Evidence map›Paper›PMID 19451251›Full record

ArticleInfection and immunity2009

CspA-mediated binding of human factor H inhibits complement deposition and confers serum resistance in Borrelia burgdorferi.

Melisha R Kenedy, Santosh R Vuppala, Corinna Siegel, Peter Kraiczy, Darrin R Akins

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

57 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
  2. Hitchhiker's Guide toJournal of bacteriology · 2024
    Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Lipoproteome screening of the Lyme disease agent identifies inhibitors of antibody-mediated complement killing.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  8. Article
  9. The Brilliance ofPathogens (Basel, Switzerland) · 2021
    Review
  10. Lyme Disease Pathogenesis.Current issues in molecular biology · 2021
    Review
  11. Review
  12. Review
  13. Complement Evasion inAntibiotics (Basel, Switzerland) · 2019
    Review
  14. Review
  15. Article
  16. Elucidating the Immune Evasion Mechanisms ofFrontiers in immunology · 2019
    Article
  17. Review
  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

5 authors at 3 institutions in 2 countries.

Melisha R KenedyDepartment of Microbiology and Immunology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104, USA.
Santosh R Vuppala
Corinna Siegel
Peter Kraiczy
Darrin R Akins
Goethe University Frankfurt · DEUniversity Hospital Frankfurt · DEUniversity of Oklahoma Health Sciences Center · US

Funding

Outer Membrane Proteins of Borrelia burgdorferiR01AI059373 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI AKINS, DARRIN R. · 2005 to 2022
$4.7M
Complement evasion by Borrelia burgdorferiR21AI064629 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI AKINS, DARRIN R · 2006 to 2007
$398k
Outer membrane proteins of Borrelia burgdorferiR56AI059373 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI AKINS, DARRIN R. · 2011 to 2011
$329k
NIAID NIH HHS AI059373NIAID NIH HHS AI064629NIAID NIH HHS R01 AI059373NIAID NIH HHS R21 AI064629NIAID NIH HHS R56 AI059373
6 · The paper itself

Abstract

Borrelia burgdorferi has developed efficient mechanisms for evading the innate immune response during mammalian infection and has been shown to be resistant to the complement-mediated bactericidal activity of human serum. It is well recognized that B. burgdorferi expresses multiple lipoproteins on its surface that bind the human complement inhibitors factor H and factor H-like protein 1 (FH/FHL-1). The binding of FH/FHL-1 on the surface of B. burgdorferi is thought to enhance its ability to evade serum-mediated killing during the acute phase of infection. One of the key B. burgdorferi FH/FHL-1 binding proteins identified thus far was designated CspA. While it is known that CspA binds FH/FHL-1, it is unclear how the interaction between CspA and FH/FHL-1 specifically enhances serum resistance. To better understand how CspA mediates serum resistance in B. burgdorferi, we inactivated cspA in a virulent strain of B. burgdorferi. An affinity ligand blot immunoassay and indirect immunofluorescence revealed that the CspA mutant does not efficiently bind human FH to its surface. Consistent with the lack of FH binding, the CspA mutant was also highly sensitive to killing by human serum. Additionally, the deposition of complement components C3, C6, and C5b-9 was enhanced on the surface of the CspA mutant compared to that of the wild-type strain. The combined data lead us to conclude that the CspA-mediated binding of human FH confers serum resistance by directly inhibiting complement deposition on the surface of B. burgdorferi.

Indexed as

Bacterial ProteinsBlood Bactericidal ActivityBlood Physiological PhenomenaBorrelia burgdorferiComplement Factor HComplement System ProteinsGene Knockout TechniquesHumansMicrobial ViabilityProtein BindingBacterial ProteinsCFH protein, humancold shock protein CS7.4, BacteriaComplement Factor HComplement System Proteins

Identifiers

PMID19451251
PMCPMC2708555
OpenAlexW2149784756

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.