Evidence map›Paper›PMID 18573895›Full record

ArticleInfection and immunity2008

Essential role of the response regulator Rrp2 in the infectious cycle of Borrelia burgdorferi.

Bethany K Boardman, Ming He, Zhiming Ouyang, Haijun Xu, Xiujuan Pang, X Frank Yang

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed
7.4field-weighted citation impact, top 2% 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

96 citing papers in PubMed, 122 citations in OpenAlex.

  1. TheInfection and immunity · 2026
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  4. Virulence Regulation inMicroorganisms · 2025
    Review
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  7. Infection and immunity · 2025
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  15. Review
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  18. Review
  19. Article
  20. Gene Regulation and Transcriptomics.Current issues in molecular biology · 2021
    Article

36 more citing papers are in PubMed but not listed here.

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 4 institutions in 2 countries.

Bethany K BoardmanDepartment of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
Ming He
Zhiming Ouyang
Haijun Xu
Xiujuan Pang
X Frank Yang
Indiana University – Purdue University Indianapolis · USIndiana University School of MedicineShenyang Pharmaceutical University · CNThe University of Texas Southwestern Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Alteration of surface lipoprotein profiles is a key strategy that the Lyme disease pathogen, Borrelia burgdorferi, has evolved to be maintained within its enzootic cycle between arthropods and mammals. Accumulated evidence indicates that the central regulatory pathway controlling differential gene expression by B. burgdorferi is the RpoN-RpoS pathway (the sigma(54)-sigma(S) sigma factor cascade). It was previously shown that activation of the RpoN-RpoS pathway is controlled by Rrp2, a two-component response regulator and sigma(54)-dependent transcriptional activator. The role of Rrp2 in the infectious cycle of B. burgdorferi has not been determined heretofore. In this report, we demonstrate that an rrp2 mutant defective in activating sigma(54)-dependent transcription was unable to establish infection in mice, but the rrp2 mutant was capable of surviving within ticks during and after tick feeding. Because the rrp2 mutant was defective in the production of OspC, an outer surface lipoprotein essential for mammalian host infection, we further examined whether the loss of infectivity of the rrp2 mutant was solely due to the inability to produce OspC. While transformation with a shuttle vector carrying ospC under the control of a constitutive flaB promoter restored infection to an ospC mutant in immunodeficient SCID mice, it could not rescue the avirulent phenotype of the rrp2 mutant. These data indicate that, in addition to controlling OspC, Rrp2 controls another factor(s) essential for B. burgdorferi to establish infection in mammals. Furthermore, microarray analyses revealed that 125 and 19 genes were positively and negatively regulated, respectively, by Rrp2, which provides a foundation for future identification of additional Rrp2-dependent virulence determinants in B. burgdorferi.

Indexed as

Amino Acid SequenceAnimalsAntigens, BacterialBacterial Outer Membrane ProteinsBacterial ProteinsBorrelia burgdorferiGene DeletionGene Expression ProfilingGenetic Complementation TestLyme DiseaseMiceMice, Inbred C3HMice, SCIDMicrobial ViabilityMolecular Sequence DataMutagenesis, InsertionalAntigens, BacterialBacterial Outer Membrane ProteinsBacterial ProteinsOspC protein

Identifiers

PMID18573895
PMCPMC2519420
OpenAlexW2111701441

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.