Evidence map›Paper›PMID 20148897›Full record

ArticleCellular microbiology2010

LnaB: a Legionella pneumophila activator of NF-kappaB.

Vicki P Losick, Eva Haenssler, Man-Yu Moy, Ralph R Isberg

Open access · bronzeAbstract read
In one paragraph

Article in Cellular microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed
7.5field-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

80 citing papers in PubMed, 125 citations in OpenAlex.

  1. bioRxiv : the preprint server for biology · 2026
    Article
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  3. Molecular evolution and adaptations ofFrontiers in cellular and infection microbiology · 2026
    Review
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  6. Review
  7. Article
  8. Journal of bacteriology · 2024
    Review
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  16. The Sde phosphoribosyl-linked ubiquitin transferases protect theProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  17. Article
  18. The Sde Phosphoribosyl-Linked Ubiquitin Transferases protect thebioRxiv : the preprint server for biology · 2023
    Article
  19. Review
  20. Review

20 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

4 authors at 3 institutions in 1 country.

Vicki P LosickDepartment of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, MA 02111, USA.
Eva Haenssler
Man-Yu Moy
Ralph R Isberg
Tufts University · USCarnegie Institution for Science · USColumbia University · US

Funding

MOLECULAR ANALYSIS OF MICROBIAL PATHOGENST32AI007422 · NIAID · TUFTS UNIVERSITY BOSTON · PI Ralph R. Isberg · 1992 to 2026
$5.7M
Howard Hughes Medical InstituteNIAID NIH HHS T32 AI007422NIAID NIH HHS T32AI007422
6 · The paper itself

Abstract

Legionella pneumophila possesses a large arsenal of type IV translocated substrates. Over 100 such proteins have been identified, but the functions of most are unknown. Previous studies have demonstrated that L. pneumophila activates NF-kappaB, a master transcriptional regulator of the mammalian innate immune response. Activation of NF-kappaB is dependent on the Legionella Icm/Dot type IV protein translocation system, consistent with the possibility that translocated bacterial proteins contribute to this response. To test this hypothesis, an expression library of 159 known and putative translocated substrates was created to evaluate whether ectopic production of a single L. pneumophila protein could activate NF-kappaB in mammalian cells. Expression of two of these proteins, LnaB (Legionella NF-kappaB activator B) and LegK1, resulted in approximately 150-fold induction of NF-kappaB activity in HEK293T cells, levels similar to the strong induction that occurs with ectopic expression of the known activator Nod1. LnaB is a substrate of the Icm/Dot system, and in the absence of this protein, a partial reduction of NF-kappaB activation in host cells occurs after challenge by post-exponential phase bacteria. These data indicate that LnaB is an Icm/Dot substrate that contributes to NF-kappaB activation during L. pneumophila infection in host cells.

Indexed as

AnimalsBacterial ProteinsCell LineCells, CulturedHumansLegionella pneumophilaMacrophagesMiceMice, Inbred ANF-kappa BBacterial ProteinsNF-kappa B

Identifiers

PMID20148897
PMCPMC2947841
OpenAlexW1508175265

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.