Evidence map›Paper›PMID 20548782›Full record

ArticlePloS one2010

Contrasting transcriptional responses of a virulent and an attenuated strain of Mycobacterium tuberculosis infecting macrophages.

Alice H Li, Simon J Waddell, Jason Hinds, Chad A Malloff, Manjeet Bains, Robert E Hancock, Wan L Lam, Philip D Butcher, Richard W Stokes

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.5field-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

26 citing papers in PubMed, 48 citations in OpenAlex.

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  5. PPE38-Secretion-Dependent Proteins ofFrontiers in immunology · 2021
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  6. March ofClinical & translational immunology · 2020
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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

9 authors at 3 institutions in 2 countries.

Alice H LiDepartment of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada.
Simon J Waddell
Jason Hinds
Chad A Malloff
Manjeet Bains
Robert E Hancock
Wan L Lam
Philip D Butcher
Richard W Stokes
University of British Columbia · CASt George's, University of London · GBBC Children's Hospital · CA

Funding

Medical Research Council G0802079Wellcome Trust 062511Wellcome Trust 080039Wellcome Trust 086547
6 · The paper itself

Abstract

backgroundH37Rv and H37Ra are well-described laboratory strains of Mycobacterium tuberculosis derived from the same parental strain, H37, that show dramatically different pathogenic phenotypes. METHODOLOGY/PRINCIPAL

findingsIn this study, the transcriptomes of the two strains during axenic growth in broth and during intracellular growth within murine bone-marrow macrophages were compared by whole genome expression profiling. We identified and compared adaptations of either strain upon encountering an intracellular environment, and also contrasted the transcriptomes of the two strains while inside macrophages. In the former comparison, both strains induced genes that would facilitate intracellular survival including those involved in mycobactin synthesis and fatty acid metabolism. However, this response was stronger and more extensive for H37Rv than for H37Ra. This was manifested as the differential expression of a greater number of genes and an increased magnitude of expression for these genes in H37Rv. In comparing intracellular transcriptional signatures, fifty genes were found to be differentially expressed between the strains. Of these fifty, twelve were under control of the PhoPR regulon. Further differences between strains included genes whose products were members of the ESAT-6 family of proteins, or were associated with their secretion. CONCLUSIONS/SIGNIFICANCE: Along with the recent identification of single nucleotide polymorphisms in H37Ra when compared to H37Rv, our demonstration of differential expression of PhoP-regulated and ESX-1 region-related genes during macrophage infection further highlights the significance of these genes in the attenuation of H37Ra.

Indexed as

Transcription, GeneticAnimalsCells, CulturedMacrophagesMiceMycobacterium tuberculosisReverse Transcriptase Polymerase Chain ReactionVirulence

Identifiers

PMID20548782
PMCPMC2883559
OpenAlexW2055532157

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.