Evidence map›Paper›PMID 27108698›Full record

ArticleImmunology and cell biology2016

Discovery of functionally selective C5aR2 ligands: novel modulators of C5a signalling.

Daniel E Croker, Peter N Monk, Reena Halai, Geraldine Kaeslin, Zoe Schofield, Mike Cl Wu, Richard J Clark, Mark At Blaskovich, Dimitrios Morikis, Christodoulos A Floudas and 2 more

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In one paragraph

Article in Immunology and cell biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

39 citing papers in PubMed, 80 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. A CD4Immunity · 2025
    Article
  8. Cell-intrinsic C5a synergizes with Dectin-1 in macrophages to mediate fungal killing.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Structural biology of complement receptors.Frontiers in immunology · 2023
    Review
  14. Article
  15. Article
  16. Article
  17. Complement C3b contributes toFrontiers in immunology · 2022
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 3 countries.

Daniel E CrokerSchool of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia.
Peter N MonkDepartment of Infection, Immunity and Cardiovascular Disease, Sheffield University Medical School, Sheffield, UK.
Reena HalaiInstitute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
Geraldine KaeslinInstitute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
Zoe SchofieldInstitute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
Mike Cl WuSchool of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia.
Richard J ClarkSchool of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia.
Mark At BlaskovichInstitute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
Dimitrios MorikisDepartment of Bioengineering, University of California, Riverside, CA, USA.
Christodoulos A FloudasArtie McFerrin Department of Chemical Engineering and Texas A&M Energy Institute, Texas A&M University, College Station, TX, USA.
Matthew A CooperInstitute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia.
Trent M WoodruffSchool of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia.
University of Queensland · AUTexas A&M University · USUniversity of California, Riverside · USUniversity of Sheffield · GB

Funding

Computer Aided Design of Complement TherapeuticsR24GM069736 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI LAMBRIS, JOHN D · 2004 to 2007
$1.8M
British Heart Foundation PG/09/018/25279NIGMS NIH HHS R24 GM069736
6 · The paper itself

Abstract

The complement cascade is comprised of a highly sophisticated network of innate immune proteins that are activated in response to invading pathogens or tissue injury. The complement activation peptide, C5a, binds two seven transmembrane receptors, namely the C5a receptor 1 (C5aR1) and C5a receptor 2 (C5aR2, or C5L2). C5aR2 is a non-G-protein-signalling receptor whose biological role remains controversial. Some of this controversy arises owing to the lack of selective ligands for C5aR2. In this study, a library of 61 peptides based on the C-terminus of C5a was assayed for the ability to selectively modulate C5aR2 function. Two ligands (P32 and P59) were identified as functionally selective C5aR2 ligands, exhibiting selective recruitment of β-arrestin 2 via C5aR2, partial inhibition of C5a-induced ERK1/2 activation and lipopolysaccharide-stimulated interleukin-6 release from human monocyte-derived macrophages. Importantly, neither ligand could induce ERK1/2 activation or inhibit C5a-induced ERK1/2 activation via C5aR1 directly. Finally, P32 inhibited C5a-mediated neutrophil mobilisation in wild-type, but not C5aR2(-/-) mice. These functionally selective ligands for C5aR2 are novel tools that can selectively modulate C5a activity in vitro and in vivo, and thus will be valuable tools to interrogate C5aR2 function.

Indexed as

Signal TransductionAnimalsbeta-Arrestin 2CHO CellsComplement C5aCricetinaeCricetulusEnzyme ActivationExtracellular Signal-Regulated MAP KinasesFluorescence Resonance Energy TransferHumansInterleukin-6LigandsMacrophagesMiceMonocytesbeta-Arrestin 2Complement C5aExtracellular Signal-Regulated MAP KinasesInterleukin-6LigandsPeptide LibraryReceptor, Anaphylatoxin C5a

Identifiers

PMID27108698
OpenAlexW2342683208

What OpenQuestion holds

Textmetadata
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.