Evidence map›Paper›PMID 26675068›Full record

ArticleMolecular immunology2016

Anti-complement activity of the Ixodes scapularis salivary protein Salp20.

Dennis E Hourcade, Antonina M Akk, Lynne M Mitchell, Hui-fang Zhou, Richard Hauhart, Christine T N Pham

Open access · greenAbstract read
In one paragraph

Article in Molecular immunology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.3field-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

29 citing papers in PubMed, 60 citations in OpenAlex.

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  11. The Brilliance ofPathogens (Basel, Switzerland) · 2021
    Review
  12. Review
  13. Changing the Recipe: Pathogen Directed Changes in Tick Saliva Components.International journal of environmental research and public health · 2021
    Review
  14. Immunomodulatory Proteins in Tick Saliva From a Structural Perspective.Frontiers in cellular and infection microbiology · 2021
    Review
  15. Article
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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

6 authors at 1 institution in 1 country.

Dennis E HourcadeDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: dhourcad@dom.wustl.edu.
Antonina M AkkDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: aakk@dom.wustl.edu.
Lynne M MitchellDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: lmitchel@dom.wustl.edu.
Hui-fang ZhouDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: hzhou@dom.wustl.edu.
Richard HauhartDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: rhauhart@dom.wustl.edu.
Christine T N PhamDivision of Rheumatology, Department of Medicine, Washington University, St. Louis, MO, USA. Electronic address: cpham@dom.wustl.edu.
Washington University in St. Louis · US

Funding

Viral Discovery in Rheumatoid ArthritisP30AR048335 · NIAMS · WASHINGTON UNIVERSITY · PI WEIHL, CONRAD C · 2001 to 2015
$8.9M
COMPLEMENT CONVERTASE: ASSEMBLY, FUNCTION AND REGULATIONR01AI051436 · NIAID · WASHINGTON UNIVERSITY · PI HOURCADE, DENNIS EMIL · 2003 to 2016
$3.7M
Inhibition of NF-kB with siRNA/Peptide Nanoparticles for Arthritis TreatmentR01AR067491 · NIAMS · WASHINGTON UNIVERSITY · PI PHAM, CHRISTINE T., WICKLINE, SAMUEL A · 2015 to 2019
$1.8M
REGULATION OF COMPLEMENT ACTIVATION BY SALP20 PROTEINR21AI115139 · NIAID · WASHINGTON UNIVERSITY · PI HOURCADE, DENNIS EMIL, PHAM, CHRISTINE T. · 2016 to 2017
$419k
NIAID NIH HHS NIH AI051436NIAID NIH HHS R01 AI051436NIAID NIH HHS R21 AI115139NIAMS NIH HHS NIH P30AR048335NIAMS NIH HHS P30 AR048335NIAMS NIH HHS R01 AR067491
6 · The paper itself

Abstract

Complement, a major component of innate immunity, presents a rapid and robust defense of the intravascular space. While regulatory proteins protect host cells from complement attack, when these measures fail, unrestrained complement activation may trigger self-tissue injury, leading to pathologic conditions. Of the three complement activation pathways, the alternative pathway (AP) in particular has been implicated in numerous disease and injury states. Consequently, the AP components represent attractive targets for therapeutic intervention. The common hard-bodied ticks from the family Ixodidae derive nourishment from the blood of their mammalian hosts. During its blood meal the tick is exposed to host immune effectors, including the complement system. In defense, the tick produces salivary proteins that can inhibit host immune functions. The Salp20 salivary protein of Ixodes scapularis inhibits the host AP pathway by binding properdin and dissociating C3bBbP, the active C3 convertase. In these studies we examined Salp20 activity in various complement-mediated pathologies. Our results indicate that Salp20 can inhibit AP-dependent pathogenesis in the mouse. Its efficacy may be part in due to synergic effects it provides with the endogenous AP regulator, factor H. While Salp20 itself would be expected to be highly immunogenic and therefore inappropriate for therapeutic use, its emergence speaks for the potential development of a non-immunogenic Salp20 mimic that replicates its anti-properdin activity.

Indexed as

AnimalsComplement Pathway, AlternativeDisease Models, AnimalEnzyme-Linked Immunosorbent AssayIxodesMaleMiceMice, Inbred C57BLSalivary Proteins and PeptidesTick InfestationsTransfectionSalivary Proteins and PeptidesComplement activationComplement alternative pathwayIxodes scapularisProperdinSalivary proteinSalp20

Identifiers

PMID26675068
PMCPMC4698246
OpenAlexW2194180979

What OpenQuestion holds

Textmetadata
LicenceTDM
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.