosylation. Glycan structures in the antibody Fc region influence binding properties to Fc receptors, which opens opportunities for modulation of antibody effector functions. To test the impact of glycosylation in detail, on binding to human Fc receptors, different glycovariants of VRC01, a broadly neutralizing HIV monoclonal antibody, were generated in Nicotiana benthamiana and characterized. These include glycovariants lacking plant characteristic α1,3-fucose and β1,2-xylose residues and glycans extended with terminal β1,4-galactose. Surface plasmon resonance-based assays were established for kinetic/affinity evaluation of antibody-FcγR interactions, and revealed that antibodies with typical plant glycosylation have a limited capacity to engage FcγRI, FcγRIIa, FcγRIIb and FcγRIIIa; however, the binding characteristics can be restored and even improved with targeted glycoengineering. All plant-made glycovariants had a slightly reduced affinity to the neonatal Fc receptor (FcRn) compared with HEK cell-derived antibody. However, this was independent of plant glycosylation, but related to the oxidation status of two methionine residues in the Fc region. This points towards a need for process optimization to control oxidation levels and improve the quality of plant-produced antibodies.

Indexed as

HIV AntibodiesImmunoglobulin Fc FragmentsProtein EngineeringHIV-1HIV InfectionsHumansNicotianaPolysaccharidesProtein BindingHIV AntibodiesImmunoglobulin Fc FragmentsPolysaccharidesantibodyCD16CD64Fc receptorFcRnfucoseglycoengineeringmethionine oxidationmolecular pharmingneonatal Fc receptorplant

Identifiers

PMID31301102
PMCPMC6953194
OpenAlexW2958634412

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.