Cited by 305Tuberculosis Research and EpidemiologyMycobacterium research and diagnosisInfectious Diseases and Tuberculosis

Genomic analysis of smooth tubercle bacilli provides insights into ancestry and pathoadaptation of Mycobacterium tuberculosis

Open access
Supply, Philip, Marceau, Michael, Mangenot, Sophie, Roche, David, Rouanet, Carine, Khanna, Varun, Majlessi, Laleh, Criscuolo, Alexis +30 more·2013·Nature Genetics

Abstract

Roland Brosch and colleagues report whole-genome sequencing of tubercle bacilli with smooth colony morphology, also known as Mycobacterium canetti and/or Mycobacterium prototuberculosis, obtained from humans with tuberculosis from geographically diverse regions. Their comparative genomic analysis with Mycobacterium tuberculosis and other M. tuberculosis complex members identifies extensive recombination and provides insights into the evolution of mycobacteria. The authors also report that tubercle bacilli with smooth colony morphology show reduced persistence and virulence compared to M. tuberculosis strains in infection experiments in mice. Global spread and limited genetic variation are hallmarks of M. tuberculosis, the agent of human tuberculosis. In contrast, Mycobacterium canettii and related tubercle bacilli that also cause human tuberculosis and exhibit unusual smooth colony morphology are restricted to East Africa. Here, we sequenced and analyzed the whole genomes of five representative strains of smooth tubercle bacilli (STB) using Sanger (4–5× coverage), 454/Roche (13–18× coverage) and/or Illumina DNA sequencing (45–105× coverage). We show that STB isolates are highly recombinogenic and evolutionarily early branching, with larger genome sizes, higher rates of genetic variation, fewer molecular scars and distinct CRISPR-Cas systems relative to M. tuberculosis. Despite the differences, all tuberculosis-causing mycobacteria share a highly conserved core genome. Mouse infection experiments showed that STB strains are less persistent and virulent than M. tuberculosis. We conclude that M. tuberculosis emerged from an ancestral STB-like pool of mycobacteria by gain of persistence and virulence mechanisms, and we provide insights into the molecular events involved.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1038/ng.2517

Cites

66 of 66 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Comparative analysis of multiple genome sequences of Mycobacterium canettii revealed thousands of SNPs, and the striking similarity to experimentally produced mosaic genomes of M. smegmatis provided the first indication that HGT had occurred in the MTBC.

    “That concept was challenged when the comparative analysis of multiple genome sequences of Mycobacterium canettii (a smooth colony outlier of the MTBC) revealed thousands of SNPs: the striking similarity to the experimentally produced mosaic genomes of M. smegmatis provided the first indication that HGT had occurred in the MTBC (48–51).”

    From Mycobacterium smegmatis: The Vanguard of Mycobacterial Research (2023) · cites this paper as [49]

    Split into 2 atoms — 1 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • M. canettii strains represent a group of rare tubercle bacilli thought to resemble the ancestor of M. tuberculosis and have been isolated mainly from tuberculosis patients in the Horn of Africa.

    “representing a group of rare tubercle bacilli that are thought to resemble the ancestor of M. tuberculosis and have been isolated mainly from tuberculosis patients in the region of the Horn of Africa (East Africa) (56,57).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Supply, P., Marceau, M., Mangenot, S., Roche, D., Rouanet, C., Khanna, V., Majlessi, L., Criscuolo, A., Tap, J., Pawlik, A., Fiette, L., Orgeur, M., Fabre, M., Parmentier, C., Frigui, W., Simeone, R., Boritsch, E. C., Debrie, A.-S., Willery, E., Walker, D., Quail, M. A., Ma, L., Bouchier, C., Salvignol, G., Sayes, F., Cascioferro, A., Seemann, T., Barbe, V., Locht, C., Gutierrez, M.-C., Leclerc, C., Bentley, S. D., Stinear, T. P., Brisse, S., Médigue, C., Parkhill, J., Cruveiller, S., & Brosch, R.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
  • Institut Pasteur (FR)
  • Inserm (FR)
  • Hôpital d'instruction des Armées Percy (FR)
  • Wellcome Sanger Institute (GB)
  • Monash University (AU)
  • The University of Melbourne (AU)
Corresponding author
  • Supply, Philip
  • Brosch, Roland
Venue
Nature Genetics
Published
2013-01-06
Volume
45
Issue
2
Pages
172-179
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2005360702
Cited by
305
References
66
Citations by year
2026: 11 · 2025: 14 · 2024: 11 · 2023: 18 · 2022: 12 · 2021: 24 · 2020: 25 · 2019: 21 · 2018: 12 · 2017: 27 · 2016: 30 · 2015: 39 · 2014: 44 · 2013: 15 · 2012: 1
FWCI
31.13
Type
journal article
Language
en
Open access
Locations
  • Nature Genetics (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
  • Minerva Access (University of Melbourne) (submittedVersion)
  • LillOA (Université de Lille (University Of Lille)) (submittedVersion, other-oa)
Funders
  • Wellcome Trust (098051)
  • European Commission (260872)
  • Agence Nationale de la Recherche (ANR-10-INBS-0009)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Health Sciences › Medicine › Epidemiology › Mycobacterium research and diagnosis
  • Health Sciences › Medicine › Surgery › Infectious Diseases and Tuberculosis
Keywords
Mycobacterium tuberculosis, Mycobacterium tuberculosis complex, recombination, bacterial evolution, pathoadaptation, virulence, persistence, CRISPR-Cas, core genome, East Africa
MeSH terms
Adaptation, Biological, Animals, Base Sequence, Lung, Mice, Inbred BALB C, Molecular Sequence Data, Mycobacterium tuberculosis, Phylogeny, Species Specificity, Spleen, Genetic Variation, Virulence, Cluster Analysis, Genome, Bacterial, Sequence Analysis, DNA, Evolution, Molecular, Polymorphism, Single Nucleotide, Genomics, Mice, Inverted Repeat Sequences

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review