Evidence map›Paper›PMID 15501789›Full record

ArticleInfection and immunity2004

Effects of vlsE complementation on the infectivity of Borrelia burgdorferi lacking the linear plasmid lp28-1.

Matthew B Lawrenz, R Mark Wooten, Steven J Norris

Abstract read
In one paragraph

Article in Infection and immunity, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

51 citing papers in PubMed, 75 citations in OpenAlex.

  1. Article
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  5. Hitchhiker's Guide toJournal of bacteriology · 2024
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  8. Evolutionary Genetics ofCurrent issues in molecular biology · 2021
    Review
  9. Lyme Disease Pathogenesis.Current issues in molecular biology · 2021
    Review
  10. Article
  11. Article
  12. Novel targets and strategies to combat borreliosis.Applied microbiology and biotechnology · 2020
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Antigenic Variation and Immune Escape in the MTBC.Advances in experimental medicine and biology · 2017
    Review
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

3 authors at 2 institutions in 1 country.

Matthew B LawrenzDepartment of Pathology and Laboratory Medicine, Graduate School of Biomedical Sciences, University of Texas--Houston Health Science Center, USA.
R Mark Wooten
Steven J Norris
The University of Texas Health Science Center at Houston · USUniversity of Toledo Medical Center · US

Funding

VIRULENCE-ASSOCIATED PROTEINS IN LYME DISEASER01AI037277 · NIAID · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI NORRIS, STEVEN J. · 1995 to 2015
$5.4M
NIAID NIH HHS R01 AI037277NIAID NIH HHS R01 AI37277
6 · The paper itself

Abstract

The loss of linear plasmid lp28-1, which contains the vls antigenic variation locus, is associated with reduced infectivity of Borrelia burgdorferi in immunocompetent mice. The recombinant shuttle vector pBBE22, which includes the virulence determinant BBE22 from lp25 and restores infectivity to readily transformable B. burgdorferi lacking lp25 and lp56, was used to determine the effect of trans expression of vlsE on virulence. Spirochetes lacking lp28-1 were complemented with the plasmid pBBE22:vlsE, containing both BBE22 and vlsE. VlsE protein produced by this construct was expressed and surface accessible in in vitro-cultured B. burgdorferi, as determined by surface proteolysis and immunoblot analysis. Clones lacking lp25 but containing lp28-1 and either pBBE22 or pBBE22:vlsE were reisolated consistently from immunocompetent mice 8 weeks after infection. In contrast, a clone lacking both lp25 and lp28-1 and complemented with pBBE22:vlsE was isolated from only a single tissue of one of six C3H/HeN mice 8 weeks postinfection. These results indicate that either an intact vls antigenic variation locus or another determinant on lp28-1 is required to restore complete infectivity. In addition, an isogenic clone that retained lp28-1 was complemented with the vlsE shuttle plasmid and was examined for vlsE sequence variation and infectivity. Sequence variation was not observed for the shuttle plasmid, indicating that the cis arrangement of vlsE and the vls silent cassettes in lp28-1 facilitate vlsE gene conversion. Lack of vlsE sequence variation on the shuttle plasmid thus did not result in clearance of the trans-complemented strain in immunocompetent mice under the conditions tested.

Indexed as

Genetic Complementation TestPlasmidsAmino Acid SequenceAnimalsAntibodies, BacterialAntigens, BacterialBacterial ProteinsBorrelia burgdorferiGenetic VariationGenetic VectorsLipoproteinsLyme DiseaseMiceMice, Inbred C3HMice, SCIDMolecular Sequence DataAntibodies, BacterialAntigens, BacterialBacterial ProteinsLipoproteinsVlsE protein, Borrelia burgdorferi

Identifiers

PMID15501789
PMCPMC523020
OpenAlexW2102266633

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.